Pulmonetic Systems LTV Series Service Manual
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Pulmonetic Systems LTV Series Service Manual

Ventilator
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Customer Care Center Phone: (800) 754-1914
Customer Care Center Fax: (763) 398-8403
Sales/Marketing E-mail: info@pulmonetic.com
Customer Care Center E-mail: service@pulmonetic.com
Pulmonetic Systems Website: http://www.pulmonetic.com
®
®
LTV
1000, LTV
950, LTV
Pulmonetic Systems, Inc.
©
Copyright
2008 Pulmonetic Systems, Inc., Minneapolis, Minnesota.
p/n 10665, Rev. K
Revision History
Revision Level
Rev. A, ECO 539
Rev. B, ECO 740
Rev. C, ECO 818
Rev. D, ECO 1149
Rev. E, ECO 1532
Rev. F, ECO 1983
Rev. G, ECO 2374
Rev. H, ECO 3580
Rev. J, ECO 5019
Rev. K, ECO 5407
Contact Information
Pulmonetic Systems, Inc.
17400 Medina Rd., Suite 100
Minneapolis, Minnesota 55447-1341
Phone: (763) 398-8500
Office Fax: (763) 398-8400
®
®
900, LTV
800 and LTV
®
LTV
Series Ventilator Service Manual
Revision Date
May 1999
January 2000
August 2000
May 2001
May 2002
April 2003
September 2003
November 2005
December 2007
July 2008
®
are trademarks belonging to
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Summary of Contents for Pulmonetic Systems LTV Series

  • Page 1 ® ® ® ® ® 1000, LTV 950, LTV 900, LTV 800 and LTV are trademarks belonging to Pulmonetic Systems, Inc. © Copyright 2008 Pulmonetic Systems, Inc., Minneapolis, Minnesota. ® p/n 10665, Rev. K Series Ventilator Service Manual Page i...
  • Page 2 (60) days from date of shipment. The internal battery is warranted for ninety (90) days from date of shipment. Pulmonetic Systems will, at its option, either repair, replace, or issue credit for products that prove to be defective during the warranty period.
  • Page 3 ® maintaining the LTV Series ventilators, should be directed to a service technician who has been trained and certified by Pulmonetic Systems or Pulmonetic Systems, Inc. using the contact information at the front of this manual. ® p/n 10665, Rev. K...

  • Page 4: Table Of Contents

    Contents Notices ............................iii Chapter 1 - Introduction.................. 1-1 Getting Assistance ........................1-1 Operator’s Safety Information ....................1-2 Warnings ...........................1-3 Cautions ............................1-4 Symbols.............................1-6 Chapter 2 - Ventilator Checkout Tests ............2-1 Alarm Test ..........................2-4 Display Test..........................2-5 Control Test..........................2-7 Leak Test...........................2-9 Vent Inop Alarm Test ......................2-11 Exit ............................2-12 Chapter 3 - Real Time Transducer Data ............
  • Page 5 Configuration .......................... 6-35 Model Selection ........................6-36 Flow Valve Home Position...................... 6-37 Temperature Compensation....................6-39 Analog Board Setting......................6-40 Blender ..........................6-42 Configuration Menu Exit ......................6-43 CLEAR............................ 6-44 Vent Maintenance Menu Exit....................6-45 Chapter 7 - Troubleshooting ................7-1 Displays and Buttons ........................ 7-2 Ventilator Performance......................
  • Page 6 Flow Valve Assembly and Cleaning Instructions ..............8-55 Front Panel..........................8-64 Internal Battery Pack.......................8-69 Internal Inlet Filter ........................8-72 Main Board Assembly ......................8-73 Memory Board.........................8-77 Checking the O2 Blender when upgrading software ............8-79 Motor Board Assembly......................8-80 Blender Assembly / O Inlet Block ..................8-82 Blender Filter........................8-89 O2 Blender Cap (LTV 1000 Only)...................8-90 O2 Port Cap (Low Pressure)....................8-91...

  • Page 7: Getting Assistance

    LTV Series ventilator. It is designed for use by service personnel who have been trained and authorized by Pulmonetic Systems. Do not perform any of the procedures in ® this manual unless you are trained and authorized for service on the LTV Series ventilators.

  • Page 8: Operator's Safety Information

    Operator’s Safety Information All Operators are to read and understand the following information about Warning, Caution ® and Note statements before operating the LTV Series ventilator. General warnings and cautions which apply any time you use the ventilator are listed here. General and specific warnings and cautions also appear throughout this manual where they are most meaningful.

  • Page 9: Warnings

    Pulmonetic Systems, Inc. are authorized to perform repairs or maintenance on the LTV® series ventilators. Do not attempt to repair or replace any part of the ventilator unless you are trained and certified to do so by Pulmonetic Systems. Personal injury could result.

  • Page 10: Cautions

    Cautions CAUTION Electrical Grounding – In the event of a loss of electrical protective ground, touching the ventilator could result in electrical shock. To ensure grounding and avoid this danger, use ® only the unmodified power cord originally supplied with the LTV Series ventilators, maintained in good condition and connected to a properly wired and grounded electrical power outlet.
  • Page 11 CAUTION Ventilator Immersion - Do not immerse the ventilator in liquids. High pressure air nozzle – Only a low-pressure air nozzle with flow less than 10 liters per minute should be used around the ventilator. High pressure can damage the ventilator, in particular the differential pressure ports.

  • Page 12: Symbols

    Symbols Compliance Symbol Title Application ISO 3864 Caution (refer to Direct the user to the instruction (Prev. IEC 348) accompanying manual where it is necessary to follow documents) certain specified instructions where Symbol No. safety is involved. B.3.1 IEC 417 Fuse Indicates the location of fuses.
  • Page 13 Chapter 2 - V ENTILATOR HECKOUT ESTS This chapter details five test procedures that are initiated through the Vent Check menu and ® used to verify the proper operation of the LTV Series ventilator. These Checkout Tests are to be performed before using the ventilator on a patient and in accordance with recommended periodic maintenance and testing of the ventilator.
  • Page 14 To enable the Ventilator Checkout menu: To enter the Ventilator Checkout (VENT CHECK) menu, a special power on sequence is required. Disconnect the patient from the ventilator and ventilate using an alternative method. With the ventilator off, connect the AC Adapter to the ventilator and plug it in to a valid AC power source.
  • Page 15 Clear the alarm by pressing the Silence/Reset button. • The audible alarm silences, and the display changes from REMOVE PTNT to VENT CHECK. To enter the Ventilator Checkout menu: Push the Select button. The first Ventilator Checkout Test, ALARM is displayed. Note ®...

  • Page 16: Alarm Test

    Alarm Test The alarm test verifies that the audible alarm is working correctly. To run the alarm test: 1) Press the Select button while ALARM is displayed. 2) Verify that the audible alarm is sounded. 3) When the alarm has sounded for at least 2 seconds, push the Select button again. •...

  • Page 17: Display Test

    Display Test At the end of the Alarm test, DISPLAY shows in the LED display window. The display test verifies that the ventilator displays are working correctly. To run the Display Test: 1) Press the Select button while DISPLAY is showing. 2) All segments of the 7-segment control displays;...
  • Page 18 Displays will be illuminated in the following colors: Display Color Display Color Airway Pressure Display Green Green Pressure Mode LED Display Window Assist/Control Mode LED Green Breath Rate Green SIMV/CPAP Mode LED Green Tidal Volume Green NPPV Mode LED Green Pressure Control Green Green...

  • Page 19: Control Test

    Control Test At the end of the Display test, CONTROL shows in the LED display window. The Control Test is used to verify that the ventilator buttons and the Set Values knob are working correctly. To run the Control Test: Press the Select button while CONTROL is displayed.
  • Page 20 Note ® ® Although the LTV 1000 Front Panel is shown, the test is applicable to all LTV Series ventilators. Test each control by pressing every button, one at a time. When each one is pressed, verify that the name of the button is displayed in the display window. Control names are as shown in the table below: Control Display...

  • Page 21: Leak Test

    Leak Test The Leak test is used to test the patient circuit for leaks. To run the Leak Test: 1) At the end of the Control test, LEAK shows in the LED Display window. 2) Attach all patient circuit accessories (such as water traps, heated circuits and humidifiers to the patient circuit.
  • Page 22 6) To perform the Leak Test, the ventilator does the following: a) Closes the exhalation valve and sets the flow valve to a near-closed state. The display briefly shows HOMING VALVE. b) Elevates the turbine motor speed. The display shows SET TURBINE. c) Elevates the circuit pressure.

  • Page 23: Vent Inop Alarm Test

    Vent Inop Alarm Test The Vent Inop alarm test is used to verify that the Inop alarm is working correctly. To run the Vent Inop alarm test: To run the Vent Inop alarm test, the ventilator must be on (running) for at least 60 seconds.

  • Page 24: Exit

    Exit To exit VENT CHECK and enter normal ventilation mode: 1) Turn the Set Value Knob to scroll through the main menu entries (VENT OP, ALARM OP, VENT CHECK, etc.) until EXIT is displayed. 2) Push the Select button while EXIT is displayed. 3) Alternatively, push the Control Lock button until normal ventilation mode is restored.
  • Page 25 Chapter 3 - R RANSDUCER The Real Time Transducer data allows you to view the real time activity in the ventilator. The real time transducer menu is set up as follows: RT XDCR DATA xx.xx ® xx.xx (Not on LTV 800) ®...
  • Page 26 Display Real Time Data FDn xx.xx Flow differential pressure as measured at the patient wye using the narrow scale transducer. Differential pressure is measured ® (Not on LTV 800) between the high and low side proximal sense lines. The narrow scale transducer is only used for differential pressures between -0.35 cmH O and 0.35 cmH O (approximately -15...

  • Page 27: Chapter 4 - Cleaning And Sterilization

    Chapter 4 - C LEANING AND TERILIZATION Cleaning the Ventilator All ventilator external surfaces should be cleaned before and after each patient use, and as may be required. To clean the ventilator: 1) Wipe the exterior surfaces of the ventilator with a clean, damp cloth. The use of an anti- bacterial cleaning solution is recommended.

  • Page 28: Cleaning The Exhalation Valve And Reusable Patient Circuit

    Cleaning the Exhalation Valve and Reusable Patient Circuit WARNING Patient Circuits – Pulmonetic Systems Patient Circuits, Exhalation Valve Assemblies and Water Traps are shipped clean, not sterile. Ultra Violet Light Sensitivity – The material used in the tubing of the “Reusable” Patient Circuits is not UV stable.
  • Page 29 ® 900, 950 and 1000 Reusable Patient Circuits: ® p/n 10665, Rev. K Series Ventilator Service Manual Page 4-3...
  • Page 30 ® 800 Reusable Patient Circuits: ® Page 4-4 Series Ventilator Service Manual p/n 10665, Rev. K...
  • Page 31 To clean the exhalation valve and patient circuit, remove all gross particulate matter and bathe for a minimum of 10 minutes in 50% water and 50% vinegar, KlenZyme, or another enzymatic cleaner warmed to 95°F to 150°F (35°C to 65.5°C). Rinse gently for 2 minutes and use a low flow air source to eliminate any residual fluid or debris.
  • Page 32 To reassemble the exhalation valve: WARNING PEEP Valve Rotation – Attempting to adjust the PEEP valve counterclockwise past zero (0) may damage the PEEP valve assembly and cause patient circuit leaks and inaccuracies in patient pressure. CAUTION Patient Wye Installation – After cleaning, install the patient wye in the patient circuit so the proximal sense lines are oriented up while operating.

  • Page 33: Cleaning The Inlet Filter

    Cleaning the Inlet Filter To clean the inlet filter: 1) Remove the inlet filter by gently pinching the foam filter and pulling it out. 2) Hand wash the filter using warm water and a mild liquid detergent. 3) Rinse the filter thoroughly in warm water to remove all detergent. 4) Inspect the filter for damage and replace if necessary.

  • Page 34: Cleaning The Fan Filter

    Cleaning the Fan Filter To clean the fan filter: 1) Turn the ventilator off. 2) Remove the fan filter grill by popping it out with a small screwdriver or long nose pliers. 3) Remove the fan filter by gently pinching the foam filter and pulling it out. Note If you touch the rotating fan blades while removing the fan filter grill or filter, a HW FAULT may occur.

  • Page 35: Recommended Maintenance Schedule

    For the number of hours the ventilator has been in service, see Extended Features in the LTV Series Operator’s Manual. If the battery is deeply discharged, it may take several charge and discharge cycles before it is at full capacity.

  • Page 36: Before Initial Use

    Before Initial Use Plug the ventilator into an AC power source for 24 hours to fully charge the internal battery. While charging in the standby mode, the Charge Status Indicator LED displays as flashing amber, solid amber or solid green. If the Charge Status Indicator displays red, the internal battery cannot be charged and should be replaced.

  • Page 37: 10,000 Hour / 2 Year Maintenance

    Pulmonetic Systems are qualified to perform the 10,000 and 30,000 hour maintenance on the LTV series ventilators. Do not attempt to perform service on the ventilator unless you have been properly trained to do so, personal injury could result. Refer all servicing and repair to Pulmonetic Systems, Inc.

  • Page 39: Chapter 6 - Maintenance & Calibration

    Chapter 6 - M & C AINTENANCE ALIBRATION Operating Theory ® The LTV Series ventilator utilizes an electromechanical pneumatic system under the control of a microprocessor to deliver patient ventilation. The following diagrams and descriptions illustrate the major components of the ventilator and their respective functions. ®...
  • Page 40 Room air enters the ventilator through a flexible foam Inlet filter. After exiting the filter, the air enters an Accumulator/Silencer where it mixes with oxygen delivered from the Oxygen Blender . In addition, this chamber provides acoustic silencing to reduce the Rotary Compressor input noise.

  • Page 41: Pneumatic Schematic Detail

    Pneumatic Schematic Detail ® p/n 10665, Rev. K Series Ventilator Service Manual Page 6-3...

  • Page 42: Vent Maintenance

    Vent Maintenance These ventilator maintenance tests are used to verify the ventilator is working correctly, to troubleshoot problems with ventilator operation and performance, and to perform maintenance procedures such as calibration. Note To ensure the advantage of all new features and reliability improvements, Pulmonetic ®...

  • Page 43: Vent Maintenance Entry

    Vent Maintenance Entry WARNING ® Ventilator Checkout and Maintenance Modes - The LTV Series ventilator does not deliver gas during the ventilator Checkout mode (VENT CHECK) or ventilator Maintenance mode (VENT MTNCE) and should not be used to ventilate a patient during these tests. The Ventilator Maintenance menu is not enabled when the ventilator is powered up normally.

  • Page 44: Calibration

    Calibration The Calibration menu is used to calibrate the pressure transducers and flow valve motor speed for the ventilator. A Calibration Worksheet for recording calibration results is provided on page 6-24. Note To ensure the advantage of all new features and reliability improvements, Pulmonetic ®...

  • Page 45: Airway Pressure Calibration

    Airway Pressure Calibration To perform the airway pressure calibration, you will need the following equipment: • Calibration Syringe assembly , P/N 11471, with a T-connection to a pressure manometer (0-90 cmH Leak Test the Hi & Low Flow Transducer Ports 1) For the LTV 900, 950 and 1000, connect the tubes from the test fixture to the High and Low Flow transducer ports on the right side of the ventilator as shown above.
  • Page 46 8) If leakage in excess of the required values is observed, troubleshoot leaks (see Chapter 7 – Troubleshooting). If the leak persists, contact the technical support department at Pulmonetic Systems, Inc. using the information at the front of this manual.

  • Page 47: Calibrate The Airway Pressure Transducers

    Calibrate the Airway Pressure Transducers Press the Select button while AIRWAY is displayed. AP 50 O is displayed. Disconnect the sense lines from the side of the ventilator: • ® For LTV Series ventilators; disconnect the High and Low pressure sense lines. ®...
  • Page 48 connection(s) are open to ambient room air, observe the numbers displayed in the Tidal Volume setting window. When the displayed value is stable, press Select. Record the number that was displayed when you pressed Select on the calibration worksheet. ® •...

  • Page 49: Flow Differential Calibration

    Flow Differential Calibration To perform the flow differential calibration, you will need the following equipment: • Calibration Syringe assembly , P/N 11471, with a T-connection to a pressure manometer (0-90 cmH O). The pinch clamps should be used between each Luer fitting and the T-connection to block off the unused Luer fitting for each step in this procedure.
  • Page 50 2) Connect the female Luer fitting from the Calibration Syringe assembly to the Low Pressure Male Luer Fitting. Pinch off the tubing on the Syringe Calibration assembly to the male Luer fitting, and increase and maintain the pressure at 30.0 +/- 0.2 cmH Observe the numbers displayed in the Tidal Volume setting window.
  • Page 51 6) Connect the male Luer fitting from the Calibration Syringe assembly to the high pressure female Luer fitting on the side of the ventilator. Decrease and maintain the vacuum until a value in the range of 10 to 150 is displayed in the Tidal Volume Setting window. Adding a large amount of compliance, such as a test lung, to the Calibration Syringe assembly, will significantly stabilize the readings during this step.

  • Page 52: Valve Differential Calibration

    Valve Differential Calibration To perform the valve differential calibration, you will need the following equipment: • Calibration Syringe assembly , P/N 11471, with a T-connection to a pressure manometer (0-90 cmH To calibrate the valve differential transducer: Press the Select button while VALVE DIFF is displayed. a.
  • Page 53 Note The tube routing diagram shown is for the LTV1000 current configuration. See pages 8-40 through 8-45 for other possible tube routing configurations. Remove a Luer fitting from the Calibration Syringe assembly. Connect the tube from the syringe to the High Pressure Port of the Valve Differential transducer (the port nearest the analog board).
  • Page 54 Disconnect the tube from the syringe to the High Pressure Port of the Valve Differential transducer and observe the numbers displayed in the Tidal Volume setting window. When the displayed value is stable, press Select. Record the number displayed when you pressed Select on the Calibration Worksheet. •...

  • Page 55: O 2 Inlet Pressure Calibration

    Inlet Pressure Calibration To perform the O inlet pressure calibration, you will need the following equipment: • Gas source capable of 80 PSI with a T-connection to a pressure gauge and an O inlet connector. O2 leak test Set the O2 supply to approximately 50 PSI. Turn off the O2 supply.
  • Page 56 Check the values displayed in the Tidal Volume setting window. When the value stabilizes, record the number on the Calibration Worksheet at the end of this section and press Select. O2 0 PSI is displayed. With the O inlet port open to ambient room air, observe the values in the Tidal Volume window.

  • Page 57: Motor Drive Calibration

    Motor Drive Calibration To perform the motor drive calibration, you will need the following equipment: • Motor Drive Calibration Tool , P/N 10871, • 10 amp 60 Hz amp meter set to measure between 400 and 700 ma. To calibrate the motor drive: CAUTION Calibration Tool and Ventilator Damage - To avoid damaging the ventilator, turn the ventilator off and disconnect the AC Adapter before attaching the calibration tool.
  • Page 58 Set the calibration tool to ΦA. Reconnect the AC adapter to the ventilator. Turn the ventilator on, silence alarms and enter the CALIBRATION menu. Turn to MOTOR DRIVE and press Select. ΦA:+600ma: xxx is displayed where the xxx is a numeric value. The Phase A amp meter will show a positive value.

  • Page 59: Measure Turbine Speed (T/S)

    Measure Turbine Speed (T/S) Enter the SERVO menu. Run the ventilator in Servo Mode at default settings (flow 10 and turbine speed 4000) for approximately one minute to stabilize turbine speed. Set up a Multimeter to measure frequency. Connect the meter test leads as follows: •...
  • Page 60 Checkout patient port pressure testing. If the measured T/S value is outside of the above range, check the setup and repeat the test. For assistance, call technical support at Pulmonetic Systems, Inc., using the contact information at the front of this manual.

  • Page 61: Vent Maintenance Exit

    Vent Maintenance Exit The ventilator will not resume normal operation while the maintenance mode dip switch is set. To exit maintenance mode: 1) Turn the ventilator off. 2) Locate dip switch #5 and set it to the OFF position (towards the outside of the ventilator.) Verify that dip switches #6 and #8 remain in the ON position.

  • Page 62: Calibration Worksheet

    Calibration Worksheet ____________ ____________ SERIAL NUMBER: CONDUCTED BY: MEMORY BOARD SOFTWARE VER.: ____________ DATE: ____________ TEST MEAS. ACCEPTABLE PASS REQUIREMENT / FAIL DESCRIPTION VALUE A/D COUNTS VENTILATOR CALIBRATION Airway Pressure Leak test: High & Low Xdcr Leak ≤ 1.0 cmH2O in 1 min Leak test: High Leak ≤...

  • Page 63: Flow Valve Calibration

    Flow Valve Calibration The flow valve should not normally require recalibration from its factory set values. However, some circumstances, such as mechanical shock, may cause the flow valve calibration to change from its factory-set condition. This flow valve calibration procedure can be used to adjust the flow valve calibration setting to compensate for improper flows measured during the Performance Checkout procedure.
  • Page 64 Place the ventilator in an ESD-safe environment, and use ESD controls. Remove the back panel from the ventilator. Perform a visual inspection of the flow valve: • Is the Motor bracket interfering with the turbine manifold? • Is the Motor bracket interfering with the side Weldment? •...
  • Page 65 Determine the desired flow at 15 cmH O: Record the FVt temperature reading from the RT XDCR DATA menu. Use the table below to determine the appropriate ® delivered flow based on the recorded temperature. If the LTV does not have a Thermistor Cable (see illustration below), then use the value 11.5 Lpm.
  • Page 66 Turn the Servo off. From the VENT MTNCE, CONFIG, FLOW VALVE menu adjust the VHOME by the negative value of the value in the previous step. For example for an adjustment value of –5 from the previous step, increase the VHOME value by +5.

  • Page 67: Flow Valve Calibration Worksheet

    Flow Valve Calibration Worksheet ____________ ____________ SERIAL NUMBER: CONDUCTED BY: MEMORY BOARD SOFTWARE VER.: ____________ DATE: ____________ TEST MEAS. ACCEPTABLE PASS REQUIREMENT / FAIL DESCRIPTION VALUE A/D COUNTS FLOW VALVE CALIBRATION Calibration Date: Flow Valve Calibration 1) Determine flow valve configuration Enter VHOME value (244, 125 +/-10, 220 +/-20) 2) Measure 10 Lpm flow...

  • Page 68: Servo

    Servo The Servo feature allows you to control and verify certain ventilator functions. While the servo function is on, the ventilator will continuously deliver gas according to the highlighted settings. Gas may be delivered by: • turbine speed and flow valve step position •...
  • Page 69 To select delivery by flow valve step position, press Tidal Volume twice. The controls for step position and turbine speed will be highlighted to indicate they are active. To select delivery by Lpm, press Insp Time twice. The controls for flow, turbine speed and will be highlighted to indicate they are active.

  • Page 70: Solenoid

    Solenoid The Solenoid menu is used to test the operation of the solenoids. The menu is set up as follows: SOLENOID ExhPilot OFF ® Purge OFF (Not on LTV 800 with software version 3.13 or lower) Apres OFF ® ExhDiffP OFF (Not on LTV 800) ®...

  • Page 71: Step Test

    Step Test The flow valve Stepper Motor Synchronization Test is used to exercise the flow valve and ® insure LTV software / hardware synchronization. 1) Set the ventilator to VENT MAINTENANCE mode (VENT MTNCE), (refer to Vent Maintenance Entry in this chapter). 2) From the VENT MTNCE display, press the Select button and rotate the Set Value knob to select the STEP TEST display.

  • Page 72: Watchdog Test

    Watchdog Test The watchdog timer is used to verify that essential parts of the software are running at the correct times. If the software does not update the watchdog timer correctly, the watchdog timer causes the ventilator to inop. This item tests that the watchdog timer is operating correctly.

  • Page 73: Configuration

    Pressing the Control Lock exits the to the previous menu without making any selections. The menu selections are described further in the following pages. The Serial Number menu option is for use by Pulmonetic Systems personnel only. ® p/n 10665, Rev. K...

  • Page 74: Model Selection

    Model Selection ® The model selection menu is used to select the model of LTV Series ventilator. This option determines which functions are available for the selected unit. The model selected should match the model number on the front of the ventilator. The menu is set up as follows: MODEL LTV 1000 LTV 900...

  • Page 75: Flow Valve Home Position

    Flow Valve Home Position The flow valve home position menu is used to select the home step position for the flow valve. The position selected should match the flow valve. The menu is set up as follows: FLOW VALVE VHome 115 through 135 VHome 200 through 240 VHome 244 VHome EXIT...
  • Page 76 Note If flow valve with VHome setting of 200 - 240 is installed, also install the Thermistor Cable P/N 11399 (flow valve cable assy.) between the flow valve and the power PCBA (see illustration on page 8-61.) ® Page 6-38 Series Ventilator Service Manual p/n 10665, Rev.

  • Page 77: Temperature Compensation

    Temperature Compensation The Temperature Compensation menu is used to set the temperature compensation for the flow valve on or off. The Configuration menu is set up as follows: TEMP COMP TCOMP ON TCOMP OFF TCOMP EXIT 1) Use the set value knob to rotate between options. 2) To select an option, press the Select button while the desired option is displayed in the window.

  • Page 78: Analog Board Setting

    Analog Board Setting ® In LTV ventilators the Analog Board menu is used to tell the software which type of analog ® PCBA is installed in the ventilator. This menu exists for LTV ventilator models 900, 950 and 1000 exclusively. The Analog Board configuration menu is set up as follows: ANALOG BOARD ®...
  • Page 79 5) The analog board setting can be validated by displaying the model number under the VENT OP menu and then pressing Select. If “LTM” is displayed, then the analog board setting is appropriate. Refer to the labeling on the installed analog board to determine the part number and revision.

  • Page 80: O 2 Blender

    Blender ® In LTV 1000 ventilators, the O Blender menu is used to tell the software which model of O2 blender is installed in the ventilator. Note New model O2 blender (P/N 15079) must be installed, and correct selection of O2 blender Part Number must be made in order to achieve all extended features of ventilators with software version 5.0 and higher.

  • Page 81: Configuration Menu Exit

    Configuration Menu Exit To exit the configuration menu: 1) Press Select while CONFIG EXIT is displayed. 2) CONFIG is displayed. To access other Vent Maintenance menu options, turn the Set Value knob to the desired item and press Select. ® p/n 10665, Rev.

  • Page 82: Clear

    CLEAR The CLEAR menu is used to clear sections of the non-volatile EEPROM memory. The menu is set up as follows: CLEAR CLR EVENTS CLR CONTROLS CLR CAL CLR BAD REC (software 5.01 or greater only) CLR ALL CLR EXIT Use the set value knob to rotate between CLEAR options.

  • Page 83: Vent Maintenance Menu Exit

    Vent Maintenance Menu Exit To exit the vent maintenance menu: 1) Press Select while EXIT is displayed. 2) VENT MTNCE is displayed. To access the other main extended features menu options, turn the Set Value knob to the desired item and press Select. 3) To return the ventilator to normal operation, see the instructions under Vent Maintenance Exit at the beginning of this section.

  • Page 85: Chapter 7 - Troubleshooting

    WARNING Ventilator Service and Repair - Only service technicians who have been trained and certified by Pulmonetic Systems, Inc. are authorized to perform repairs or maintenance on ® the LTV series ventilators. Do not attempt to repair or replace any part of the ventilator unless you are trained and certified by Pulmonetic System, Inc.

  • Page 86: Displays And Buttons

    For information on resolving problems that are not listed here, contact Pulmonetic Systems using the contact information at the front of this manual.
  • Page 87 Symptoms Possible Causes What to Do Low Pressure display LOW PRES alarm The Low Pressure display is flashed and flashing. occurred. the LOW PRES message is displayed when a low pressure alarm occurs. The display will continue to flash even after the ®...
  • Page 88 Symptoms Possible Causes What to Do Ventilator is running Displays are blanked while To conserve battery life while running from but displays are on battery power. the internal battery, most of the displays turned off. are turned off when no changes are made to the control settings for 60 seconds.
  • Page 89 Symptoms Possible Causes What to Do Front panel ribbon cable Remove the power board to access the CONTINUED … not properly connected. ribbon cable connection on the main A control doesn't board. Disconnect and reconnect the front operate. panel ribbon cable connector. See Chapter 8 - Main Board Assembly for instructions.

  • Page 90: Ventilator Performance

    Ventilator Performance Symptoms Possible Causes What to Do Ventilator is auto Sense lines are reversed. The sense lines are not designed to be cycling, monitored removed from either the wye or the Luer volumes are very fittings. If the sense lines have been small, and RT XDCR removed and replaced incorrectly, they DATA item FTx...
  • Page 91 Symptoms Possible Causes What to Do Monitored volume is Very small ET tube A very small ET tube connected directly to high. connected directly to wye. the wye may cause jetting and cause the flow differential to be read incorrectly. To Delivered volume is reduce the jetting effect, add a short larger high.
  • Page 92 Symptoms Possible Causes What to Do Defective flow valve. Calibrate the flow valve. See Chapter 6 - CONTINUED… Flow Valve Calibration for instructions. Monitored volume is Perform the Advanced Vte Diagnostic high. Procedures, see page 7-22. Delivered volume is Defective turbine. Perform the Advanced Vte Diagnostic high.
  • Page 93 Symptoms Possible Causes What to Do CONTINUED … Leak Compensation is not Verify that the Leak Compensation extended features option is set to On Monitored volume is ® (default setting is off). See the LTV low. ® Series or LTV 800 Ventilator Operator's Manual for more information.
  • Page 94 Symptoms Possible Causes What to Do Delivered pressure is Circuit leak. Run a Leak Test and reseat or replace the low, PEEP is low, leaking parts or connections. See Chapter ventilator is auto 2 - Leak Test for instructions. cycling. High or low side sense line Check high and low pressure sense lines Delivered pressure is...
  • Page 95 Symptoms Possible Causes What to Do CONTINUED … Failed auto zero. Perform an auto zero under XDCR ZERO. ® ® See the LTV Series or LTV Delivered pressure is Ventilator Operator's Manual for more low, PEEP is low, information. ventilator is auto VHome setting does not Correct the VHome setting.
  • Page 96 Symptoms Possible Causes What to Do Delivered pressure is Diaphragm is incorrectly Open the exhalation valve and remove the high. seated in exhalation valve. diaphragm and spring. Reseat the spring and diaphragm valve and snap the peep Monitored pressure is valve or peepless valve cap back in place.
  • Page 97 Symptoms Possible Causes What to Do Delivered flow is high. High or low side sense line Check high and low pressure sense lines or elbow at patient wye to be sure they are correctly attached and Delivered flow is low. loose or leaking.
  • Page 98 Symptoms Possible Causes What to Do Sensitivity does not Circuit leak. Run a Leak Test and reseat or replace the appear to be accurate. leaking parts or connections. See Chapter 2 - Leak Test for instructions. Ventilator is auto cycling. Sense lines are reversed.
  • Page 99 Flow Chart (see Appendix E - inlet flow too high when Input O2 Flow Chart). Low O Source selected. Pulmonetic Systems recommends the use of an O monitor to verify delivered O Adjust the entrained O flow so the monitored value shows the desired FIO2.
  • Page 100 Source selected. correctly calculated and set using the Input O Flow Chart (see Appendix E - Input O2 Flow Chart). Pulmonetic Systems recommends the use of an O monitor to verify delivered O Adjust the entrained O flow so the monitored value shows the desired FIO2.
  • Page 101 Symptoms Possible Causes What to Do ® PEEP not working. Circuit leak. The LTV Series ventilator does not actively drive the exhalation valve to PEEP low. maintain PEEP. If there is a significant leak, the PEEP will drop over a long PEEP sags during exhalation.
  • Page 102 Symptoms Possible Causes What to Do Delivered and VHome setting does not Correct the VHome setting. See Chapter 6 monitored volumes, match flow valve. - Maintenance & Calibration. pressures, and Failed calibration. Recalibrate the vent. See Chapter 6 - sensitivity are off. Maintenance &...
  • Page 103 Symptoms Possible Causes What to Do Verify the sensitivity is set to an Ventilator is auto Circuit leak. appropriate value. For a high leak cycling environment, the sensitivity may need to Sensitivity does not be set higher to prevent auto cycling. appear to be accurate.
  • Page 104 Symptoms Possible Causes What to Do High or low sense lines are Verify lines are not occluded or pinched Condensation in sense occluded. and/or clear the lines with a low flow (less lines. than 10 Lpm) gas source. High or low sense ports in the wye are occluded.
  • Page 105 Symptoms Possible Causes What to Do When the battery charge circuit is running Ventilator makes a Battery charge circuit in bulk charge (the Charge Status LED is high pitched noise running. amber) the ventilator may emit a high when in Standby. pitched sound that some people can hear.

  • Page 106: Advanced Vte Diagnostic Procedures

    Advanced Vte Diagnostic Procedures If the ventilator Monitored Exhaled Volume (Vte) readout, Delivered Volume to the lung, Target Pressures or Inspired Volumes (LTM only) appear incorrect; perform the following checkout procedures. • When instructed to replace a subassembly/component that fails any of the following checkout procedures, verify the original problem is resolved once the subassembly/component has been replaced.
  • Page 107 Allow the unit to run for 1 minute and record the displayed Vte (average for 8 consecutive breaths). Then stand the unit upright, allow it to run for 1 minute and record the displayed Vte (average for 8 consecutive breaths). •...
  • Page 108 FVd Delivered Volume: Apply 15 cmH O to the flow valve differential transducer at the high side port and verify the FVd readout is within +/- 0.5 cmH O of the applied pressure. Disconnect the tube from the syringe to the high pressure port of the valve differential transducer so the connection is open to ambient air.
  • Page 109 Flow Valve Accuracy Checkout Check flow valve accuracy as follows: At the Tidal Volume setting which is giving failing results, press the Tidal Volume button and VCALC xxx Lpm will be displayed (this is the calculated peak flow for the set volume).

  • Page 110: Advanced Fio

    Advanced FiO Diagnostic Procedures Delivery of the correct percentage of oxygen (FiO ) is dependent on correct calibration of the oxygen pressure transducer, flow valve and O2 blender. If the FiO appears incorrect, perform the following diagnostic procedures. When instructed to replace a subassembly or component that fails any of the following checks, verify the original problem is resolved once the item has been replaced.
  • Page 111 If the flow output is out of the acceptable output flow range, perform the following, in the order shown. • Check all flow valve flexible tubing for leaks or occlusions and replace any damaged components. • Recalibrate the flow valve transducer (see Chapter 6 - Valve Differential Calibration).

  • Page 112: Power And Battery Operation

    Power and Battery Operation Problem Possible Causes What To Do The ventilator does not Defective AC source or Connect the ventilator to a known good AC power up. adapter and depleted source using a known good AC adapter. internal battery. Verify the power cord for the adapter is fully seated.
  • Page 113 Problem Possible Causes What To Do The ventilator doesn’t Defective AC source. Make sure the AC adapter is plugged into operate from external a good AC source and is securely AC adapter power cord power. connected to the ventilator. Verify the loose.
  • Page 114 Problem Possible Causes What To Do Battery Charge Status Internal battery charging. The Charge Status LED flashes amber LED is flashing amber. while the battery charging circuit evaluates the battery as a part of the charge cycle. If the battery is found to be OK, the Charge Status LED will change to solid amber while the battery is charging.

  • Page 115: Alarms

    Operator's Manual. Single occurrences of some alarms, such as HW FAULT or RESET may be caused by ESD. If these alarms recur, and for other alarms that do not usually occur during normal operation, follow the instructions in this section or contact Pulmonetic Systems using the contact information at the front of this manual.
  • Page 116 Symptoms Possible Causes What to Do Ventilator won’t Diaphragm installed Open the exhalation valve and remove the exhale, repeated backwards or incorrectly diaphragm and spring. Reseat the spring HIGH PRES alarms, seated in exhalation valve. and diaphragm valve and snap the peep turbine stops and valve or peepless valve cap back in place.
  • Page 117 Symptoms Possible Causes What to Do Exhalation drive line Check the exhalation drive line at both the CONTINUED … leaking or loose. ventilator and exhalation valve ends. Verify Repeated DISC/SENSE the line is securely seated and not leaking. Exhalation valve leaking alarms.
  • Page 118 Symptoms Possible Causes What to Do HW FAULT alarm. HW FAULT alarms: Check the Event Trace to determine the kind of error and follow the instructions AD MMTCH below for the specific error type. (See the AD MTCH1 ® ® Series or LTV 800 Ventilator EEPROM...
  • Page 119 - Memory Board for instructions. Defective main board. Replace the main board. See Chapter 8 - Main Board Assembly for instructions. All other causes. Contact Pulmonetic Systems. NO CAL DATA alarm. Failed or missing Recalibrate the vent. See Chapter 6 - calibration records.
  • Page 120 Symptoms Possible Causes What to Do Defective main board. Replace the main board. See Chapter 8 - Main Board Assembly for instructions. Defective memory Replace the memory board. See Chapter 8 board. - Memory Board for instructions. ® Page 7-36 Series Ventilator Service Manual p/n 10665, Rev.

  • Page 121: Checkout Test Failures

    Checkout Test Failures Symptoms Possible Causes What to Do ALARM Test Alarm volume set too high. Set the alarm volume under the Extended ® Features Menu. (See the LTV Series or Audible alarm too loud. ® 800 Ventilator Operator's Manual for an explanation of the ALARM VOL feature.) ALARM Test...
  • Page 122 Symptoms Possible Causes What to Do CONTROL Test Wrong model selected in Verify the correct MODEL has been maintenance mode. selected in VENT MTNCE. See Chapter 6 Message is not - Maintenance & Calibration. displayed when Volume / Pressure Mode button, Pressure Control button, O button, or Low Pressure O...
  • Page 123 LED did not last 15 seconds (fail). Discontinue use of the ventilator and Vent Inop Alarm Test Unknown contact Pulmonetic Systems for Vent Inop alarm tone information. and/or LED fails test. Vent Inop Alarm Test Ventilator does not have...
  • Page 124 Symptoms Possible Causes What to Do Replace the power board. (See Chapter 8 - Defective power board. Assembly Power Board ® WDOG Test Early version of software. In earlier LTV Series Ventilator software versions, the ventilator goes Inop instead Vent does not reset of performing a reset.

  • Page 125: Test Lung Operation

    Pressure> 40 cmH O used The compliance characteristics of some higher than set on small test lung small test lungs (Pulmonetic Systems or pressure on test lung. (Pulmonetic Systems or Siemens 190) cause incorrect readings Siemens 190.) when high pressures are used. For these...

  • Page 127: Chapter 8 - Component Removal And Replacement

    Pulmonetic Systems, Inc. are authorized to perform repairs or maintenance on the LTV® series ventilators. Do not attempt to repair or replace any part of the ventilator unless you are trained and certified to do so by Pulmonetic Systems, Inc. Personal injury could result.

  • Page 128: Tools

    If a problem occurs while maintaining the LTV Series ventilator or if you require additional information, contact a service technician who has been trained and certified by Pulmonetic Systems or Pulmonetic Systems, Inc. at: Pulmonetic Systems, Inc. 17400 Medina Rd., Suite 100...

  • Page 129: Before Removing The Back Panel

    Before removing the back panel The following cautions should be followed when performing any maintenance or service procedures on the ventilator: CAUTION Opening the ventilator - Always turn the ventilator OFF and remove the external power before opening the ventilator case or attempting to service the ventilator. Anti-static precautions - Always wear a grounded anti-static wrist strap when handling the ventilator with the case open.

  • Page 130: Boots, Protective

    Boots, Protective Rubberized protective boots are installed on the top and bottom of all current versions of ® ventilators to protect against accidental shocks and strikes to the casing. This section is divided into four sub-sections to accommodate the removal, replacement, or installation of the boots under the following conditions: •...

  • Page 131: Boots, Temporary Removal

    Retain the screws and finish washers for reuse when the upper boot is reinstalled. Remove the upper boot. Contained in Pulmonetic Systems Replacement Screws kit, P/N 11149. See Appendix E - Reference Information, External Accessories Screw Location, Type and Length for additional information.
  • Page 132 To temporarily remove the Lower Protective Boot Lay the ventilator down (front up) and use a Philips-head screwdriver to remove the four flat-head mounting screws and finish washers in the sides of the lower boot, as indicated in the illustration below. Retain the screws and finish washers for reuse when the lower boot is reinstalled.

  • Page 133: Boots, Permanent Removal

    Using a screw of the wrong length in this location can cause the ventilator to malfunction resulting in possible harm to the patient. Contained in Pulmonetic Systems Replacement Screws kit, P/N 11149. See Appendix E - Reference Information, External Accessories Screw Location, Type and Length for additional information.
  • Page 134 Insert and thread two 1/4” flat-head mounting screws with finish washers into the screw holes in the ventilator’s side panels, as shown in the illustration. • Finish washers should be already in place. Torque tighten the mounting screws to these specified values •...
  • Page 135 To permanently remove the lower protective boot Lay the ventilator down (front up) and use a Philips-head screwdriver to remove the four flat-head mounting screws and finish washers in the sides of the Lower Protective Boot, as indicated in the illustration below. Remove the lower boot and insert and thread four 1/4”...

  • Page 136: Boots, Reinstallation

    Using a screw of the wrong length in this location can cause the ventilator to malfunction resulting in possible harm to the patient. Contained in Pulmonetic Systems Replacement Screws Kit, P/N 11149 See Appendix E - Reference Information, External Accessories Screw Location, Type and Length for additional information.
  • Page 137 Torque tighten the mounting screws to these specified values. • Torque tighten the screws in the legs of the boot to 60 in-oz (0.42 Nm) • Torque tighten the screws in the sides of the boot to 20 in-oz (0.14 Nm) CAUTION Damage to finish washers -Do not over tighten screws to avoid damage to the finish washers...
  • Page 138 To reinstall the lower protective boot Lay the ventilator down (front up) and orient the lower boot to the ventilator as shown in the illustration below. Move the boot into position on the bottom of the ventilator and align its four screw holes with the corresponding holes in the ventilator side panels.

  • Page 139: Boots, New Installation

    Using a screw of the wrong length in this location can cause the ventilator to malfunction resulting in possible harm to the patient. Contained in Pulmonetic Systems Protective Boots Installation Kit, P/N 11550 Contained in Pulmonetic Systems Replacement Screws kit, P/N 11149.
  • Page 140 Torque tighten the mounting screws to these specified values • Torque tighten the screws in the legs of the boot to 60 in-oz (0.42 Nm) • Torque tighten the screws in the sides of the boot to 20 in-oz (0.14 Nm) CAUTION Damage to finish washers -Do not over tighten screws to avoid damage to the finish washers.
  • Page 141 To install the lower protective boot Lay the ventilator down (front up) and use a Philips-head screwdriver to remove the four flat-head mounting screws in the ventilator’s side panels, as indicated in the illustration below. • Do not remove the mating finish washers. Orient the lower boot to the ventilator as shown in the illustration below.

  • Page 142: Ltm/Ltv Mounting Assembly Installation And Removal

    LTM/LTV mounting assembly installation and removal Parts Required for Installation: Tools required: Components • Phillips screwdriver with torque meter ® The LTM™ to LTV mounting assembly, p/n 17916-001, • 7/64” Allen wrench which contains: • ® LTM™ to LTV mounting bracket (1), p/n 17918-001 ®...

  • Page 143: Ltm Mounting Assembly Temporary Removal (Current Ltms)

    LTM mounting assembly temporary removal (current LTMs) Parts required for replacement: Tools required: • • None Phillips screwdriver with torque meter • 7/64” Allen wrench Lay the disconnected ventilator on a clean dry surface. Use a 7/64” Allen wrench to remove the three screws from the mounting block located in the center of the LTM mounting assembly (as shown below).

  • Page 144: Ltm Mounting Assembly Permanent Removal (Current Ltms)

    LTM mounting assembly permanent removal (current LTMs) Parts required for replacement: Tools required: • • Replacement Screws Kit, P/N Phillips screwdriver with torque 11149 meter ® Remove the LTM/ LTV mounting assembly (see instructions on page 8-25). ® One leg of the LTM/ LTV mounting assembly has a circular notch just above the elongated screw slot.

  • Page 145: Ltm Mounting Assembly Re-Installation (Current Ltms)

    LTM mounting assembly re-installation (current LTMs) Parts required for replacement: Tools required: • • Replacement Screws Kit, P/N 11149 Phillips screwdriver with torque meter • 7/64” Allen wrench Position the ventilator and mounting assembly as shown in the illustration below. Place the mounting assembly onto the ventilator and align the screw slots with the corresponding screw holes in the ventilator.
  • Page 146 Insert and thread a #4-40 pan-head screw (screw length as indicated in the detailed illustration) through the screw slot in the right leg of the mounting bracket. Insert and thread four #4-40 X 3/8” pan-head screws through the screw slots in the left leg and top of the mounting bracket, as indicated in the illustration.

  • Page 147: Ltm Mounting Assembly Installation (Current Ltms)

    LTM mounting assembly installation (current LTMs) Remove the upper boot (if installed). See Boots, Protective in this chapter for instructions. WARNING Mounting screw use – Internal damage to the ventilator may result if the wrong length mounting screws are used when installing or removing external accessories. Accessory mounting screws - Refer to the information supplied with replacement screws kit, P/N 11149, to determine the appropriate accessory mounting screws or accessory ®...
  • Page 148 To attach the LTM mounting assembly (p/n 17916-001): 1) Place the disconnected ventilator on a clean, dry surface. 2) Use a Philips screwdriver and remove the five screws from the top and back panel of the ventilator, as indicated in the illustration.
  • Page 149 • For earlier version LTV ventilators, with the screw located in the upper half of the slot use a 5/16” pan-head • For current version LTV ventilators with the screw located in the lower half of the slot, use a 3/8” pan head 6) Insert and thread four #4-40 X 3/8”...

  • Page 150: Ltm/ Ltv ® Mounting Bracket (Earlier Model Ltms)

    LTM/ LTV mounting bracket (earlier model LTMs) ® Earlier model LTM Graphics Monitors require a two piece mounting assembly as shown below. WARNING Mounting screw use – Internal damage to the ventilator may result if the wrong length mounting screws are used when installing or removing external accessories. Accessory mounting screws - Refer to the information supplied with the replacement screws kit, P/N 11149, to determine the appropriate accessory mounting screws or accessory replacement screws to use when removing or exchanging external accessories...

  • Page 151: Ltm/Ltv Mounting Bracket Temporary Removal (Earlier Model Ltms)

    LTM/LTV mounting bracket temporary removal (earlier model LTMs) Parts required for replacement: Tools required: • • None Phillips screwdriver with torque meter • 7/64” Allen wrench To temporarily remove the LTM/LTV mounting bracket: Lay the disconnected ventilator on a clean dry surface. Use a 7/64” Allen wrench to remove the three mounting block screws and mounting block, as shown below.

  • Page 152: Ltm/Ltv Mounting Bracket Permanent Removal (Earlier Model Ltms)

    LTM/LTV mounting bracket permanent removal (earlier model LTMs) Parts required for replacement: Tools required: • • Replacement Screws Kit, P/N 11149 Phillips screwdriver with torque meter ® To permanently remove the LTM/LTV mounting bracket: ® Remove the LTM/ LTV mounting block and bracket (see instructions on page 8-25). ®...

  • Page 153: Ltm/Ltv Mounting Bracket, Reinstallation (For Earlier Model Ltms)

    LTM/LTV mounting bracket, reinstallation (for earlier model LTMs) ® Parts required for replacement: Tools required: • • Replacement Screws Kit, P/N 11149 Phillips screwdriver with Replace if damaged: torque meter • ® • LTM/ LTV mounting bracket, P/N 11125 7/64” Allen wrench •...
  • Page 154 Orient the mounting block to the mounting bracket as shown in the illustration, and align ® its three counter bored screw holes to the corresponding PEM nuts on the bracket. Insert three mounting block screws, use a 7/64” Allen-wrench and torque tighten to 60 in-oz (0.42 Nm).

  • Page 155: Ltm/Ltv Mounting Bracket Installation (Earlier Model Ltm)

    ® Contained in Pulmonetic Systems LTM to LTV Mount Assembly Kit, P/N 11003. See Appendix E - Reference Information, External Accessories Screw Location, Type and Length for additional information.
  • Page 156 WARNING Specific bracket screw location – Different screws are required depending on the version of LTV® being serviced. Use of incorrect screws can cause ventilator failure with resulting harm to the patient. ® One leg of the LTM/ LTV mounting bracket has a circular notch just above the elongated screw slot (see illustration).

  • Page 157: Back Panel

    Back Panel Back Panel, Removal ® 1) If installed, remove the LTV protective boots (see instructions on page 8-5) and the ® LTM/ LTV mounting bracket (see instructions on page 8-25). 2) Turn the ventilator face down. Remove the 6 flat-head screws and gray finish washers from the right and left sides of the ventilator as shown (3 from each side).

  • Page 158: Dovetail Mounting Bracket, Replacement

    (see instructions on page 8-31). • The internal battery cover and internal battery do not need to be removed. Contained in Pulmonetic Systems Dovetail Replacement Kit, P/N 11493. Pop Rivet tool capable of setting the .114” diameter shaft, Pop Rivets. ®...
  • Page 159 2) Prepare to drill out the existing pop rivets in the dovetail bracket by placing a block under the back panel that supports the area directly below the pop rivets. This will prevent the bottom of the back panel from becoming deformed or damaged when drill pressure is applied (see example in illustration).
  • Page 160 6) To fasten the dovetail mounting bracket, back panel and dovetail mounting plate together, use a pop rivet tool to insert and set a .114” diameter shaft pop rivet into each of the four holes. 7) Thoroughly clean both sides of the back panel and visually inspect for pop rivet debris prior to reinstallation.

  • Page 161: Back Panel, Reinstallation

    The Dovetail Mounting Bracket is contained in Pulmonetic Systems Dovetail Replacement Kit, P/N 11493 Contact Pulmonetic Systems for back panel replacement information. To ensure the advantage of all new features and reliability improvements, Pulmonetic Systems requires that ® the LTV ventilator’s operating software be at, or higher than, version 3.13 when performing any Maintenance...
  • Page 162 Motor 4-wire lead wires. If not, install them at this time. See To replace the Flow Valve assembly on page 8-59 for instructions. For all LTV series ventilators verify that a current version power PCB has been installed with software version 3.13 or higher. If not, install them at this time.
  • Page 163 See To replace the Power PCBA and DC Cord Pigtail related hardware on page 8-93, To replace the Solenoid Manifold on page 8-105 and To remove and replace the Memory Board on page 8-77 for instructions. 11) Visually inspect the flexible tubes on the solenoid manifold to verify there are no tears, rips, pinholes or loose connections.
  • Page 164 21) Position the back panel over the ventilator. Slide the bottom edge of the back panel beneath the connecting upper-Weldment edge at the bottom of the case. Be sure that the louvers in the bottom edge of the back panel are hooked under the bypass tube from the turbine to the flow valve.

  • Page 165: Internal Flexible Tube Routing Configurations

    Internal Flexible Tube Routing Configurations ® There are various different routing configurations of the LTV Series ventilator internal flexible tubing connected to the solenoid manifold, flow valve and analog board components. ® Configuration versions vary in accordance with the LTV model, date of manufacture and analog board configuration installed.

  • Page 166: Ltv ® 900, 950 And 1000 Current Version Tube Routing Diagrams

    900, 950 and 1000 Current Version Tube Routing Diagrams ® ® Page 8-40 Series Ventilator Service Manual p/n 10665, Rev. K...
  • Page 167 ® p/n 10665, Rev. K Series Ventilator Service Manual Page 8-41...

  • Page 168: Ltv ® 900, 950 And 1000 Earlier Version Tube Routing Diagrams

    900, 950 and 1000 Earlier Version Tube Routing Diagrams ® ® Page 8-42 Series Ventilator Service Manual p/n 10665, Rev. K...
  • Page 169 ® p/n 10665, Rev. K Series Ventilator Service Manual Page 8-43...

  • Page 170: Ltv ® 800 Current And Earlier Tube Routing Diagram

    800 Current and Earlier Tube Routing Diagram ® ® Page 8-44 Series Ventilator Service Manual p/n 10665, Rev. K...

  • Page 171: Alarm Sounder Assembly

    Alarm Sounder Assembly Parts required for replacement: Tools required: • • Sounder Bracket P/N 10119 Phillips screwdriver with torque meter • Sounder Assembly P/N 17432-001 • Grounded anti-static wrist • Soft Sides 10105 (left) and 10106 (right) strap • Alarm Bumper P/N 10573 Replace if damaged: •...
  • Page 172 8) If an earlier version sounder assembly without a ground clip on the sounder body was previously installed in the sounder location; remove the (3) grounding clips from the alarm sounder cut-out in the right side of the upper weldment (see illustration below) before installing the current version sounder assembly with a ground clip installed on the sounder body.
  • Page 173 10) Line the sounder bracket up with the sounder and the mounting hole in the side panel. • Orient the sounder assembly to align the slot in the grounding clip with the hole in the sounder bracket, as shown. • Replace the pan-head screw in the sounder bracket and torque tighten to 60 in-oz (0.42 Nm).

  • Page 174: Analog Board Assembly

    Analog Board Assembly Parts required for replacement: Tools required: • • Analog PCBA Assembly P/N 10136 or * Phillips screwdriver with torque meter • Analog PCBA Assembly P/N 10643 or * • Grounded anti-static wrist • Analog PCBA Assembly P/N 11803* strap * See chart below for appropriate selection by model.
  • Page 175 ® For LTV 1000 models, remove the Pisco connector from the oxygen pressure transducer. To do this, pinch the two white collars on the Pisco connector toward each other and slide the Pisco connector off the oxygen pressure transducer. Remove the two screws that attach the analog board to the power board and remove the analog board.
  • Page 176 Note The use of hardware with revision levels lower than the most current revision available may result in some new software features not functioning. Contact Pulmonetic Systems for additional information. Install the new analog board and replace the two mounting screws (if not previously installed, replace the screws with two ¼...

  • Page 177: External Inlet Filter

    External Inlet Filter The External Inlet filter should be removed and cleaned once a month. If the ventilator is being operated in high dust or humidity environments, it may need to be cleaned more often. If the filter is damaged or can not be thoroughly cleaned, it should be replaced. Parts required for replacement: Tools required: •...

  • Page 178: Fan Assembly

    Fan Assembly Parts required for replacement: Tools required: • • Fan Assembly P/N 10675 Phillips screwdriver with torque meter • Replace if damaged: Grounded anti-static wrist strap • 5/8" Flat-head Screw (2) P/N 10499 • Nut (2) P/N 10342 If not already installed: •...
  • Page 179 6) For Filterless fan Housing: Install the new fan assembly oriented so the fan label faces the outside of the vent and the fan wires are in the corner closest to the power board. Flow direction indicator should be directed towards the outside of the unit.

  • Page 180: Cleaning The Fan Filter

    Cleaning the Fan Filter The fan filter should be removed and cleaned at least once a month. If the ventilator is being operated in high dust or humidity environments, it may need to be cleaned more often. If the filter is damaged or can not be thoroughly cleaned, it should be replaced. To clean the fan filter: 1) Using a small screwdriver or long nose pliers, detach the fan filter grill from its housing.

  • Page 181: Flow Valve Assembly And Cleaning Instructions

    Flow Valve Assembly and Cleaning Instructions Parts required for replacement: Tools required: • • Flow Valve Assembly P/N 10019 Phillips screwdriver with torque meter • Silicone Gel Lubricant P/N 10123 • Grounded anti-static wrist strap • Thermistor Cable P/N 11399 •...
  • Page 182 Disconnect the bypass tubing from the connector at the base of the flow valve. Flow Valve Cleaning Procedure In certain cases, dust and other particulates may gather on the Poppet of the Flow Valve. This can lead to a slight decrease in flow, and therefore delivered volume, which is most noticeable when the calculated peak flow (Vcalc) is relatively low (<30LPM).
  • Page 183 FIGURE 1 4) Wrap the alcohol wipe around the Flow Valve Poppet as shown below in FIGURE 2, and pull forward and back several times to wipe the surface of the Flow Valve Poppet (See FIGURE 3 for detail of Poppet surface.) FIGURE 2 ®...
  • Page 184 FIGURE 3 5) To remove the alcohol wipe, lightly push the opposite (Step motor) end of the push rod while gently pulling on the wipe. This aids in removing foreign matter from the Flow Valve seat. 6) Using a fresh alcohol wipe, repeat Steps 1 through 5 several times, or more if needed, to remove all substances from the Flow Valve Poppet surface.
  • Page 185 To replace the flow valve assembly: If Spiral Wrap and a Warning label have previously been installed on the flow valve’s Stepping Motor 4-wire leads, proceed to step 4); otherwise continue. Wrap the 4-wire stepping motor lead wires with a 4.25” length of Spiral Wrap, P/N 10919, as shown below.
  • Page 186 Apply a small amount of silicone gel lubricant to the flat surface area on the valve sealing gasket. Apply a small amount of silicone gel lubricant to the Mylar sheet insertion tool. Place the Mylar sheet insertion tool against the turbine manifold where it will contact the flow valve sealing gasket.
  • Page 187 Carefully route the Thermistor Cable through the tubing, through the notch in the analog PCBA, and connect it to JP8 on the power board. If the flow valve being installed has a VHome value of 200-240, and the power board does not have a header in the JP8 position, then the power board should be replaced with one that does have the necessary header.
  • Page 188 13) Connect the top flexible tube (clear on all configurations) from the flow valve to port #5 on the solenoid manifold as shown. (Note difference in location of Valve Differential transducer between internal flexible tube routing configurations; see pages 8-39 through 8-44.) 14) Connect the 3-wire connector to the power board and the 4-wire connector to the motor board.
  • Page 189 17) Select the VHome setting that is appropriate for your flow valve and press Select (see instructions on page 6-37.) If flow valve has: Use VHome setting: Two clear flexible tubes One clear flexible tube and One clear flexible tube with a yellow flag One clear flexible tube and One opaque orange flexible tube (range = 115 - 135)
  • Page 190 Front Panel Parts required for replacement: Tools required: ® For LTV 800: • Phillips screwdriver with torque meter • P/N 11806-1 Membrane Switch Panel • Dental pick or flat tip • Overlay Panel English P/N 11806-2 screwdriver • Grounded anti-static ®...
  • Page 191 Parts required for replacement: Tools required: • P/N 10114-4 Overlay Panel Spanish • P/N 10114-5 Overlay Panel German • P/N 10114-6 Overlay Panel French • P/N 10114-7 Overlay Panel Italian • Overlay Panel Portuguese P/N 10114-8 ® For LTV 1000 (with I/E Hold): •...
  • Page 192 To replace the Front Panel: Remove the back panel of the ventilator and disconnect the internal battery cable (see instructions on page 8-31). Remove the motor board (see instructions on page 8-80). Disconnect from the solenoid manifold: The 3 flexible tubes connected to the side panel of the ventilator, and the 2 flexible tubes going to the flow valve.
  • Page 193 Using a dental pick or flat tip screwdriver, lift one corner of the membrane panel and overlay. Pull the membrane panel and overlay away from the upper weldment. Removing the panel will destroy it. Remove all adhesive or panel parts from the front of the upper weldment. The surface must be clean and free of obstructions before installing the new panel.
  • Page 194 16) Replace the Alarm sounder, (see instructions on page 8-45). 17) Reconnect the 2-wire fan connector, 3-wire flow valve connector, 4-wire rotary switch connector, and 2-wire sounder connectors to the power board. • These keyed connectors can only be installed in one direction and will snap into place when properly connected.

  • Page 195: Internal Battery Pack

    Internal Battery Pack Parts required for replacement: Tools required: • • Internal Battery Replacement Kit, P/N Phillips screwdriver with torque 11636, with Battery Assembly P/N 10140 meter • and Side Seal (2) P/N 10881. Grounded anti-static wrist strap Replace if damaged: •...
  • Page 196 6) Remove the old internal battery assembly and replace it with a new one. • Orient the battery as shown below (fuse side up for earlier version batteries) and place it in the battery well. • Inspect the shrink-wrap covering the battery cables to be sure it is intact. 7) If not previously installed, install the battery cover Side Seals, P/N 10881 (2 halves per part number, 3 halves required, discard unused half) as shown below;...
  • Page 197 ® 9) Place a LTV Battery Replacement Label P/N 10927 on the top surface of the Battery Cover. The label should be orientated such that it can be read while you have the battery compartment closest to you and the flange with the grounding clips (P/N 10752) is farthest away.

  • Page 198: Internal Inlet Filter

    Internal Inlet Filter The interior inlet filter should be removed and cleaned every 2 years or 10,000 hours. If the filter is damaged or can not be thoroughly cleaned, it should be replaced. Parts required for replacement: Tools required: • Replace if damaged: Phillips screwdriver with torque meter •...

  • Page 199: Main Board Assembly

    Main Board Assembly Parts required for replacement: Tools required: • • Main PCBA Assembly P/N 10133 Phillips screwdriver with torque meter Replace if damaged: • Grounded anti-static wrist strap • 1/4" Pan-head Screw (3) P/N 10435 If not previously installed: •...
  • Page 200 Handle the ribbon cable carefully to prevent any damage to the silver contact area. Attempting to remove the ribbon cable without opening the ZIF connector will damage the ribbon cable and may require replacing the front membrane panel. Slide the ZIF connector on the keypad ribbon cable open and carefully remove the ribbon cable from the connector.
  • Page 201 10) Hold the ribbon cable out of the way and remove the main board. Use caution: do not scratch the ribbon cable with the edge of the board - even minor scratches on the ribbon cable connections can cause the keypad connections to fail. 11) Remove the Memory Board from the main board (see instructions on page 8-77).
  • Page 202 21) When LEDs are aligned, return all DIP switches to the default positions as shown below. 20) Reconnect the flexible tubes to the solenoid manifold following the internal flexible tube routing configuration/diagram previously noted (see pages 8-39 through 8-44). Inspect all flexible tubes for tears at the connecting ends and replace worn or damaged tubes if necessary.

  • Page 203: Memory Board

    Memory Board The memory board contains the software that operates the ventilator. The Memory Board should need to be replaced only when upgrading the software to a new version. It is a generally a good practice to upgrade the ventilator software to the most current released version at the time the ventilator is being serviced.
  • Page 204 2) Remove the programmed memory PCBA from its supporting rails by gripping the corners firmly between two fingers and pulling it out. 3) Current version memory boards are equipped with a JP3 connector. Verify the jumper is installed in the normal operation position of the JP3 connector (as shown), prior to installing the memory board.

  • Page 205: Checking The O2 Blender When Upgrading Software

    Checking the O2 Blender when upgrading software The LTV 1000 hardware configuration must be identified prior to upgrading the software to Version 5.0 or greater to establish whether the O2 blender labeling needs to be changed. Note The LTV 950, LTV 900, LTV 800 may be upgraded to 5.0 or greater regardless of hardware configuration and without any labeling changes required.

  • Page 206: Motor Board Assembly

    Motor Board Assembly Parts required for replacement: Tools required: • • Motor PCBA Assembly P/N 10135 Phillips screwdriver with Replace if damaged: torque meter • • 7/16" Pan-head Screw (4) P/N 10433 Grounded anti-static wrist strap If not already installed: •...
  • Page 207 5) For ventilators previously equipped with a power connector shield assembly, temporarily loosen the 2 flat-head screws in the side panel and remove the shield by pulling it straight up and out of the ventilator. Discard the shield (it is not to be reinstalled) and torque-tighten the screws to 60 in-oz (0.42 Nm).

  • Page 208: Blender Assembly / O Inlet Block

    Blender Assembly / O Inlet Block Parts required for replacement: Tools required: • • Blender Assembly P/N 17475-001 or O Inlet Block Phillips screwdriver with P/N 10639 torque meter • • Cable Tie P/N 10466 Grounded anti-static wrist • strap Donut Seal P/N 10603 •...
  • Page 209 O2 blender model differences When removing and re-installing the O2 blender it is important to understand the differences between the older model blender, P/N 10051 and its functionality with different software versions and the current model blender, P/N 15079-001. The illustration below highlights the differences in pressure range between the blenders when combined with differing levels of software.
  • Page 210 To remove the Turbine Manifold and Oxygen blender: Remove the back panel and disconnect the battery (see instructions on page 8-31). Remove the left soft side (see instructions on page 8-102). Remove the motor board (see instructions on page 8-80). Remove the flow valve (see instructions on page 8-55).
  • Page 211 To replace the thermo conductive pad: Peel the Thermo Conductive Pad off. If there is any adhesive residue left on the inside of the upper weldment or the turbine assembly, remove it by washing with a mild cleaner. Remove the protective backing from the smooth side of the new Thermo Conductive Pad and center it on the turbine surface.
  • Page 212 To install the Turbine Manifold and Oxygen Blender: Slide the turbine manifold and oxygen blender into place. Be sure not to catch any tubing or wiring under the manifold while it is being installed. Replace the 4 screws into the turbine manifold. Screws should be torqued to 20 in-oz (0.14 Nm).
  • Page 213 Check the rubber grommets (P/N 10630) and grounding clips (P/N 10752) on the oxygen blender mounting for wear and replace if necessary. Replace the four (4) blender mounting screws (P/N 10176) and metal washers (P/N 10594). Use a straight edged screwdriver or pick to prevent each of the clips from turning as the screws are tightened.
  • Page 214 Connect the 8-wire connector from the oxygen blender to the power board. The connector is keyed to fit in only one direction and will snap into place. Tuck the wrapped wires and oxygen tube down along the side of the turbine manifold against the power board.

  • Page 215: Blender Filter

    Blender Filter The O inlet filter should be cleaned or replaced every 10,000 hours or 2 years of service or more frequently if needed. If the ventilator is operated with a low grade or contaminated O source, the O inlet filter may need to be replaced more often. If the filter is damaged or cannot be thoroughly cleaned, it should be replaced.

  • Page 216: O2 Blender Cap (Ltv 1000 Only)

    O2 Blender Cap (LTV 1000 Only) Parts required for replacement: Tools required: • • O2 blender cap kit P/N 15016-001 Philips screwdriver with torque If not already installed, the O2 Blender Cap should be installed as follows: 1) Place the unit face up on a clean surface. Remove the bottom right O2 blender screw as illustrated.

  • Page 217: O2 Port Cap (Low Pressure)

    O2 Port Cap (Low Pressure) Parts required for replacement: Tools required: • • Low Pressure O2 Port cap P/N 14446 Philips screwdriver with torque If not installed, the Low Pressure O2 Port cap, should be installed as follows: Place the unit facing up on the workstation. Remove one of the bottom Phillips head screws and washers adjacent to the oxygen port.

  • Page 218: Power Board Assembly

    Power Board Replacement Kits: ® Pulmonetic Systems offers three different power board replacement kits for the LTV Series ventilators. Review the information shown below to identify which power board kit would be appropriate for the specific ventilator being serviced.
  • Page 219 Disconnect the flexible tubes from the right edge of the solenoid manifold. Contained in Pulmonetic Systems Power PCBA w/DC Cord Replacement Kit, P/N 11590 Contained in Pulmonetic Systems Power PCBA w/Memory Board Replacement Kit, P/N 14425 The Power PCB Separator tool is available separately, or as part of the Maintenance Calibration Kit, P/N 11566.
  • Page 220 Note Prior to disconnecting or removing any of the tubes, review the Internal Flexible Tube Routing Configurations table and diagrams (see pages 8-39 through 8-44). Identify the diagram for tube routing configuration that exists in the ventilator being serviced. Refer to this diagram when reconnecting the tubes to the current configuration.
  • Page 221 10) For ventilators equipped with a pigtail cable assembly; • The electrical connector interface bracket is not connected to the power board and is removed by pulling it straight up and off the power board connectors and the molded strain relief portion of the pigtail cable assembly. •...
  • Page 222 13) Remove the power board, flexing the left side panel slightly out of the way. 14) Disconnect the two 2-wire connectors from the solenoids and remove the remaining mounting screw (used with earlier version power boards) or mounting nut (used with current version power boards) from the solenoid manifold.
  • Page 223 17) Slide the solenoid manifold. over the threaded mounting stud on the power board. Align the solenoid leads with the JP17 connector on the power board being installed and press the solenoid manifold into place. 18) Thread one 1/4” solenoid manifold mounting nut (P/N 10342) onto the power board mounting stud protruding through the solenoid manifold (as...
  • Page 224 22) Insert and thread two 7/16” pan-head screws (P/N 10433), one into the mounting hole closest to U36 on the power board and one into the mounting hole nearest the sounder location. Torque-tighten both screws to 60 in-oz (0.42 Nm). 23) Insert a 7/8”...
  • Page 225 25) Insert the cylindrical connector-end of a pigtail cable assembly over the power board and through the keyed-round hole of the upper weldment from the inside of the upper weldment. Slide the pigtail cable assembly through the hole in the upper weldment until the strain relief on the pigtail cable assembly protrudes through the keyed-round hole in the upper weldment.
  • Page 226 29) Verify the power board mating connector pins are straight and place the Motor PCBA on the four threaded stand-offs on the power board and orientated such that the connector pins on the power board are indexed into the matching connector holes in the Motor PCBA.
  • Page 227 Contained in Pulmonetic Systems Power PCBA Replacement Kits, P/N 14157, P/N 14425 and P/N 11590. ® p/n 10665, Rev. K...

  • Page 228: Right And Left Soft Side Panels

    Right and Left Soft Side Panels Parts required for replacement: Tools required: • Replace if damaged: Phillips screwdriver with torque meter • Left Soft Side P/N 10105 • Grounded anti-static wrist • Right Soft Side P/N 10106 strap • 1/2" Flat-head Screw (3 each side) P/N 10338 •...

  • Page 229: Rotary Switch (Set Value Knob) Assembly

    Rotary Switch (Set Value Knob) Assembly Parts required for replacement: Tools required: • Phillips screwdriver with torque meter • Rotary Switch Replacement Kit P/N 14271 • 2 small flat tip screwdrivers or dental picks • Rotary Switch (with hex nut) P/N 11190 •...
  • Page 230 6) Place the O-Ring (P/N 11645) inside the Washer (P/N 11644), insert them through the openings in the power and main boards and center both over the Rotary Knob shaft cutout in the upper weldment. 7) Insert the new rotary switch assembly (P/N 11190) through the openings in the power and main boards so the shaft extends through the O-ring, washer and cutout in the upper weldment.

  • Page 231: Solenoid Manifold Assembly

    Solenoid Manifold Assembly Parts required for replacement: Tools required: • • Solenoid Manifold Assembly P/N 10710 Phillips screwdriver with torque meter • Solenoid Manifold Assembly P/N 14125 • If not already installed: 1/4” Nut Driver adapter for torque wrench • Power PCB P/N 15000 (see page 8-92 for instructions) •...
  • Page 232 WARNING Mounting Screw Use – Make sure the correct length mounting screws are used as specified in the instructions or internal damage to the ventilator may result. 5) To install the Solenoid PCBA. Slide the solenoid manifold over the threaded mounting stud on the power board, carefully align the solenoid contact pins with the JP17 connector on the power board and press the solenoid manifold into place.

  • Page 233: Thermo Conductive Motor Board Heatsink Pad

    Thermo Conductive Motor Board Heatsink Pad Thermo conductive pads should be replaced any time they have hardened, and at 30,000 hours. The motor board heat sink pad is located on the inside of the back panel. Parts required for replacement: Tools required: •...

  • Page 234: Thermo Conductive Turbine Pad

    Thermo Conductive Turbine Pad Thermo conductive pads should be replaced any time they have hardened, and at least at the 30,000 hour service. The turbine heat sink pad is located between the inside of the upper weldment and the turbine. Parts required for replacement: Tools required: •...

  • Page 235: Turbine Manifold

    Turbine Manifold Parts required for replacement: Tools required: • • Turbine Manifold Assembly P/N 11490 Phillips screwdriver with • torque meter Cable Tie P/N 10466 • • Grounded anti-static Donut Seal P/N 10603 wrist strap • Silicone Gel Lubricant P/N 10123 •...
  • Page 236 Disconnect the O tube from the oxygen pressure transducer on the analog board (LTV 1000 blender only). Disconnect the turbine's 3-wire and 5-wire connectors from the motor board. Disconnect the bypass tubing from the connector at the base of the turbine manifold. Remove the 4 screws labeled from the turbine manifold.
  • Page 237 To connect the new Turbine Manifold to the Oxygen Blender: Handle the manifold and blender carefully so as not to break the silicone seal around the oxygen tube entering the manifold. If this seal is damaged, repair with RTV silicone. Cut the cable tie that is holding the tube connection to the oxygen blender or oxygen bleed-in block.
  • Page 238 Check the rubber grommets and grounding clips on the oxygen blender mounting for wear and replace if necessary. Replace the 4 blender mounting screws and metal washers. Use a straight edged screwdriver or pick to prevent each of the clips from turning as of the screws are tightened..
  • Page 239 (Blender only) Lay the wire / tubing bundle from the blender along the side of the turbine manifold on top of the power board between the motor board connector standoffs and the side of the manifold. Press the O tube from the blender into the barrel connector to the oxygen transducer located on the analog board.
  • Page 240 ® Page 8-114 Series Ventilator Service Manual p/n 10665, Rev. K...

  • Page 241: Chapter 9 - Final Checkout Test

    Chapter 9 - F INAL HECKOUT This section provides a set of checkout tests that shall be performed after modifications have been made to the ventilator. Checkout worksheets are provided after the test instructions for recording the results of each checkout test. Checkout Test Selection The following matrix shows what tests shall be performed based on what parts have been replaced.

  • Page 242: General Checkout

    General Checkout Tools required: • Calibrated Manometer 0-120 cmH • Calibrated O Analyzer • Calibrated Spirometer • Compressed O source with a 0-80 PSI regulator • Compressed gas source with a 0-50 cmH O regulator (syringe and manometer may be used) •...
  • Page 243 D) The POST messages are flashed in the message window. • • SRAM • INT VECTOR • ROM CRC • EEPROM E) When the POST tests are successfully passed, ventilation begins within 20 seconds. Power down the ventilator. 4) Disconnect the ventilator from all external power sources. Power the ventilator up from the internal battery and observe the POST tests.
  • Page 244 B) Set the O % control to 22% LOW O2 PRES alarm activates C) Reset O % to 21% and clear the LOW MIN VOL alarm activates alarm. Set the Low Min Vol alarm to 10 L. D) Reset the Low Min Vol alarm to LOW PRES alarm activates 1.0 and clear the alarm.
  • Page 245 M) Clear the POWER LOST alarm. • After the ventilator is turned off, the Turn the ventilator off. Wait 15 INOP alarm sounds continuously for a seconds. duration of 15 seconds. • Vent Inop LED illuminates continuously for a duration of 15 seconds.
  • Page 246 I) Create a High Pressure alarm by Resistance ≤2.3 ohm changing the High Pressure Limit setting to 5 and measure the plug resistance. J) Return the High Pressure Limit setting to 100 and clear all alarms. K) Turn the ventilator off, leaving the Resistance ≤2.3 ohm audible alarm sounding and measure the plug resistance.
  • Page 247 Note O2 may exhaust from Air Inlet filter Port and falsely elevate reading. Do not permit exhausted O2 to enter via the fan intake. 8) Perform an internal oxygen enrichment test. Connect an oxygen sensor with a pump to a small tube inserted as described. •...

  • Page 248: General Checkout Worksheet

    General Checkout Worksheet ____________ ____________ SERIAL NUMBER: CONDUCTED BY: MEMORY BOARD SOFTWARE VER.: ____________ DATE: ____________ TEST STEP MEAS. PASS REQUIREMENT / FAIL DESCRIPTION VALUE Ventilator Checkout ("VENT CHECK") Alarm 2)A) Audible alarm tone must activate Confirming audible Chirp must activate after alarm is silenced.
  • Page 249 TEST STEP MEAS. PASS DESCRIPTION VALUE REQUIREMENT / FAIL Volume Operation Settings: 5)A) Monitors should read as follows: Volume Mode / Assist/Ctrl Vte: 383 to 633 ml Low Pres O = Off I:E Ratio: 1:3.8 to 1:4.2 BPM = 12 Tidal Volume = 500 12 bpm Inspiratory Time = 1.0...
  • Page 250 TEST STEP MEAS. PASS DESCRIPTION VALUE REQUIREMENT / FAIL Power Alarm 5)L) POWER LOST alarm activates. Return to normal ventilation mode. Disconnect AC adapter from ventilator Battery Level LED illuminates showing the charge level. Ventilator continues to operate from internal battery INOP Alarm Clear the POWER LOST alarm.
  • Page 251 TEST STEP MEAS. PASS DESCRIPTION VALUE REQUIREMENT / FAIL Burn In Set Current Date 7)A) Current Date: Date Format: Set Time to 23:15 7)B) Time is 23:15: Note Usage Meter 7)C) Note usage meter Operate ventilator on test lung for 1 Hr 7)D) No alarms occur.

  • Page 252: Power Checkout

    Power Checkout Tools required: • Internal Battery Test Cable , P/N 11472 • External Battery Test Cable, P/N 11474 • Variable 10 Amp DC voltage source 1) Perform a battery level test. With the ventilator OFF, remove external power and replace the internal battery with the variable DC voltage source, using the internal battery test cable.
  • Page 253 • B) With this charged battery, remove Battery Level LED is green upon removing external power, clear the power lost external power. alarm and allow ventilator to operate • Unit must operate continuously for a continuously, using the following minimum of 40 minutes. settings: Mode: Volume, Assist/Ctrl Breath Rate: 15...

  • Page 254: Power Checkout Worksheet

    Power Checkout Worksheet ____________ ____________ SERIAL NUMBER: CONDUCTED BY: MEMORY BOARD SOFTWARE VER.: ____________ DATE: ____________ TEST STEP MEAS. PASS / REQUIREMENT FAIL DESCRIPTION VALUE Battery Level Test Replace battery with the 10A DC 1)A) Normal operation voltage source set between 14.8V and Battery Level LED is green 15.0V and turn unit on.
  • Page 255 TEST STEP MEAS. PASS / REQUIREMENT FAIL DESCRIPTION VALUE Slowly reduce the external DC voltage 3)C) Normal operation until the external power LED shows External voltage is 11.0V ± 2% amber. Charge Status LED is lit or flashing POWER LOW and Audible alarm Slowly reduce the external DC voltage 3)D) Normal operation...

  • Page 256: Performance Checkout

    Performance Checkout Tools required: • Turbine Pressure Test Adapter , P/N 11567 • Oxygen Analyzer • 0-80 PSIG O Supply • 0-50 cmH O Air Supply • 2 L test lung (or two 1 L test lungs in parallel) • Calibrated Spirometer When doing a performance checkout, always: •...
  • Page 257 3) Perform a pressure control test. A) Set Pressure Control to 50 O and select Pressure Mode. Set the RISE TIME under the VENT OP menu as required (1 through 9, depending on test lung used), to achieve 50 cmH pressure.
  • Page 258 D) Set Leak Compensation ON • Status monitor displays “-“ (sensitivity Press the SENSITIVITY button and deactivated). rotate SET VALUE knob • Status monitor displays ALARM OP. Press and hold the SELECT button • Status monitor window displays VENT OP. Rotate the SET VALUE knob •...
  • Page 259 6) Perform a real-time transducer test. Turn the ventilator off. Turn the ventilator on while holding the Select button. Clear the REMOVE PTNT alarm, and then turn to the RT XDCR DATA menu and press Select. Turn the Set Value knob to display the required data.
  • Page 260 Worksheet. Remove the 22mm adapter from the ventilator. I) If the outlet pressure value is less than this value, troubleshoot (see Chapter 7 - Troubleshooting). For assistance, call Pulmonetic Systems technical support using the contact information at the front of this manual.
  • Page 261 8) Perform a Servo Test. Connect the ventilator to a high pressure oxygen source. Connect an oxygen sensor to the 22 mm outlet port on the right side of the ventilator (for fastest response), or to the Patient Circuit Wye. Note ®...
  • Page 262 ® B) Set the step position to 100, • For LTV 1000, 950 and 900, pressure turbine speed to 4000, and turn at High and Low flow XDCR ports must only the Purge solenoid on. O before and ≥ 14 be 0 ±...
  • Page 263 11) Perform an LTM Compatibility Test A) Set the COM setting in Extended Features to MONITOR • Display of small LTV icon appears on B) Connect the LTM serial the LTM. If the LTV icon is not communication cable to the UTT observed, or shown only intermittently, COMM PORT on the left side of then this condition constitutes a FAIL...
  • Page 264 12) Perform a Flow Valve Leak for I/E Hold (LTV® 1000 with I/E Hold Feature, only) A) Using the “three finger mode” (hold down Control Lock, Manual Breath and Select while powering on the ventilator) enter VENT MNTCE. B) Turn on SERVO mode. C) Set the step position to 0 (in the Tidal Volume window) D) Measure the flow at the OUTLET...

  • Page 265: Performance Checkout Worksheet

    Performance Checkout Worksheet SERIAL NUMBER: ____________ CONDUCTED BY: ____________ MEMORY BOARD SOFTWARE VER.: ____________ DATE: ____________ TEST STEP MEAS. PASS / REQUIREMENT FAIL DESCRIPTION VALUE Tidal Volume Settings: Volume, Assist / Control, 1)A) PEEP=5, TV=1500, BPM=6, Insp Time=6.0 sec Measured tidal volume Measured tidal volume = 1500 +/- 150ml Monitored tidal volume Displayed Vte = +/- 15% of measured tidal...
  • Page 266 TEST STEP MEAS. PASS / DESCRIPTION VALUE REQUIREMENT FAIL Sensitivity Settings: Volume, PEEP= 5, BPM=6, 4)A) TV=700, Insp Time=2.0, LEAK COMPENSATION OFF: 4)B) Hold SELECT button Status monitor displays ALARM OP Rotate SET VALUE knob Status monitor displays VENT OP Press SELECT and rotate SET VALUE Status monitor displays LEAK COMP Press SELECT and rotate SET VALUE...
  • Page 267 TEST STEP MEAS. PASS / DESCRIPTION VALUE REQUIREMENT FAIL PEEP Minimum PEEP setting 5)A) Measured PEEP must be 0 +2/-0 cmH Maximum PEEP setting 5)B) Measured PEEP must be 20 +/-3 cmH Real Time Transducer Data Airway Pressure (AP): 0 cmH O to high flow XDCR port 6)A) AP display must read 0 +/- 0.5 cmH...
  • Page 268 TEST STEP MEAS. PASS DESCRIPTION VALUE REQUIREMENT / FAIL Solenoids Step position 100, turbine speed 4000 9)A) ExhPilot solenoid deactivated (OFF): Pressure at exhalation drive port must = 0 ExhPilot solenoid activated (ON): Pressure at exhalation drive port must be ≥14 cmH Step position 100, turbine speed 4000 9)B)
  • Page 269 TEST STEP MEAS. PASS DESCRIPTION VALUE REQUIREMENT / FAIL Watchdog Test Watch Dog activated CHECK: Unit shuts downs then restarts LTM Compatibility Test – 3.13 and Higher Set COM setting to MONITOR 11)A) Display of small LTV icon appears on the Connect the LTM serial com cable to the 11)B) LTM.

  • Page 270: 24 Hour Burn-In

    24 Hour Burn-in Tools required: • 1 liter or greater test lung 1) Perform a 24 hour Burn-in test. • Connect the AC adapter to a valid AC power source. • Connect the patient circuit to the ventilator and to a test lung with a compliance of 10 ml/cmH O and a resistance of 5 cm/L/sec.

  • Page 271: 24 Hour Burn-In Worksheet

    24 Hour Burn-in Worksheet ____________ ____________ SERIAL NUMBER: CONDUCTED BY: MEMORY BOARD SOFTWARE VER.: ____________ DATE: ____________ TEST STEP MEAS. PASS / REQUIREMENT FAIL DESCRIPTION VALUE 24 Hour Burn-in Connect AC adapter and test lung. Power ventilator up. Set the ventilator controls to the factory default settings.
  • Page 272 ® Page 9-32 Series Ventilator Service Manual p/n 10665, Rev. K...
  • Page 273 Appendix A - V ENTILATOR PECIFICATIONS Modes and Breath Types Breath Types Volume Control, Pressure Control , Pressure Support , Spontaneous Modes Control, Assist/Control, SIMV, CPAP, NPPV, Apnea Backup Variable Controls Control Range Tolerance ± 2 cmH Backup Pressure Trigger -3 cmH Breath Rate “--”, 1 to 80 bpm...
  • Page 274 Variable Controls (cont.) Control Range Tolerance ± 2 cmH Pressure Control 1 to 99 cmH O or 8% whichever is greater, steady-state only Pressure Control Flow On, Off Termination Pressure Support “--”, 1 to 60 cmH ± 2 cmH O or 8% whichever is greater, steady-state only.
  • Page 275 Fixed Alarms Control Range Tolerance / Indicators Default Settings EEPROM problem detected DISC/SENSE Positive (exhaled) airway flow during first 200 ms of (Low Pressure Sense Line inspiration and exhaled tidal Disconnect) volume (Vte) of previous ® breath is more than 4000 ml (LTV 1000, 950 &...
  • Page 276 Alarms (cont.) Volume ± 5 dBA Alarm Volume 60 to 85 dBA at one meter Inop Ventilator Inop Immediately upon a Ventilator INOP condition, the audible indicator will begin sounding with a steady tone and the Vent INOP LED shall illuminate.
  • Page 277 Button Controls Display Function Control Lock Locks Front Panel controls, can be set to Easy or Hard unlocking Manual Breath Generates a machine breath Standby / On Puts ventilator in On or Standby state Low Pressure O Source Selects Low Pressure O Source Silence / Reset Silences and resets alarms...
  • Page 278 Storage and Operating Conditions Specification Tolerance Storage Temperature -20 to +60 degrees C Humidity 10% to 95% Relative, non-condensing Operating Temperature +5 to +40 degrees C Humidity 15% to 95% Relative, non-condensing Orientation The ventilator functions within its performance specifications when operated in any orientation. Inlet Air Filtration The ventilator air filter is removable and cleanable by the operator.
  • Page 279 Communications Port Connector Specification Communications RS232, DB9 connector Protocol Options: Data, Monitor , Printer, Modem Closed contact resistance: ≤ 1 ohm Patient Assist Call / RJ11-4 Remote Alarm Equipment Classification Classification The ventilator is rated as Class II equipment per IEC 601-1 Clause 6.11 Type The ventilator is specified as Type BF equipment per IEC 601-1 Clause 6.11 Power...
  • Page 280 Power (cont.) Internal Battery Feature Range Tolerance / Indicators Full Power Green LED Medium Power Amber LED Low Power Red LED Charge Time Battery shall be capable of being >90% When external power is charged within 8 hours, from fully present, and the vent is running discharged state to state indicated by at the nominal load...

  • Page 281: Appendix B - Glossary

    Appendix B - G LOSSARY EFINITION Alternating Current. The airway tubing that connects the ventilator and the patient. Airway Circuit The airway pressure measured at the exhalation valve. Airway Pressure A bar graph type display composed of 60 LEDs. This display shows the Airway Pressure real-time airway circuit pressure from –10 cmH O to 108 cmH...
  • Page 282 EFINITION Control Mode A mode of ventilation where the patient receives a fixed number of machine breaths. In Control Mode, patient triggers are not allowed. CPAP Continuous Positive Airway Pressure. A positive pressure continually applied throughout the breath cycle. A mode of ventilation where the patient triggers all breaths. Available CPAP Mode breath types are Pressure Support and Spontaneous.
  • Page 283 EFINITION See Mean Airway Pressure. Mean Airway Pressure, Mean Airway Pressure. MAP is calculated for the most recent 60 monitored ( MAP ) seconds and is updated every 10 seconds. Minimum Exhalation The minimum time required for exhalation is 250 msec. Control settings are limited to ensure the Minimum Exhalation Time is provided.
  • Page 284 EFINITION Pressure Support Breath A patient breath where the circuit pressure is elevated to a user-set pressure and maintained there until flow decreases to a user-set percentage of the peak flow achieved. Pressure Support Breaths may also be terminated by a user-set maximum time, or by exceeding 2 breath periods.
  • Page 285 Any time service is performed on the LTV Series ventilator, a Service Record form should be filled out and returned to Pulmonetic Systems. This allows for complete tracking of replacement part lots and allows Pulmonetic Systems to maintain comprehensive service history records.
  • Page 286 This page left deliberately blank ® Page C-2 Series Ventilator Service Manual p/n 10665, Rev. K...
  • Page 287 ® Appendix C Series Ventilator Service Manual p/n 10665, Rev. K Sample of Service Form 17701-001 Rev C...
  • Page 288 ® p/n 10665, Rev. K Series Ventilator Service Manual Appendix C Sample of Service Form 17701-001 Rev C...
  • Page 289 Appendix D - E VENT RACE The Event Trace is a list of events recorded by the ventilator . These events may be normal conditions, such as turning the ventilator on or off, or alarm conditions such as HW FAULT or HIGH PRES.
  • Page 290 xx:eventdate 5) Press Select and is displayed. is the chronological number of the event occurrence. eventdate is the date of the event; the date of the first occurrence is displayed in the initial occurrence recordings and the date of the latest occurrence in the secondary occurrence recordings of the same type of event.

  • Page 291: Appendix D - Event Trace

    Event Codes This section includes a list of the event codes that can be recorded in the Event Trace. Event Codes by Code # Code Event Name Event Associated Alarm VENT 1 Power on None VENT 0 Power off None HOUR MTR Set hour meter None...
  • Page 292 Code Event Name Event Associated Alarm Memory CRC check failed RESET HI PRES1 High pressure occurred HIGH PRES HI PRES0 High pressure exited HIGH PRES TBN ISTP Turbine immediate stop occurred HIGH PRES TBN ZERO Turbine set to zero flow occurred HIGH PRES TBN ESTP Turbine emergency stop occurred...
  • Page 293 Code Event Name Event Associated Alarm Reserved for future use Reserved for future use Reserved for future use Reserved for future use Reserved for future use Reserved for future use Reclaims all incorrectly recognized bad CLR BREC EEPROM records ® p/n 10665, Rev.

  • Page 294: Event Codes By Event Name

    Event Codes by Event Name Event Name Code Event Associated Alarm AD MMTCH ADC mismatch HW FAULT AD MTCH0 ADC mismatch cleared HW FAULT AD MTCH1 ADC mismatch occurred HW FAULT ADC1 VAL AD mismatch primary channel fault value HW FAULT APNEA 0 Apnea mode exited APNEA...
  • Page 295 Event Name Code Event Associated Alarm O2 HI 0 pressure high exited HIGH O2 PRES O2 HI 1 pressure high occurred HIGH O2 PRES O2 LOW 0 pressure low exited LOW O2 PRES O2 LOW 1 pressure low occurred LOW O2 PRES POST POST failure RESET...
  • Page 296 Event Name Code Event Associated Alarm Reserved for future use Reserved for future use Reserved for future use Reserved for future use Reserved for future use Reserved for future use ® Page D-8 Series Ventilator Service Manual p/n 10665, Rev. K...

  • Page 297: Event Trace Data Definitions

    Event Trace Data Definitions XDC FLT1 Four binary digits, ABCD, where A represents the Flow Differential narrow (FDn) transducer channel B represents the Flow Differential wide (FDw) transducer channel C represents the Flow Differential bi-directional (FDb) transducer channel D represents the Airway Pressure (AP) transducer 1 = fault, 0 = okay For example, 0100 represents a failed auto zero on the FDw channel.
  • Page 298 ® Page D-10 Series Ventilator Service Manual p/n 10665, Rev. K...

  • Page 299: Conversion Factors

    Appendix E - R EFERENCE NFORMATION Conversion Factors The following Reference Conversion Table provides conversion factors for converting between units. To use this table: Move across the table to find the starting unit of measure. Move down the table to reach the ending unit of measure.

  • Page 300: Extended Features Map

    Extended Features Map This Extended Features map represents the LTV 1000 with all available options. Your ventilator may have less Extended Features depending on the model and options you have purchased. ® Page E-2 Series Ventilator Service Manual p/n 10665, Rev. K...

  • Page 301: Extended Features Map (Continued

    Extended Features Map (continued) ® p/n 10665, Rev. K Series Ventilator Service Manual Page E-3...

  • Page 302: External Accessories Screw Location, Type And Length

    External Accessories Screw Location, Type and Length ® As new features and accessories are made available for the LTV Series ventilators, the number of possible ventilator configurations and modifications to ventilator configurations has also increased. Damage to internal components of the ventilator can result if the wrong length mounting screws are used when permanently (or temporarily) removing or exchanging external accessories.
  • Page 303 ® p/n 10665, Rev. K Series Ventilator Service Manual Page E-5...

  • Page 304: Input O Flow Chart

    Input O Flow Chart Use the Input O Flow Chart to determine the correct O flow for a desired Inspired Oxygen (FIO ) Concentration. To determine the required O input flow: 1) Find the desired FIO (bottom of chart). 2) Calculate the patient’s minute ventilation rate by using the following formula: Tidal volume x...
  • Page 305 To determine the delivered O concentration: Find the Input O Flow (left side of chart). Follow the Input O Flow across horizontally to the right to the applicable slanted VE (minute volume) line. Read down to the FIO (bottom of chart). ®...

  • Page 306: Parts, Replacement

    Parts, Replacement The following Replacement Parts table provides the name and part number of all parts ® potentially used in the servicing of the LTV Series ventilator. Part Replacement Part Name Number • 10773 Adhesive, Loctite 4591 • 10122 Adhesive, RTV Silicon •...
  • Page 307 Part Replacement Part Name Number • Label, Battery Replacement 10927 ® • 14392 Label, LTV Chirp • 11322 Label, Stepping Motor Connector • 10123 Lubricant, Silicone Gel ® • 11146 Mounting Block, LTM/ LTV • ® Mounting Bracket, LTM/ LTV 11125 •...
  • Page 308 Part Replacement Part Name Number • Switch, Membrane Panel 10114-1 • 10114-2 Overlay Panel English • Overlay Panel Japanese 10114-3 • 10114-4 Overlay Panel Spanish • 10114-8 Overlay Panel Portuguese ® 1000 (with I/E Hold): • 11406-1 Switch, Membrane Panel •...
  • Page 309 Part Replacement Part Name Number • 10437Y Screw, 5/8” Yellow colored Pan-head • 10433 Screw, 7/16” Pan-head • Screw, 7/8” Red colored Pan-head 10607R • 14498 Screw, 1/8” Flat-head • 10603 Seal, O Donut • Seal, Side 10881 • Soft Side, Left 10105 •...

  • Page 310: Settings, Dip Switch

    Settings, Dip Switch The following Dip Switch Settings table provides Dip Switch factory set default information. Dip Switch Default Function Setting Force all LEDs to turn on. Use in conjunction with dip switch #5. Intended for factory use only Force O pressure to 50 psi regardless of inlet pressure.

  • Page 311: Settings, Front Panel Controls And Extended Features

    Settings, Front Panel Controls and Extended Features The following tables provide factory default information. Front Panel Controls Control Default Control Default Breath Rate 12 bpm High Pres Limit 20 cmH Tidal Volume 500 ml Low Pres 5 cmH Pressure Control 1 cmH Low Minute Volume 2.5 Lpm...

  • Page 312: Tools, Required

    ® The following unique tools are required to perform various procedures on the LTV Series ventilator and are available from Pulmonetic Systems separately, or as part of the Maintenance and Calibration Kit, P/N 11566; • Tube Adapter, 22mm P/N 10570 •...

  • Page 313: Transducer Calibration, Acceptable A/D Counts

    Transducer Calibration, Acceptable A/D Counts Airway Pressure (AP) @ 50 cmH 733 – 1570 Ambient 35-350 Flow Differential Bi-Directional (FDb) @ -30 cmH 64-3240 Ambient 3180-4045 Flow Differential Wide (FDw) @ 30 cmH 854 – 4030 Ambient 10 – 400 Flow Differential Narrow (FDn) 80 +/- 70 10 - 150...

  • Page 314: Torque Values

    Torque Values ® The following Torque Values Table provides torque values used in the assembly of the LTV Series ventilator. In-oz Assy./Part to be Torqued Ref. Page Torque Value • Analog Board mounting screws (2) 8-50 & 8-101 60 in-oz (0.42 Nm) •...

  • Page 315: Appendix F - Index

    Appendix F - I NDEX 24 Hr Burn-in CAL FAIL · 6-10, 6-16, 6-18, 6-20 Worksheet · 9-31 Calibration · , 6-6 Airway Pressure · 6-7 Clearing · See Clear, Calibration Flow Differential · 6-11 Flow Valve · 6-25 Motor Drive · 6-19 A/D Counts ·...
  • Page 316 Display Test, Troubleshooting · 7-37 Front Panel · 8-66 Display, Test · 8-68, 9-2 Displays Dim or Blank · 7-4 Dovetail Mounting Bracket · 8-32 General Checkout Worksheet · 9-8 EASY · 7-5 EEPROM, Clearing · See Clear, EEPROM EMC · iii HARD ·...
  • Page 317 Pisco Connector · 8-48, 8-49 PM · See Preventative Maintenance Pneumatic Schematic · See Schematic Main Board · 8-73 Port, Solenoid Manifold #5 · 8-62 Maintenance · 6-4 Power Board · 8-92 10,000 Hour/2 Year · 5-3 Power Checkout 30,000 Hour · 5-3 Worksheet ·...
  • Page 318 9-30 VENT MTNCE · 6-4 24 Hour Burn-in · Ventilator Checkout · See VENT CHECK Alarm · 2-4, 5-2, 9-2 Ventilator Checkout Menu · 8-68 Control · 2-7, 5-2, 9-2 Ventilator Checkout Test Display · 2-5, 5-2, 9-2 Alarm · 2-4, 2-5 General Checkout ·...

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