Mallinckrodt Nellcor NPB-70 Service Manual

Handheld capnograph

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SERVICE MANUAL

NPB-70 Handheld Capnograph

Caution: Federal law (U.S.) restricts this device to sale by or on the order of a physician.

To contact Mallinckrodt, Inc. representative: In the United States, call 1-800-635-5267: outside the United States,

call your local Mallinckrodt representative.

Table of Contents

Troubleshooting

Summary of Contents for Mallinckrodt Nellcor NPB-70

Page 1 NPB-70 Handheld Capnograph Caution: Federal law (U.S.) restricts this device to sale by or on the order of a physician. To contact Mallinckrodt, Inc. representative: In the United States, call 1-800-635-5267: outside the United States, call your local Mallinckrodt representative.
Page 2 To obtain information about a warranty, if any, for this product, contact Mallinckrodt Technical Services or your local Mallinckrodt representative. Purchase of this instrument confers no express or implied license under any Mallinckrodt patent to use the instrument with any sensor that is not manufactured or licensed by Mallinckrodt.
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Page 5: Table Of Contents
TABLE OF CONTENTS List of Figures List of Tables Section 1: Introduction................ 1-1 Manual Overview ............... 1-1 Warnings, Cautions, and Notes ......... 1-1 1.2.1 Warning.............. 1-1 1.2.2 Caution............... 1-1 1.2.3 Note..............1-1 Product Description ............1-2 Section 2: Required Equipment ............2-1 Required Equipment ............
Page 6 Table of Contents Replacing Housing Components ........7-11 7.7.1 ON/OFF Button and Gas outlet......7-11 7.7.2 Keypads ............7-11 7.7.3 Front Cover ............7-11 7.74 Rear Cover............7-11 Updating Software Version ..........7-12 Section 8: Electrical Safety Tests ............8 -1 Electrical Safety Tests ............
Page 7 Table of Contents LIST OF FIGURES Handheld Capnograph............1-2 LCD Screen and 7-Segment Digital Display...... 1-2 Removing the Battery Pack ..........7-2 Removing Mounting Screws ..........7-3 Separating Rear and Front Covers........7-3 Replacing CO Board and Housing Components....7-4 Replacing the Pump ............
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Page 9: Section 1: Introduction
SECTION 1: INTRODUCTION Manual Overview Warnings, Cautions, and Notes Product Description MANUAL OVERVIEW This manual contains information for servicing the Handheld Capnograph (the monitor). Only qualified service personnel should service this product. The Handheld Capnograph Operator’s Manual is an integral part of the service procedures. Before servicing the monitor, read the Operator’s Manual carefully for a thorough understanding of how to operate the unit.
Page 10: Product Description
Section 1: Introduction PRODUCT DESCRIPTION The device is a Handheld Capnograph that continuously monitors end tidal carbon dioxide (EtCO ) and respiratory rate. The monitor is for attended monitoring only and must be used in the continuous presence of a qualified healthcare provider. It is intended for use in any environment where continuous, noninvasive monitoring of these parameters is desired, including hospital and mobile use (when protected from excessive moisture such as direct rainfall).
Page 11: Section 2: Required Equipment
SECTION 2: REQUIRED EQUIPMENT Required Equipment REQUIRED EQUIPMENT You will need the following equipment to disassemble, replace parts, check, adjust, or calibrate the monitor. Note: For ordering spare parts, contact your local distributor. For Disassembly and Reasssembly: • Phillips-head screwdriver (medium) •...
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Page 13: Section 3: Cleaning
SECTION 3: CLEANING Cleaning CLEANING Always clean the outer surface of the monitor before servicing. Warning: Always wear latex or surgical gloves when cleaning or servicing the Handheld Capnograph monitor after hospital use. Warning: Do not allow liquids to drip inside the housing. Warning: Do not clean internal components.
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Page 15: Section 4: Service Mode
SECTION 4: SERVICE MODE Introduction Service Level 1 Service Level 2 INTRODUCTION The monitor supports a service mode built into the instrument’s firmware. The architecture of the monitor’s service mode divides the service mode into two levels as described in the sections below. •...
Page 16: Interface Test Screen
Section 4: Service Mode Note: To exit the service mode and save event messages, turn off the monitor. Event messages will be erased when exiting the service mode by a long press of 4.2.3 Interface Test Screen The interface test screen shows four parameters (listed below) that provide tools for the user to test, adjust, and calibrate the unit’s interfacing systems.
Page 17: Accessing Service Mode And Service Level 1
Section 4: Service Mode 4.2.3.3 Contrast Cal. (calibration) The Contrast Cal. gives the service technician the option to change the middle point default value of the contrast intensity of the LCD. Table 4-1 describes how to change the contrast cal. settings. 4.2.3.4 Calib.
Page 18: Accessing Service Mode And Changing Parameter
Section 4: Service Mode Table 4-1: Accessing Service Mode and Changing Parameter Settings (Continued) To move to the next short press parameter (moving to the next parameter accepts and saves changed values) To change Contrast short press Cal. setting to set To start Contrast Cal.
Page 19: Service Level 2
Section 4: Service Mode SERVICE LEVEL 2 The Service Level 2 gives the service technician tools on three service screens: • Default Alarm Limits • Default Settings • Flow Calibration To access this service level, the service technician must enter a valid password (1627), refer to Table 4-2.
Page 20: Accessing Service Level 2
Section 4: Service Mode Table 4-2: Accessing Service Level 2 (Continued) Objective Action Response To access the Alarm short press Limits Menu after entering last password digit In case you entered a wrong digit To restart password long press validation process To reset and return to long press measuring mode...
Page 21: Default Alarm Limits
Section 4: Service Mode 4.3.1 Default Alarm Limits The service technician can change the default alarm limits for either patient mode (Adult or Neonatal). The monitor has the following alarms with adjustable level settings: • EtCO high and low levels (mmHg) •...
Page 22: Default Settings
Section 4: Service Mode 4.3.2 Default Settings The service technician can change two default settings (refer to Table 4-4): • 3 Min Alert • BTPS (body temperature, pressure, saturation) When the 3 min Alert is ON, the unit will beep every three minutes to remind the user that an alarm (or all alarms) are set to OFF.
Page 23: Flow Calibration
Section 4: Service Mode 4.3.3 Flow Calibration The Flow Calibration screen allows the service technician to perform flow calibration after flow adjustment and/or pump or flow system replacement, refer to Table 4-5. Table 4-5: Accessing Flow Calibration Objective Action Response To access the Flow At any screen after Calibration screen...
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Page 25: Section 5: Troubleshooting
SECTION 5: TROUBLESHOOTING Introduction Who Should Perform Repairs Repair Level Supported How to Use This Section Obtaining Replacement Parts Troubleshooting Guide INTRODUCTION This section provides information for troubleshooting for the monitor isolating a failure of the monitor. WHO SHOULD PERFORM REPAIRS Only qualified service personnel should remove and replace components of the monitor.
Page 26: Troubleshooting Guide
Section 5: Troubleshooting TROUBLESHOOTING GUIDE If you encounter a problem that cannot be resolved through a visual inspection, refer to Table 5-1 which provides a list of symptoms, probable causes, and recommended actions to correct the problem. It is recommended that corrective actions be performed in the order presented. For a symptom that is not listed in Table 5-1, contact your local distributor.
Page 27 Section 5: Troubleshooting Table 5-1: Troubleshooting Guide (Continued) Symptom Probable Cause Corrective Action The unit does not The wall socket is not Check the wall socket turn on when the receiving power or is for power supply or ON/OFF button defective.
Page 28: Advisory Message
Section 5: Troubleshooting Table 5-1: Troubleshooting Guide (Continued) Symptom Probable Cause Corrective Action 7-Segment The Power Refer to the Handheld Display does not Management option is Capnograph light when the set at LOW . Operator’s manual to unit is change the Power functioning.
Page 29: Flow System
Section 5: Troubleshooting Table 5-3: Event Messages Event Message Probable Cause Corrective Action - Component Failed board - Replace CO board Flow - Loose connections - Inspect all tubing ends for loose connections and ensure tight connections - Kinks or twists in - Straighten kinks tubing and undo any twists...
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Page 31: Section 6: Flow Calibration Check
SECTION 6: FLOW CALIBRATION CHECK Introduction Flow Rate Check Flow Calibration Process INTRODUCTION Perform a Flow Calibration Check after replacing the Flow System and/or Pump. Flow Calibration Check includes Flow Rate Check and Flow Calibration Process. FLOW RATE CHECK To perform the Flow Rate Check, follow the steps below: Connect the FilterLine to the Handheld Capnograph.
Page 32: Flow Calibration Process
Section 6: Flow Calibration Check FLOW CALIBRATION PROCESS To perform the Flow Calibration Process, refer to Table 6-1. Table 6-1: Flow Calibration Objective Action Response To access Flow Simultaneously Calibration screen long press To select Flow Cal. short press To start Calibration short press short press Wait until either a Fail or Pass message is displayed...
Page 33 Section 6: Flow Calibration Check Table 6-1: Flow Calibration(Continued) Objective Action Response To reset and return to long press measuring mode To exit service mode Turn off the and save event monitor messages...
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Page 35: Section 7: Disassembly Guide
SECTION 7: DISASSEMBLY GUIDE Introduction Opening the Handheld Capnograph Case Replacing the CO Board Replacing the Pump Assembly Replacing the Flowing System Replacing the LCD and 7-Segment Display Replacing the Housing Components Updating the Software Version INTRODUCTION The monitor can be disassembled and the following components can be replaced: •...
Page 36: Opening The Handheld Capnograph Case
Section 7: Disassembly Guide OPENING THE HANDHELD CAPNOGRAPH CASE Be sure the monitor is disconnected from mains power and remove the battery pack from the monitor; push the release button at the bottom of the monitor and pull out the battery pack as shown in Figure 7-1.
Page 37: Removing Mounting Screws
Section 7: Disassembly Guide Place the monitor on a clean, dry nonabrasive surface with the back of the monitor facing up. Remove the two bottom and two back mounting screws from the rear panel of the monitor as shown in Figure 7-2. Figure 7-2: Removing Mounting Screws Carefully lift the rear case cover up as shown in Figure 7-3.
Page 38: Replacing The Co Board
Section 7: Disassembly Guide REPLACING THE CO BOARD Open the monitor case as described in Section 7.2. Remove the two CO board mounting screws. Remove the CO connector screw from the CO input connector. Remove the ON-OFF button and save for reassembly. Remove the gas outlet from the tubing and save for reassembly.
Page 39: Replacing The Pump
Section 7: Disassembly Guide REPLACING THE PUMP (REFER TO FIGURE 7-5) Open the monitor case described in Section 7.2. Remove the damping cover from the pump. Locate the two tubings, Main line and Exhaust line, connected to the pump, refer to Figure 7-6. Locate the purple Main line restrictor and the green Exhaust line restrictor.
Page 40: Replacing The Flow System
Section 7: Disassembly Guide REPLACING THE FLOW SYSTEM Open the monitor case as described in Section 7.2. The Flow System has 5 lines, refer to Figure 7-6. Two lines go from the pump: • Main line • Exhaust line Three lines go from the solenoid : •...
Page 41: Replacing The Lines To The Pump
Section 7: Disassembly Guide 7.5.1 Replacing the lines to the pump 7.5.1.1 Replacing the Main line (Refer to Figure 7-7) Locate the purple restrictor. Carefully disconnect the main line from the tubing connected to the pump, leaving the purple restrictor in the main line.
Page 42: Replacing The Lines To The Solenoid
Section 7: Disassembly Guide 7.5.2 Replacing the lines to the solenoid (Refer to Figure 7-9) 7.5.2.1 Removing lines to the solenoid Carefully disconnect the Zero line from the solenoid. Warning: The scrubber on the Zero line is a lithium based compound.
Page 43 Section 7: Disassembly Guide 7.5.2.2 Reassembly of the new solenoid lines. Attach the new Input line1 to the upper solenoid connector. Locate the lower solenoid connector which is closest to the sensor and attach the new Input line 2 to this connector. Bring the Input line 2 tubing over Input line 1, and attach to the sensor connector.
Page 44: Replacing Lcd And 7-Segment Display
Section 7: Disassembly Guide REPLACING LCD AND 7-SEGMENT DISPLAY (REFER TO FIGURE 7-11) 7.6.1 Replacing the LCD Remove the CO board as described in 7.3. Unscrew and remove the four LCD mounting screws. Carefully remove the LCD and replace with a new LCD. 7.6.2 Replacing the 7-Segment Display Remove the CO...
Page 45: Replacing Housing Components
Section 7: Disassembly Guide REPLACING HOUSING COMPONENTS The Housing kit includes the following replaceable components: • Front cover • Rear cover • ON/OFF switch • Upper Keypad (Alarm silence button and Contrast/Value change button) • Lower Keypad (Print/Home button and Next/Menu button) •...
Page 46: Updating Software Version
Section 7: Disassembly Guide UPDATING SOFTWARE VERSION Caution: Observe ESD (electrostatic discharge) precautions when disassembling and reassembling the monitor and when handling any of the components of the monitor. Open the monitor as described in Section 7.2. Remove the EPROM from its socket (on the CO board) using an IC extractor, refer to Figure 7-12.
Page 47: Section 8: Electrical Safety Tests
SECTION 8: ELECTRICAL SAFETY TESTS Electrical Safety Tests ELECTRICAL SAFETY TESTS Do not return the monitor to the user until the conditions in the following “Warning” statement are met. Warning: After servicing the monitor, always verify product performance per the procedures in Section 10: Performance Verification and perform any safety tests required by local regulatory bodies or mandated by your institution.
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Page 49: Section 9: Periodic Maintenance
SECTION 9: PERIODIC MAINTENANCE Periodic Maintenance PERIODIC MAINTENANCE Periodic maintenance is recommended according to operating hours (refer to section 4.2 "Service Level 1"): The Pump and Flow System should be replaced every 7,000 operating hours. For replacing the pump, refer to section 7.5 "Replacing the Pump". For replacing the flow system, refer to section 7.6 "Replacing the Flow System".
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Page 51: Section 10: Performance Verification
SECTION 10: PERFORMANCE VERIFICATION 10.1 Flow System Leak Check 10.2 Performance Verification Procedure The performance of the monitor must be verified after all service procedures. Perform all procedures in this section to verify the correct functioning of the monitor. 10.1 FLOW SYSTEM LEAK CHECK Perform the Flow System Leak Check after all service procedures described in this manual.
Page 52: Performance Verification Procedure
Section 10: Performance Verification If the reading drops more than 20 mBar, there is a leak in the flow system. • Open the unit. • Check for loose fittings and if any are found, reconnect them. • Repeat the above process (steps 1-7). •...
Page 53: Quick Guide
Section 10: Performance Verification Verify that all buttons on the unit work properly. Refer to the Quick Guide for their applications, see Figure 10-4. Long Press Short Press Power On Changes Displays / Accesses Selects Parameters Menus Home / Event Mark Erase Trend Changes Quick Scroll...
Page 54 Section 10: Performance Verification Table 10-1: CO Calibration Check (Continued) Objective Action Result Start Check short press Cal. An Autozero process automatically occurs. Autozero is 1. Wait 20 PLQ complete; minutes to “Connect Gas” reach steady is displayed. state of temperature.
Page 55: Calibration Process
Section 10: Performance Verification Calibration Process If calibration is required, perform the Calibration Process (after performing Calibration Check) as shown in Table 10-2 Note: The manufacturer recommends using calibration gas, 5% CO air. Table 10-2: Calibration Process Objective Action Result To start No action PLQ...
Page 56 Section 10: Performance Verification Table 10-2: Calibration Process (Continued) Objective Action Result To reset and long press return to measuring mode To exit service Turn off the mode and save monitor. event messages Calibration Errors Table 10-3 describes calibration problems that can occur, the message displayed and the corrective action.
Page 57: Connecting The Monitor To Printer/Pc With
Section 10: Performance Verification To verify printing functions: Adjust the printer to the following communication settings: Input Serial Data Length 8 bits Parity Settings None Baud 9600 bps Using the Communication Adapter Kit, connect the printer to the monitor, refer to Figure: 10-5. Figure 10-5: Connecting the monitor to Printer/PC with Communication Adapter Kit Turn the printer ON and select on-line mode.
Page 58: Accessing Handheld Capnograph Print Functions
Section 10: Performance Verification Access the monitor print functions as described in Table 10-4 below: Table 10-4: Accessing Handheld Capnograph Print Functions Objective Action Result To access the long press (x2) Instrument Setup menu (first access the Alarm Limits menu from any measuring display) To select Print short press (x2)
Page 59: Section 11: Packing For Shipment
SECTION 11: PACKING FOR SHIPMENT 11.1 General Instructions 11.2 Packing Handheld Capnograph in Original Carton 11.3 Packing in a Different Carton 11.1 GENERAL INSTRUCTIONS To ship a monitor or one of its components for any reason, follow the instructions in this section. Failure to follow the instructions in this section may result in loss or damage not covered by any applicable manufacturer warranty.
Page 60 Section 11: Packing For Shipment Place the bagged monitor or component on the layer of packing material and fill the box completely with packing material such that there is at least 2 inches of packing material around all sides of the item. Seal the carton with packing tape.
Page 61: Section 12: Specifications
SECTION 12: SPECIFICATIONS 12.1 Physical 12.2 Environmental 12.3 Safety Standards 12.4 Performance 12.5 Power Specifications 12.6 Components and User Interface 12.1 PHYSICAL 12.1.1 Size 206 mm H x 88 mm W x 53 mm D (8.11”H x 3.46” W x 2.06”D) 12.1.2 Weight (including battery pack) 750 grams (1.66 lb.) 12.1.3 Noise Emission...
Page 62: Performance
Section 12: Specifications 12.4 PERFORMANCE Sampling Rate 50 ±7.5 ml/min 0-99 mmHg (0-13.2 kPa and 0-13.0 Vol%) at sea Range level Accuracy EtCO readings The CO reading reaches its steady state accuracy 20 minutes after power up. 0 - 38 mmHg: (±2 mmHg) 39 - 76 mmHg: (±5% of reading)
Page 63: Power Specifications
Section 12: Specifications 12.5 POWER SPECIFICATIONS 12.5.1 External Power Source 12V DC Medical Grade Adapter 12.5.2 Internal Power Source Ni-MH Rechargeable Battery Pack 7.2V 2.1 A/h (intended for continuous operation) Between 3 and 6 hours, depending on power Operating Time management.These values reflect the performance (fully charged) of a new battery;...
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Page 65: Section 13: Spare Parts
SECTION 13: SPARE PARTS 13.1 Spare Parts List 13.1 SPARE PARTS LIST Spare parts are shown below in Table 13-1. For spare part numbers contact your local distributor. Table 13-1: Spare Parts List Item Description board - includes electronic board, sensor, pump and scrubber, solenoid, LCD, 7-segment display, flow system, CO input connector, software EPROM and...
Page 66: Glossary Of Terms
GLOSSARY OF TERMS BIT: Built in Tests. BTPS: Body Temperature, Pressure and Saturation Compensation. Where Body Temperature is assumed 37°C with vapor pressure 47mmHg The Calculations are made according to: x (Pb - 47) Where: is the Fractional concentration of CO Dry gas, F = % CO /100...