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Hoffrichter TRENDvent Service Manual

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Summary of Contents for Hoffrichter TRENDvent

  • Page 1 Service Manual Ventilator...

  • Page 2: Table Of Contents

    CONTENTS Symbols used in this service manual ................4 Safety information ......................4 Maintenance, repair and safety-related check ...............5 Maintenance ........................5 3.1.1 Maintenance schedule .....................5 Repairs ..........................6 Hygienic preparation ......................6 Safety-related check ......................6 Description of device .......................7 Housing, display and control elements ................7 Operating unit........................9 Exploded view - General layout ..................10 Exploded view - Housing upper part ................11...
  • Page 3 Functional test .......................25 Checking the acoustic alarm ...................25 Checking the alarm button light ..................25 Checking the display ......................25 Checking the status screen for errors ................25 Checking the “Battery operation” alarm ................25 Checking the leakage alarm ....................25 Checking “Frequency too high” alarm ................25 Device settings/tests .....................26 Flow sensor calibration ....................26 8.1.1...

  • Page 4: Symbols Used In This Service Manual

    MRSA (Methicillin Resistant Staphylo- coccus Aureus). In all circumstances, protective clothing must be worn, such as gloves, lab coat and face mask. Please refer to the TRENDvent hygiene concept for further information on the handling of MRSA-contaminated devices...

  • Page 5: Maintenance, Repair And Safety-Related Check

    MAINTENANCE, REPAIR AND SAFETY-RELATED CHECK All procedures performed are to be recorded. MAINTENANCE The ventilator should be serviced, in accordance with the maintenance schedule, by an authorized service agency. 3.1.1 MAINTENANCE SCHEDULE Maintenance interval Action required Page Every 6 months during Checking the battery capacity with a battery test storage Every 12 months...

  • Page 6: Repairs

    HYGIENIC PREPARATION During preparation, preparation on changing patients, as well as preparation after contamination (e.g., MRSA), the device should be treated according to the TRENDvent hygiene concept. SAFETY-RELATED CHECK The safety-related check must be carried annually, after repairs and before every recommissioning.

  • Page 7: Description Of Device

    DESCRIPTION OF DEVICE HOUSING, DISPLAY AND CONTROL ELEMENTS Display Operating unit Unlocking button for humidifier Connection for tube system/ humidifier Contact sockets Handle for humidifier Oxygen sensor cable connection (jack = 2.5 mm) Oxygen Control tube connection connection (ø = 4.5 mm) Oxygen output Pressure measuring...
  • Page 8 Check valve Tube system switch Sign for power supply Main switch Mains socket 24V~/5A Service connection Remote alarm LED (RS232 interface, Air inlet with integrated RJ11 6/4) filter cassette (fine and coarse filter), detachable Remote alarm PC connection connection (RJ10 4/4) (USB interface, Typ B) Connection cover Figure 2: Rear view of device Fine filter...

  • Page 9: Operating Unit

    OPERATING UNIT Power LED Battery LED esc button Touch wheel with 4 cursor buttons OK button Alarm button Heating button ON/OFF button Figure 4: Operating unit elements - 9 -...

  • Page 10: Exploded View - General Layout

    EXPLODED VIEW - GENERAL LAYOUT Inner frame Housing upper complete part, complete Interior wall Bellows air inlet straight Side housing part Back part assembled without handle Blower Box Air outlet with Motor cable flow element PCB, controller Control valve with cable Front panel Side housing part with handle...

  • Page 11: Exploded View - Housing Upper Part

    EXPLODED VIEW - HOUSING UPPER PART Label band Operation panel Ribbon cable operation panel Seal operation panel Display Ribbon cable display 3x Screws M2x3 Housing upper part 8x Hexagonal nuts M2.5 Figure 6: Exploded view - Housing upper part - 11 -...

  • Page 12: Exploded View - Front Panel

    EXPLODED VIEW - FRONT PANEL Control valve With cable Control valve cable Piezo signal transmitter with PCB and cable Signal transmitter cable O2 valve with cable Cable O2 sensor Front panel O2 valve cable O2 block O2 connector Figure 7: Exploded view - Front panel EXPLODED VIEW - BACK PART PCB, DC-communication Holder for filter...

  • Page 13: Exploded View - Air Outlet Unit

    EXPLODED VIEW - AIR OUTLET UNIT Proportional valve Spring Proportional with cable valve cable Air outlet without humidifier cable Seal O-ring Humidifier flow element unlock key Flow element Holder flow element Seal air-outlet Humidifier cable, Temperature assembled sensor cable Figure 9: Exploded view - Air outlet unit EXPLODED VIEW - BATTERY PACK 2x Screws 2.2x6.5 Half of casing...

  • Page 14: Cable Connecting Plan Pcb Controller

    CABLE CONNECTING PLAN PCB CONTROLLER Connection Cable humidifier Connection Cable temperature sensor Connection Connection Cable signal transmitter Cable proportional valve Connection Cable O2 valve Cable control valve Connection Cable O2 sensor Figure 11: Cable connection plan PCB Controller - 14 -...

  • Page 15: Tube Connecting Plan

    4.10 TUBE CONNECTING PLAN PCB Controller Holder E-Block 9V flow element Bellows Proportional Control air outlet valve valve View B Sinter element View A Oxygen valve Front panel blue brown green grey white black no color no color 1 incl. sinter element Figure 12: Tube connecting plan - 15 -...

  • Page 16: Important Components

    IMPORTANT COMPONENTS The TRENDvent ventilator comprises the following components: • Blower • PCB, DC-communication • Sensors / valves (compressed air distribution) • Power supply • PCB Controller (control and operating unit) • Interfaces BLOCK DIAGRAMS 5.1.1 BLOCK DIAGRAM OF COMPRESSED AIR DISTRIBUTION...

  • Page 17: Block Diagram Of Entire Device

    5.1.2 BLOCK DIAGRAM OF ENTIRE DEVICE Switching Remote alarm power supply Accessories Nurse call 100 ... 240 V AC (-20%, +10%) PCB, DC-communication Humidifier PCB Controller Blower (control and operating unit) Tube system Internal Sensors / Valves battery Oxygen supply Controls / Display Figure 14: Block diagram of entire device BLOWER The blower provides a maximum pressure of 40 hPa at a flow of 200 l/min. It is installed in a sound...

  • Page 18: Power Supply

    POWER SUPPLY The device is supplied with power via an AC/DC switching power supply or the internal battery. The device can also be provided with an external power supply using the AKKUPACK uni. Ask your spe- cialist dealer about this. PCB CONTROLLER (CONTROL- AND OPERATING UNIT) The controller PCB is the main structural element of the device.

  • Page 19: Servicing

    • Soft brush and vacuum cleaner • Soft underlay • Disposable gloves • TRENDvent power supply (art. no.: 0001 4206) and mains cable (art. no.: 3110 0023) • Airflow Pressure Meter (0-200 l/min, e.g. HOFFRICHTER APM, art. no.: 0000 4832) • Adapter for flow sensor calibration (art. no.: 0000 4946 ) • Adapter for oxygen connection, straight (art. no.: 4100 0104) •...

  • Page 20: Unpacking And Disinfecting

    R emove the filter cassette holder (D3). Place the device with the upper side on a soft surface. If the HOFFRICHTER warranty seal is still in place, remove it. Unscrew the four screws on the underside of the device using a long screwdriver (Phillips-tip PH1 x 200).

  • Page 21: Cleaning

    CLEANING Carefully clean the interior using the brush and vacuum cleaner. Clean areas that are difficult to access using compressed air. Then remove any loose particles using the vacuum cleaner. Remove any stubborn soiling from the interior and exterior of the upper and lower parts using a cloth, which has been moistened with a mild soap solution. If a humidifier is present, wash out the water container and spray-disinfect it. Treat stubborn calcification with 5 % vinegar solution.

  • Page 22: Changing The Batteries

    CHANGING THE BATTERIES The person responsible for carrying out the maintenance should decide whether, for the sake of simplicity, the entire internal battery pack with PCB should be changed. If only changing the battery pack without PCB, proceed as follows: Pull the battery pack cable (F8) from the battery charging PCB (F3).
  • Page 23 Pull the tube with the white marking off of the front panel. Lift out the inner frame (A5) and set it down, somewhat offset. Pull off the bellows (A16) from blower box (A3) and flow element holder (E5) and dispose of the cable tie. Pull the motor cable (K10) through the opening of the inner frame and remove the blower box from the inner frame.

  • Page 24: Assembling And Closing The Device

    6.10 ASSEMBLING AND CLOSING THE DEVICE Take the housing’s back part (A8) and connect the motor cable (K10) with the DC-communica- tion PCB (D1). Fit the housing’s back part (A8) into the housing’s upper part (A6). Connect the controller PCB (A9) and the back part (A8) with the DC-communication PCB and position the controller PCB into the corresponding guides in the upper part of the housing (A6).

  • Page 25: Functional Test

    “Leakage” must appear in the display. CHECKING “FREQUENCY TOO HIGH” ALARM Connect the test lung to the TRENDvent. Change to the physician mode and select PSV as the ventilation mode. Set the frequency to 12 bpm and the alarm parameter “Max. Frequency” to 20 bpm.

  • Page 26: Device Settings/Tests

    Adapter for flow sensor calibration Flow sensor Airflow resistor 7 mm Figure 15: Measurement setup flow sensor calibration 8.1.2 MANUAL FLOW SENSOR CALIBRATION C onnect the flow sensor, airflow resistor, adapter and TRENDvent (see Figure 15 on page 26). Activate the Clinic mode. Activate the Service screen using the cursor key. Select “Flow sensor calibration” using the cursor key or touch wheel. Press the OK button.

  • Page 27: Automatic Flow Sensor Calibration

    8.1.3 AUTOMATIC FLOW SENSOR CALIBRATION C onnect the flow measurement device to the TRENDvent using the RS232 connection cable (see Figure 15 on page 26). C onnect the flow sensor, airflow resistor, adapter and TRENDvent (see Figure 15 on page 26). Activate the Clinic mode. Activate the Service screen using the cursor key. Select “Flow sensor calibration > automatic” using the cursor key or touch wheel.

  • Page 28: O2 Valve Test

    O2 VALVE TEST The O2 valve test should be carried out as part of the annual maintenance or after the repair of rele- vant components. If it has been assured that the device is exclusively used without an oxygen sup- ply, the O2 test can be omitted.

  • Page 29: Battery Test

    BATTERY TEST If the maintenance of the device is carried out in the workshop, we recommend that a test of the internal batteries is carried out. Independent of this, the battery test must be carried out every 2 years , as well as after changing the single batteries (art. no. 1600 0015). The test takes max. 4 hours.

  • Page 30: Check The Electrical Safety Of The External Power Supply

    General information The TRENDvent ventilation system consists of an external SK II power supply and the ventilator, which is operated at 24 V direct current. To meet the protection class II requirements, the ventilation system has been designed with a BF application part of the DIN standards EN 60601-1-A2:1995 and EN 60601-1:2006.

  • Page 31: Maintenance Kits, Spare Part List

    10 MAINTENANCE KITS, SPARE PART LIST 10.1 MAINTENANCE KITS Use the following kits for the various replacement and maintenance cycles: Maintenance kit 1 (art. no.: 0001 4984) - Every 12 months Quantity Designation Rechargeable battery 9V Cover, check valve Coarse filter Fine filter Table 3: Maintenance kit 1 Maintenance kit 2a (art.-no.: 0001 4985) - Every 2 or 3 years...

  • Page 32: Spare Part List

    Housing lower part, complete with housing foots and rating plate 0001 4101 Cover, check valve 4210 1009 Bellows air outlet (angled) with cable tie 0001 4146 Label band “TRENDvent HOFFRICHTER” 2200 0098 Operation panel with sealings and nuts 0001 4145 Seal operation panel 179x1.4 Display...
  • Page 33 Pos. Designation Article number E6 + E9 Proportional valve with spring connectors, assembled 0001 4107 Spring for humidifier-unlock key 0.6x 4.5x 15 4100 0102 Housing for internal battery pack 4210 1006 2x screw 2.2x 6.5 DIN 7981 PCB, battery charging 0001 4330 1600 0015 Internal rechargeable battery pack (Li-Ion) - without PCB, battery changing and housing (1 set) Filter cassette, closed, with filters 0000 2058...

  • Page 34: Disposal

    11 DISPOSAL Proper disposal saves natural resources and prevents harmful substances being released into the environment. 11.1 DEVICE AND COMPONENTS The device or components must not be disposed of with the household waste. They must be dis- posed of at a communal collection point or public waste-disposal authority. 11.2 PACKAGING The packaging can be disposed with the normal household waste.

  • Page 35: Shipping Instructions

    12 SHIPPING INSTRUCTIONS 12.1 SHIPPING INSTRUCTIONS FOR CONTAMINATED MEDICAL TECHNOLOGY The following shipping instructions apply to contaminated medical technology which is delivered to HOFFRICHTER GmbH for processing. 12.1.1 PICK-UP The dealer, medical technician or authorised personnel picks up the contaminated medical technol- ogy from the patient.
  • Page 36 HOFFRICHTER GmbH Mettenheimer Straße 12 / 14 19061 Schwerin Germany Phone: +49 385 3 9925 - 0 Fax: +49 385 3 9925 - 2 5 E-Mail: info@hoffrichter.de www.hoffrichter.de TRENDvent Service ENG_2012-07-19_06...

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