Service Manual - Hoffrichter GmbH
Contents
1. Disconnect the plug connection and the pressure measuring connection 7 Carefully remove the heating cable using aids if necessary 8 SERVICING HARDWARE 8 1 CLEANING Clean the inside of the device carefully using the brush and the Service vacuum cleaner Remove heavy soiling using a damp cloth Perform spray disinfection on all components acting as air ducting A SS If a humidifier is present wash out the water container and perform spray disinfection on it Apply a 5 solution of vinegar to stubborn limescale 8 2 FILTER Replace the filter with a new one When using the optional filter system fi tersystempoint replace the filter inserts 8 3 CHECKING HEATING CABLE 1 Check that the heating cable is still intact insulation and that the plug connections are not bent 2 The heating cable should be protected from tension compression and clamping 8 4 CHECKING PLUG CONNECTIONS Check all plug connections on the controller circuit board for secure positioning and where neces sary correct deficiencies NOTICE The device is energized during the following operations 8 5 CHECKING FUNCTION OF DISPLAY 1 Connect the device to the power supply 2 Check whether all characters are shown completely and correctly in the display 8 6 CHECKING DISPLAY CONTRAST 1 Press any key The display lights up with a brightness of 100 2 The background of the display is illuminated The display should be clearly legible in2. daylight 3 After 15 seconds the display fades to 50 of the brightness level 4 The display should now be faint yet still clearly legible 5 If required the display contrast can be adjusted with P5 see Figure 4 on page 6 8 7 CHECKING KEY FUNCTIONS 1 Check that the turbine switches on and off properly when the ON OFF key is pressed 2 Check whether the menu can be operated properly using the arrow keys 8 8 CHECKING FOR SECURE ATTACHMENT OF CONTROLLER CIRCUIT BOARD Check whether the controller circuit board is properly secured and in the correct position 9 CLOSING THE DEVICE Unplug the mains plug 2 Position the motor cable in the space between the motor and the wall of the housing and run the heating cable between the box and the wall of the housing 3 Position the pressure measuring tube above the controller circuit board and connect it to the pressure sensor 4 Carefully fit the upper case of the housing making sure that no cables or tubes are com pressed or crushed 5 Place the device upright again and screw the upper and lower casing together Then reattach the housing feet 6 Ifthe point was set up for the connection of a humidifier install the controls and the control electronics of the humidifier 7 Insert the filter or fit the fi tersystempoint filter system optional 10 CHECKING ELECTRICAL SAFETY The point basic device is equipped with protective insulation and does not have any exposed elec
3. system requirements MS Windows 98 2000 NT4 0 ME XP Server 2003 Vista or 7 AMD Athlon Pentium class x86 clock frequency 700 MHz min 192 MB system memory for MS Windows 98 NT4 0 ME min 400 MB system memory for MS Windows 2000 XP Server 2003 Vista min 150 MB free hard drive space or more depending on the required storage capacity for patient files min 280 MB free hard drive space for the Microsoft NET Framework 2 0 Redistributable x86 2 MB graphics card min High Color 16 bit Mouse 1 free COM interface per device 1 free SD interface only when using DATA box e HOFFRICHTER TRENDset PC software e Spray disinfectant e g Mikrozid Liquid 7 OPENING THE DEVICE ACAUTION To protect against germs the surface of the device and where present the humidifier must be treated with a disinfectant immediately after unpacking 1 2 3 4 5 6 Unplug the mains plug Remove the filter or the filter system fi tersystempoint optional Remove the humidifier where present Remove the two batteries powerpackpoint where present Place the device top down on a soft base Open the device as follows a Remove the feet of the housing b If the point is set up for the connection of a humidifier remove the control electronics of the humidifier and disconnect the plug connection c Release the four screws at the housing d Dismantle the upper casing of the housing
4. use of the device 2 SAFETY INFORMATION Before starting maintenance read this service manual through carefully There is a risk of short circuiting due to the capacitors present in the device including when de energized When servicing is performed at the patient s home the patient should be warned of the risk Repair and maintenance may only be carried out by qualified authorized and competent specialist personnel This manual refers solely to the point respiratory therapy device It does not deal with accessories such as therapy tubing and masks If an accessory is suspected of being defective it should be visually inspected by the service technician and the result recorded in the servicing report For hygiene reasons we recommend wearing disposable gloves whenever work ing on the device Before further work the device must be subjected to wipe disinfection with a standard disinfectant solution When new goods are received by the Service department the documents sup plied with the device must be checked Devices contaminated are prepared according to the point hygiene concept 3 PREPARATION OF DEVICES WHEN CHANGING PATIENT The hygienic preparation of a device during a patient change can be carried out using a mechanical procedure based on the hygiene concept The type and scale of the preparation are described in detail in this concept The number of preparation cycles is not limited 4 DESCRIPTION OF DEVICE 4
5. 1 HOUSING DISPLAY AND CONTROL ELEMENTS Sealing ring Keyboard and display Locking mechanism for humidifier Therapy tube connection aqua point Contact sockets for humidifier Controls for humidifier Figure 1 Front view of device Pressure balance aperture grid covered 24 V DC connection luse only with the provided power supply po CPAP TT senza UN 310560 au AZ CHC P RS232 Rating plate interface Filter or connection port for the filtersystempoint Figure 2 Rear view of device Display ON OFF key HOFFRICHTER Programing keys Enter key Figure 3 Keyboard and display 1 optional equipment version 4 2 CONTROLLER CIRCUIT BOARD V3 0 DC Input Serial interface Battery contact teceets UEEL AGENT P5 aA an _ x CPU ATmega2561 Quartz Alarm CPU generator Display i Plug connection for IC clock membrane keyboard Plug connection for humidifier electronics Figure 4 Controller solder side IMPORTANT The controller circuit boards V2 0 and V 3 0 are functionally identical Only the mounting architecture and the plug connector for the humidifier electronics are different constructed IC RS232 Serial interface 24 V DC input Motor control connection Battery contact e08090994583953988 o o Battery contact Pressure sensor on PC24 board Il Backu
6. HOFFRICHTER Quality makes the Difference E E m m Service Manual CPAP Respiratory Therapy Device from serial number J10B5432 to J10E106064 CONTENTS N ODO oO AARON hou 8 2 8 3 8 4 8 5 8 6 Sal 8 8 10 11 11 1 11 2 12 13 14 14 1 14 2 14 3 Symbols in service MANGA vacinnoneitcisose nie 3 Safety IOMA Nadia ile id 3 Preparation of devices when Changing patient oococcccccccconinnnnannnnnnccrcrnnnonnanannnnnncennnn 4 DESCHPUON OM dev iii drid 5 Housing display and Control elements ooooooicccnccoccccnnnnnconncnnnnnconnnnnnnnnnnnnnnnnncnncnnnnnnrncnnnnnno 5 Controller circuit board V O aoa onen anan a aa awed 6 Technical Explanations cccccccceceeceeeeee cae eeeeeaaeeeeeeeeaeaaeeeeeesaaeeeeeesaaeeeeeeaaeeeeesaaaeeeeesaaaes 8 Tools and measuring EQUIPMENT asseris i a EA 10 Opening the ev scada a atessdasdaiguag wens syasyudiadiqenduntealonas tind sxmnaned 10 Servicing hardware E 11 ICANN G ON E 11 A 11 Checking heating Cable wisi cssctssisnecedsadvensdadazbietecaden dad daban bd sane NE E denny E O TETAN 11 Checking plug CONNEC tIONS occccccconnncnncconononnnnnononnnnnnnnnoncnnnnoncrnnnnnnnncrnnnnnnnnrnnnnnnnnncnnnnnnns 11 Checking function Of display oooocccccconnccncccnnnccnnnnonononcncnnoncccnnnnnonernnnnnnnnrcnnnnnnnncninnnnns 11 Checking display CONtraSt oooocccconnnccnnccnnoconnncnnocnnnnnnnnnoncnnononccrnnnnnonernnnnnnnnrrnnnnnnnncnnnnnnns 11 CHECKING Key TUNCUIONS aic
7. aimosrcorimando c nica alcala naa copien EAEE EE ERE R end calza eae 11 Checking for secure attachment of controller circuit board ccccoccccccnccnnnnncnnnonnnnnnnnnnnnons 11 Closing th dsc AA A A 12 Checking elsotrical satety sia ias 12 Servicing SOWAS sandia ibid 12 Validation OF Set iii a 12 Service and analysis i n 12 Final SteDS cccceeeecceeeeeeeeeeeee eects nn esses saad eeeesaaaeeeeeesageeeeesaaeeeeessaaeeeeeesae 13 Spars parias E aucnaadeberemeruioninns 14 Disposal aiii dd aa aa A A AA dente aE aaa 15 DOVICO enara E feo di lesion dict E ande feanesacaerssbianate sas 15 Pack caderas diosa cain csp ciedad dr calido dihbesg siqeaeniaa can E R tes 15 Bates mida da die 15 1 SYMBOLS IN SERVICE MANUAL Important information is denoted by symbols in this service manual Be sure to follow these instruc tions in order to avoid accidents personal injury and material damage In addition the local accident prevention regulations and general safety regulations in force in the area of use must be observed A This symbol denotes general safety instructions Follow these instructions to avoid accidents personal injury or material damage A CAUTION This symbol denotes hazardous situations that may lead to moderately severe injuries NOTICE This symbol denotes situations that may lead to material damage or damage to the device IMPORTANT This symbol denotes information tips and instructions for the effi cient error free
8. eed 0 5 hPa If the maximum deviation is exceeded send the device in to your distributor for checking 13 Close the ADU Test window 12 FINAL STEPS After finishing servicing draw up a final report and affix a test seal showing the date and tester s ini tials to a suitable position on the device 13 SPARE PARTS LIST Device Power supply unit 2 pin 0000 2020 Power supply cable 31100015 Carrier bag 0000 2111 Standard coarse filter 45 x 25 x 7mm 0000 2110 Therapy tube without measuring tube 0000 7875 Plastic ring air outlet 42100714 Blower 4100 0109 Controller circuit board without heating cable 00005412 Display 15200012 Heating cable assembled SN J10B5432 J10C5769 or higher Controller V2 0 0000 5239 Heating cable assembled J10C5770 or higher Controller V3 0 and V8 0 0000 5238 Battery CR2032 1600 0011 Ceramic microfuse 2 5 A 2400 0020 Battery contact for powerpackpoint battery pack 0000 2230 Upper casing 0000 5666 Plastic foil keyboard 2200 0096 Air outlet 42100728 Bellow air outlet 42100713 Cover instead of control electronic aquapoint 42100708 Clamp meander 42100715 Noise absorber 42100711 Blind DC input PC interface 42100724 Blind DC input PC interface 42100720 Foot for housing 42100719 Tab 1 Spare parts list for device Humidifier aquapoint humidifier incl control electronic locking mechanism and sealing ring 0000 7949 Control electronic for aquapoint humidifier 0000 4286 Locking mechanism for aq
9. p battery for internal clock Figure 5 Controller component side 5 TECHNICAL EXPLANATIONS Figure 6 Block diagram Heating optional when humidifier is connected The humidifier heating consists of a heating element in the electronic unit of the humidifier The heating capacity can be set to 5 different heating levels using the controls The maximum temperature of the heating plate is limited to 60 C In addition there is a thermal fuse in the electronic unit of the humidifier which trips at a temperature of 135 C in the event of a fault Power supply Patient ss ed H fi i Respiratory lt sae ler a optional mask he ee eee ae Slower v box gt Load p management Rower Y Pressure PI controller Sensor Motor A D A gt converter f4 x Motor controller gt CPU Display iq Flash external RaM EA EEPROM EEPROM ADC Keyboard gt RS232 DC power supply unit lt 4 AC mains RCI Battery The device is operated via an external switched mode power supply with a wide input range of 100 240 VAC and a frequency of 50 60 Hz No maintenance or repairs should be performed on the switched mode power supply Motor control A piezoelectric sensor differential pressure measuring procedure measuring range O 3500 Pa continuously measu
10. res the actual output pressure The setpoint pressure value is output by the computer The difference between these two values is corrected by the PI controller and the motor control Switching controllers are used to minimize power losses Motor DC motor operating voltage 4 24 V electronically commutated Adjustment range 7 0 17 5VDC point processor ATmega2561 The Almega 2561 processor is a microcontroller which is used in all point devices The key techni cal data include e 256 Kbyte flash memory e 4 Kbyte EEPROM memory e 8 Kbyte RAM e programmable interface e an integrated A D converter 10 bit e 54 programmable I O pins Clock The point has a real time clock The real time clock is supplied by an internal battery CR2032 which offers an operating time of 8 to 10 years Alarm Output of an acoustic alarm for wake up function as well as in the case of absent or excessive mask pressure 6 TOOLS AND MEASURING EQUIPMENT The following equipment is required for servicing e Service manual and maintenance documents e Battery pack powerpackpoint or point power supply unit e Screwdriver Phillips and slotted in various sizes e Soft brush and Service vacuum cleaner e Soft base e Auxiliary tool art no 00007939 e Therapy tube e Flow resistor art no 00007303 e RS232 adapter cable Sub D9 RJ45 art no 00005232 e Device for testing electrical safety e g SECUTEST SIII DIN EN 62353 2008 e PC with following
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12. trically conductive parts at the housing As such electrical safety testing of the device is not included Electrical safety testing is only possible on the power supply unit and is performed by a device safety tester e g SECUTEST SIII which complies with the DIN EN 62353 2008 standard The ref erence point is the ground conductor on the secondary side of the power supply unit external con tact 11 SERVICING SOFTWARE 11 1 VALIDATION OF SETTINGS Connect the device to the PC using the adapter cable art no 00005232 Insert the power supply unit and connect it to the device Start the TRENDset PC software Compare the settings with the medical prescription the patient ID card etc ap on Ss Correct the values if necessary 11 2 SERVICE AND ANALYSIS Connect the therapy tube Insert the flow resistor art no 00007303 into the other end of the therapy tube oO gt Disable the softstart ramp and the mask test in the complete menu of the device or using TRENDset Log in to TRENDset under Settings Service Log in Enter service as the Username Enter user140372 as the Password Select the view Times and Counters Set the Service counter to the next maintenance interval Correct the date and time if necessary O Select the menu item ADU Test ao SE 11 Start measurement 12 The entire pressure range is now checked for pressure deviations The maximum deviation must not exc
13. uapoint 0000 2361 Sealing ring air outlet for aquapoint 42100727 Water container with heating plate 0000 4283 Closing cap 42100701 Air guide 42100703 Tab 2 Spare parts list for humidifier Battery pack powerpackpoint battery pack 2 pcs 0000 7846 Tab 3 Spare parts list for battery pack Filter system Filter system filtersystempoint with coarse and fine filter ready for use 0000 7847 Filter cassette for filter system filtersystempoint without filter 42100729 Fine filter for filter system filtersystempoint 00002109 Coarse filter for filter system filtersystempoint 0000 2108 Tab 4 Spare Parts List for Filter System 14 DISPOSAL Proper disposal saves natural resources and prevents harmful substances being released into the environment 14 1 DEVICE The device must not be disposed of with the household waste Please contact the manufacturer to find out how to dispose of the device etc properly 14 2 PACKAGING The packaging is taken back by the manufacturer but it can alternatively be disposed of separately with the normal household waste 14 3 BATTERIES Exchanged batteries must be recycled in accordance with battery regulations Please contact the manufacturer to find out how to dispose of the batteries properly HOFFRICHTER GmbH Mettenheimer StraBe 12 14 C Eo 23 19061 Schwerin Germany Telefon 49 385 39925 0 Telefax 49 385 39925 25 E Mail info hoffrichter de www hoffrichter de point 2 0 3 0 se
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