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Fisher & Paykel MR730 manual

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Table of contents for the manual

  • Page 1

    TECHNICAL MANUAL RESPIRATORY HUMIDIFIERS MODELS: MR730 MR720 MR700 MR480 Revision F Issued March 2001 Fisher & Paykel Healthcare Ltd Auckland, New Zealand[...]

  • Page 2

    ii Ref. 185040646 *MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 National Office: Fisher & Paykel Healthcare Ltd P.O. Box 14348, Panmure Auckland, New Zealand Telephone: +64-9-574 0100 Facsimile: +64-9-574 0158 Technical Manual for Respiratory Humidifier MR730 Dual Servo MR720 Dual Servo (anaesthesia) MR700 Dual Servo MR[...]

  • Page 3

    iii Ref. 185040646 *MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 C ONTENTS P AGE 1.0 MR700 SERIES GEN ERAL SPECIFICATIONS ................................................................................ 1 1.1 Electrical Specifications ..........................................................................................[...]

  • Page 4

    iv Ref. 185040646 *MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 4.0 CIRCUIT OPERATIO N ......................................................................................................................... 9 4.1 Introduction .................................................................................................[...]

  • Page 5

    v Ref. 185040646 *MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.0 SCHEMATICS, PART LISTS AND MECHANICAL DRAWINGS ................................................ 20 8.1 MR700 Series Circuit Layout Block Diagram .................................................................................................................[...]

  • Page 6

    vi Ref. 185040646 *MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 C.1.2 High Temperature ........................................................................................................................................................... 51 C.1.3 Temperature Fluctuating .................................................[...]

  • Page 7

    1 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 1.0 MR700 S ERIES G ENERAL S PECIFICATIONS _________________________ This documentation defines the technical specifications of the MR730, MR720, MR700 and MR480 respiratory humidifiers, it also includes maintenance and repair procedures. The MR730/720 models are[...]

  • Page 8

    2 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 1.5 T EMPERATURE D ISPLAY Three digit 14mm 7 segment LED (Light Emitting Diode) display. Range 5.0 to 80.0 °C. Below 5.0 °C displays ‘Lo’. Above 80.0 °C displays ‘Hi’. Accuracy 25.0 ± 0.3 °C to 45.0 ± 0.3 °C. 1.6 G LOSSARY OF A BBREVIATIONS EOH The[...]

  • Page 9

    3 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 2.0 O PERATING C ONTROLS A ND M ODES _____________________________ 2.1 A DJUSTABLE C ONTROLS 2.1.1 A IRWAY T EMPERATURE C ONTROL Selects the airway controlling temperature. The range of adjustment is from 31 to 40 °C over a linear scale marked in degrees on the [...]

  • Page 10

    4 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 2.2.3 S TANDBY B UTTON (MR700/720/730 ONLY ) This button has to be depressed for one second to enter or exit the standby mode. When the adjacent amber LED starts to flash (100/minute) the button can then be released and the Humidifier remains in the standby mode.[...]

  • Page 11

    5 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 2 .6 W ARM U P M ODE After initial turn on, warm up mode is entered. In this mode the Low temperature alarm is disabled. The Low temperature alarm is enabled when warm up mode is exited. 2.6.1 W ARM UP MODE EXITING CONDITIONS ( LOW TEMPERATURE ALARM ENABLED ): ?[...]

  • Page 12

    6 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 3.0 A LARMS AND I NDICATORS _____________________________________ 3.1 T EMPERATURE P ROBE A LARM If the airway temperature probe is disconnected or develops a low or high resistance the Temperature Probe alarm will be enabled. Indication is by a ‘- - -' me[...]

  • Page 13

    7 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 3.2.4 C HAMBER T EMP H IGH A LARM This alarm will activate if: • The temperature of gas leaving the humidification chamber outlet is more than 4 °C higher than the chamber set temperature for more than 20 minutes. (The chamber set temperature is the sum of the[...]

  • Page 14

    8 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 Pushing the mute button mutes the audio alarm for ten minutes and restores power to the heaterplate during this time. The Airway Temp Low LED will continue to flash. This alarm is disabled during warmup. See § 2.6.2. If the airway temperature drops below 5°C th[...]

  • Page 15

    9 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 4.0 C IRCUIT O PERATION _________________________________________ 4.1 I NTRODUCTION This section describes briefly the operation of each of the circuit sections. Refer to the circuit diagrams in § 8.5 to 8.8. 4.2 C ONTROL B OARD The one basic control board, with[...]

  • Page 16

    10 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 during calibration to give the desired ramp rate. Thus all points are scanned once every 500 to 600 ms, self calibration performed, and the digital display updated. 4.2.5 P OWER L INE I NTERRUPT (R EVISIONS D/F PCB S ) A sample of the power supply frequency is d[...]

  • Page 17

    11 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 4.3 P OWER B OARD 4.3.1 R EVISION D/F PCB S A bridge rectifier (D13 to D16) supplies power to the 5 V regulator Q7 mounted on the heat sink. This circuit is protected by a 1 A fuse (F1) mounted on the circuit board. The 5 V negative supply stabilized by Q8, is d[...]

  • Page 18

    12 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 5.0 C ALIBRATION ______________________________________________ 5.1 I NTRODUCTION Calibration should be performed after any servicing involving the printed circuit boards. After calibration, perform a performance check as outlined in § 6.0. Note: For instructio[...]

  • Page 19

    13 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 1 Plug in the 41 °C calibration probe. 2 Gain access to the adjustment potentiometers VR4 a nd VR5, by removing the control board from the humidifier front panel. 3 With the Chamber Temp button held down turn on the power switch. Display should show -1- 4 Using[...]

  • Page 20

    14 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 6.0 P ERFORMANCE C HECK _______________________________________ 6.1 I NTRODUCTION This procedure should be used to check the operation and calibration of the MR730/720/700/480. This performance check should be performed after any servicing, and annually as part [...]

  • Page 21

    15 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 6.2.4 A LARMS CHECK MR700/720/730 1 Rotate Temperature Control knob to 37 and check for an Airway Temperature Low alarm. (For an MR720 set to 40 °C and check for an Airway Temperature Low alarm). 2 Rotate Temperature Control knob to 32 and check for an Airway T[...]

  • Page 22

    16 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 6.3.4 A LARMS CHECK - MR480 1 Disconnect the 34.5°C temperature probe and check that the Temperatur e Probe LED flashes and gives an audio alarm. 2 Insert the 41°C temperature probe into the humidifier and check that the Airway Temperature High LED flashes and[...]

  • Page 23

    17 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 7.0 S ERVICING I NFORMATION _____________________________________ 7.1 I NTRODUCTION This section provides information for servicing the MR730/720/700/480 Humidifier. The electronic circuitry is contained on two separate circuit boards, the power board and contro[...]

  • Page 24

    18 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 If you are fitting a Revision H or later power PCB to a Humidifier that has a revision F or earlier control PCB , you will have to ensure correct phase polarity on the transformer secondary wires. To check for correct polarity, turn the humidifier on, if the hum[...]

  • Page 25

    19 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 7.4.1 H EATERPLATES WITH SCREW - IN STANDOFFS For products after S/N:9773XXX19731, the heaterplate standoffs were changed to shoulder bolts that screwed directly into the heaterplate. When fitting these heaterplates,‘click’ the heaterplate springs into the r[...]

  • Page 26

    20 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.0 S CHEMATICS , P ART L ISTS AND M ECHANICAL D RAWINGS ________________ 8.1 MR700 S ERIES C IRCUIT L AYOUT B LOCK D IAGRAM[...]

  • Page 27

    21 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.2 C OMPONENT L AYOUT - R EVISION H AND J PCB Power Board Control Board[...]

  • Page 28

    22 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.3 C OMPONENT L AYOUT - R EVISION F PCB Power Board Control Board[...]

  • Page 29

    23 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.4 L INK P AD L OCATIONS FOR P ROGRAMMING C ONTROL O PTIONS - R EVISION H AND J PCB Control Board( viewed from solder side) Location of Link Pads for Programming Control Options (see Appendix A3) Link Pads[...]

  • Page 30

    24 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 THIS PAGE LEFT BLANK[...]

  • Page 31

    25 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.5 C IRCUIT D IAGRAMS - R EVISION H AND J PCB C ONTROL PCB[...]

  • Page 32

    26 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.6 C IRCUIT D IAGRAMS - R EVISION H AND J PCB P OWER PCB[...]

  • Page 33

    27 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.7 C IRCUIT D IAGRAMS - R EVISION F PCB C ONTROL PCB[...]

  • Page 34

    28 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.8 C IRCUIT D IAGRAMS - R EVISION F PCB P OWER PCB[...]

  • Page 35

    29 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.9 E LECTRICAL P ARTS L IST The electrical components listed below are referenced in accordance with the component layout and the circuit diagrams (see § 8.2 to 8.8). Note: The Control and Power PCB Assemblies listed below are replacement parts for Revision F [...]

  • Page 36

    30 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 R20 Resistor 412E 0.25 W 0.5% Metal Film ..................................................... 325040152 R21, R22, R23, R27, R29 Resistor 820E 0.25 W 0.5% Metal Film ..................................................... 325040136 R25, R35, R40 Resistor 100k 0.25[...]

  • Page 37

    31 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.9.2 P OWER B OARD C OMPONENTS : (R EVISION H AND LATER PCB S ) Reference Description Part Number Power PCB Assembly MR480 Complete .................................................. 043040678 Power PCB Assembly MR700/720/730 Complete ..........................[...]

  • Page 38

    32 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.10 M ECHANICAL P ARTS L IST The mechanical components listed below are referenced in accordance with the appropriate exploded diagrams following. 8.10.1 MR480 M ECHANICAL P ARTS Reference Description Part Number 1 Heaterplate Assembly 150 W 100 V .............[...]

  • Page 39

    33 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.10.2 E XPLODED D IAGRAMS : MR480[...]

  • Page 40

    34 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.10.3 MR730/720/700 M ECHANICAL P ARTS Reference Description Part Number 1 Heaterplate Assembly 150 W 100 V ................................................................................... 043040701 Heaterplate Assembly 150 W 115 V ..........................[...]

  • Page 41

    35 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 Case Body Kit MR730JEU English/French Canadian 043041335 Case Body Kit MR730JHB English/Spanish Baxter ........................................................ 043040715 NOTE: For other Case Body types Specify Model Number eg "Case Front Kit MR720ASU" [...]

  • Page 42

    36 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.10.4 E XPLODED D IAGRAMS : MR730/720/700[...]

  • Page 43

    37 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.10.5 H EATERPLATE A SSEMBLY P ARTS (MR730/720/700/480) Reference Description Part Number 1 Reflector (added after 01/01/99) ....................................................................................... 641040829 2 Screw M4 × 8 Pan Phil Taptite .....[...]

  • Page 44

    38 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.10.6 E XPLODED D IAGRAMS :H EATERPLATE A SSEMBLY MR730/720/700/480 (I NVERTED V IEW )[...]

  • Page 45

    39 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.11 PCB I DENTIFICATION D IAGRAM[...]

  • Page 46

    40 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.12 P OWER PCB H ARNESS C ONNECTION D IAGRAM[...]

  • Page 47

    41 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 9.0 P RODUCT C HANGE H ISTORY ___________________________________ This change history details changes which may have significance for servicing. It does not include changes that are insignificant to users or service technicians. Refer also to change panel on cir[...]

  • Page 48

    42 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 9.1 M ODEL N UMBER E XPLANATION eg MR730AEU (model type MR730, with specific variations as below). The table below lists variations in models that are for general sale, there are some models which are sold to specific customers that are not shown here. First Let[...]

  • Page 49

    43 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 A PPENDIX A ___________________________________________________ A1 C ALIBRATION M ODE Entry to the calibration mode is made by holding down the ‘Chamber Temp’ button and turning on the Mains Power switch. After a two second delay the display should show ‘-[...]

  • Page 50

    44 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 A2.2 E NGINEERING F UNCTIONS : N ON H EATER W IRE M ODE SET Set temperature display (°C) dc Heaterplate duty cycle (%) hP Heaterplate temperature (°C) L Programming link status CP Compare probes (Probe test) i Heaterplate Integral A2.3 I NTEGRAL D ISPLAY The i[...]

  • Page 51

    45 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 Errors EP2 to EP4 can be caused for example by abnormal high differential temperatures on the two thermistors or by rapidly changing input temperatures. EP1 Hardware fault; Q13 short not effective. EP2 Low probe temperature (~0 °C). EP3 High probe temperature ([...]

  • Page 52

    46 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 The data record as received should start with an ‘:’ and end with an ‘LF’. Under abnormal operating conditions however (when there are ‘E’ messages in the display) some or all of the above packets ‘a’ to ‘g’ can be missing. The status informa[...]

  • Page 53

    47 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 A5.4 S ERIAL D ATA I NTERFACE C ONNECTOR A DB9 connector on the side of the humidifier provides the interface connections. pin 2 Remote shut down input (Serial in). pin 3 Serial Data output. pin 5 Humidifier Earth. pin 7 +5 V (30 mA max)[...]

  • Page 54

    48 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 A PPENDIX B __________________________________________________ B1 M AINTENANCE S CHEDULE The MR700 series humidifiers operating software continually monitors the performance characteristics of the humidifier reporting any errors and in the event of a fatal error[...]

  • Page 55

    49 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 B2 M AINTENANCE S CHEDULE C HECKLIST (PHOTOCOPY AND FILE IN MAINTENANCE RECORDS) Type of service check: q monthly q 3 monthly q 6 monthly q yearly Humidifier Serial Number: ___________________________ Date: ______________ Step Method Pass Fail Monthly Check Temp[...]

  • Page 56

    50 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 A PPENDIX C __________________________________________________ C1 T ROUBLESHOOTING G UIDE F OR T HE MR700 S ERIES R ESPIRATORY H UMIDIFIERS This is a guide to possible corrective action in the case of an humidifier alarm condition or malfunction. It is primarily[...]

  • Page 57

    51 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 C.1.2 H IGH T EMPERATURE Condition detected Possible cause F Action to take Airway temperature high alarm activated. Sudden spurious increase in gas flow. Wait for temperature to fall below threshold. Heater wire too close to temperature probe. Use shorter heate[...]

  • Page 58

    52 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 Excessive water in expiratory circuit due to rainout. Condensation due to cooling in Expiratory line. Use dual heated circuit. Water ejected from humidification chamber into circuit. Humidification chamber filled beyond maximum water level line. Rduce water leve[...]

  • Page 59

    53 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 C1.7 T EMPERATURE DISPLAY Condition detected Possible cause F Action to take No temperature display, no alarm lights. Humidifier voltage rating incorrect. Select correct voltage rated unit. Heaterplate overheat protector operated. Reset overheat protector. Trans[...]

  • Page 60

    54 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 C2 MR700 S ERIES F AULT F LOW C HART F OR N O G O C ONDITION Check Voltage Rating Of Unit Open Unit and check if thermal cut out under heaterplate has tripped Reset thermal cut out and find reason for fault Check for mains voltage at Connector J5 on power board [...]

  • Page 61

    55 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 APPENDIX D _________________________________________________ D1 C LEANING OF H UMIDIFIER H EATER B ASES These are the recommended cleaners for use with Fisher and Paykel heaterbases as of the time of revision of this technical manual. The disinfectants in the li[...]

  • Page 62

    56 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 APPENDIX E _________________________________________________ E 1 A DDITIONAL D YNAMIC P ERFORMANCE C HECK OF H UMIDIFIERS This procedure is optional and may be used to check the dynamic operation of MR730/720/700 and MR480 humidifiers. This performance check can[...]

  • Page 63

    57 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 3 Connect the Heater Wire cable to the humidifier. 4 If a gas supply is used, set to 5- 10 l/minute, if no gas supply used, the breathing tube should be supported from the patient end so that it drops vertically over its entire length to the top of the chamber. [...]

  • Page 64

    58 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 E.3.2 S ETUP 1 Fill the humidification chamber with water and slide on to the heaterbase. 2 If a gas supply is used, set to 2- 10 l/minute, if no gas supply used, the breathing tube should be supported from the patient end so that it drops vertically over its en[...]