Instruction/ maintenance manual of the product MR480 Fisher & Paykel
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TECHNICAL MANUAL RESPIRATORY HUMIDIFIERS MODELS: MR730 MR720 MR700 MR480 Revision F Issued March 2001 Fisher & Paykel Healthcare Ltd Auckland, New Zealand.
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: +6.
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 .
iv Ref. 185040646 *MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 4.0 CIRCUIT OPERATIO N ......................................................................................................................... 9 4.1 Introduction .
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 ..............
vi Ref. 185040646 *MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 C.1.2 High Temperature ...........................................................................................................................................
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.
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’.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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).
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.
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.
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.
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.
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.
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.
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.
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 .
24 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 THIS PAGE LEFT BLANK.
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.
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.
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.
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.
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.
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 .
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 ..............................
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 .
33 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.10.2 E XPLODED D IAGRAMS : MR480.
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 ......................................................
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 .
36 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.10.4 E XPLODED D IAGRAMS : MR730/720/700.
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) .....................................
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 ).
39 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.11 PCB I DENTIFICATION D IAGRAM.
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.
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.
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.
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.
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.
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.
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.
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).
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 humidi.
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 monthl.
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.
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.
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.
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.
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.
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.
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.
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.
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.
An important point after buying a device Fisher & Paykel MR480 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Fisher & Paykel MR480 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Fisher & Paykel MR480 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Fisher & Paykel MR480 you will learn all the available features of the product, as well as information on its operation. The information that you get Fisher & Paykel MR480 will certainly help you make a decision on the purchase.
If you already are a holder of Fisher & Paykel MR480, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Fisher & Paykel MR480.
However, one of the most important roles played by the user manual is to help in solving problems with Fisher & Paykel MR480. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Fisher & Paykel MR480 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
