Page 2 - Section
ii Ref. 185040646 *MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 National Office: Fisher & Paykel Healthcare LtdP.O. Box 14348, PanmureAuckland, New Zealand Telephone: +64-9-574 0100 Facsimile: +64-9-574 0158 Technical Manual for Respiratory Humidifier MR730 Dual ServoMR720...
Page 3 - ONTENTS
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 7 - ERIES
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 respiratoryhumidifiers, it also includes maintenance ...
Page 8 - EMPERATURE
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 ...
Page 9 - PERATING; DJUSTABLE; MR700 Series Humidifiers with Version 1.0 Software:
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 °...
Page 11 - ARM; Warm Up mode continues until the Software Detects-; The airway temperature gets above 30 °C.
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 isenabled when warm up mode is exited. 2.6.1 W ARM UP MODE EXITING C...
Page 12 - LARMS AND
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 ...
Page 13 - This alarm will activate if:; For Chamber Set Temperature < 35 °C; 1 °C or higher. Power to the heaterplate is immediately shut off.
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 settemperature for more than 20 minutes. (T...
Page 15 - IRCUIT; NTRODUCTION
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 ...
Page 16 - H PCB
1 0 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 calibrationperformed, and the digital display updated. 4.2.5 P OWER L INE I NTERRUPT (R EVISIONS D/F PCB...
Page 17 - EVISION; H AND J PCB
1 1 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 protectedby a 1 A fuse (F1) mounted on the circuit board...
Page 18 - ALIBRATION; For models with Revision D PCB and earlier:; D PCB; Plug in the 41 °C calibration probe.; F PCB
1 2 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 aperformance c...
Page 20 - ERFORMANCE
1 4 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 performancecheck should be perf...
Page 21 - Full
1 5 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 to40 °C and check for an Airway Temperature Low alarm). 2 Rotate Temperatu...
Page 22 - LARMS CHECK; UAL; QUIPMENT
1 6 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 Temperature Probe LED flashes and gives anaudio alarm. 2 Insert the 41°C temperature probe into the humidifier and check tha...
Page 23 - ERVICING; ONTROL; OWER; PCB; COMPATABILITY; ARDWARE COMPATABILITY
1 7 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 containedon two sep...
Page 24 - Revision H or later power PCB; Replacing revision F or earlier power PCB MR480; RANSFORMERS; EATERPLATE
1 8 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 cor...
Page 25 - EATERPLATES WITH SCREW; AULT
1 9 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 directlyinto the heaterplate. When fitting these heaterplate...
Page 26 - CHEMATICS
2 0 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 - OMPONENT; J PCB; Power Board
2 1 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 29 - viewed from solder side)
2 3 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 - THIS PAGE LEFT BLANK
2 4 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 THIS PAGE LEFT BLANK
Page 35 - LECTRICAL; Ref
2 9 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 lis...
Page 37 - Reference
3 1 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 .................................................. 043040678Power PCB Assembly M...
Page 38 - ECHANICAL
3 2 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...
Page 39 - XPLODED
3 3 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.10.2 E XPLODED D IAGRAMS : MR480
Page 45 - PCB I; DENTIFICATION
3 9 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 8.11 PCB I DENTIFICATION D IAGRAM
Page 46 - PCB H; ARNESS
4 0 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 - RODUCT
4 1 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 areinsignificant to users or servic...
Page 49 - PPENDIX; NGINEERING DISPLAY FUNCTIONS
4 3 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 Powerswitch. After a t...
Page 50 - ROGRAMMING; Error Messages
4 4 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 (%) h P Heaterplate temperature (°C) L Programming link status CP Compare probes (Probe test) i He...
Page 51 - ERIAL; The format of the 3 bytes following the ASCII I.D. is as shown below.; TATUS
4 5 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 byrapidly changing input temperatures. EP1 Hardware fault; Q13 short not effective. EP2 Low probe te...
Page 52 - First Byte; EMOTE
4 6 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...
Page 54 - AINTENANCE; Check humidifier power cable for damage and replace as necessary.
4 8 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 repor...
Page 56 - OW; Possible cause
5 0 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 humidifie...
Page 58 - OW HUMIDITY
5 2 Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001 Excessive water in expiratorycircuit due to rainout. Condensation due to cooling inExpiratory line. Use dual heated circuit. Water ejected fromhumidification chamber intocircuit. Humidification chamber filled beyo...
Page 59 - EMPERATURE DISPLAY; LED; ON
5 3 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 alarmlights. Humidifier voltage rating incorrect. Select correct voltage rated unit. Heaterplate overheat pro...
Page 61 - DO NOT; DO NOT
5 5 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 t...
Page 62 - Set up a heated breathing circuit, see typical setup below:; ETUP; Slide the full humidification chamber on to the heaterbase.
5 6 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 ...
Page 63 - YNAMIC
5 7 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 supportedfrom the patient end so that it drops vertically ov...
Page 64 - Turn the humidifier on.
5 8 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 supportedfrom the pat...
