Fisher & Paykel MR700, MR720, MR730, MR480 technical manual Photocopy and File in Maintenance Records

Page 55

 

 

 

 

 

 

49

 

 

 

 

B2

MAINTENANCE SCHEDULE CHECKLIST

 

 

 

 

 

 

(PHOTOCOPY AND FILE IN MAINTENANCE RECORDS)

 

 

 

 

Type of service check:

qmonthly

q3 monthly

q6 monthly

qyearly

 

Humidifier Serial Number:___________________________

Date: ______________

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Step

 

 

 

 

Method

Pass

Fail

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Monthly

 

Check Temperature Probe

 

 

Refer Appendix B1.1

q

q

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check Reusable Heater Wire

 

 

Refer Appendix B1.1

q

q

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check Heater Wire Connections

 

 

Refer Appendix B1.1

q

q

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check Power Cable

 

 

Refer Appendix B1.1

q

q

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Perform Self-Test

 

 

Refer Appendix B1.1

q

q

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Three Monthly

 

Perform Temperature Probe Test and Check

 

see § 4.3 and Appendix B

q

q

 

 

 

Temperature Probe

 

 

 

 

 

 

Annually

 

Performance Check

 

 

see § 6

q

q

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Electrical Safety Checks - as required

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Method

 

 

 

Pass

Fail

 

 

 

 

 

 

 

 

 

 

 

 

 

Earth resistance test

 

Measure the resistance from the earth pin on the mains plug to:

 

 

 

 

 

 

 

i The heaterplate.(0.2 Ω maximum) (To get a good contact on the

q

q

 

 

 

 

 

anodised heaterplate, clip under the front edge of it.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ii The earth stud on the base of the humidifier(0.2 Ω maximum).

q

q

 

Insulation resistance test

 

Use a 500V DC tester to measure the resistance from the phase pin

 

 

 

 

 

 

 

on the mains plug to:

 

 

 

 

 

 

 

 

 

 

i The heaterplate (10 M Ω minimum).

 

q

q

 

 

 

 

 

ii The earth stud on the base of the humidifier (10 M Ω minimum).

q

q

 

Earth Leakage test

 

 

Has to be measured using an electrical safety tester as per IEC601.

q

q

 

 

 

 

 

Measure earth leakage with the earth probe of the tester on the

 

 

 

 

 

 

 

heaterplate. Earth leakage current is measured at normal operating

 

 

 

 

 

 

 

voltage and frequency of supply.

 

 

 

 

 

 

 

 

Should be 0.5 mA maximum in no fault condition.

 

 

 

 

 

 

 

 

Signature:______________________

 

 

Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001

Image 55
Contents Auckland, New Zealand D E L S MR730 MR720 MR700 MR480National Office Revision F changes Section Description of ChangeContents Performance Check MR480 Dual Probe Temperature Test10.1 Power PCB Harness Connection DiagramMaintenance Schedule B1.1 Maintenance Schedule ChecklistAppendix D Models MR730/720/700 MR700 Series General SpecificationsRSD EOHSET TOPMR700 Series Humidifiers with Version 1.0 Software Operating Controls and ModesStandby Button MR700/720/730 only 1 MR700/MR730 ALL Software VERSIONS, MR720 Version 1.0 only 2 MR720 Version 2.0, 3.0 SoftwareAlarms and Indicators Version 3.0 Software Version 1.0 and Version 2.0 SoftwareAudio Alarm Circuit Operation Power Line Interrupt Revisions D/F Pcbs Revision H and J Pcbs For models with Revision D PCB and earlier CalibrationPage Performance Check Alarms Check MR700/720/730 Dual Probe Temperature Test Servicing Information Replacing revision F or earlier power PCB MR700/720/730Replacing revision F or earlier power PCB MR480 Fault Location SCHEMATICS, Part Lists and Mechanical Drawings Power Board Control Board Component Layout Revision F PCB Page This page Left Blank Circuit Diagrams Revision H and J PCB Control PCB Circuit Diagrams Revision H and J PCB Power PCB Circuit Diagrams Revision F PCB Control PCB Circuit Diagrams Revision F PCB Power PCB LED6,LED7 LED8,LED9,LED10 DSP1, DSP2, DSP3LED1, LED3 LED2,LED4, LED5,LED11VR4 SW5SPK1 VR1Fuse fast acting 2 a 20 × 5 mm for 230 999830009 MR480AGM Exploded Diagrams MR480 10.3 MR730/720/700 Mechanical Parts MR720ASU Exploded Diagrams MR730/720/700 Heaterplate Assembly Parts MR730/720/700/480 Page PCB Identification Diagram Power PCB Harness Connection Diagram Date Change First Serial Number Comments Affected Product Change HistoryYear Model Code Serial Number AAA XxxxxOFF Appendix aA2.3 Integral Display Error MessagesEP4 EP1EP2 EP3Second Byte First ByteThird Byte A5.4 Serial Data Interface Connector Appendix B B1 Maintenance ScheduleElectrical Safety Checks as required Photocopy and File in Maintenance RecordsPossible cause Action to take Appendix CHigh Temperature C1.6 C1.5LED on Check Voltage Rating Of Unit Appendix D Cleaning instructionsAppendix E Setup NotesDynamic Test Sequence MR730/720/700 Dynamic Test Procedure MR480