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Ref. 185040646 MR730/720/700/480 Technical Manual ¯ Revision F ¯ Issued March 2001
B2 MAINTENANCE SCHEDULE CHECKLIST
(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 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
Temperature Probe
see § 4.3 and Appendix B
q q
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
anodised heaterplate, clip under the front edge of it.)
q q
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 MΩ minimum).
q q
ii The earth stud on the base of the humidifier (10 MΩ minimum).
q q
Earth Leakage test Has to be measured using an electrical safety tester as per IEC601.
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.
q q
Signature:______________________