Repair Section
40
7.7 Capacitor Inspection (For Fan Motor and Compressor)
(1) Ohmmeter method
• Set the ohmmeter to the 10 M ohm range. Place the two probes against the two terminals of the
capacitor. At first, the ohmmeter indicates small value, then the reading should gradually
increase towards infinity (
), indicating that the capacitor is charging. If the reading indicates
infinity immediately (open), or the ohmmeter fails to move from 0 ohm (shorted), replace the
capacitor.
(2) Capacitance tester method
• Use a capacitance tester to check the
capacitor for the values indicated below. If the
value tested is not within 10 % of the indicated
capacitance, replace the capacitor.
WARNING
• Properly discharge the capacitor(s) before and after testing. Failure to discharge the
capacitor may cause damage to the test equipment and/or unit, and result in personal
injury (electrical shock) or death.
Capacitor
Rated Voltage
Capacitance
For Fan Motor
400 V
10 µF
For Compressor
400 V
35 µF
ILL00566-00
