Service manual

26
Unable to start
motor
Yes
No
9-2-3 Unable to Start Motor
Yes
Check the Lamp
- Take necessary action to “Over
Current” lamp flashing or flikering
- Take necessary action to “High
Temp.” lamp flashing
No
Yes
Yes
No
No
- Check the output signal of the
magnetic switch
- Turn on the power after replace
board
Yes
Yes
No
Start-up
No
After eliminating the cause
Lead-in wiring is
disconnected
Failure of
magnetic switch
Failure of
motor
Failure of
compressor
Failure of temp.
alarm
Request a service
- Check the resistance of incoming
line
- Test wiring and cable capacity, and
replace the cable, if necessary
- Test wiring
- Check the contact and operation,
and replace the switch, if necessary
- Test wiring and resistance
- Manually turn to check the bearing
- Replace the motor, if necessary
- Manually turn to check the rotation
- Request a service if it is defective
1) An air compressor is automatically operated. Take necessary safety precaution to ensure that the
compressor is not unintentionally operated during the maintenance.
2) Make sure to turn the main power off prior to the rotation test.
3) Make sure to turn the main power off prior to the wiring test, except for the measurement of the voltage.
Danger
TROUBLESHOOTING