MovinCool 24HFU Service Manual - Manual (Page 37)

MOVINCOOL 24HFU / 24HFU-1 SERVICE PAGE 37
REPAIR - INSPECTION AND REPAIR OF ELECTRICAL SYSTEM • 24HFU
4-4. Inspection of Full Tank Warning Lamp
Make a test circuit as shown. If the lamp fails to
light up, replace it.
■ Inspection of Full Tank Warning Lamp
4-5. Inspection of Drain Switch
Check for continuity between terminals 1 and 2.
Continuity should exist. With switch depressed,
continuity should exist between terminals 1 and
3. If continuity is not as specified above, replace
the switch.
■ Inspection of Drain Switch
CF1
CF2
RX12
■ Inspection of Fan Motor
■ Inspection of Compressor Motor
4-6. Inspection of Fan Motor
Measure resistance across the terminals of the
fan motor.
Terminals
CF2 - RX12 Approx. 12.5
Ω
CF1 - RX12 Approx. 6.53
Ω
At 25˚C (77˚F)
If the measured resistance is not equal to these
standard values, replace the fan motor.
4-7. Inspection of Compressor Motor
Measure resistance across the terminals of the
compressor motor.
Terminals
R - C Approx. 0.94
Ω
C - S Approx. 1.96
Ω
S - R Approx.
2.90Ω
At 25˚C (77˚F)
If the measured resistance is not equal to these
standard values, replace the compressor. The
compressor has a built-in overload relay. The
overload relay should be operational if the above
resistance is obtained under normal tempera-
ture.