TM9-4120-401-14
EVAPORATOR FAN, MOTOR, AND HOUSING.
d. Replace
c. Test
b. Service
This task covers:
a. Inspect
INITIAL SETUP
Tools
Equipment Condition
Refrigeration Unit Service Tool Kit
Appendix B, item 1
Materials/Parts
Use disconnect switch (NOT POWER
CABLE) to disconnect power to unit.
Motor
Damage to cable connector pins will
result if cable is used.
Fan Impeller (Left)
Disconnect power at power source.
Fan Impeller (Right)
Remove condensate drain tubing (para 4-23).
Bell Inlet (2)
Remove transformer (para 4-39).
Self-locking Nut
Personnel required
Grommets (4)
Two
Front Fan Housing (Left)
Front Fan Housing (Right)
Rear Fan Housing (Left)
Rear Fan Housing (Right)
Tiedown Straps (3)
a. Inspect.
(1) Check that all fan housing parts are in place and in good condition.
(2) Inspect fan impellers (1) and (2) for damaged or bent blades and free rotation.
(3) Inspect the motor (3) for signs of overheating.
(4) Check all mounting hardware for tightness.
Disconnect P8 and P9 motor connectors and check for loose, damaged, or missing pins.
(5)
Connect P8 and P9 motor connectors.
(6)
b. Service.
Wipe all dust or dirt from fan impellers (1 ) and (2), motor (3), and fan housing assembly.
4-105
