TM 9-4120-402-14
14-46. EVAPORATOR FAN.
This task covers:
a. Remove
b. Clean
c. Inspect
d. Replace
e. Install
INITIAL SETUP
Tools
Equipment Conditions
:
Refrigeration Unit Service Tool Kit
Appendix B, item 1
CAUTION
Scrub Brush
Use disconnect switch (NOT POWER
Appendix B, item 2
CABLE) to disconnect power to unit.
Damage to cable connector pins will
Materials/Parts
result if cable is used.
Evaporator Fan
Disconnect power at power source.
Rags
Remove electric heater elements and support
Appendix E, item 13
Dry Cleaning Solvent
Appendix E, item 3
Detergent
Appendix E, item 15
a. Remove.
(1) Remove lock nut (1) from end of motor shaft (2). Carefully pull evaporator fan (3) up and off of motor shaft.
(2) Remove shaft key (4) and shims (5) (if applicable) or tape in place so that they will not be lost.
WARNING
Dry cleaning solvent used to clean parts is potentially dangerous to personnel and property. Do
not use near open flame or excessive heat. Use in well ventilated area.
b. Clean.
Wipe or vacuum all dust and dirt off guard. Clean with a cloth dampened with a detergent solution or dry cleaning
solvent. Use a soft scrub brush if necessary to dislodge caked on dirt. Dry thoroughly.
c. Inspect.
(1) Check evaporator fan (3) for dents, chips, tears, and bent, loose, or missing fan blades. Check that hub is
securely attached. Replace if damaged.
(2) Check inlet bell (6) for dents, tears, or any distortion that would cause interference with fan. Replace if
damaged.
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