Evaporator Fans

TM 5-4120-393-14

4-55. Evaporator Fans

This task covers:

a. Removal

c. Inspection

b. Cleaning

d. Installation

Initial setup.

Tools:

Tool kit, service, refrigeration unit NSN 5180-00-596-1474

Personnel: 2

Materials:

Equipment condition:

1. Turn unit power off at power source. if there is a chance that it will be turned on, also disconnect power cable

to air conditioner.

2. Remove top panel. See para 4-25.

3. Remove conditioned air filters. See para 4-30.

4. Remove conditioned air inlet grilles. See para 4-22.

General Safety Instructions:

WARNING

Disconnect input power to the air conditioner before performing any internal

maintenance. Voltages used can KILL. Shutting the unit off at the control panel

does not disconnect unit power.

REMOVAL

Disconnect motor cable connector (1).

NOTE

Fan and motor cannot be removed together as an assembly. Take care that fans

and coil are not damaged.

Using wrench, loosen two setscrews (2) in fan hub.

Support or hold motor (3) as hardware is removed.

Note the number and location of shims prior to removing hardware in next step.

Remove four screws (4), four flat washers (6), four lock washers (5), and shims (7) from each motor (3) to be

removed.

Carefully lift motor (3) from unit.

Carefully lift fan (8) from unit.

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