Repair Fan, Ventilating (Supply Fan #5)

TM 55-1905-223-24-17

3-21. Repair Fan, Ventilating (Supply Fan #5). (FIGURE 3-12)

This task covers:

a. Repair

INITIAL SETUP :

Tools

Equipment Condition

Tool kit, general mechanic's,

Circuit breaker switched OFF, power

panel locked and tagged "Out of

Tool kit, electrician's,

Service - Do Not Operate."

See TM 55-1905-223-10 for HVAC systems

operation and equipment.

Materials/Parts

Tag, Item 1, Appendix C

Front box guard P/N 716654-01

Impeller P/N 603921-01

REPAIR

WARNING

Make sure electrical power is OFF to avoid personal injury.

a. Remove box guard (5) from ventilating fan (1) (paragraph 2-26).

b. Visually check the box guard (5) for dented guard material (6). Remove dents by bending or

hammering as necessary. Refer to paragraph 2-27 for removing and replacing guard.

Visually check impeller (4) for bent or broken blades. Replace ventilating fan if blades are bent or

d. For repair of ac motor, refer to paragraph 3-20.

e. Install guard (5) on ventilating fan (1) (paragraph 2-27).

Operational check:

(1)

Turn electrical power ON.

(2)

Start and run fan to check operation.

(3)

Remove "Out of Service" tag from circuit.

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