Repair Heater, Duct Type, Stationary (Duct #3).

TM 55-1905-223-24-17

2-19. Repair Heater, Duct Type, Stationary (Duct #3). (FIGURE 2-9)

This task covers:

a. Repair

INITIAL SETUP :

Tools

Equipment Condition

Tool kit, general mechanic's,

Circuit breaker switch OFF, power panel

locked and tagged "Out of Service

Tool kit, electrician's,

Do Not Operate."

Materials/Parts

Cartridge fuse P/N 40526001

Heating element P/N 52424176

Electrical tag, Item 1, Appendix C

REPAIR

Repair consists of replacing cartridge fuses and heating elements.

Replace cartridge fuse.

(1)

Open heater front cover (7).

(2)

Check for defective cartridge fuse (8), paragraph 2-17.

NOTE

Ensure cartridge fuse is properly marked and identified for

assembly.

(3)

Remove defective cartridge fuse (8) from block fuseholder (9).

(4)

Install replacement cartridge fuse (8) in block fuseholder (9).

Replace heating element.

(1)

Tag electrical line connections at terminal ends of heating element (4).

(2)

Remove terminal nuts (6) and washers (5) securing heating element (4) to mounting flange (3).

2-51