MAINTENANCE OF ENVIRONMENTAL CONTROL SUBSYSTEM

TM 55-1905-223-24-17

MAINTENANCE OF ENVIRONMENTAL CONTROL SUBSYSTEM

2-17. Repair Heater, Duct Type, Stationary (Duct #1). (FIGURE 2-7)

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."

Materials/Parts

Cartridge fuse P/N OT-20

Heating element P/N 33904

Electrical tag, Item 1, Appendix C

REPAIR

Repair consists of replacing cartridge fuses (3) and heating elements (7).

a. Replace cartridge fuse.

WARNING

Secure heater access doors in their full open position to avoid personal head injury.

(1) Open heater access doors (2).

(2) Check for defective cartridge fuse (3). Refer to paragraph 2-15.

NOTE

Ensure cartridge fuse is properly marked and identified for assembly.

(3) Remove defective cartridge fuse (3) from transformer block (4).

2-45