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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

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