ARMY TM 9-4120-380-14
AIR FORCE TO 35E9-136-21
4.39 CIRCUIT BREAKFERS (CB 1 AND CB2). This task covers inspection, testing, removal and installation
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.
(1) Disconnect air conditioner input power at source, and
(2) Remove control box assembly (paragraph 4 27).
Check that mounting hardware and circuit breakers are m place and secure (see fig. 4-30)
Check that wire leads are properly connected to circuit breakers and are not damaged (see fig FO-2.).
Check circuit breakers for signs of overheating or other visible damage.
a. Disconnect one terminal and use multimeter to check continuity between circuit breaker terminals. Contacts
should be closed
b. If there is no continuity, replace circuit breaker
a. Tag and disconnect leads
b. Remove two screws (5), lockwashers (1), and flat washers (2).
Remove circuit breaker (4) from mounting plate (3).