TM 9-4120-399-14
4-34. CIRCUIT BREAKERS. (CB1, CB2, CB3). - Continued.
b. Test. - Continued.
(2) DC Circuit Breaker.
(a) With circuit breaker in ON position, check for continuity between terminals 1
and 2.
(b) With circuit breaker in OFF position, check for discontinuity between terminals
1 and 2.
(c) If circuit breaker fails either test in steps (a) or (b), replace circuit breaker.
(3) Compressor Circuit Breaker.
(a) With circuit breaker in ON position, check for continuity, between terminals A1
and A2,
B1 and B2, and C1 and C2.
(b) With circuit breaker in OFF position, check for discontinuity between terminals
A1 and A2, B1 and B2, and C1 and C2.
(c) If circuit breaker fails either test in steps (a) or (b), replace breaker.
c. Installation.
(1) Install circuit breaker (8), circuit breaker (7), circuit breaker (6), and twelve screws
(5).
(2) Connect all wires to circuit breakers and remove tags.
(3) Place cover (4) onto rear of unit and install with eight flat washers (3), eight lock
washers (2), and eight screws (1).
4-72
