four panel fastener screws in the mounting flanges at each end of the junction box.
d. Bend the end of the push-pull circuit breaker reset flexible cable(8) straight. Loosen the setscrew (6) in the
end of the core end fitting (5), and slide off the end fitting.
e. Remove screw from the two loop clamps (9) holding the flexible cable, and remove the flexible cablefrom
the junction box and the circuit breaker actuator arm connector plate (7).
f. Full the junction box forward. and disconnect the two wiring harness plugs, P2 and P3. from receptacles (19
and 20) on the junction box.
g. Remove the junction box from the air conditioner.
Disassemble the junction box only to the extent necessary to test and replace components. in accordance with the
a. Unscrew four panel fastener screws from the top and bottom edges of the junction box cover, and remove the
b. Pull fuses (17 and 18, figure 5-2) out of fuse holders.
c. Tag and disconnect wire leads from components.
d. Remove four screws, washers and self-locking nuts from the mounting flanges of each wiring harness
Components can be tested without removing them from the junction box. Unless complete replacement is
necessary, remove only those components that fail to pass inspection/test
e. Remove mounting hardwtue from components as necessary to dismount them from the junction box, and
remove the components.
Inspect all parts of the junction box and its components for obvious damage. missing parts, and evidence of electrical
failure such as burnt spots or spattered metal. Perform continuity and functional tests on components as indicated in the
a. Fuses. Remove fuses, one
at a time, from fuse holder clips and check continuity with
multimeter or other continuity tester. Continuity should exist. If it does not. replace the fuse.
When continuity testing of components is required, the ohmmeter multi-tester or other continuity tester
should be set on low resistance (ohms) for checking continuity of coils, direct connections, etc. For
checking possible short circuits, as between coil and casing or common ground, a high-resistance
(ohms) setting should be used.
b. Circuit Breaker. Reset the circuit breaker
by pressing the handle up, then down.
phase (A1-A2. B1-B2 and C1-C2) and the auxiliary switch (C-NO). If continuity is not indicated in all circuits, replace
the circuit breaker. If load testing equipment is available. test each phase (A, B, C) of the circuit breaker. The circuit
breaker should hold 20 amperes continuously, and should trip within 0.5-4.0 seconds when a 25-ampere load is applied.
If load testing equipment is not available, and circuit breaker trips frequently. substitute a circuit breaker known to be
good, and check operation.