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TM 5-4120-393-14
4-42. Circuit Breaker (CB)
This task covers:
a. Removal
c. Testing
b. Inspection
d. Installation
Initial setup.
Tools:
Tool kit, service, refrigeration unit NSN 5180-00-597-1474
Multimeter NSN 6625-00-553-0142
Personnel: 1
Equipment condition:
1. Turn unit power off at power source. If there is a chance that it will be turned on, also disconnect power
cable to air conditioner.
2. Remove lower front panel. See para 4-24.
General Safety Instructions:
WARNING
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.
REMOVAL
1.
Using a screwdriver, remove four screws (1) from junction box cover (2). Remove junction box cover.
NOTE
Inspection/Testing (installed) can be done at this point.
2.
Tag and disconnect wire leads.
3.
Using screwdriver, remove six screws (3), flat washers (4), and lock washers (5).
4.
Pull cover down. Using pliers, pull shaft that holds reset toggles together and disconnect reset actuator arm. (See
para 4-40 for reset removal.)
5.
Remove circuit bre aker (7) and cover (6).
4-100

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