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Page Title:
COMPRESSOR CIRCUIT BREAKER (CB1) REMOVAL, INSPECTION, TESTING, REPLACEMENT, AND INSTALLATION |
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 TM 9-4120-428-14
UNIT MAINTENANCE
AIR CONDITIONER, HORIZONTAL, COMPACT
(NSN 4120-01-502-1319)
COMPRESSOR CIRCUIT BREAKER (CB1) REMOVAL, INSPECTION, TESTING, REPLACEMENT, AND
INSTALLATION
INITIAL SETUP:
Equipment Condition
Tools
Remove the Control Module (WP 0029 00)
Refrigeration Unit Service Tool Kit, WP 0000 00, Item
1
Materials/Parts
Compressor Circuit Breaker
Self-Locking Screws (3)
5
14
3
4
6
2
7
13
8
12
14
9
10
9
1
11
REMOVAL
1. Remove four machine screws (1) and pull off the control cover (2).
2. Loosen setscrew (3) in the knob (4) and remove knob.
3. Remove three self-locking machine screws (5) from the spacer posts (6) and remove the back mounting plate (7).
4. Tag and disconnect the wires from the Compressor Circuit Breaker (12).
5. Remove pin (8) and spacers (9) from circuit breaker toggles.
6. Remove screws (10) and flat washers (11) and pull the circuit breaker (12) from the designation plate (13).
INSPECTION
Check the general condition of the circuit breaker and check for loose, broken, or missing terminals.
TESTING
1. Ensure that continuity exists on each pair of terminals when circuit breaker is in the on position.
2. Ensure that there is no continuity between terminals with the circuit breaker in the off position.
REPLACEMENT
0033 00-1
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