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REPLACEMENT - TM-9-4120-428-140158
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TM-9-4120-428-14 Air Conditioner Horizontal Compact 9000 BTU/HR 208 Volt Three Phase 400 Hertz Model No. F9000H-4SPFI Manual
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REPLACEMENT - TM-9-4120-428-140160
TM 9-4120-428-14
UNIT MAINTENANCE
AIR CONDITIONER, HORIZONTAL, COMPACT
RELAY K4 INSPECTION, TESTING, AND REPLACEMENT
INITIAL SETUP:
Tools
Materials/Parts
Refrigeration Unit Service Tool Kit, WP 0000 00, Item
Relay
1
Self-locking nuts (3)
Power Supply, WP 0000 00, Item 6
Equipment Condition
Remove Junction Box (WP 0036 00)
2
1
3
8
7 11 6
3
4
C
2
9
10
5
1
RELAY DIAGRAM
INSPECTION
Check the relay for general condition, evidence of overheating, and loose, broken, or missing terminals.
TESTING
1. Apply +28 VDC to terminal TB1-6 and 28 VDC to terminal TB1-4.
NOTE
Terminals 10 and 8 are not used in single-phase units
2. Check continuity across terminals 1 and 3, 5 and 11, and 10 and 8.
3. Check the multimeter. It should indicate that terminals 1 and 3, 5 and 11, and 10 and 8 are closed. Terminals 1 and
4, 5 and 6, and 10 and 7 are open.
4. Remove 28 VDC power. The Multimeter should indicate that terminals 1 and 4, 5 and 6, and 10 and 7 are closed and
that terminals 1 and 3, 5 and 11, and 10 and 8 are open.
0041 00-1

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