TM 9-4120-402-14
4-48. CONDENSER COIL CLEANING. - continued
b. Inspect.
(1) Check condenser coil (1) fins for dents, bent edges, or any condition that would block or distort air flow.
Straighten all damaged fins.
(2) Should a leak or major damage be evident, notify supervisor.
NOTE
FOLLOW-ON MAINTENANCE:
Install control assembly (para 4-34).
Install electromagnetic interference filter (para 4-32).
Attach condenser coil guard (para 4-17).
Connect power at power source.
4-49. SOLENOID VALVE (L1) COIL.
This task covers:
a. Test
b. Replace
INITIAL SETUP
Tools
Equipment Condition
Refrigeration Unit Service Tool Kit
Remove control assembly (para 4-34).
Appendix B, item 1
Power Supply
Appendix B, item 6
Materials/Parts
Solenoid Valve Coil
a. Test.
(1) Tag and disconnect wire leads from the solenoid valve coil (1).
(2) Using a multimeter set to measure resistance, check for continuity between solenoid valve coil (1) terminals 1
and 2. If continuity is not found, the coil is open and must be replaced.
(3) Check for continuity between each solenoid valve (1) terminal 1 and 2 and coil casing. If continuity is found
the coil is shorted and must be replaced.
(4) If continuity checks are satisfactory, apply 28 volts dc across solenoid valve coil (1) terminals 1 and 2. Listen
for a sharp click when the valve changes position. If a click is not heard, internal valve problems are
indicated and the entire valve should be replaced. Notify supervisor.
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