TM 10-4130-237-14
5-7.
REFRIGERATION SYSTEM LEAK-TEST (CONT)
Materials/Parts
Liquid detergent, item 6,
appendix E
R–12 Refrigerant, item 15,
appendix E
a.
General Instructions. After repair or replacement of any refrigeration system component, the system must be
thoroughly leak-tested before it is recharged with refrigerant. Leak-testing is also a method of troubleshooting when a
system has lost all or part of its refrigerant charge. There are two methods of leak-testing: the electronic gas detector
method and the soap solution method.
b.
Elecronic Gas Detector Method. The electronic gas detector is sensitive to a small amount of gas, making it
able to detect small leaks. However, due to rapid dispersion of gas, it may be hard to pinpoint large leaks. The detector
must be used in a well-ventilated but draft-free area.
1
Remove caps from two compressor service ports.
2
Close manifold valves.
NOTE
DO NOT tighten hose connections.
Hose on compound gage side of manifold is suction hose.
Hose on high pressure gage side of manifold is discharge hose.
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