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TM 10-4130-239-14
5-6.
REFRIGERATION SYSTEM SERVICE - LEAK-TEST (CONT)
4.
When the test area is free of residual refrigerant, warm up the
electronic leak detector.
Then calibrate it according to the
instruction manual.
This instrument is extremely sensitive, and is
used to detect SMALL leaks.
Exposing the probe
to heavy refrigerant concentrations will cause
the sensing element to “Hang-up”, requiring
rejuvenation by operating for a time in an
atmosphere known to be free of refrigerant.
The
life of the catalytic element will be
significantly shortened.
5.
Move the probe slowly over possible leak points.
6.
If the leak detector identifies refrigerant in the area before a
specific point of sensing can be reached, either the ventilating
time was too short or there is still a significant leak.
Recheck
area with liquid bubble detector, and/or ventilate area more
thoroughly.
5-7.
REFRIGERATION SYSTEM SERVICE - EVACUATION.
This task covers:
Evacuation
Equipment
Condition
Para
Condition Description
Tools
2-8
Engine stopped.
4-15
Housing removed.
5-3
Service manifold
Tool Kit, Service
Refrigeration, item
5, Appendix B
Vacuum Pump, item 7,
gauges
Appendix B
attached and system
discharged.
Materials/Parts:
5-24
New filter-dryer installed
Refrigerant, item 24,
Appendix E
5-13
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