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TM 10-4130-239-14
5-7.
REFRIGERATION SYSTEM SERVICE - EVACUATION (CONT)
NOTES
Do not evacuate a leaking system.
The vacuum
created can pull air, moisture, and dirt into the
system.
It is important that all non-condensables be
removed prior to the final charge to avoid
excessive head pressures and temperatures, and to
use the full capacity of the system.
1.
Connect the hose from the service manifold to the vacuum pump.
Use a larger diameter (3/8 in. ID) hose for greater efficiency
between pump and manifold gauge set.
2.
Arrange service manifold hoses so both a
refrigerant tank can be accessed without
valve on refrigerant tank.
vacuum pump and an R-12
breaking a vacuum.
Open
5-14
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