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5-10.
TM5-4120-377-14
Figure 5-5. Evacuation of Refrigeration System
The refrigeration system must be evacuated to remove all moisture before it is charged with refrigerant-22.
a.
b.
c.
d.
e.
f.
g.
Don’t evacuate a leaking system. The vacuum created can cause air, moisture, and dirt to
enter system.
Check that system was leak tested and has NO LEAKS.
NOTE
In the event that the compressor was replaced as result of a burn out, check that
compressor burn out procedures were followed. (See para 5-20.)
Check
Check
Attach
Attach
that new filter-drier was installed. If not, install one.
that both service valves and charging manifold valves are closed.
hose assemblies to service valves and charging manifold valves.
center hose assembly to vacuum pump.
Start vacuum pump.
Open charging manifold valves.
5-14
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