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LEAK TESTING THE REFRIGERANT SYSTEM (Continued)
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TM-5-4120-359-14 Air Conditioner Split Package 18 000 BTU/HR Cooling 30 000 BTU/HR Heating 208 Volt 3 Phase 400 Hertz Manual
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CHARGING THE REFRIGERATION SYSTEM - 506780115
TM 5-4120-359-14
4-9. EVACUATING THE REFRIGERANT SYSTEM
Figure 4-6. Evacuation of Refrigeration System
The refrigeration system must be evacuated to remove all moisture before it is charged with Refrigerant-22.
CAUTION
Don't evacuate a leaking system. The vacuum created can cause air, moisture, and
dirt to enter system.
a. Check that system was leak tested and has NO LEAKS.
b. Check that new filter-drier was installed. If not, install one.
c.
Check that both service valves and charging manifold valves are closed.
d. Attach hose assemblies to service valves and charging manifold valves.
e. Attach center hose assembly to vacuum pump.
f.
Start vacuum pump.
g. Open charging manifold valves.
4-32

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