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TM 9-4120-389-14
5-7. EVACUATING THE REFRIGERANT SYSTEM
Figure 5-3. 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.
5-12
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