TM 9-4120-403-14
5-11. EVACUATING THE REFRIGERANT SYSTEM
This task covers:
a. Service
INITIAL SETUP
Tools
Tool Kit, Refrigeration
Vacuum Pump
Materials/Parts
Refrigerant Oil
Lockwasher
Flare Gasket
Equipment Conditions:
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 the system was leak tested and has NO LEAKS. (See para 5-10.)
NOTE
In the event that the compressor was replaced as a result of a burn out, check that compressor burn out
5-23