ARMY TM 9-4120-380-14
AIR FORCE TO 35E9-136-21
5.9. SERVICE MANIFOLD INSTALLATION.-Continued
Open compressor high and low pressure service valves.
Loosen blue hose at compound gauge port and allow refrigerant to purge for 3-5 seconds, then tighten.
Loosen red hose at pressure gauge port and allow refrigerant to purge for 3-5 seconds, then tighten.
The service manifold is now installed, purged and ready for test of maintenance operations.
FOLLOW ON PROCEDURES
b. Connect air conditioner input power at source.