ARMY TM 9-4120-380-14
AIR FORCE TO 35E9-136-21
5 15. CHARGING REFRIGERANT SYSTEM. Continued
SERVICE - continued
If system pressure equalized prior to admitting a complete charge, proceed to Step h.
h. Position refrigerant cylinder so that gas only will be dispensed.
i. If air conditioner is set up for single mode of operation, proceed to Steps J and k if air conditioner is set up for
remote operation, proceed to Step k.
k. Connect air conditioner input power at source
l. Start air conditioner m COOL mode
m. Open CGV when complete charge weight has been admitted
n. Close CGV and monitor weight of refrigerant cylinder as compressor draws additional refrigerant into system
o. Perform pressure check and repeat Steps m and n, if necessary (paragraph 5.16)
(1) Milky white or bubbly liquid means system has a low charge
Bubbles may be visible at temperatures less than 70 (21 ) or greater than 100
(2) Clear bubble-free liquid means system is fully charged.
q. If charge is low, add gas refrigerant.
Be sure that drum is switched to gas positron.
Continue to charge until sight glass IS clear and bubble free.
r. Check air conditioner for proper cooling. There should be at least a 15 temperature difference between