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TM 5-4120-393-14
5-14. Charging Refrigerant System (cont)
b.
Continue to charge until sight glass is clear and bubble free.
c.
Close the air conditioner low pressure service valve and the refrigerant drum valve.
24. Check air conditioner for proper cooling. There should be at least a 15 temperature difference between evaporator
discharge air and inlet air. Turn the mode selector switch to OFF.
25. Assure that the high and low pressure air conditioner service valves are closed, and remove the charging manifold
hoses from the air conditioner service valves.
26. Install the valve stem and hose connection protective caps.
5-32
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