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b. Instaltation. Installation
removal.
5-27. Tubing
Figure 5-14. Compressor, removal and installation.
is the reverse of
5-28. Check Valve
a. General The check valve is installed in the
system to prevent liquid refrigerant from flowing
from the accumulator tanks to the compressor
Refer to paragraph 6-3 and replace any defective
tubing with tubing of the same length, size,
shape,
and material.
Following replacement,
pressure test, evacuate, and recharge the refrig-
erant system (para 6-5).
Caution: If the refrigerant system is opened
to the atmosphere the dehydrator must be re-
placed.
discharge valves during compressor off-cycle pe-
riods. The check valve is normally closed and
opens at a 0.5 psig pressure differential.
b. Testing.
(1) Install pressure gauges (para 6-6).
(2) Operate air conditioner in cooling mode.
charge pressure and low suction pressure. This is
5-18
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