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TM5-4120-387-14
(4) Suction pressure too high.
Possible causes:
Open equalizing solenoid valve (L2). (See para 5-7.)
Compressor not running.
(See para 5-21.)
Expansion valve bulb damage or poor contact with suction line.
para 5-23.)
l Internal compressor failure. (See para 5-21.)
Problem with liquid quench expansion valve.
(See para 5-20.)
l Problem with regulating valve.
(See para 5-25.)
l Problem with expansion valve.
(See para 5-23.)
1.
When pressure tests are completed, proceed with the maintenance action
indicated.
m.
Turn unit OFF.
n.
Close charging valves on unit.
o.
Remove gages or service manifold hoses from charging valves.
p.
Install charging valve protective caps.
(See
q .
Using screwdriver, secure service valve access cover with six screws and six
flat washers.
5-24
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