Troubleshooting
Compressor starts, but shuts
down after a few minutes of
operation. (continued).
Low oil flow. Look for oil leaks in the
compressor capsule. Consult a
SCAI Service Center.
Orifice or the oil cooling line
filter is blocked.
Replace the orifice and the filter.
Compressor starts but shuts
down sometime later.
Water high-temperature
switch is open.
Check the coolant flow and
temperature. Refer to the
Specifications.
Circuit breaker or fuse is
open.
Reset the circuit breaker or
replace a fuse. Compare the
electric service with system
specifications. Consult a SCAI
Service Center if the problem
persists.
Component failure in the
power circuit.
Check for an open circuit
breaker or fuse. Reset or
replace if necessary. Check for
a faulty component.
Incorrect current draw. Measure the current. Check
motor winding resistances.
If checks reveal failed motor
windings or a locked rotor,
consult an APD Service Center.
Compressor overload relay
opens.
If water and power checks
indicate the utilities are within
specifications, interlocks may be
faulty. Consult a SCAI Service
Center.
System starts but gas
pressures are abnormally
high or low.
Wrong equalization pressure. Refer to Specifications and the
section on Charging and
Venting. Leak check the system
if the pressure is low.
Gas line couplings are not
fully engaged.
Be sure that all Aeroquip
couplings are fully engaged and
torqued.
Gas lines are connected
wrong.
Reconnect. See the Installation
section.
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