Troubleshooting
Compressor starts but shuts
down sometime later.
(continued)
Incorrect current draw. Measure the current. Check the
motor winding resistances. See
the compressor manual. If
checks reveal failed motor
windings or a locked rotor,
consult a SCAI Service Center.
Compressor overload relay
opens.
If water and power checks
indicate utilities are within the
specifications, interlocks may be
faulty. Consult a SCAI Service
Center.
System starts, but the gas
pressures are abnormally
high or low.
Wrong equalization pressure. Refer to Specifications in the
compressor manual and the
section on Charging and
Venting in this manual. 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.
Gradual loss of helium gas
pressure.
Gas is leaking from the
compressor.
Leak check the compressor and
repair.
Compressor runs, but
elapsed time meter does not.
Defective elapsed time meter
or motor contactor.
Replace the defective
component.
AVOID INJURY. The compressor’s elapsed time meter contains a lithium
battery. Do not remove the battery. Do not recharge, disassemble, mutilate, wet
or dispose of the meter in fire. Contact local environmental authorities for proper
disposal of the lithium battery.
Valve motor does not start
when the compressor starts.
Cold head cable is not
connected.
Stop the compressor. Connect
the cable.
Open circuit in the cold head
cable.
Disconnect the cable. Check
each conductor for continuity.
Replace the cable if necessary.
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