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9600 Compressor Installation, Operation, and Maintenance
P/N 8040540 C-3
C
HELIX TECHNOLOGY CORPORATION
-
TI C
RY
OG
EN
ICS
3) System circuit breaker
(CB1) will not remain in
the ON (1) position
when switched ON. The
Control Circuit circuit
breaker (CB2) trips
when excessive current
is being drawn by the
cold head or 24 volt
compressor control cir-
cuits.
1) Damaged On-Board
power cable, connectors,
or drive motor.
2) Damaged component in
the compressor power or
control circuit.
1) Check for compressor
operation with cryopump
cable disconnected from
compressor. Refer to
Appendix A to contact
the Customer Support
Center if the compressor
operates improperly.
2) Refer to Appendix A to
contact the Customer
Support Center.
4) System circuit breaker
(CB1) remains in the ON
(1) position and the com-
pressor stops after sev-
eral minutes of operation
and remains OFF (0).
1) Thermal protective
switches are open.
2) Very cold water has caused
a restriction of oil flow
through the oil injection
orifice during start-up.
1) Check for inadequate
water cooling. Refer to
Table 1-3.
2) Recheck for proper cool-
ing water temperature.
Refer to Table 1-3.
Restart compressor
repeatedly until continu-
ous operation is achieved.
5) System circuit breaker
(CB1) trips after a period
of running.
1) Loss or degradation of
power from the source.
2) Defective motor windings.
1) Check that line voltage is
correct on all phases.
2) Check running current on
all phases.
3) Refer to Appendix A to
contact the local Cus-
tomer Support Center.
6) All cryopumps making
loud noise.
1) Cryopump power phase
switch is in the wrong
position.
1) Set power phase switch in
opposite position.
Table C-1: Compressor Troubleshooting Procedures (Continued)
Problem Possible Cause Corrective Action