Appendices 8200 Compressor
Appendix B: Troubleshooting Procedures Installation, Operation, and Service Instruc-
8040353 Brooks Automation
6-6 Revision AA
3) Compressor stops
after several minutes
of operation and
remains off.
3a) High temperature of the
compressor is caused by
insufficient cooling water,
resulting in the opening of
thermal protective switch
(water-cooled compressor
only).
3a) Confirm that cooling water
to the compressor is flowing.
Confirm that proper cooling
water flow rate and pressure
exist by referring to Figure 4-3
on page 4-7.
3b) After turn-off, very cold
cooling water was left run-
ning through the compressor.
The resulting low oil tempera-
ture has caused a restriction
of oil flow through the meter-
ing orifice during startup.
3b) Turn on the compressor
and allow it to run until it has
stopped several times, allow-
ing the oil temperature to rise
and the compressor to operate
continuously for one hour
minimum.
3c) Very cold cooling water is
circulating through the com-
pressor. The resulting low oil
temperature causes a restric-
tion of oil flow through the
metering orifice during
startup.
3c) Recheck for proper cooling
water temperature per, Cool-
ing Water Requirements
(Water-Cooled Compressors
Only).
3d) Ambient temperature is
unusually high resulting in
the opening of the thermal
protective switch (air-cooled
compressor only).
3d) Provide a free flow of air to
the compressor. Confirm a 12-
inch (30 cm) clearance at the
front and back of the compres-
sor. Confirm unobstructed and
clean heat exchanger surfaces.
3e) Insufficient helium supply
pressure is indicated by the
supply pressure gauge.
3e) Add helium per, Unsched-
uled Maintenance on page 5-6.
3f) High temperature of the
compressed helium in the dis-
charge line from the compres-
sor pump has tripped the
thermal protective switch.
3f) Confirm that oil is visible in
the compressor sight glass (air-
compressor only).
3g) Mechanical seizure. 3g) Contact the Product Ser-
vice Department.
Table 6-1: Compressor Troubleshooting Procedures
Problem Possible Cause Corrective Action
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