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91961OPR
Trouble RemedyProbable Cause
D. Refrigerant loss. D. Check the sight glass. If bubbles
are seen flowing through it, the
Chiller needs to be leak checked
and recharged with refrigerant.
E. Water bypass valve failed. E. Consult technical service
department.
F. Defective pump. F. Replace pump.
HIGH PRESSURE ALARM
LIGHT “ON”.
A. Restricted condenser airflow. A. Clean the fins of the condenser
and ensure that the air flow is not
restricted.
B. Defective condenser fan
and/or motor.
B. Check to ensure that the fan
blade is not blocked. Replace the
fan motor if necessary.
C. Defective expansion valve. C. Check to ensure that the fan
blade is not blocked. Replace the
fan motor if necessary.
D. Low or no condenser water
flow.
D. Ensure that there is adequate flow
throught piping to condenser.
LOW TEMPERATURE ALARM A. Low or no process liquid flow. A. Ensure that there is adequate flow
through the process piping.
B. Defective thermostat. B. Replace the thermostat.
C. Pro cess water too cold -
below 35_ F.
C. Increase the thermostat setting.