Recirculating cooler
(
Chiller
)
26
Section V Trouble Shooting and Maintenance
5.1 Trouble Shooting
Phenomenon:
Chiller starts with the power supply switch indicator not on
and pump not working for the first time operation;
Possible reason and solution:
Reason:
The breaker switch is on “OFF” status.
Solution:
Turn “ON” the breaker switch.
Phenomenon:
After the first startup or after a long period of inactivity, the
water pump does not work or stalls, the "pump" indicator light is on, and
the buzzer alarms.
Possible reason and solution:
Reason:
It is difficult to start the pump because a lot of air or dirt in the
pump or long time outage causing the lubrication decrease of the rotor.
Solution:
Cut off the power supply, open the cover board of the chiller and
pull out the rubber gasket, rotate the rotor for a while by a straight
screwdriver, then the pump can be restarted properly.
Attention:
Pump models are various from different chillers, the method
above may be not always applicable.
Phenomenon:
Water level alarm indicator flashes and buzzer beeps.
Possible reason and solution:
a)
Reason:
Water shortage in the reservoir tank, low water level.
Solution:
Filling water until level above the fluid level switch.
b)
Reason:
Fluid level switch short circuit or damage.
Solution:
Change the fluid level switch.
Phenomenon:
Water flow alarm indicator flashes with buzzer beeps
Possible reason and solution:
a)
Reason:
pump closed;
Solution:
press pump key to turn it on;
b)
Reason:
water circuit leaks;
Solution:
check the water circuit.