Recirculating cooler
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The definition of the 12 pins of the
aviation plug:
Pin 1 & 2: water flow signal output,
which function with normal water
flow and disconnect with abnormal
water flow.
Pin 3 & 4: water level signal output,
which function with normal water
level and disconnect with abnormal water level.
Pin 5 & 6: temperature signal output 1, it is customized.
Pin 7 & 8: temperature signal output 2, it is customized.
Pin 9: control input (+) port for receiving of contact signals or level
signals (15mA/the resistance provided by the client side). Start the unit
with high level or when connected, stop the unit with low level or when
disconnected.
Pin 10: control input (-) port.
Pin 11 & 12
：
reservation.
Chapter IV Trouble Shooting Guide
Phenomenon:
the unit starts with the power supply switch indicator not on
and pump not working for the first time operation;
Possible reason and solution:
Reason:
air break switch on the power supply incoming end is OFF state.
Solution:
turn ON the air break switch.
Phenomenon:
The pump can not work or work properly with the Pump
indicator on but buzzer beeps.
Possible reason and solution:
Reason:
it is difficult to start the pump because of 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 unit and
pull out the rubber gasket, rotate the rotor for a while by a straight
