Cooling circulating water machine uses cooling liquid (commonly used cooling liquid is water, low temperature commonly used synthetic cooling liquid, such as ethylene glycol aqueous solution, etc., hereinafter referred to as cooling liquid or "water" for short) as the heat transfer medium, and other instruments that need to be cooled Or the heat generated by the equipment is transferred out, and the heat is radiated to the outside of the equipment through the refrigeration system, thereby ensuring that the equipment operates within the normal temperature range. The closed medium circulation is formed between the device and the equipment by the pressure of the water pump in the device, and the temperature of the medium is detected by the temperature sensor to control the refrigerator.
When the cooling water circulation machine has some failures, we can often solve the problem according to some specific phenomena
Phenomenon 1: When the power is turned on for the first time, the power switch indicator does not light, and the pump does not rotate.
——Possible causes and solutions:
The air switch (circuit breaker) above the power inlet is in the "OFF" state.
The problem can be solved by putting the air switch to the "ON" state.
Phenomenon 2: When the pump is turned on for the first time or not turned on for a long time, the pump does not rotate or is blocked, the "pump normal" indicator lights, and the buzzer alarms.
——Possible causes and solutions:
There is a lot of air or fouling inside the water pump, or the long-term use of the water pump will cause the lubrication of the rotor to drop, making the water pump difficult to start. Need to unplug the power, open the cover of the device, remove the rubber disc directly behind the motor rotor, use a flat-blade screwdriver to move the motor rotor to the left and right, and the motor can restart. .
Note: The type of water pump used in different devices is different, and the above method of disassembly and adjustment of the water pump may not be applicable.
Phenomenon: The water level alarm indicator flashes, and the buzzer alarms.
——Possible causes and solutions:
a) The water tank is short of water and the water level is too low. Add water to fill the liquid level switch;
b) The level switch is short-circuited or damaged. Replace the level switch.
Phenomenon 3: The water flow alarm indicator flashes and the buzzer alarms.
——Possible causes and solutions:
a) The pump is not turned on. Press the button to turn on the water pump;
b) The water flow circuit is open. Check the circuit;
c) The pump is damaged. Replace the water pump.
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