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Troubleshooting of industrial chillers
With the rapid development of industrial chillers, the corresponding user population is also increasing. However, it is inevitable that some faults will be encountered during the use of chillers. Let's learn about the handling methods when chillers fail. After reading the following article, operators can take emergency measures when the machine has problems to avoid delaying production.
Next, let's learn about the causes and solutions of common faults in industrial chillers together:
1、 Common faults and troubleshooting methods of chillers:
1. Three phase power supply wiring error (pay attention to auxiliary control lines), check the wiring problem, turn on the power switch and water pump switch to blow the fuse, check for circuit short circuit fault, check the control wire and main power line, the water pump rotor is stuck, and use a screwdriver to loosen the motor rotor;
2. No fuse installed, install appropriate fuse.
3. The power indicator light is damaged, replace the electronic board.
2、 Compressor frosting
1. If the circulating water flow or valve is not open, check the water valve and all pipelines to ensure smooth flow, and install short-circuit pipelines.
2. The configuration of the circulating water pipeline is too small. Increase the diameter of the circulating water pipe to ensure normal water circulation.
3、 Compressor malfunction
1. The compressor coil is short and disconnected. Replace it with a matching compressor
2. The compressor overload protector will automatically trip, adjust the current limit of the protector appropriately within the allowable range, and press the reset button
4、 Pump malfunction
1. The coil of the water pump motor is short or disconnected. Repair the motor coil or replace the motor
2. The overload protector of the water pump automatically trips, and the current limit of the protector is appropriately increased within the allowable range. Press the reset button halfway
Five Ice formation in the circulating water tank
1. Poor refrigeration due to insufficient refrigerant or pipeline leakage. After supplementing refrigerant or leak detection, repair welding, vacuum pumping and supplementing refrigerant for poor heat dissipation. If the radiator is too dirty or the cooling water valve is not opened or opened too small, clean the radiator and fully open the valve
2. Set the temperature too high or too low to correct the set value
3. There is no circulating water in the water tank, and a circulating water circuit is short circuited between the chilled water outlet and inlet
4. The temperature control meter is out of control. Replace the temperature control meter. There is a high voltage fault and poor heat dissipation. The radiator is too dirty. Clean the radiator and the air flow is poor. Improve the ventilation conditions. If the heat dissipation fan does not work, check whether the fan motor is burned out or short circuited. Repair or replace the motor. If the high voltage engine is damaged, replace the high voltage engine
6、 The temperature display number on the thermometer fluctuates up and down
1. The temperature sensing line and temperature measuring body are contaminated, wipe the temperature measuring body clean
2. If the temperature control meter is damaged, repair or replace it
3. Poor contact of the temperature sensing wire, repair or replace the temperature sensing wire
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