The chiller is composed of a chiller and other equipment, so what is the difference between the repairs of the two? We can take a look at it together, maybe it will not be applied in the future.
For the screw chiller, first check and clean the suction filter of the equipment. Remove the cover of the suction filter screen, take out the spring that compresses the filter screen, and put the filter screen back in its original place after being taken out and cleaned with kerosene. The next step of the chiller is to check the suction valve and exhaust valve, which is also very simple. After opening the cylinder head, take out the exhaust valve group and check the exhaust valve and suction valve; for the suction valve and exhaust valve, it is usually checked whether the valve plate is broken and whether the valve spring is broken; If the sealing surface is defective, it must be ground.
Then is the replacement of the chiller cylinder liner, but the premise is that the seal of the suction valve seat cannot be repaired after damage. When the bearing bush is worn to a clearance greater than 0.25 mm, it must be replaced with the connecting rod big end bushing, and it cannot be used immediately. Generally, when removing the shaft seal, do not loosen or move the compressor or motor.
But for the chiller, the first thing to look at is that after the chiller is turned on, the rotation of the fan is abnormal. If there is a forward rotation, it means that it is normal. If it is a reverse rotation, it means that the power supply wiring is reversed, and the phase sequence must be replaced before starting. We do not arbitrarily change the setting values of various protection devices of the screw chiller to avoid the resulting failures.
The chiller cannot be shut down by cutting off the mains power unless there is an emergency. To keep the machine room clean and well ventilated, regularly clean the condenser to ensure the normal and stable operation of the unit.
Whether it is a chiller or a chiller, it is necessary to ensure that the machine is stopped before repairing the equipment. This is still for safety reasons.
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