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The parking function of walk-in cooler refrigeration device (3)
The parking function of walk-in cooler refrigeration device (3)
In the following situations, the walk-in cooler parking process should be performed.
①The oil pressure is too low or does not rise.
②When the oil temperature has exceeded the allowable value.
③Severe refrigerant leakage at the shaft seal.
There is a knocking sound in the cylinder.
⑤ More severe wet compression.
⑥Exhaust pressure and temperature are too high.
⑦The energy adjustment or unloading mechanism fails.
⑧The lubricant is dirty.
⑨ Cylinder napped or connecting rod big end bearing bites .
⑩ conveyor belt slippage, etc.
wet compression fault shutdown operation. The wet compression phenomenon occurs in the refrigerator because the walk-in cooler refrigerant liquid or incompletely evaporated liquid particles enter the cylinder for compression. This phenomenon is called wet compression or wet stroke. In some places it is called a tidal car, and in severe cases it is also called Liquid hammer phenomenon. If wet compression occurs during operation, it should be dealt with separately according to its cause and procedure. For light cases, close down or close the suction valve and expansion valve: For heavier cases, close the suction valve and throttle valve immediately: For severe cases, stop immediately, close the expansion valve, suction valve, and discharge valve, and release the crankshaft The refrigerant in the tank or the refrigerant in the crankcase and cylinder may be extracted by other refrigerators, and the refrigerant oil shall be replaced at the same time.
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