Compressor is a very important component in the screen refrigerating machine. The quality of the refrigeration compressor is directly related to the stability of the unit. If the refrigeration compressor fails. Due to the high installation accuracy requirements of the screw refrigeration compressor, it is generally necessary to ask the factory for maintenance.
The screen chiller drying filter is an important part to ensure the normal circulation of the refrigerant. Since water and refrigerant are incompatible with each other, if the system contains moisture, it will greatly affect the operating efficiency of the screen-removing refrigerator. Therefore, it is very important to keep the internal drying of the system. The filter element inside the drying filter must be replaced regularly.
The condenser and evaporator on the screen refrigerating machine are all pressure vessels. According to the regulations, a safety valve should be installed on the high pressure end of the screen refrigerating machine, that is, the condenser body. Once the screen refrigerating machine is in an abnormal working environment, The safety valve can automatically relieve pressure to prevent high pressure damage to the human body. Therefore, the regular calibration of the safety valve is very important for the safety of the entire screen-removing refrigerator.
The cooling water of the water-cooled condenser in the screen refrigerating machine is an open circuit. When the content of calcium salt and magnesium salt in the water is large, it is easily decomposed and deposited on the cooling water pipe to form scale, which affects heat transfer. Excessive fouling also reduces the flow cross section of the cooling water, reduces the amount of water, and increases the condensing pressure. Therefore, when the water quality of the cooling water used is poor, the cooling water pipe is cleaned at least once a year to remove scale and other contaminants in the pipe. There are usually two ways to clean the condenser water pipe: one is to clean the pipeline with a special pig cleaning gun; the other is to use a special cleaning agent to circulate, or to fill the cooling water, and then replace the solution after 24 hours. Until washed.
After the long-term use of the screen-removing refrigerator, the oil quality of the lubricating oil (refrigerated oil) deteriorates, and the impurities and moisture inside the oil increase, so it is necessary to observe and check the oil quality regularly. Once the problem is found, it should be replaced in time. The replacement lubricant (refrigerated oil) label must conform to the technical data.
If there is no other special reason, the general screen chiller will not produce a lot of leaks. If a certain amount of refrigerant leaks due to improper use or after repair. It is necessary to re-add the refrigerant. Filling the refrigerant must pay attention to the label of the refrigerant used in the screen chiller.
The maintenance work of the screen refrigerating machine can avoid some faults to a certain extent, which is beneficial to effective operation and reduce the operating cost of the enterprise.
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