In the refrigeration industry, the chiller is divided into two types: air-cooled chiller and water-cooled chiller. According to the compressor, it is divided into a screw chiller and a scroll chiller. Therefore, the chiller can have a Water Cooled Scroll Chiller, air cooled scroll chiller and water cooled screw chiller, air cooled screw chiller; temperature control is divided into low-temperature industrial chiller and room temperature chiller, the temperature of the normal temperature unit is generally controlled within the range of 0 degrees -35 degrees. The temperature control of the low temperature unit is generally between 0 and -100 degrees. So how do you clean the chiller in your daily life?
The main cleaning of the freezer includes a compressor, a condenser, an evaporator, and an oil separator. For the screw compressor of the air-cooled screw chiller and the Water Cooled Screw Chiller, the pipeline cleaning requirements: the oil of the compressor refrigeration oil turns brown, the oil quality is turbid, the smell of the gas can be burnt, and the inside of the compressor The motor winding resistance value stops detecting. If the resistance between the windings and the casing is normally well insulated, it is necessary to replace the refrigeration oil and clean the pieces.
Air Cooled Scroll Chiller
Regarding the purification in the ballast pipeline, it can be cleaned with a
cleaning agent. Before cleaning, the refrigerant in the refrigerant system is
discharged first, then the compressor is removed, and the refrigeration oil is
poured out from the process pipe. In the cleaning operation, the compressor is
firstly used. Remove the filter with a dry filter, then disconnect the capillary
(or expansion valve) from the evaporator, connect the evaporator to the
condenser with a pressure-resistant hose, and use a hose to clean the equipment
and compressor The suction and exhaust pipes are firmly connected.
Equipment, pumps, tanks, filters, and various valves used for cleaning. The cleaning process is as follows. First, the cleaning agent is injected into the bath, then the pump is started to operate, and the cleaning is started. Stop by pressing forward and reverse several times during cleaning. Until the cleaning agent is not acidic, it is only necessary to cycle for about 1 hour for mild purification. For serious purification, it takes 3-4 hours. If the cleaning is long, the cleaning agent is dirty, and the filter is also infested and dirty. The cleaning agent and filter should be replaced and stopped. After washing, the cleaning agent in the reservoir is recovered from the liquid tube. After the cleaning is completed, the nitrogen blowing and drying treatment should be stopped in the refrigeration pipeline.
Box Type Water Cooled Scroll Chiller
Fragmentation of water includes the cleaning of the cooling water and the cleaning of the chilled water. The cleaning of the cooling water is mainly to clean deposits such as scales, biological slime, corrosion products, etc. of the cooling tower, the inner wall of the cooling water pipe, and the heat exchange surface of the condenser.
The chiller cleaning is mainly to clean the exterior of the evaporator heat exchanger, the inner wall of the chilled water pipe, the inner wall of the fan coil and the biological slime and corrosion products outside the air conditioning system.
1.Physical cleaning The main cleaning methods are: use a wire brush to pull the brush; use a common scraper to scrape; high-pressure water jet cleaning. And these methods are secondary to water-cooled condensers and shell-and-tube evaporators. High-pressure water jet cleaning, this method can also be used to clean equipment such as pipes. When cleaning the heat exchanger, the ends of the heat exchanger must be removed, and the heat exchange tubes are washed one by one with a high pressure water gun. For pipes, high pressure water jets with flexible tips can be used for cleaning.
2. Chemical cleaning Chemical cleaning is a type of method in which the deposits in the equipment to be cleaned are dissolved, loosened, scattered or peeled off by the action of chemical agents. Chemical cleaning is also commonly used in conjunction with physical cleaning. The circular method is one of the most common methods of application. The method of temporarily cleaning the tank is used to make the cleaning equipment form a closed loop, the cleaning liquid is continuously circulated, and the accumulation layer and the like are continuously dissolved and scattered by the chemical action and the flushing action of the new cleaning liquid.
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