Pipeline Cleaning Requirements of Screw Chiller System

 If the chiller is used for too long, some impurities will inevitably exist inside, which will affect the refrigeration system. In order to ensure the stable cooling effect of the chiller and prolong the service life of the chiller, regular maintenance of the chiller is required. So, what are the requirements for pipe cleaning of screw chiller system?

Observe that the oil color of the compressor refrigerating oil of the screw chiller turns brown, indicating that the oil has been turbid, check whether the smell has a burnt smell, and check the resistance value of the motor winding in the compressor. If the resistance between the windings and the casing is normal and well insulated, the refrigerating oil and cleaning system must be replaced.

Semi Closed Screw Type Chiller

For the contamination in the system pipeline, the cleaning agent can be used to clean it. Before cleaning, first discharge the refrigerant in the refrigeration system, then remove the compressor, and pour the refrigerant oil from the process tube. During the cleaning operation, first, remove the compressor and filter drier, then disconnect the capillary tube (or expansion valve) from the evaporator, use a pressure-resistant hose to connect the evaporator to the condenser, and use another A hose to firmly connects the cleaning equipment with the suction and exhaust pipes of the compressor. The equipment used for cleaning includes pumps, tanks, filters, dryers, and various valves.

The cleaning process is as follows: first, inject the cleaning agent into the liquid tank, then start the pump, make it run, and start cleaning. When cleaning, press forward and reverse many times. Until the cleaning agent does not show acidity, for mild pollution, it only needs to circulate for about 1 hour. For severe pollution, it will take 3-4 hours. If cleaning for a long time, the cleaning agent is dirty, the filter is also clogged and dirty, you should replace the cleaning agent and filter before proceeding. After washing, the cleaning agent is dirty and the filter is clogged and dirty. The cleaning agent in the reservoir must be recovered from the liquid pipe. After cleaning, the refrigeration pipeline should be purged with nitrogen and dried.

The above information is provided by flooded type screw type chiller factory.


评论

发表评论

此博客中的热门博文

Commercial Chiller Repair and Maintenance Tips

图片
Commercial chiller  repair can be an expensive and time-consuming process if you don't know what you're doing. However, with this guide, you will learn how to properly diagnose and repair your industrial chiller to get it working at full capacity again.   Commercial Chiller Repair and Maintenance Tips Commercial chiller repair is an important part of any chiller owner's job. There are many reasons why industrial chillers fail, but they can be prevented with a few simple steps.   Perform routine maintenance on a quarterly basis. Your  chiller manufacturer  should provide you with a chiller checklist as a guide. If optional, you should join your customer's preventive maintenance program. Always use a licensed HVAC company for maintenance and repairs, and keep maintenance and repair records for future reference.   Inspect the heat transfer fluid to ensure it is free of debris and properly rated for ambient conditions and process fluid temperature. Then, check the "Y&q
阅读全文

What Do You Know about Air Cooled Chiller?

图片
  The   chiller refrigeration system   consists of four basic parts, namely compressor, condenser, throttle and evaporator. The four major parts are connected by copper pipes in a certain order to form a closed system, and the system is charged with a certain amount of refrigerant. The role of industrial chillers is mainly to provide chilled water to various industries to cool down the equipment, to improve the accuracy of the product, improve the role of production efficiency. After the user has purchased and installed the industrial chiller, it is time to observe its actual operation. So what are the operating parameters of the industrial chiller? Its operating parameters are mainly voltage, current, power, temperature, pressure, flow rate, liquid level, concentration, etc. Voltage: The supply voltage must be in line with the equipment voltage, too high or too low will affect the safe operation of the chiller. Current: There are industrial chillers nameplate current and the actual op
阅读全文

How to Deal With the High Pressure Alarm Caused by the Blockage of the Condenser?

图片
  Condensers of   screw chillers   are extremely easy to foul and reduce heat exchange efficiency, so it is very important to clean the condenser of screw chillers. First, reasons for the cleaning of the condenser of the screw chiller: The condenser of the screw chiller is very easy to scale. Normally, daily water treatment should be done during the cooling period in the summer. Otherwise, if it is operated in a high hardness water environment, the inorganic salt dissolved in the water in the circulating water system will rise with the temperature. High crystal precipitation, scale formation on the tube wall of the condenser heat exchange surface, resulting in reduced heat exchange efficiency. At the same time, if the hard scale increases, the energy consumption will increase. When the hard scale is 1mm thick, it will increase by 6%-8%. In addition, due to the dirt, silt, and humus in the water, the biological slime formed by bacteria, algae, and other microorganisms and their secretio
阅读全文