Guide to chemicals for air-conditioning water systems: operating methods for strippers, descalers, pre-filming agents, etc.

The water system mainly consists of cooling water system and chilled water system. After long-term operation, the water system is prone to problems such as scaling, corrosion, biological slime, and bacterial and algae growth, which seriously affects the heat exchange and refrigeration efficiency of the refrigeration equipment. To this end, chemical cleaning and descaling of the water system and daily water quality stabilization treatment need to be carried out regularly.

This article will introduce in detail the functions and usage of several cleaning agents commonly used in the refrigeration industry.

Refrigerant equipment cleaning agent
Refrigerant equipment cleaning agent is friendly to refrigeration system maintenance personnel and can be effectively used to clean carbon deposits, asphalt, oil and various lipids. It is a multi-purpose internal cleaning agent for refrigerant pipes. It can effectively solve the problems of internal cleaning of large complex systems and low-temperature systems.

Instructions for use: Recover all the refrigerant in the system and establish a closed loop (it is recommended not to include parts such as dryers and expansion valves that are easy to cause blockage. For complex systems, a single system can also be cleaned, such as the evaporator or condenser, which can be cleaned independently). Disconnect the compressor and use a pump to circulate the refrigerant equipment cleaning agent in a closed circuit throughout the system for at least 30 minutes. Then drain the refrigerant equipment cleaning agent out of the system, and finally flush the system with nitrogen until all the refrigerant equipment cleaning agent is discharged.
Fin cleaner
Fin cleaner can remove grease, oxides and accumulated dirt. It is suitable for aluminum fins of evaporator and condenser plates, air filters, and equipment casings. It has a good effect on various oil stains on fins.

Instructions for use: Spray clean water to wet the fins first, dilute it with 3-7 times of water depending on the cleanliness of the equipment, then turn off the motor fan, spray with a pressure sprayer, wait for 3-5 minutes, and then clean the foam and residue with clean water.

Shanghai KUB Refrigeration Equipment Co., Ltd.

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