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    Working Process:
    When the backwash function of the heat exchanger unit is not turned on, the 4-way diverter valve is located in the ordinary water flow working position, electric 3-way valve closes the filter bypass, at this time the water flow of the secondary side of the plate heat exchanger is in the ordinary direction.When the backwash function of the heat exchanger unit is turned on, the 4-way diverter valve is located at the exchanged
    working position. The electric 3-way valve opens the filter bypass and closes the main road. At this time, the water flow of the plate heat exchanger is reversed, and the impurities in the heat exchanger are flushed by the reversed water flow to the filter bypass.After filtering, the impurities sink in the filter, and finally the impurities are removed by washing the filter.The cleaning function is implemented by a fully automatic control system, and the cleaning time can be based on the actual situation of the customer.The situation is adjusted, convenient and fast, and can achieve unattended and remote control.
  • Brush
    Each copper tube will be equipped with a propeller design brush. The bristles are made of special wear-resistant nylon. The propeller type design ensures that the brush rotates during cleaning in the copper tube to achieve a good cleaning effect. The stainless steel metal ensures that the brush reduces resistance and never rusts during cleaning.
  • Basket
    Designed for low water pressure differentials, mounted on both sides of the copper tube, each brush basket has an end cap for controlling the position of the brush and for maintenance and replacement.
  • 4-way diverter valve
    The 4-way diverter valve, as an important part of the whole cleaning system,RECHI company has devoted years of effort on research and development,lots of technologies on it have gained patents.
  • Control System
    RECHI intelligent control system has the following advantages:
    1. Multiple protection functions: The system has over-torque protection, the valve is abnormally self-protecting, and has a function switch that opens and closes in place to prevent the operation from exceeding the limit position;
    2, 24-hour control: You can freely set up eight time slots every day, and clean it regularly;
    3. Interlocking with the air conditioner host: The system can automatically clean the system under the condition of stopping or low load to ensure the safe operation of the air conditioning system;
    4, the operating data can be archived: historical alarms and operational data can record the query, and retain the archive;
    5. There is an alarm switch: after the system has an abnormality, the alarm dry contact signal will be output;
    6, wireless control function: can use wireless remote terminal for online monitoring and control.