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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.
  • Schematic 1
    The 4-way diverter valve in the ordinary flow position:
      When the 4-way diverter valve is in the ordinary flow position, the condenser water flows positively, pushing the brush from the starting end to the other end.
  • Schematic 2
    The 4-way diverter valve in the reverse flow position:
      Through the control system control of the actuator, the state of the 4-way diverter valve is changed. When the 4-way diverter valve is in the exchange position, the direction of the water flow changes, the water flow in the condenser flows in the opposite direction, and the brush is returned to the original end position to complete the copper tube Cleaning.
  • 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.
  • End clip,Brush and Basket
    The end clips are used to prevent the brushes dropping from the baskets.The brushes are used to clean the inwall of copper tubes in heat exchanger ,the baskets which install at each end of copper tubes are used to store brushes.The brushes and baskets are made of environmental protection materials,safe and durable.
  • 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.