1. Differential pressure discharge: When the impurities accumulate to a certain amount, use the differential pressure signal between the cooling water inlet and outlet pipes to backwash the sewage, that is, the electric contact pressure gauge turns on the control signal, and the control mechanism opens the electric blowdown valve, and the electric reducer will It runs at a speed of 3-6 rpm, and is discharged into the cooling water outlet pipe through the sewage pipe and the sewage discharge valve, and is cleaned up for about 5-10 minutes. When large debris is present and the filter cannot be in place, the electric device should be operated in the opposite direction to flush debris.
2. If necessary, the user can set the time of sewage discharge, set the cleaning and sewage discharge time within 0-99 hours, generally set to 12 hours for sewage discharge, and the time setting can be adjusted according to the water quality of the power plant. That is, the set time is started to start the electric reducer to reverse the exhaust valve, and the reverse backwashing is sequentially performed. Until the backlash of all the chambers is completed, the electric device stops working, the electric recoil valve and the electric blowdown valve are closed, and the sewage discharge work is completed.