SHD106 type two feed water pumps, one in use and one in standby, automatically rotate and start at full pressure, and the standby pump current controls the self-throwing (pool) circuit b

This circuit is suitable for situations where the water supply to the water pump is connected to the fire pool. The liquid level sensor automatically
outputs the liquid level command to the water pump control box through the liquid level module. Manually operated by buttons on the control box panel. Under normal circumstances
, as the liquid level command changes, the two water pumps run alternately.
    In the picture, the 1~2SDJ electrode liquid level sensor adopts HJ-13 type, the 1MK liquid level module adopts HKC-1SG type,
the 2MK liquid level module adopts HKC-1SP type, the KZH water pump control box adopts HD K-22B type, 1-2SY The operating sensor
adopts HYC-1 type.