For sewage pumps or sewage pumps, some are equipped with knapsack floats. Because of the knapsack float, the water pump can be started or stopped according to the water level of the sewage tank. In actual operation, traditional water pump controllers cannot control and protect those sewage pumps with knapsack floats. Now our smart pump controllers A8/F and A9/F can support this sewage pump. Its characteristics are as follows :
1. Protection function: protection for overvoltage, undervoltage, three-phase unbalance, phase error, and lack of equality;
2. Support for the dual pumps for the knapsack floating ball sewage discharge:
1) Automatic rotation of main pump and standby pump
2) Failover of main pump and standby pump
3) Both pumps start at the same time
3. Support connection overflow alarm float
(Note: A8/F type has only 1, 3 features, A9/F type 1, 2, 3 have features)