A one-way pump an AC contactor a pressure switch, how to pick up
In the work circuit power line FireWire → AC contactor a normally open contact → a power line of the pump → another power cord of the pump → AC contactor another normally open contact → power supply zero line operation when the pressure switch closed AC contact When the pressure switch is disengaged AC contactor is also disconnected AC contactor normally open contact to resume the state of the pump to stop working
First to say that the control circuit power line FireWire → pressure switch → AC contactor coil a head → AC contactor coil another head → power supply zero line work process when the low pressure pressure switch closed conduction AC contactor coil get AC contactor Pull the work connected to the working circuit
This control is divided into two loops and one is the control loop
