A self-priming pump a 220 contactor a pressure switch (four terminals) an empty open how to achieve automatic control wiring
But we are generally connected to the above two points in the contactor, here to say that you want to open in the open below, mainly to express clearly, it is so simple. OK pay attention to safety ah
And then the pressure switch normally open that group, (only two terminals) one by one to open the following fire line, the other terminal connected to the contactor A1, contactor A2 then open the bottom of the zero line, on the line
Open the top of the access line, the following outlet connected to the contactor above the main contact, contactor below the main contact with water pump.
