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# Influent Pumps control
Had to do a little wire tracing to figure out what the 24vdc power supply does.
The 24V negative runs in series through the motor temp switch, three phase field disconnect, and stop button. Then lands on the negative of relay R1. Positive of R1 runs direct to the power supply.
![[Influent_Pumps_control_1000013189.jpg]]
![[Influent_Pumps_control_1000013188.jpg]]