![2.Label and disconnect wires to microswitch.](/images/new-backgrounds/64342/64342127x1.webp)
Disconnect power supplied to the.unit by unplugging the power cord, or turning off the wall circuit breaker or fuse. Be aware that the other controls will have power on electric models, or electrical shock could result.
1.Remove the two screws and nuts securing the switch and switch cover.
2.Label and disconnect wires to microswitch.
3.Check for continuity on the two outside terminals. With plunger extended, the circuit should be closed, when the plunger is pushed down, the circuit should be open.
4.To replace drain switch, attach wires to new switch.
5.Position plunger and attach drain switch & switch cover with the nuts and screws.
6.Test to see if valve extension rod actuates the switch.
Listen for a click while rotating drain valve extension rod.