PowerVac® P Relay Test and Repair

Power is disconnected from the Contactor when the relay is energized by the top float switch closing (water level reaching top float switch). The PowerVac® electrical system can be checked by pressing the test button on the side. If the unit shuts down, the rest of the electrical system is functioning properly.

PowerVac P Relay

If the motor is not shutting off when the top collection tank float is actuated, check relay by pressing the Test Button. If the motor is not running, By-Pass Relay to check operation.

Caution

When testing components with power on, use care to prevent electrical shock.

PowerVac P Relay

1.Turn power off.

2.Remove electrical cover. Refer to: Electrical Cover.

3.Verify all wire connections are secure to relay.

4.Turn power on.

5.Push in test button on side of relay, if unit shuts down, relay is bad.

If the unit does not shut down when top float is activated, but shuts off properly when the relay test button is pressed, the coil in the relay is likely defective, barring any other wiring issues. The light on the relay is only an indicator that there is power to the coil.

PowerVac P Relay

1.Turn power off.

2.Disconnect blue wire from Relay(2) and connect wire to left side of Relay(6) which has a direct feed from the transformer.

3.Turn power on.

Test Results Status Required Action
Unit starts when relay is by-passed. Thumbs down

Replace Relay.
With the top collection tank float actuated, unit only shuts off when relay test button is depressed. Thumbs down Replace Relay.

PowerVac P Relay

1.Disconnect power at on/off switch and main power supply box.

2.Remove electrical cover. Refer to: Electrical Cover.

3.Unplug relay from base.

4.Plug in new relay. Restore power. Push in test button to verify unit shuts down after turning power on.

5.Install electrical cover.