Wiring a water witch switch with a manual/off/auto panel switch

[webcraft]

The instructions only show wiring with no panel switch.



I presume red goes to red (+ve) from the panel switch, black to - ve from the panel and the tan wire to the auto wire from the panel switch?

Also... the new Johnson pump says it must not be run dry. I assume a few seconds for testing is OK?

- W

 

[VicS]

The instructions only show wiring with no panel switch.

I presume red goes to red (+ve) from the panel switch, black to - ve from the panel and the tan wire to the auto wire from the panel switch?

Also... the new Johnson pump says it must not be run dry. I assume a few seconds for testing is OK?

- W

No . I think that will mean that the pump will operate under automatic control of the Waterwitch only and only when "manual" is selected on the panel.
I don't think you will have the ability to run the pump manually if wired as you suggest

You will have to wire the pump to the panel as the panel wiring instructions direct connecting the Waterwitch (red and brown wires) in place of the float switch and the black wire to the same negative connection as the pump..

Post the details of the switch panel and it will be possible to give more confident and detailed. instructions.

Don't run the pump dry. At least make it wet inside before you test it.
Glycerine makes a good water soluble lubricant for flexible vane pumps.

 

[webcraft]

No . I think that will mean that the pump will operate under automatic control of the Waterwitch only and only when "manual" is selected on the panel.
I don't think you will have the ability to run the pump manually if wired as you suggest

You will have to wire the pump to the panel as the panel wiring instructions direct connecting the Waterwitch (red and brown wires) in place of the float switch and the black wire to the same negative connection as the pump..

Post the details of the switch panel and it will be possible to give more confident and detailed. instructions.

Don't run the pump dry. At least make it wet inside before you test it.
Glycerine makes a good water soluble lubricant for flexible vane pumps.

Thanks Vic, managed to suss it out after a bit of head scratching. Three wires from the panel switch, three from the water witch switch and two from the pump!

Red (live) from pump and switch both go to live from manual switch position.

Black from water witch and black from pump both go to - ve from panel.

Brown wire from water witch goes to live from the auto setting on the panel switch.

Anyway, it's working both manually and automatically, tested by pouring seawater into the bilge!

Didn't fit the non-return valve, but the water witch is well above the standing water left when the pump stops.

Good tip on the glycerine!

- W

 

[VicS]

Thanks Vic, managed to suss it out after a bit of head scratching. Three wires from the panel switch, three from the water witch switch and two from the pump!

Red (live) from pump and switch both go to live from manual switch position.

Black from water witch and black from pump both go to - ve from panel.

Brown wire from water witch goes to live from the auto setting on the panel switch.

Anyway, it's working both manually and automatically, tested by pouring seawater into the bilge!

Didn't fit the non-return valve, but the water witch is well above the standing water left when the pump stops.

Good tip on the glycerine!

- W

Good
Sounds right. If it works it probably is right.