Check out some similar questions!

561packrat · Aug 18, 2009, 02:50 PM

Hi all,
I have installed a 220v. Pump motor and am currently controlling it with a 220 switch. Set-up is a simple one: no tank, turn pump on and off when I want to water the garden. Is it possible to install a 110v or 24v switch/solenoid to control motor? The goal is to have a less obtrusive switch/box mounted near the hose bib and not have to run additional #10-UF cable to this location.
Thanks, packrat

hkstroud · Aug 18, 2009, 03:45 PM

Well, you could install a pressure switch on the line, just as you would on a tank. Then you wouldn't have to do anything but open the faucet.

Missouri Bound · Aug 18, 2009, 06:42 PM

561...
Yes, you could use a low voltage coil contactor to replace the switch. Then it's a matter of running a low voltage circuit consisting of a transformer and remote switch. Sounds like you already know what to do. Make sure the contactor is in a dry location and enclosed to keep critters out.

561packrat · Aug 18, 2009, 08:09 PM

Thanks Missouri, HK,
Both answers have helped. I have just enough electrical acumen to realize my limitations, but with reading and asking questions of those with more expertise, I have successfully completed a handful of projects.
Was wondering if y'all could elaborate on your answers?
Respectfully, packrat

Missouri Bound · Aug 18, 2009, 08:20 PM

If it were me, I would replace the current switch with a double pole 24v coil contactor of sufficient rating to handle the load. I would put this in a box with a 24 volt control transformer. Then run my low voltage wires to a waterproof control mounted near the hydrant / spigot. But then again, I just might put a pressure switch on the pump as HK said... then it's always ready when I am. Are you using a tank system or just the pump? If just the pump you would probably need to add a pressure tank to make the pressure switch work as it should.

561packrat · Aug 18, 2009, 08:42 PM

Hi MB, no tank, just the pump piped to the spigot. Are the 24v coil contactor and transformer, items that would be available at a Home Depot or Lowe's?
Packrat

hkstroud · Aug 18, 2009, 09:22 PM

A well pressure switch, such as shown, would turn the pump on when you opened the faucet (pressure drops on pipe just like it does in a tank). Switch turns pump off when you close faucet and pressure returns to cut off pressure.

You would have to put a tee in piping, bush the side port down to 1/4" and attach copper tubing to switch.

Wiring would essentially the same as the manual switch you have now. You are using a 240V double throw switch, aren't you?

561packrat · Aug 18, 2009, 09:35 PM

Hk, affirmative on the 240 dble. Pull switch, will look into the pressure switch/plumbing scheme. Should be do-able with my skill sets
Thanks

hkstroud · Aug 19, 2009, 04:59 AM

Look around, you may be able to find a version that simply screws on to 1/4" pipe.

Missouri Bound · Aug 19, 2009, 05:27 PM

... and the pressure switch you should definitely find at Home Depot or Lowe's... or any good hardware store.