Water Pump Swithes?

[Willbetravlin]

I don't understand the purpose and proper use of the two water pump switches. One, exterior in the access bay for the fresh tank fill/city water connection and one inside the RV in the monitor panel.

[r time soon]

Both switches power your water pump to 'on'. I believe the reason the one is by the docking station/ convenience center so that when its your first trip to a state park or other place that doesn't have city water to each site, you can turn the water pump on to say fill your empty waterheater. Then you can get the full 104 gallons in the fresh tank while you fill up. Otherwise you would use 12 gallons of tank water to fill WH. Maybe also so that when you are at the dumpstation and make a mess you can turn the pump on and use the outside shower hose and nozzle to clean yourself, your hands or spray your hose without having to go inside to turn the pump on. If we ever use the switch by the convenience center, I always turn it off when we are finished using it. That way we control the pump from inside by the switch in the command center.

Chris

[travelin' texans]

Mostly it's for winterizing so you're not running back/forth while pumping anti freeze. Seems every time I hook up to cable tv I accidentally turn the switch in the convenience center on.

[atom ant]

It would be a bit of a hassle, but you could replace the two switches with momentary lighted switches and use a relay to turn on the pump. That way you could turn the pump on or off from either place and the light on the switches would indicate whether the pump was on or off (like the new multiplex RV systems).

You could also wire them like a home 3-way circuit using double pole switches, but without indicator lights at each switch, you would never really know if you just turned it on or if you just turned it off.

[Willbetravlin]

Ha! ... or I could just learn why there are two, which is all I wanted to begin with. I'm not smart enough to do either of the things you suggested, but thanks.

[travelin' texans]

The thing to remember is if the switch is lit more than likely you've accidently turned on the switch in the convenience center. I don't think the pump will run unless both switches are on.

[Jim & Mary]

I would think the pump run would be controlled by the line pressure switch, don't think it matters which pump switch is on. When a water discharge line is opened, the pressure drops triggering the pump run.

[atom ant]

Either switch ON powers the pump. They don't have to both be on, but they do both have to be OFF to turn off the pump (off meaning it wont start when pressure drops).