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Water Pump ... Shut it off? Leave it on?


SpaceNorman

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Ok .. new to RVing here. First couple of nights out with a new (to us!) coach. We're at a State Park campground and have "electricity only" service. No big deal ... there's 100 gallons of fresh water in the tank and empty holding tanks and it's a simple overnight stay.

 

Using my water means I need to use my water pump as well. I'm in the "turn on / turn off" the water pump when it's needed camp.. My wife is leaning towards the "we're connected to shorepower, batteries aren't an issue - leave the pump on!" school of thought.

 

What does you all do? What's your logic for doing it the way you do?

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We turned it off when leaving the RV since the 100 gallons of fresh water would overflow our 45 gallon gray/black tanks if something went wrong. Friends had their very nice motorhome totaled by their cat turning on a faucet, pump on and no sewer connection led to a flood.

 

We'd turn off the city water for the same reason.

 

The 24x7 power draw from the lights in your pump switch(es) can be a bit of an issue if you are critical on battery power and they have incandescent bulbs too.

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We treated ours exactly the same way as we did the city water supply when connected to it. The only real difference in operation is that the city supply is almost infinite while your pump is limited by the size of your potable water tank. Unless you go out and turn off the water after each use when connected to city water, what is gained by turning off the pump each time? The water pump will only turn on when you use some water while operating on the tank, as it is a pressure sensing device and as long as there is pressure in the system the pump will not operate. If it cycles when no water is in use, you are loosing pressure due to a leak or a back-flow through the pump and that is a concern when on city water as well.

 

We did turn off the pump when leaving the RV for more than a short period, but we also did that same thing with a city supply. We did not turn off either after each use, or at night, or just leaving for a few hours. If you do turn off the water supply then you might also turn off the water heater just to be sure you don't operate it when dry. We operated that way for many years, nearly 12 of them fulltime and we still do that same thing in our RV today, traveling seasonally.

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We treated ours exactly the same way as we did the city water supply when connected to it. The only real difference in operation is that the city supply is almost infinite while your pump is limited by the size of your potable water tank. Unless you go out and turn off the water after each use when connected to city water, what is gained by turning off the pump each time? The water pump will only turn on when you use some water while operating on the tank, as it is a pressure sensing device and as long as there is pressure in the system the pump will not operate. If it cycles when no water is in use, you are loosing pressure due to a leak or a back-flow through the pump and that is a concern when on city water as well.

 

We did turn off the pump when leaving the RV for more than a short period, but we also did that same thing with a city supply. We did not turn off either after each use, or at night, or just leaving for a few hours. If you do turn off the water supply then you might also turn off the water heater just to be sure you don't operate it when dry. We operated that way for many years, nearly 12 of them fulltime and we still do that same thing in our RV today, traveling seasonally.

X2

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If we're boondocking or dry camping (which we do 95% of the time), we always leave the water pump on unless we leave the RV. I can't imagine that a water pump uses any power when not actively being used. Or, if it does, it would be so minor as to be almost immeasurable.

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We left ours on all the time unless we were moving out of the RV--nothing like coming in with dirty hands and having to turn on the pump before you can wash them. Besides it is the best way to learn you have a leak in your system if the pump cycles when no one is using water. I consider that to be another alarm system. :)

 

Linda Sand

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We're in the "turn it off unless you need to use the water" crowd. Comes from years of dry camping on the weekend before we retired, and the inevitable leaking backflow valve at the city water inlet we always seem to have. David

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We leave it on. Only time we would shut it off is if we were leaving for more than an hour or two. We like to be able to wash hands, flush the toilet , or whatever and whenever we want. There is no need to keep turning it on and off. You'll wear the switch out.

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Comes from years of dry camping on the weekend before we retired, and the inevitable leaking backflow valve at the city water inlet we always seem to have.

Interesting. Since the connection needs something in it to keep dirt and bugs out, we just used one of the easily available plugs that can be purchased at most any hardware department for just a few bucks... No lost water ever.

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9 years. Never turn the water pump off when using fresh water tank. Only one switch in bathroom so we aren't interested in messing with it every time we want to use it. MH has a pressurized tank.

When on a hookup we only turn off water if we are going to be gone all day

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We've had RVs in which the water pump occasionally comes on for no apparent reason. This used to annoy us, especially in the middle of the night and most especially when the water pump is under the settee you're sleeping on. So we always turned it off unless we needed water.

 

This has carried over to our current motor home which has one advantage in that the system has a pressure tank that will feed a couple of liters of water to a faucet even without the pump turning on. It's enough to flush the toilet after going #1 quietly; no pump noise until one of us turns the pump back on in the morning.

 

We have two switches. One in the bathroom and one in the galley.

 

WDR

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