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Old 10-19-2015, 04:27 PM   #1
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Shower / Water Pump

First shower in RW today. After 30 minutes or so, the water pump would start to cycle. Is that normal? Joking about the 30 minutes, it was maybe 5 minutes. During the first 5 minutes, water pump was on continuously, after 5 minutes it started cycling.

Second, has anybody thought or actually put in a Kohler Shower system where it recycles and heats the water so you can have a powerful shower?
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Old 10-20-2015, 02:30 AM   #2
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The pump is a demand pump. It won't necessarily run the whole time the faucet is on. If the demand is less than pump output, it will cycle.

Mark
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Old 10-21-2015, 11:54 AM   #3
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We found that the pump cycled when we were showering resulting in a variation in water temperature, warm to a little cool then back again.

When I took out the internal water filter assembly behind the basement wall and replaced it with an external one I put a small pressure tank in that location and mounted it to the basement wall, it reduced the cycling and the temperature variations were also reduced.
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Old 10-21-2015, 03:13 PM   #4
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Great idea! You must have some plumbing experience...that comes in handy as an RV owner!
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Old 10-21-2015, 03:19 PM   #5
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Or you can upgrade to a pump that varies in speed as the demand increases. Have done that mod to the last 2 fifthwheel.
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Old 10-21-2015, 11:27 PM   #6
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what model pump to you upgrade to?
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Old 10-22-2015, 12:50 AM   #7
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Just purchased a FloJet Vflo Constant Pressure 5 GPM, R4426143A. On sale at CW for $199 or on Amazon for $289, but this style is very quiet in operation. Won't get it installed for another couple of weeks when we get to our Winter site.
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Old 10-22-2015, 05:43 AM   #8
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We're parked at Mesa for the winter and the shore water just filled up our fresh water tank. Called Redwood CS, was told there was not a check valve to prevent that, but further study indicates there is a check valve in the pump itself. We either have a leaky check valve, or a partial tear in the diaphragm. The pump works, but seems to cycle with no faucets open, so looks like a pump replacement is in the works.

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Old 10-22-2015, 12:05 PM   #9
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Quote:
Originally Posted by Grizzby View Post
Great idea! You must have some plumbing experience...that comes in handy as an RV owner!
I do have some plumbing experience but as I recall the 1/2 inch fittings that the water filter had are the same as those needed for the pressure tank, so it was "plug and play" as they say, no additional plumbing was required. I just unscrewed the fittings from the water filter and screwed them into the pressure tank, I did have to mount the tank to the basement wall though.
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Old 10-22-2015, 01:21 PM   #10
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Quote:
Originally Posted by Jim & Mary View Post
We're parked at Mesa for the winter and the shore water just filled up our fresh water tank. Called Redwood CS, was told there was not a check valve to prevent that, but further study indicates there is a check valve in the pump itself. We either have a leaky check valve, or a partial tear in the diaphragm. The pump works, but seems to cycle with no faucets open, so looks like a pump replacement is in the works.

Jim
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I had the same problem. I opened the taps and ran the pump for a while and it has been good since
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