Pump on

[palehorse89]

Originally Posted by loisjop

+2 if you have a water pressure regulator, and you should, an it is set correctly your pump would come on every time you call for water. Why would you want to fill your fresh water tank every day or two and wear out a $300 dollar pump. Then when you really need it it's not available. Makes absolutely no sense to me! Noel

Maybe this will....... This is just pressure make up water and does not take to much from your tank on a daily basis when hooked up to city water with a lower pressure than desired, your water pump will end up with more problems from not being used than if you use it.your pumps internal pressure regulator is pre set at 55 psi, your water pressure regulator(factory or self installed) "should" be set at the Coachs water pump pressure setting of 55 psi. Now you hookup in a resort/campground that only has 35-40 psi of water pressure and your switch is off for your water pump in your Coach.......35-40 psi is all you are going to get.......if the water flow is OK with the individual from 35-40 psi of water pressure thats OK to, I perfer 55# of water pressure all the time.......As always.......to each thier own as we all have our own thoughts and reasons.

[Steve Ownby]

Originally Posted by palehorse89

Maybe this will....... This is just pressure make up water and does not take to much from your tank on a daily basis when hooked up to city water with a lower pressure than desired, your water pump will end up with more problems from not being used than if you use it.your pumps internal pressure regulator is pre set at 55 psi, your water pressure regulator(factory or self installed) "should" be set at the Coachs water pump pressure setting of 55 psi. Now you hookup in a resort/campground that only has 35-40 psi of water pressure and your switch is off for your water pump in your Coach.......35-40 psi is all you are going to get.......if the water flow is OK with the individual from 35-40 psi of water pressure thats OK to, I perfer 55# of water pressure all the time.......As always.......to each thier own as we all have our own thoughts and reasons.

No question that the on board pump should be used regularly. The idea that you will get water flow from both the pump and shore water at the same time may not be correct. There is a check valve in the incoming plumbing. When the pump is running and the pressure exceeds the pressure in the incoming line, the check valve will close stopping any potential flow into the coach from shore.

[palehorse89]

Originally Posted by Steve Ownby

No question that the on board pump should be used regularly. The idea that you will get water flow from both the pump and shore water at the same time may not be correct. There is a check valve in the incoming plumbing. When the pump is running and the pressure exceeds the pressure in the incoming line, the check valve will close stopping any potential flow into the coach from shore.

Very interesting Steve, I am wondering now after reading your post and it make sense, I might just have a problem with my check valve as when hooked up in the condition I described above I can hear my pump maybe running about 1/4 the speed than when no city water is hooked up, like it does when the ice maker fills. Got me thinking now......Thanks.
Question Steve, with this in mind is your switch off all the time also?
I have a screw in cap the seals the end of my water hose while stowed and I am thinking now if I was to un-cap my hose and turn on my water pump on and see what happens. Thank you Steve for bringing this to my attention and sorry fo the other posts on this subject, I had never thought about the check valve closing when the pump runs..... so now I have joined I believe those of you that keep the pump off when hooked to city water "unless you want 55 psi inside" when hooked to a lower pressure. Thank you!

[Steve Ownby]

Originally Posted by palehorse89

Very interesting Steve, I am wondering now after reading your post and it make sense, I might just have a problem with my check valve as when hooked up in the condition I described above I can hear my pump maybe running about 1/4 the speed than when no city water is hooked up, like it does when the ice maker fills. Got me thinking now......Thanks. Question Steve, with this in mind is your switch off all the time also?

OEM check valves are usually low quality plastic units. I replaced mine with a Shark Bite brass valve and it has been no problem for some time now. They usually fail by the valve not seating. You can test by unhooking the hose from shore water and turning on the pump. If the valve is not seating then you will get some flow back out of the hose. I usually leave my pump switch off. I stay regularly in a campground with water pressure that fluctuates between 15 and 35 pounds of pressure. I have the pump on often then so that if the pressure drops I will be using out of the on board tank.

If the park has reasonable pressure the pump shouldn't come on anyway so leaving to switch on really doesn't have a down side.

[DSL417]

Honestly, I thought Steve's assessment correct. On rare occasions, I have left the pump on with low pressure city water, but the pump certainly did not come on to augment.

I do know that our owners manual does say one thing...leave the pump off when the coach will be unattended for a while, and I also know that it will self-prime after being off for a month or more. Just some side tie-bits.

[palehorse89]

Up Date: Just went out in the garage and un-capped the water hose in the Coach and turned on the water pump.........not even a drip out of the end of the hose......
Lesson taught today, lesson remembered today............. Thanks Again Steve......!