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Old 08-02-2021, 07:05 PM   #1
srh
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Pump running continuously

Just a bit background:

I got my Navigator in later part of November last year. The previous owner told me it was all winterized. It sat in my garage during Michigan winter months, supposedly winterized.

Before dewinterizing it a couple of months ago, I drove it and parked it in a friend's house while I did some construction on my driveway. I brought it home last Friday and wanted to start by sanitizing the water system. That is when I discovered that my Accumulator tank had raptured. I replaced the tank with one from Lowes A.O. Smith 2-Gallon Expansion Pressure Tank

I connected the expansion tank today and set its pressure to 22 lbs. When the fresh water tank was about 2/3 full, I noticed water coming out of the Gravity Fill hose. The hose is obviously old and brittle. I taped with electrical tape first then with some Etherna Bond Tape that I put over it. I think I have sealed it temporarily until I replace it.

The tank setting is in "Fresh Water Fill" position, but my pump runs continuously. I have only two positions; "Fresh Water Fill", and "City Water" The end of the hose is plugged, not connected to external water source.

Any help would be appreciated.
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Old 08-02-2021, 07:45 PM   #2
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Have you fully bled all the water lines of air? Is fresh tank filling. There may be a 3 way winterize valve open/closed before pump for sucking up antifreeze.
There are some times check valve in line to the pump and city valve as well as internal check valves in pump. They are usually pretty easy to pull apart and clean the pump as long as screws come out.
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Old 08-02-2021, 07:47 PM   #3
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Turn switch the "city Water" even though you are using the pump

"Fresh water fill' position causes pump to 'round-robin'
*Suck water up from fresh water tank then pump it back to fresh water tank via the Fill Valve


You can also Fill the fresh water tank via City Water connection vs gravity fill
Connect potable water hose...Set to 'Fresh water Fill' and turn water ON

Swap to 'City Water' position if you choose to use hose connection vs pump
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Old 08-02-2021, 07:53 PM   #4
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Quote:
Originally Posted by Old-Biscuit View Post
Turn switch the "city Water" even though you are using the pump

"Fresh water fill' position causes pump to 'round-robin'
*Suck water up from fresh water tank then pump it back to fresh water tank via the Fill Valve


You can also Fill the fresh water tank via City Water connection vs gravity fill
Connect potable water hose...Set to 'Fresh water Fill' and turn water ON

Swap to 'City Water' position if you choose to use hose connection vs pump
This
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Old 08-02-2021, 08:12 PM   #5
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Quote:
Originally Posted by Old-Biscuit View Post
Turn switch the "city Water" even though you are using the pump

"Fresh water fill' position causes pump to 'round-robin'
*Suck water up from fresh water tank then pump it back to fresh water tank via the Fill Valve


You can also Fill the fresh water tank via City Water connection vs gravity fill
Connect potable water hose...Set to 'Fresh water Fill' and turn water ON

Swap to 'City Water' position if you choose to use hose connection vs pump
Old-Biscuit: As you can tell, I am very unfamiliar with how the plumbing is set up on this coach.

I did try this - Put the Valve to City Fill, and the pump stopped running, but the water flow was minimal. Maybe it has air in lines. I will have to try it again tomorrow.

Thank you all, for posting. I appreciate your writeup!
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Old 08-02-2021, 08:22 PM   #6
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Quote:
Originally Posted by srh View Post
Old-Biscuit: As you can tell, I am very unfamiliar with how the plumbing is set up on this coach.

I did try this - Put the Valve to City Fill, and the pump stopped running, but the water flow was minimal. Maybe it has air in lines. I will have to try it again tomorrow.

Thank you all, for posting. I appreciate your writeup!
Pump running (or city water) go to same plumbing cold lines then to Water Heater for hot water lines

Turn pump ON and open faucet cold side to bleed air out of cold lines then to hot side to fill water heater and bleed air out of hot lines
*water heater could be BYPASSED so check the valving on it

House water filters clogged
Check the faucet aerator screens (on end of faucet) for clogging
Check Pump suction strainer for debris

Here is the 2005 Owners Manual---pg 279 Water System
https://big.nyc3.cdn.digitaloceanspa..._Navigator.pdf

New RVs are like a scavenger hunt...you have a list/now you get to find the stuff LOL
Have fun.......ENJOY the RV!


Here is a BASIC GENERIC RV water plumbing dirgram
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Old 08-02-2021, 08:48 PM   #7
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Quote:
Originally Posted by Old-Biscuit View Post
Pump running (or city water) go to same plumbing cold lines then to Water Heater for hot water lines

Turn pump ON and open faucet cold side to bleed air out of cold lines then to hot side to fill water heater and bleed air out of hot lines
*water heater could be BYPASSED so check the valving on it

House water filters clogged
Check the faucet aerator screens (on end of faucet) for clogging
Check Pump suction strainer for debris

Here is the 2005 Owners Manual---pg 279 Water System
https://big.nyc3.cdn.digitaloceanspa..._Navigator.pdf

New RVs are like a scavenger hunt...you have a list/now you get to find the stuff LOL
Have fun.......ENJOY the RV!


Here is a BASIC GENERIC RV water plumbing dirgram
Thank you so very much! The diagram is helpful too.
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Old 08-02-2021, 10:04 PM   #8
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Thanks to Rob Roy in post #4 for a link to the fresh water fill hose:
http://www.irv2.com/forums/f115/fres...id-350222.html

Hose https://www.ebay.com/sch/i.html?_fro...5672+&_sacat=0

Make sure you use some sealant on the hose.
Sealer https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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Old 08-03-2021, 02:58 PM   #9
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Gravity Fill Hose

Quote:
Originally Posted by vito.a View Post
Thanks to Rob Roy in post #4 for a link to the fresh water fill hose:
https://www.irv2.com/forums/f115/fre...id-350222.html

Hose https://www.ebay.com/sch/i.html?_fro...5672+&_sacat=0

Make sure you use some sealant on the hose.
Sealer https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
Vito,
Thanks for the link and the text message.

Not knowing this, I ordered this:
https://www.amazon.com/Smooth-Bor-10...a-539072991341

As you can see it is 1 1/2". So, I take it that it is not going to work, is it?
I can't see what the fitting looks like at the tank.
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Old 08-03-2021, 03:16 PM   #10
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Pump Running Continuously - Problem Solved

Quote:
Originally Posted by Old-Biscuit View Post
Pump running (or city water) go to same plumbing cold lines then to Water Heater for hot water lines

Turn pump ON and open faucet cold side to bleed air out of cold lines then to hot side to fill water heater and bleed air out of hot lines
*water heater could be BYPASSED so check the valving on it

House water filters clogged
Check the faucet aerator screens (on end of faucet) for clogging
Check Pump suction strainer for debris

Here is the 2005 Owners Manual---pg 279 Water System
https://big.nyc3.cdn.digitaloceanspa..._Navigator.pdf

New RVs are like a scavenger hunt...you have a list/now you get to find the stuff LOL
Have fun.......ENJOY the RV!


Here is a BASIC GENERIC RV water plumbing dirgram
Old-Biscuit: Per your suggestion, I turned the valve, see pic., 90 degrees to City Water Closed position. My pump worked as it should for both cold and hot water. I then connected the fresh water hose to my house supply, and I had full pressure drawing the water from my house, obviously no pump on.

The Fresh Water Fill, just fills the fresh water tank.

Thank you all for chiming in. I appreciate the help. I also mounted my $40 over flow tank from Lowes.
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Old 08-03-2021, 03:20 PM   #11
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Open your fresh water drain and put pressure in it from a garden hose, even better if you have a connector. Then run the pump.

It might be sucking a bit of air at the input and will not seal properly.

Just saying, had this happen twice on mine. Learned the hard way.
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Old 08-03-2021, 03:27 PM   #12
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Quote:
Originally Posted by YC1 View Post
Open your fresh water drain and put pressure in it from a garden hose, even better if you have a connector. Then run the pump.

It might be sucking a bit of air at the input and will not seal properly.

Just saying, had this happen twice on mine. Learned the hard way.
YC1: It looks like you are making an important point, but I don't get it. Can you elaborate a bit?

Thanks
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Old 08-03-2021, 06:11 PM   #13
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Air bubbles can be tricky. I learned that from bleeding brakes on my airplane. I could see the air bubble and pump plenty of fluid through but the darn bubble persisted. Putting a vacuum on it did the trick but if I could have moved the line to a level place or perhaps lower the bubble would have come out..

The fresh water system drain as shown in the diagram lets you drain the tank. Pushing water into that pipe may push any trapped air out of the pump system. Worth a try at least. You will need to turn the pump on of course.
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Old 08-03-2021, 06:37 PM   #14
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Quote:
Originally Posted by YC1 View Post
Air bubbles can be tricky. I learned that from bleeding brakes on my airplane. I could see the air bubble and pump plenty of fluid through but the darn bubble persisted. Putting a vacuum on it did the trick but if I could have moved the line to a level place or perhaps lower the bubble would have come out..

The fresh water system drain as shown in the diagram lets you drain the tank. Pushing water into that pipe may push any trapped air out of the pump system. Worth a try at least. You will need to turn the pump on of course.
That makes sense. Thanks for clarification.
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