Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×


Reply
 
Thread Tools Display Modes
Old 05-08-2021, 04:41 PM   #1
Junior Member
 
Join Date: May 2021
Posts: 4
NOBO no water

Stupid new guy here. I have a new 19.7. When I hook up city water it just overflows the tank and spurts out everywhere. Is there any way to make sure the division between the on trailer water system and the city water system don't comingle?
someguy is offline   Reply With Quote
Old 05-08-2021, 05:33 PM   #2
Senior Member
 
HONDAMAN174's Avatar
 
Join Date: Jun 2011
Location: Big brown desert
Posts: 2,966
Cycle your water pump. The check valve is stuck open.
__________________
2014 Stealth Evo 2850- "Woodstock"
2011 Toyota Tundra Rock Crawler TRD 5.7- "Clifford"
2013 Honda Accord Coupe V6 w/Track Pack- "Julia"

Just glad to get away
HONDAMAN174 is offline   Reply With Quote
Old 05-08-2021, 05:58 PM   #3
Junior Member
 
Join Date: May 2021
Posts: 4
Hi Hondaman,

Tried that a number of times. No luck.
someguy is offline   Reply With Quote
Old 05-08-2021, 07:16 PM   #4
Just as confused as you
 
Scrapper's Avatar
 
Join Date: Aug 2013
Location: south central Wisconsin
Posts: 5,049
There's a little more to it than just cycling the water pump.

1) Turn off the city water and open a faucet to release the pressure.
2) Turn on the wp and let the water run for a bit then turn off the faucet and let the wp run until the pump automatically shuts off.
3) Open the faucet and let the water run until the wp starts up then turn the faucet off.
4) When the wp starts again turn off the faucet and allow the wp to automatically turn off.
5) You may need to repeat #3 and #4 a couple of times.
6) Turn off the wp switch and turn on the city water.

Turning on or using the water pump while using the city water can cause the check valve in the wp to stick open. If the above procedure fails to solve your problem you can go to a hardware stores plumbing section and buy an external check valve and install it on the output side of the water pump.
__________________
Richard & Jill
2014 Flagstaff 832IKBS Classic Super Lite
2018 Silverado 1500 Crew Cab Z71 4WD All Star Edition
Camping since 1989
Car Shredder Op/Tech, Scrap Metal Recycling - retired
Everyone gets confused at some time, some are better at hiding it than others.
Scrapper is offline   Reply With Quote
Old 05-08-2021, 07:24 PM   #5
Senior Member
 
Join Date: Jan 2020
Posts: 1,380
Quote:
Originally Posted by Scrapper View Post
If the above procedure fails to solve your problem you can go to a hardware plumbing section and buy an external check valve and install it on the output side of the water pump.
If you add an external check valve it should go on the inlet side of the water pump, not the outlet side. If the internal check valve in the water pump is leaking by, and you put the check valve on the outlet side of the water pump, pressure in the pump will just bleed off through the leaking internal check valve back into the fresh water tank and the pump will cycle on and off even though no water is being used.

If you put the external check valve on the inlet side of the water pump, the internal check valve will still leak by but it will only leak by back to the external check valve on the inlet, not back into the fresh water tank. This will prevent the water pump from cycling on and off when no water is being used.
NavyLCDR is offline   Reply With Quote
Old 05-08-2021, 08:40 PM   #6
Just as confused as you
 
Scrapper's Avatar
 
Join Date: Aug 2013
Location: south central Wisconsin
Posts: 5,049
Quote:
Originally Posted by NavyLCDR View Post
If you add an external check valve it should go on the inlet side of the water pump, not the outlet side. If the internal check valve in the water pump is leaking by, and you put the check valve on the outlet side of the water pump, pressure in the pump will just bleed off through the leaking internal check valve back into the fresh water tank and the pump will cycle on and off even though no water is being used.

If you put the external check valve on the inlet side of the water pump, the internal check valve will still leak by but it will only leak by back to the external check valve on the inlet, not back into the fresh water tank. This will prevent the water pump from cycling on and off when no water is being used.
The pumps built-in pressure switch exists after the internal check valve so your correct in the assumption that it is the main function. But the second purpose of the internal check valve is to prevent city water from back flowing into the fresh water tank such as OP is experiencing. Some have added the external check valve to the pumps output without experiencing what you describe.
__________________
Richard & Jill
2014 Flagstaff 832IKBS Classic Super Lite
2018 Silverado 1500 Crew Cab Z71 4WD All Star Edition
Camping since 1989
Car Shredder Op/Tech, Scrap Metal Recycling - retired
Everyone gets confused at some time, some are better at hiding it than others.
Scrapper is offline   Reply With Quote
Old 05-09-2021, 04:53 AM   #7
Junior Member
 
Join Date: May 2021
Posts: 4
Thanks, I will give that procedure a try.
someguy is offline   Reply With Quote
Old 05-10-2021, 07:48 AM   #8
Junior Member
 
Join Date: May 2021
Posts: 4
Thanks again, that worked great
someguy is offline   Reply With Quote
Reply

Tags
water

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.



All times are GMT -5. The time now is 11:45 AM.