Reply
 
Thread Tools Search this Thread Display Modes
 
Old 03-12-2014, 08:36 PM   #1
1 Rivet Member
 
2011 30' Flying Cloud
Fort Worth , Texas
Join Date: Aug 2012
Posts: 8
No fresh water pressure from pump

Hi,

We were sanitizing the fresh water system today and ran into a problem. We open all the valves and drained the system. Next we closed all the valves, put a bleach mixture into the fresh water tank, and filled up the fresh water tank. Opened the hot water valve on the kitchen faucet and turned on the pump. The pump made noise but nothing came out the faucet . . . nothing, no water, no air . . . . nothing. Is this right? Doesn't sound good to me . . . . any ideas?
__________________

__________________
mosbymorgan is offline   Reply With Quote
Old 03-12-2014, 09:45 PM   #2
Rivet Master
 
SteveH's Avatar
 
2005 39' Land Yacht 390 XL 396
Common Sense , Texas
Join Date: Sep 2007
Posts: 5,311
Sounds like the pump lost prime. Make sure all the drain valves are closed, run the pump and pull a vacuum on one open faucet and see if you can get it to prime.
__________________

__________________
Regards,
Steve
SteveH is offline   Reply With Quote
Old 03-12-2014, 09:46 PM   #3
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 2,317
Exactly what happened to me. My water pump was original (12 years old). Apparently the chlorine solution hardened the diaphragm. I replaced it with the latest version from Amazon. It was around $70.

Take the pipe off the input to the pump. Turn the pump on and see if you can feel suction. If not you can try disassembling the pump to be sure there is no trash in the valves, but I'm betting you'll have to replace the pump.

Al
__________________

"You cannot reason someone out of a position they have not been reasoned into"

Al, K5TAN and Missy, N4RGO
2002 Classic 30 Slideout
S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
2001 Safari 25 RB Twin (Gone, but not forgotten)
WBCCI 1322, TAC FL-39, AIR 82265

Al and Missy is offline   Reply With Quote
Old 03-12-2014, 09:53 PM   #4
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 2,317
The pump shouldn't need to be primed (IMO)

The pump is not centrifugal, and has a lift spec. It should be able to lift water a foot or so from the tank.

That said, what Steve suggests might clear any trash from the valves.

Al
__________________

"You cannot reason someone out of a position they have not been reasoned into"

Al, K5TAN and Missy, N4RGO
2002 Classic 30 Slideout
S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
2001 Safari 25 RB Twin (Gone, but not forgotten)
WBCCI 1322, TAC FL-39, AIR 82265

Al and Missy is offline   Reply With Quote
Old 03-12-2014, 09:55 PM   #5
Rivet Master
 
SteveH's Avatar
 
2005 39' Land Yacht 390 XL 396
Common Sense , Texas
Join Date: Sep 2007
Posts: 5,311
I've had them do it.
__________________
Regards,
Steve
SteveH is offline   Reply With Quote
Old 03-13-2014, 12:35 AM   #6
Rivet Master
 
Mexray's Avatar
 
1978 28' Ambassador
Morada , California
Join Date: Jan 2006
Posts: 1,583
I agree, probably just an air lock in the piping between the tank and the pump...

If it was working before, I wouldn't suspect the pump itself, unless you ran it 'DRY' for an extended period when pumping out the water initially...

I've found the easiest way to 'prime' the pump was to:

1. make sure ALL valves and drains are CLOSED....
2. unscrew the hose from the hand-held shower hose...
3. open the cold water side of the shower hose valve...
4. turn on the pump's power switch...
5. pull a vacuum on the end of the hose - SUCK on that sucker..!

This should allow you to 'pull' water up into the inlet side of the pump to get that vital fluid flowing again...
__________________
Ray & Pat; Morada, CA
Mexray is offline   Reply With Quote
Old 03-13-2014, 08:39 PM   #7
Rivet Master
 
1998 30' Excella 1000
Livingston , Texas
Join Date: Jan 2014
Posts: 546
Many years ago I had added 12" diameter loops of flexible tubing to both sides of the pump to reduce transmission of pump noise. Not too long ago my pump would not prime after a de-winterization. I could see water coming up into the pex, but it couldn't quite make it to the pump. I disconnected the loop on the intake side, filled it with water, reconnected and started the pump. It promptly re-primed itself.
__________________
Siegmann is offline   Reply With Quote
Old 03-13-2014, 09:10 PM   #8
Rivet Master
 
Al and Missy's Avatar

 
2002 30' Classic S/O
Melbourne Beach , Florida
Join Date: Nov 2013
Posts: 2,317
After I sanitized my system, the pump would not pull water from a full tank. I checked the filter screen, not clogged. I pulled the filter screen off the pump and put my finger over the intake fitting while the pump was running. Nothing. I pulled the pump and disassembled it. The diaphragm was hardened and yellow. When the new pump came, I hooked it up to the same pipes the old pump would not draw water from and it worked like a champ.

Per Shurflo the pump is supposed to be self-priming up to 12 feet. I suspect as the pump ages the diaphragm hardens resulting in reduced lift and output pressure. It sounds like several have had success with priming the pump, but when I put in my new pump I had much more pressure in the shower, more than I would expect from the 5psi increase in the specified performance.

When I first posted about my problem, someone responded that I had found and fixed a problem in the making at home instead of while out camping.

YMMV, but I'd change my pump again in a heartbeat for $70 in the convenience of my driveway.

Al
__________________

"You cannot reason someone out of a position they have not been reasoned into"

Al, K5TAN and Missy, N4RGO
2002 Classic 30 Slideout
S/OS #004
2013 Dodge 2500 Laramie 4x4 Megacab Cummins
2001 Safari 25 RB Twin (Gone, but not forgotten)
WBCCI 1322, TAC FL-39, AIR 82265

Al and Missy is offline   Reply With Quote
Old 03-13-2014, 09:28 PM   #9
Rivet Master
 
TG Twinkie's Avatar
 
1974 Argosy 26
Morrill , Nebraska
Join Date: Nov 2009
Posts: 5,139
Images: 2
Blog Entries: 5
Try disconnecting the discharge hose from the pump. Run the pump until water comes out the discharge. Hook the hose back up. Open a faucet.
If the pump is good, you should get water when you turn on the water.
__________________
Knowledge: "A gift to be shared. A treasure to receive."
TG Twinkie is offline   Reply With Quote
Old 03-13-2014, 09:37 PM   #10
4 Rivet Member
 
Currently Looking...
ottawa (greely) , Ontario
Join Date: Feb 2012
Posts: 390
Blog Entries: 1
I had the same problem last spring ,the pump would not work I had a look at it and diagnosed a stuck pump pressure switch ,I tapped on it and away it went and worked fine all summer , my trailer was a year old at the time ,I'm going to have the pump and switch looked at and hopefully replace the switch under warrantee .
__________________
scamp is offline   Reply With Quote
Old 03-13-2014, 10:00 PM   #11
Rivet Master
 
Wayward's Avatar
 
2006 25' Safari FB SE
Cary , North Carolina
Join Date: Mar 2007
Posts: 803
Unless you have already checked the obvious, the filter maybe clogged with winter garden growth from the bottom of the tank.

Not that this ever happened to me or anything
__________________
2006 Safari SE FB
2000 F150 4.2L
2011 F250 6.2L
Raleigh, NC
Wayward is offline   Reply With Quote
Old 03-15-2014, 03:32 PM   #12
1 Rivet Member
 
2011 30' Flying Cloud
Fort Worth , Texas
Join Date: Aug 2012
Posts: 8
Thanks everyone for your help,

I was able to locate the water pump and disconnect it. I brought it in to my favorite local RV repair facility, and they tested it out and found that the pump was Kaput. So, I got a new one, and replaced it in my driveway where I was close to tools, the internet, my bed, and the ice chest with appropriate libations. Success in that I still have "ten little fingers and ten little toes" (one of my grandson's books) and running water. Life is good!
__________________
mosbymorgan is offline   Reply With Quote
Old 03-16-2014, 01:28 AM   #13
Rivet Master
 
Mexray's Avatar
 
1978 28' Ambassador
Morada , California
Join Date: Jan 2006
Posts: 1,583
mosbymorgan...

Couple of thoughts... I don't exactly know what 'kaput' means - motor bad, or pump part bad...?

If it's just the pump part that's 'kaput', you might want to check the manual for your old pump (can usually find on internet's Mfg'r site) to get the part number (s) of the internal pumping parts or a 'rebuild kit' - you can then have a 'backup' available for the cost of these repair parts...

Just a thought...

At least you've got the problem fixed...
__________________
Ray & Pat; Morada, CA
Mexray is offline   Reply With Quote
Old 03-16-2014, 04:50 PM   #14
Overland Adventurer
 
AtomicNo13's Avatar
 
1991 34' Excella
2009 34' Panamerica
Telluride , Colorado
Join Date: May 2012
Posts: 1,885
The ShurFlo Revolution is a great replacement pump choice
It is cheap effective Ans usually a direct fit.
__________________

__________________
AtomicNo13 is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
2008 Safari Sport 17' water pump dlb435 Water Heaters, Filters & Pumps 0 03-02-2014 08:43 AM
Fresh Water Tank and City Water ??? tr0y Fresh Water Systems 3 08-29-2011 05:49 AM
Fittings for fresh water tank cosmos Fresh Water Systems 0 06-05-2011 05:27 PM
Water pump leaking between head and motor Ezmoneybcs Water Heaters, Filters & Pumps 4 03-20-2011 07:32 AM
Convert water gravity tank to outside pressure robwok General Interior Topics 15 02-11-2011 01:00 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:30 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.