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Old 01-26-2006, 03:35 AM   #1
glenwynn
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Join Date: Aug 2005
Location: Las Vegas
Posts: 34
M.O.C. #4324
Water pump loud

We have a new 2005 3650RF we have always been able to hear the water pump when using the holding tank but the noise has been acceptable.
Yesterday I ran out of water and filled the tank, since then the pump has been very loud when we run the water. any sugestion on what to do would be appreciated.

Glen and Marsha
 
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Old 01-26-2006, 04:50 AM   #2
dsprik
Montana Master
 
Join Date: Jul 2005
Location: Fort Myers
Posts: 5,933
M.O.C. #4282
Glen, you can do a search on "water pump". You are going to have to get in and start insulating the pump and lines against noise and banging on the surround wood/metal structures. Can be done and others have been successful in greatly reducing this lovely sound.

You may just have a line loose, but it could be a warranty issue, too. You should get a lot of input shortly here.

BTW, welcome to the MOC!
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Old 01-26-2006, 05:19 AM   #3
jpbcny
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Join Date: Sep 2005
Location: Cicero
Posts: 336
M.O.C. #4571
If your pump was quiet previously, it sounds like you have pump cavitation, which can be caused by several conditions:

Blockage in the inlet, causing restricted flow (when your tank ran low it may have had some debris in the water that got sucked into the intake line), if you have an inlet filter make sure it is not partially clogged.

Loose fittings, and or intake line, allowing air to enter the pump, which in turn causes cavitation.

JP
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