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Old 09-02-2014, 04:01 PM   #15
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I'll check it out soon for sure!


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Old 09-02-2014, 04:09 PM   #16
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Also, if any air is getting in on the suction side of the pump, there will also be a tendency for the piping to make a racket. Jim


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Old 09-03-2014, 05:24 PM   #17
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Thanks so much everyone!! We love the wealth of information offered at airforums!! We solved the problem by getting the air out of the hot water heater - opened spigots, turned water pump on - that was it. ahhhhh.....so much better
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Old 09-04-2014, 12:56 AM   #18
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Our water lines start knocking really abnormally loud once in a while. For us, the water pump is secure and there seems to be no undue vibration at the pump itself.... so I've determined it's air in the water lines. Since air gravitates to the highest point in the sytem, I turn off all the water faucets, lay the shower head in the shower stall (or — if we are dry camping — into a dish pan that I then dump into the toilet) and run water through the shower for a while. It may take a couple of times doing this but it always works to get the air out.
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Old 09-04-2014, 06:44 AM   #19
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I fiddled some with it last night - think I got am some air out of hot water lines but I still think I have some - it's most notable when I use the toilet water fill/flush

I'll need to try the shower longer and I did not so the outside shower so maybe that's it


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Old 04-22-2015, 10:44 AM   #20
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I had an SOB for 15 years and the pump noise was a known quantity. My new '15 CCD pump seems louder. It is not the typical rattle sound but the revving sound and the water output is fast then slow.......
Is that a normal behavior?
Is that the "beauty of the variable speed pump?

This is our third trip out. Normally we are full hook up folks. But, I set up on the pad one foot further than my fresh water hose would tolerate! I decided that we could tough it out for the night.
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Old 10-15-2016, 12:18 PM   #21
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How exactly do I bleed the lines? I too am having the same problem in my 19' Bambi. At low speeds the water pump sounds like a jack hammer. Is there a valve I need to open under the dinette seat where the pump is located? I remember seeing drain valves near the water heater under the bed also?
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Old 10-15-2016, 02:09 PM   #22
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Quote:
Originally Posted by TinVenture View Post
How exactly do I bleed the lines? I too am having the same problem in my 19' Bambi. At low speeds the water pump sounds like a jack hammer. Is there a valve I need to open under the dinette seat where the pump is located? I remember seeing drain valves near the water heater under the bed also?

TinVenture, Check out these threads.

http://www.airforums.com/forums/f443...-148414-3.html and

http://www.airforums.com/forums/f445...ml#post1862579 that are recent comments.

I made some mods referenced in the first thread and happy with the improvement. I believe much of the noise as the late IDROBA indicated are due to the elbows and other connections banging on the floor or diamond plate. I still have some shuddering but it sounds like it is under the shower, so I'm done and have moved on.


Good luck

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Old 10-15-2016, 02:43 PM   #23
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TinVenture, Check out these threads.

http://www.airforums.com/forums/f443...-148414-3.html and

http://www.airforums.com/forums/f445...ml#post1862579 that are recent comments.

I made some mods referenced in the first thread and happy with the improvement. I believe much of the noise as the late IDROBA indicated are due to the elbows and other connections banging on the floor or diamond plate. I still have some shuddering but it sounds like it is under the shower, so I'm done and have moved on.


Good luck

bob
Thanks for the links. Looks like a lot of good info!

Jon
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Old 10-15-2016, 03:02 PM   #24
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I am not sure about the variable pumps but there are options to quiet the pumps. I have used the water pump quite a bit and the shure-flo quieting kit does help. Before the wall/water lines vibrated every time the pump pressurized the lines- two seconds-then again. Now you can hear the pump run but without the wall vibrations quieting the use down.
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