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Old 08-09-2005, 06:27 AM   #1
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Just purchased a 2004 Newmar Kountry Star, have noticed that the water pump surges (does not stay at constant pressure) when it is on and the water temp changes each time it does so. Notice it more in the shower. Any suggestions.

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Walt
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Old 08-09-2005, 06:27 AM   #2
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Just purchased a 2004 Newmar Kountry Star, have noticed that the water pump surges (does not stay at constant pressure) when it is on and the water temp changes each time it does so. Notice it more in the shower. Any suggestions.

Thanks
Walt
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Old 08-09-2005, 08:16 AM   #3
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Walt, Welcome to irv2
Check your screen filter on water pump maybe plugged up or is there enough water in tank or valve from tank may not be open all the way. Also make sure the bypass valve is closed all the way on your hot water tank. Ask also to join the "Newmar Owners Forum" its free for the asking. "007"
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Old 08-09-2005, 08:46 PM   #4
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Oldtexman:
...have noticed that the water pump surges (does not stay at constant pressure) when it is on and the water temp changes each time it does so. Notice it more in the shower. Any suggestions?
</div></BLOCKQUOTE>
Another "accessory" you should consider is adding one of these [http://www.campingworld.com/browse/s...=2290&src=FPC] to your water system. It should maintain constant pressure for you.
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Old 08-10-2005, 04:56 AM   #5
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Unless you have one of the new computerized pumps, surging is not all that unusual at some flow rates. The pump comes on at full power when the low pressure limit is reached and then shuts off when the high limit is reached. If the pump output rate exceeds the demand, the pump switches on & off and the pressure "surges" between the high and low limits. But if the pump stays on and the observed water pressure at the showerhead changes (surges), there is a problem somewhere.

The fact that you get a temperature change makes me suspect that you have crossover between hot and cold lines somewhere. One common cause of this is a mixing faucet such as an outside shower. If the water valves for an outside shower are open and the water merely turned off at the shower head, cold and hot will mix through the valves. Always turn off the outside shower at the faucet when finished using it. As others have mentioned, a partially open water heater bypass valve can also cause mixing of hot and cold.
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