how should fresh water pump sound

[bruce]

Just purchased a 2001 Hunter 290 and am not certain the fresh water pump is behaving correctly. When I turn the system on, I can hear it begin to pressurize the lines with a steady rapid pulse. The pulse then slows and there is a longer time between pulses. It never reqally stops pulsing, however, even when no water is being released from the faucet. When the water faucet is opened, the pulse quickens and ,almost, seems to hammer. Is this how the system is supposed to sound when operating correctly?

 

[JHS]

Clean the filter

Before you try anything else, take out and clean the filter. It may be taking so long to fill the hot water tank that it is not ready to go off. Perhaps the hot water tank was bypassed for haul out and never reconnected.

 

[Andy Komorowski]

Same thing happened to me

My water system pump sounded exactly like yours. On our new Hunter 326 there is a pressure adjustment screw on the water pump, under a rubber capat the end of the pump motor. A simple twist of a screw driver was all it took.Andy, Erie PA

 

[sam Lust20932]

Sounds air bound to me

The supply hose from the tank to the pump draws from the bottom of the tank, runs up, and then down on it's way to the pump. Remember this hose is actualy under slight vacuum. Air could be entrapped in it or the chambers of the pump. Best way I've found to eliminate this is to open up all the faucets all the way and let her rip. Usualy when all spitting has stopped and it runs clear it's done.The other possibility is an air leak in the supply hose. As I recall it produces similar symptoms. My problem turned out to be a leak in the aluminum dip tube in the tank itself. Corrosion over 20 years. To prove it, I ran a known good hose from the pump directly to the bottom of the tank and turned the system on. I have a view/cleanout port into the tank which makes this a lot easier. A beckson 6" screw off port with a clear cover. Once I knew the aluminum dip tube was bad I made up a new one out of standard PVC plumbing pipe, drilled a new hole in the top of the tank and glued it in place with copious amounts of silicone. I prefer G E Silicone II, white, from my local gigantic orange warehouse home center. The aluminum tube was simply capped off and abandoned in place. The fix has been working fine for several seasons.