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Hi--
This is my first post, I've recently retired and have more time than money so I'm installing my own plumbing on a well for a shower house. My system is a Grundfos SQF-11 submersible pump, a Wellmate WM-14 pressure tank (precharged to 40 psi) and a 20-40 psi Shur-Dri Pressure Switch. The Grundfos is operating on AC. When I turn on the pump with the main drain valve fully open (the drain valve on the large brass "T" fixture connected to the pressure tank with outlets for the pressure meter and switch), the pump runs continuously with 9 gpm flow and about 15 psi showing on the pressure meter. When I slowly close down the drain valve, the pressure increases and shuts off at 40 PSI as expected. However, when I turn the drain valve completely off and turn on the shower valve, the pressure gauge drops, the pump turns on, water starts to come out but the pressure rises very quickly to 40 psi and the pump and water shuts off. If I leave it on like this, it keeps cycling-- jumping to the 40 psi shut-off pressure quickly after the the pump turns on. To my novice thinking, it seems like the pressure tank isn't working correctly because the water does not come out immediately when I open either valve. I'm not sure what to try next. All of the equipment is new. Rob D.
This is my first post, I've recently retired and have more time than money so I'm installing my own plumbing on a well for a shower house. My system is a Grundfos SQF-11 submersible pump, a Wellmate WM-14 pressure tank (precharged to 40 psi) and a 20-40 psi Shur-Dri Pressure Switch. The Grundfos is operating on AC. When I turn on the pump with the main drain valve fully open (the drain valve on the large brass "T" fixture connected to the pressure tank with outlets for the pressure meter and switch), the pump runs continuously with 9 gpm flow and about 15 psi showing on the pressure meter. When I slowly close down the drain valve, the pressure increases and shuts off at 40 PSI as expected. However, when I turn the drain valve completely off and turn on the shower valve, the pressure gauge drops, the pump turns on, water starts to come out but the pressure rises very quickly to 40 psi and the pump and water shuts off. If I leave it on like this, it keeps cycling-- jumping to the 40 psi shut-off pressure quickly after the the pump turns on. To my novice thinking, it seems like the pressure tank isn't working correctly because the water does not come out immediately when I open either valve. I'm not sure what to try next. All of the equipment is new. Rob D.