Rockwind1
Member
I recently had my "good" well on my 20 acre "ranch" start not functioning correctly,, turned out the well had started not producing as much. anyway,,,, I deepened the well to 680 ft. the static water level was sounded at 109ft deep before I deepened it ( I assume it is still the same) anyways, at 350 the well started producing 2 gpm. I went down to 680 ( expensive but my new Biden Bucks are so worthless I figured I would throw them down into a hole in the ground),, and hit hard stuff and it was still producing 2 gpm. (sad face)
this well pumps water into a 2500 gallon black storage tank. there is a jet pump inside the well house next to the black water tank which then pumps the stored water to barn and other places. there is a system that turns the submersible pump on and off depending on water level in the tank. so it should be pumping about 2000-2300 gallons in to the tank every other day depending on usage of course.
when there are horses and people there I could see using 300-700 gallons a day. maybe more. I guess I could see the new submersible down at 670 ft running for 10-18 hours every other day if it ran at 2 gpm.
the local well company that drilled wants to use a franklin 3 phase 1.5hp 5gpm motor and a franklin 1.5hp 5 gpm pump ( is how it is written on estimate)
obviously I don't have 3 phase power at the property so this is a "sub drive" modulated motor which has a soft start capability and kind of runs itself based on a pressure sensor. 1" diameter schedule 120 PVC pipe and 12 guage pump wire. the guy wants to install a 5 gpm restrictor plate or (Dole valve) because at static water level, the pump will be pumping too much out of it's pump curve. it all makes sense to me, i like the "3 phase" motor idea.
what I don't get is why not restrict it to a 2 gpm restrictor valve because otherwise, I think the pump will out-pump the water in the hole and then be running dry for a bit before it shuts off. perhaps a timer is in order. I think maybe if a 5 gpm pump is restricted to pumping 2 gpm,, is that bad for the pump? is it out of it's pump curve? I don't know.
is it not possible to get a pump in the 2 gpm range at that depth?
has anyone put a "sub-drive pump in? happy with it?
I've read that the franklin pumps are not that great and the Grundfos pump is better,, is it possible to match a Grundfos with a franklin sub drive motor?
the other factor to consider is the power coming from my main power panel at the house is about 200-250 ft away,,,running, i think, #6 for about 30ft to a subpanel, and then about 220 ft of (#8) i think down to the pump house,, then about 40 ft of 12 guage or 10 guage from the old pump control box to the casing cap.
when there are horses and people there I could see using 300-700 gallons a day. maybe more. I guess I could see the new submersible down at 670 ft running for 10-18 hours every other day if it ran at 2 gpm.
the local well company that drilled wants to use a franklin 3 phase 1.5hp 5gpm motor and a franklin 1.5hp 5 gpm pump ( is how it is written on estimate)
obviously I don't have 3 phase power at the property so this is a "sub drive" modulated motor which has a soft start capability and kind of runs itself based on a pressure sensor. 1" diameter schedule 120 PVC pipe and 12 guage pump wire. the guy wants to install a 5 gpm restrictor plate or (Dole valve) because at static water level, the pump will be pumping too much out of it's pump curve. it all makes sense to me, i like the "3 phase" motor idea.
what I don't get is why not restrict it to a 2 gpm restrictor valve because otherwise, I think the pump will out-pump the water in the hole and then be running dry for a bit before it shuts off. perhaps a timer is in order. I think maybe if a 5 gpm pump is restricted to pumping 2 gpm,, is that bad for the pump? is it out of it's pump curve? I don't know.
is it not possible to get a pump in the 2 gpm range at that depth?
has anyone put a "sub-drive pump in? happy with it?
I've read that the franklin pumps are not that great and the Grundfos pump is better,, is it possible to match a Grundfos with a franklin sub drive motor?
the other factor to consider is the power coming from my main power panel at the house is about 200-250 ft away,,,running, i think, #6 for about 30ft to a subpanel, and then about 220 ft of (#8) i think down to the pump house,, then about 40 ft of 12 guage or 10 guage from the old pump control box to the casing cap.