Installation is a 6 year old 22SQE15-220 with a CU301 (set at 60psi) and 2gal tank and 180ft well.
Main use is to supply 10gpm to my heat pump for heat and a/c plus normal household water use and some garden irrigation.
Originally the well was rated at 40 gpm and pump would provide 18 -20 gpm continuous. Done so over the last 15 years using this pump plus an earlier pump)
Lately the pump will not yield more than about 11 gpm at full constant pressure of 60psi.
I have let the well recover (pump off) overnite but in AM pump is immediately limited to 11 gpm. So I don't believe there is a shortage of water in the well. (In the past the water level has been at 40ft down in this 180ft well. Havent measured it recently). Pump is also running for hours to heat house.
The CU301 lites are all normal with the max speed lite on solid at 10+ gpm and 60psi. Sensor is clean and exactly at specified 5.8vdc at 60 psi. Pump drain is approx. 7-8A at max speed (measured on 60A scale of clip-on meter..so +/- couple of amp accuracy).
Here are some measurements I made:
Set 40psi & 8gpm = 4Amps, Actual pressure 38psi, (max speed lite off)
Set 40psi & 9gpm = 6-7A, 37psi, (max speed lite off)
Set 40psi & 10 -11gpm = 7 - 8A, 30psi, (max speed lite on)
Set 60psi & 9gpm = 7A, 59psi, (max speed lite off)
Set 60psi & 10gpm = 7-8A, 58psi, (max speed lite on)
Set 60psi & 10 - 11gpm = 7 -8 psi, 43psi, (max speed lite on)
Set 70psi & 10gpm = 7 - 8A, 59psi, (max speed lite on)
So it appears that the maximum flow rate is just above 10gpm at any pressure setting, and that the CU301 is changing to max speed to get from a lower flow to the 10gpm.
My interpretation of all this is that the well has enough water, the CU301 is operating OK, and that something is restricting the pump output (pump clogged, faulty, etc?)
Does anyone agree with this conclusion or suggest other possibilities?
Do I need to do any more to isolate the problem to the pump or the CU301?
I would love to have your input before deciding to have the pump guy in to pull the pump......its winter here!
Thank you!
Main use is to supply 10gpm to my heat pump for heat and a/c plus normal household water use and some garden irrigation.
Originally the well was rated at 40 gpm and pump would provide 18 -20 gpm continuous. Done so over the last 15 years using this pump plus an earlier pump)
Lately the pump will not yield more than about 11 gpm at full constant pressure of 60psi.
I have let the well recover (pump off) overnite but in AM pump is immediately limited to 11 gpm. So I don't believe there is a shortage of water in the well. (In the past the water level has been at 40ft down in this 180ft well. Havent measured it recently). Pump is also running for hours to heat house.
The CU301 lites are all normal with the max speed lite on solid at 10+ gpm and 60psi. Sensor is clean and exactly at specified 5.8vdc at 60 psi. Pump drain is approx. 7-8A at max speed (measured on 60A scale of clip-on meter..so +/- couple of amp accuracy).
Here are some measurements I made:
Set 40psi & 8gpm = 4Amps, Actual pressure 38psi, (max speed lite off)
Set 40psi & 9gpm = 6-7A, 37psi, (max speed lite off)
Set 40psi & 10 -11gpm = 7 - 8A, 30psi, (max speed lite on)
Set 60psi & 9gpm = 7A, 59psi, (max speed lite off)
Set 60psi & 10gpm = 7-8A, 58psi, (max speed lite on)
Set 60psi & 10 - 11gpm = 7 -8 psi, 43psi, (max speed lite on)
Set 70psi & 10gpm = 7 - 8A, 59psi, (max speed lite on)
So it appears that the maximum flow rate is just above 10gpm at any pressure setting, and that the CU301 is changing to max speed to get from a lower flow to the 10gpm.
My interpretation of all this is that the well has enough water, the CU301 is operating OK, and that something is restricting the pump output (pump clogged, faulty, etc?)
Does anyone agree with this conclusion or suggest other possibilities?
Do I need to do any more to isolate the problem to the pump or the CU301?
I would love to have your input before deciding to have the pump guy in to pull the pump......its winter here!
Thank you!