Way Off Topic....Plumbing Help

#1
The house plumbing...not mine!

Recently, I noticed my shallow well Gould J5 pump would cycle with no demand. I checked all of the sources and did not see any nefarious leaks or anything running.
Additionally, my RO system pressure dropped off and yesterday actually quit. I checked that tank and it was empty.
I had previously isolated the RO system to see if it was causing the pump to cycle. Pump still came on.
I have not yet checked pressure tank on well pump.
I should also say that my system has a check valve just before pump inlet as well as foot valve. What are the odds both of them have a slow leak allowing pressure to drop off?

Pump was replaced last August (2018) and tank approx 3-4 yrs ago. RO is new as of Jan this year.

I plan to isolate the water supply to the house today. If pump still comes on, then it has to be bladder tank or check valves...right? But, why would the RO be empty? Do I have two coincidental issues?

BTW, normal tap water, shower, etc has full pressure, right away. No discernible drop while running. Though I did notice this AM, a knocking noise toward end of pump cycle after running kitchen faucet.

Any ideas are greatly appreciated.

Mike
 

tim-in-oakton

Contributing Member
Member
#4
I had the same issue with my deep well and it was actually a crack in the supply pipe - it failed after I'd replace my pump, likely the R&R of the pump strained the plastic pipe and caused a crack that leaked and caused low pressure and constant cycling.
 
#5
I had the same issue with my deep well and it was actually a crack in the supply pipe - it failed after I'd replace my pump, likely the R&R of the pump strained the plastic pipe and caused a crack that leaked and caused low pressure and constant cycling.
I would think that would cause pretty frequent cycling though. Mine is like every 3 hrs...sometimes longer. Plus no pressure drop at any faucet.
 

phil mead

Contributing Member
Member
#6
Many years ago leaky check valve caused my pump to cycle. More recently (maybe 5yrs ago), the bladder tank began to fail and caused the pump to cycle. Check the bladder tank pressure, I think it should be a couple of psi below your pump "cut on" pressure.
 
#7
Many years ago leaky check valve caused my pump to cycle. More recently (maybe 5yrs ago), the bladder tank began to fail and caused the pump to cycle. Check the bladder tank pressure, I think it should be a couple of psi below your pump "cut on" pressure.
Checked bladder tank this AM. It was actually over what the pressure switch was set for. The switch is a 30/50 on a 1/2 hp pump. The tank was set for the old pump & pressure switch which was a 40/60 and had 37psi. Should have been at 28psi for current setup.

I changed first filter in RO system and that fixed that issue. Appears to have been a coincidental issue...unless well is drawing too much sediment!
 
#8
Soooooo.....turns out it was not two coincidental issues.
The first stage filter of the RO system was clogged. It was preventing the system from making enough good water/pressure to trigger the automatic shut off. So, enough water was still trickling thru the waste water drain and causing the pump to cycle after it had used enough water....about every three hrs.
I replaced the filter and I have drinkable water AND the pump has quit cycling.
 
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