More water or well pump pressure control switch setting or adjustment FAQs:

This article series answers commonly-asked questions about  how to adjust a well pump or water pump pressure control switch. We provide pump pressure setting advice, procedures & questions & answers about adjusting the pump switch.

FAQs on how to set the water pump pressure switch cut-in and cut-out pressures

Watch out: SAFETY WARNING OF FATAL SHOCK HAZARD: if you remove the cover of the pump pressure control switch you can get access to the two nuts that adjust the operating pressures of the water pump.

These questions were posted originally

at WATER PRESSURE CONTROL SWITCH ADJUSTMENTS - be sure to see that article if you need to adjust the settings on your pressure control switch for your water pump or well pump.

Why low pressure just in my showers

I have a well water at my home. The pressure in the tank reads 50 when pump cuts out and 30 when starts. It seems to work fine. But there is very low pressure in my showers in both bathrooms. What is the problem? On 2018-10-15 by Dave Rai

by (mod) -

Perhaps clogged pipes or shower heads since your note makes clear that this is not a plumbing-system-wide problem.

Is there advantage of setting the pump control to 30/50 versus 40/60?

is there an advantage in on off pressure cycling 30_50,vs40-60psi On 2018-09-02 by jim

by (mod) -

Yes, Jim, in my OPINION

Running a water supply system at a lower pressure will pretty-much always mean that the building occupants will use less water, thus waste less water, since the delivery flow rate will be less at the lower operating pressure range.

Water conservation becomes increasingly important as just about everywhere in the world fresh, potable water is in ever less supply.

There is a second advantage as well: lower electrical bills. By running the system at a lower water usage rate your water pump may cycle less frequently. (There can be exceptions but this is generally the case, all else being kept equal in a given water supply system).

Additional savings in water usage are, of course available such as low-flush toilets, waterless urinals, and restricted-flow shower heads and faucets.

More suggestions are at WATER CONSERVATION MEASURES https://inspectapedia.com/water/Water_Conservation_Methods.php

The disadvantage of setting the water pressure to operate in the lower range is that in some buildings where mineral clogging or other clogs or restrictions already give a poor water flow at specific fixtures, occupants may gripe about the lousy water "pressure" (actually flow-rate).

However for the sake of water and energy conservation I'd prefer to fix those complaints by finding and fixing the restrictions.

For example it seems unfortunate to me that someone would install a higher capacity water pump and run it at a higher system operating pressure when all that may have been needed is to un-screw a faucet strainer and clear out the debris lodged therein.

Why won't my pressure switches turn off in the 50-60 psi range?

Two pres sure switches later and both refuse to shut off at 50--60 psi.I;ve tried adjusting them to no avail.what is the answer? On 2018-05-18 by DON

Suggestions by (mod) -

If the pressure switch is not responding to changes in water pressure, and assuming that you've adjusted the switches correctly and that they are actually within range of the system water pressure, then I suspect the switch sensor port or tube conducting water pressure to the switch has become debris clogged. Replace the switch and clear the pressure tube.

Or of course if you set pressure higher than the pump is capable of delivering the system will just keep running as well.

My well pump continues to cycle every five minutes even when there is not demand for water

My well pump continues to cycle every five minutes even when there is not demand for water On 2018-04-18 by Sam

Explanation by (mod) -

Sam

If you are certain that no water is running in the building then I suspect there's a leaky foot valve or a leak in the well piping.

No water pressure after a power failure

Our electric went on and off several times during about a 30 minute span never went off and stayed off just intermittent after that our water pressure in the house was very low, just trickling....the pressure at the pump gauge seems to be ok and goes from 30-50 any help much appreciated as I am here alone and husband is gone for 2 months...HELP please. On 2018-02-25 by Debi

by (mod) - check for lost pump prime

Debi

Sometimes during a loss of power a pre-existing problem - a bad check valve or foot valve - is disclosed: because power is off the pump never runs, water is lost down the piping, back into the well, and the pump loses prime.

It's possible too that the pressure gauge is inaccurate - particularly if despite an acceptable (over 20 psi) gauge reading you don't have water pressure in the building.

FIRST if you haven't already done so, turn the pump OFF - don't let a pump run dry or it can be damaged

Next try priming the pump or ask a plumber to help you do so

See PRIME the PUMP, HOW TO at https://inspectapedia.com/water/Prime_The_Well_Pump.php

Keep me posted and we'll take it from there

Water is leaking from our pump control switch

Water leakes from my pump pressure switch box. what causes this ? On 2018-01-08 by Rodney

by (mod) -

Rodney

That sounds as if the diaphragm that converts water pressure to movement to activate your pressure control switch has ruptured. It's time to replace the switch.

Watch out: wet wiring and controls risk death by electrocution. Be sure to turn off power before touching anything near the pump and its controls.

Water pressure is too low: can I just adjust the pump switch?

I bought a house and My pump switch has 30/50 written on it. The home's water pressure is less than ideal.

I shut off the pump, drained the lines, added a valve to make future drainage easier(lots of sediment and corroded gunk in there), and added a new gauge. When everything was drained, I turned the pump back on and it cut in at 15 psi and cuts out at 40 psi.

I made sure to adjust the tank (wellmate) pressure to 2 psi less than the cut in for the time being, but obviously this is too low.

In this case, can I just shut the power off, adjust the cut in & cut off pressures on the switch (to 30/50), and then adjust the tank pressure to be 2 psi less than the new cut in (28psi)?

Also, Where I put the valve on, there is another bolt/plug right next to it... if it is anything like the first one I took out, it is most likely corroded and possibly has build up as well... could this be causing my issue? On 2017-09-19 by Alex

by (mod) - pump switch isn't sensing pressure correctly?

Alex,

Yes you can do what you describe. I'm not clear on where you added the drain valve nor what the other "bolt" is - use the page top or bottom CONTACT link to send me some photos and maybe I can make a more useful comment.

Indeed crud in the pressure switch sensor port or a damaged switch sensor itself (at the bottom of the switch) can cause it to fail to respond when it should.

by Alex

Thanks for getting back to me. I can't provide a picture at the moment but they are square head plugs that thread into the pipe.

I took one out and screwed in a valve with an end that allows me to attach a hose.

There is still one more plug a few inches from the other one.

by (mod) -

Such pipe plugs are normally used to simply close off a utility connection that is not in use.

Solution by Alex - bad pump switch diaphraghm

thanks! I adjusted everything but the air pressure in the tank fluctuates to the same as whatever the gauge is reading near the switch...

which makes me think I need a new pressure tank? For example, when the tank is cutting in at 30, the air pressure in the tank at the top reads 30, and when it cuts out at 50,

the pressure in the tank is 50. When I drained air to 28 psi, it just went back up when the pump cut in.. so my tank doesn't seem to be holding air.

...

It turns out the air cell (diaphragm) in the tank was shot. New tank installed and everything is working well!

Water pressure rises to ~40 psi but no higher.

I have replaced my captive air well water tank and a matching 40-60 pressure switch on a well that serves a pool and pool-house. I used the old Tee pipe with pressure relief valves but replaced the pressure gauge. . Install went well ... no leaks.

When I power on the pump the tank begins to fill and the pressure gauge starts to rise and there is good water flow at the spigots.

The pressure rises to ~40 psi but no higher. When I shut off the power to the pump the pressure gauge drops to zero but there is still residual pressure at the spigots even the next day.

I replaced the pressure gauge but the no change. Can you help me decide what to do to get the system working again? Thank you On 2017-07-09 by Sugarloaf Perplexed

by (mod) -

Sugar


If the pressure switch is set to cut out at 60 and the pump can't push pressure to more than 40 psi then I'd expect the pump to run continuously once it's turned-on.

The problem could be in the well itself - low well flow rate - or something else. We give a detailed diagnosis of this problem at
WATER PUMP WONT STOP RUNNING https://inspectapedia.com/plumbing/Pump_Runs_On.php

If the pump is not working at all, that is if it won't turn on,

first check that when you turn off the pump and drain water until no more water runs, that the tank's air pre-charge pressure is set to 38 psi - 2 psi below the switch cut-in pressure. Otherwise the tank pressure will keep the pump from turning on.

Let me know what's up and we'll continue from there.

Water pressure drops to zero and pump doesn't come on - what's wrong?

Have well pump that the pressure switch opens up and pressure on well goes to zero. Don't know why the pressure switch didn't close at 30# pressure. Pressure switch is fairly new. On 2017-06-05 by Greg

by (mod) -

Usually that's a debris-clogging problem, Greg. Even a new switch may act clogged if the tube or nipple conducting water pressure to it was muddy or rust-blocked. So I'd look there first.

On the other hand IF the switch is CLOSED - calling for the pump to run - AND if there is power to the pump wires, AND the pump does not run or no water is delivered that's a different problem - for which you'd want to see

WATER PUMP WON'T START

...

Continue reading at WATER PRESSURE CONTROL SWITCH ADJUSTMENTS - topic home, or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX.

Or see WATER PUMP PRESSURE CONTROL ADJUST FAQs-4 - more-recent questions & answers about setting the pressure control switch adjustment

Or see these

Recommended Articles

• WATER PRESSURE CONTROL SWITCH ADJUSTMENTS - home for water pump pressure control switch
• WATER PUMP PRESSURE SWITCH DIFFERENTIAL NUT ADJUSTMENT
• WATER PUMP PRESSURE SWITCH RANGE NUT ADJUSTMENT
• WATER PUMP PUMP PRESSURE SWITCH STANDARD (PSI) SETTINGS
• WATER PUMP PRESSURE SWITCH MAXIMUM PRESSURE SETTING
• WATER PUMP PRESSURE SWITCH SETTINGS TOO HIGH
• WATER PUMP SHORT CYCLING - pump turns on and off to rapidly
• WATER PUMP WON'T START - no water pressure
• WATER PUMP WONT STOP RUNNING - pump just keeps running

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WATER PUMP PRESSURE CONTROL ADJUST FAQs-3 at Ins pectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.

INDEX to RELATED ARTICLES: ARTICLE INDEX to WATER SUPPLY, PUMPS TANKS WELLS

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