Water Pump Pressure Control Switch t FAQs

How to increase the water pump pressure control cut-in and cut-out pressure

I have a square d control. It cuts off at 40 psi and goes down to 20 psi before it comes back on which is to low when I am using one sprinkler. I want it to come on at 30 psi. I can't understand how to do that looking your directions. Pls help - John 5/19/11

Reply:

How to increase the water pump pressure control cut-in and cut-out pressure:

Take a look again at the instructions above that indicate which nut to turn in which direction to increase the well pump cut-in pressure (that's your 20 psi number) and cut-out pressure (that's your 40 psi number).

You should be able to raise the cut-in pressure to 30 psi and you will probably want to raise the cut out pressure to 50 psi, provided that your pump can actually reach that number. If the pump keeps running forever even AFTER you have turned off the water, then it is not capable of reaching 50 psi and you'll have to lower that setting to avoid burning up the water pump.

If the instructions are still too complicated to follow then you would be best off asking a plumber to change the settings for you. Just be sure the person you hire is familiar with well pump pressure control switches.

Pump Control Switch Air / Water Tube Use & Connections

Where to hook up the air tube on to the pump or control switch

Changed brands of pump where do I hook the tubings have air control valve on tank where do's it mount on a Pentair pump .

where does the tubings go one on bottom of regulator and where does one from regulator mount O pump ? On 2016-09-01 by Bubba

Solution by (mod) -

Bubba:

All pressure control switches need a connection to a pipe or tube that conducts water pressure from the water system to the pressure sensor port on the switch.

Actually the tube (or small diameter rigid pipe or pipe nipple) will normally contain water, not air, though a bit of air in the tube usually won't affect the switch operation.

The instructions that came with your particular switch will show where that connection is located: usually it's on the switch bottom plate and usually it's a simple 1/8" or at most 1/4" NPT threaded fitting.

Find the old pressure tube or pipe to which your prior switch was connected, and connect that to the new switch.

Pressure switches usually mount in one of two ways: either the switch is mounted directly to the pressure communicating tube or pipe - in that case a 1/4"or 1/8" npt rigid pipe, typicaly 1-4" long.

The switch mounts on the exposed end of the pipe (properly called a nipple as it's short and threaded), and the other end of that nipple is screwed into the pump or piping where it can receive water and thus pressure.

Other pressure switches are bolted to the pump through a bolt or screw fitting, or may be mounted anywhere nearby.

On those switches a flexible tube, either flexible copper tubing on older systems or plastic on newer systems, connects to the pump or piping and to the switch to convey water pressure.