Well Pump Pressure Switch Repair
Homesteading DIY: Well Pump Pressure Switch Repair
In recent months, I’ve had to file the points (contactors) in the well pump pressure switch on a few occasions, after loss of water pressure to the house. I finally decided to replace the contactors in the switch. Our pressure switch is made by Square D, and while you can buy the entire switch, I decided to see if a contactor repair kit was available on
Amazon, and sure enough, it was. You will need to switch part number to search for the appropriate repair parts. Our switch part number is 9013FSG, located inside the switch cover, and the corresponding Square D Replacement Contact Kit 9998PC241 worked perfectly; $12 more or less, delivered.
If a fella wants to spend more time on the homestead than off, spending less money is important, which brings us to yet another homesteading DIY project. This one is relatively small, it took me a couple of hours, and as usual, it was my first time out. If I have it to do over again, it could probably be done in 30-45 minutes.
Once you have the parts on hand, and you’ve notified the significant other that there will be no water pressure for a bit, it’s time to get started.
Homesteading DIY: Pressure Switch Repair Process
Step 1: Secure power to pressure switch and well pump at breaker panel
Electrically isolate well pump pressure switch
Step 2: Secure pressure switch inlet valve from the well pump
Hydraulically isolate well pump pressure switch
Step 3: Remove the cover from the pressure switch
Cover removed from well pump pressure switch
Step 5: Refer to the Square D instructions
a) remove power leads to the contactor block (4 wires)
Power leads removed from well pump pressure switch
b) remove stationary contact block, two screws
c) remove movable contacts
Contact block and movable contacts removed
d) replace contacts with new hardware; movable contacts and block
New contactor block and movable contacts
e) reattach wires to contact block
New movable contacts installed
New contactor block installed; power leads reattached
f) remove old diaphragm, 6 screws
Old diaphragm removed; brass bit goes with new diaphragm
New diaphragm
g) install new diaphragm
Step 6: Open supply valve to switch
Step 7: Re-energize and set pressures; cutoff pressure (operating point on rising pressure) was 50 psi, cut-on pressure (operating point on falling pressure) was 38 psi. Cut-on was reset to 40 psi.
Two nuts used to set pressures
