How to Bypass Well Pump Capacitor? A Step-by-Step Guide

A well pump capacitor is an essential part of how a well pump system works. By storing and releasing electrical energy, it aids in starting and operating the motor effectively. Capacitors can eventually go down, though, just like any other electrical component. 

Your water supply may be affected if the well pump capacitor fails. We will walk you through bypassing a well pump capacitor in this article as a temporary fix until you can replace it.

Tools and Materials Needed to Bypass a Well Pump Capacitor

Gather the required equipment and supplies before attempting to bypass the well pump capacitor:

1. Safety gear: Safety goggles, insulated gloves, and appropriate clothing.
2. Screwdrivers: Flathead and Phillips head screwdrivers for panel access.
3. Wire strippers: To strip and connect wires.
4. Electrical tape: For insulating wire connections.
5. Wire nuts or connectors: To securely join wires.
6. Multimeter: To measure voltage and confirm power is off.

Step-by-Step Guide to Bypass a Well Pump Capacitor

Step-by-step instructions for Bypassing a Well Pump Capacitor are provided below.

1. Safety First

Ensure that the breaker or disconnect switch for your well pump system is closed. Put on insulated gloves and safety eyewear to shield yourself from electrical dangers.

2. Be Sure the Power is On

Start by making sure the well switch that is next to your pressure tank is not off. Next, make sure the double-pole circuit breaker for the well hasn’t tripped. Reset it if necessary.

3. Check the Pressure Switch

The pressure switch, situated next to the pressure tank, detects water pressure drop and activates the well pump. Testing the switch is crucial as a broken one prevents the pump from starting. To jar electrical connections, remove the lid and strike the screwdriver handle against the tube beneath the switch. A spark triggers the pump’s activation.

4. Replace the Switch if It Is Broken.

If a pressure switch is defective, test the pressure tank to ensure it’s not waterlogged. Unplug the old switch, unscrew it, and identify the wires. Apply pipe dope or Teflon tape to the tubing threads, then reconnect the cables. A new switch costs around $25. If no spark appears, replace the controller.

5. A Short-Term Quick Fix

If the well pump’s tube is activated by hitting the pressure switch, the electrical connections may be pitted or burnt, causing a weak connection. To restore the connection, shut off electricity, check voltage, and remove burnt and pitted areas using an emery board or nail file. Replace the pressure switch as soon as possible.

6. Switch out the pump controller

The pump control cover’s bottom screw needs to be removed before you can take it off the box and disconnect it. Go to the store and get a genuine replacement. If you purchase the same brand, you don’t need to rewire; simply snap the new cover onto the old box. Next, turn on the pump.

7. Verify the Pressure Air valve for a tank

At the air valve on the top of the tank, unscrew the plastic cover. To test if water comes out, depress the air valve using a little screwdriver.

8. Pump up the Tank

To slightly rock the tank, push against the top. It’s awful if you can’t rock it or if it seems top-heavy. Replace it after draining it.

9. Hire a Specialist

If your well pump runs constantly, it may not be possible to fix it yourself. If you hear a pressure switch opening and closing, it’s outside the house and requires professional help. Possible issues include a damaged check valve, a damaged connection, or a damaged water line. A damp area between the wellhead and the home is also a potential problem.

Frequently Asked Questions and Answers (FAQs)

Can a water pump capacitor be bypassed?

Without the capacitor, the motor will function well. The issue arises, though, if the motor shuts off and tries to start again. Let’s say for a moment or two that you have a power hiccup. The motor will be ruined since the pump will stop working and be unable to restart.

How can a well pump with a control box be bypassed?

Remove the infeed and outfeed wires from the control box terminals, then secure them together using wire nuts. The pump will now operate as long as electricity is delivered to the wires.

Will a damaged capacitor allow a well pump to operate?

NO. Without the capacitor, the motor will either not start or not operate. Without testing it, there is no way to determine what caused it. You might try it again after changing the capacitor.

To Conclude

Bypassing a well pump capacitor temporarily restores the water supply, but it’s not a long-term fix. Replace the faulty capacitor promptly to avoid damage to the motor or electrical system. Always exercise caution and consult a professional electrician or well-pump technician for safe repair.