Pumps, Troubleshooting tips

Electrical Failure: Common Problems on a Well Pump System

power failureFollowing a power failure, we need to check our water system to make sure it’s not damaged. You’ll be able to notice these situations and follow our tips for restoring its operation when the power is restored.

Power loss and pump shutdown

The most immediate effect of a power failure is that the well pump will lose power and stop working.

That’s why we recommend switching off the pump if possible in the event of a power failure, to avoid overvoltage when the power returns.

Lack of water

The water supply to your home will be interrupted.

Potential damage

If the power suddenly comes back on, this could cause a power surge which could damage the well pump and/or system components.

When the power returns, certain problems may arise

Surge voltage

A sudden return of electricity can cause a power surge. This could potentially damage the well pump or the system’s electrical components. Make sure the pump is switched off before the power is restored.

System overload

If the pump tries to start immediately and simultaneously with other appliances in your home, it could overload your home’s electrical system.

Pump failure

The pump may not start once power is restored. This can be due to a variety of reasons, including electrical problems or mechanical problems within the pump itself.

Air in the system

Sometimes air can get into water pipes during a power failure. When the pump is restarted, this air can cause the valves to spit.

Dirty water

Sediments and minerals can be stirred up in the well during pressure changes caused by power failure and subsequent restoration. Dirty water may remain in your faucets for some time, letting the water run until it returns to its usual color.

What to do after a power cut

Once power has been restored, the well pump must be reset. This usually involves turning it back on and allowing the system to re-pressurize.

1. Pump won’t start?

  • Check the power: make sure the power has been restored to your area and home. Check the pump circuit breaker on the electrical panel on the wall, to make sure the pump circuit hasn’t tripped.
  • Resetting the pump: Some pumps have a reset lever, usually located near the pressure switch. Raise the lever to 35 degrees to reset the pump.
  • Check the pressure switch: it may be locked in the open position. If so, try tapping it lightly with the handle of a screwdriver to see if it closes.

2. Reset low-level pressure switch (see video)

  • Start by closing your main valve located at the outlet of the pressure tank.
  • Then activate the small arm by pushing it upwards (position 2 on the photo). Be careful not to push too high (position 3 on the photo) as this position turns the switch off.
  • If your pump is working, you’ll see the pressure rise and between 20 and 30 psi the little arm will be relaxed. You’ve reprimed your pump.
  • Open the main valve slowly to avoid water hammer.

3. Does the pump produce dirty water?

  • Let the water run: Sometimes, sediment can be stirred up in the well by changes in pressure. Let the water run for a while to see if it clears up.
  • Check your filters: If you have a filtration system, check whether the filters are clogged and need replacing.
  • Well inspection: if the problem persists, there may be a problem with the well itself. You may need to have the well inspected by a professional.

1. Once power is restored, the well pump must be reset. This usually involves turning it back on and allowing the system to re-pressurize.

2. Is the pump running but not producing water?

  • Check if your pump is running dry. If so, turn off the power and add water until the pump overflows, then turn the power back on and check if the pump restarts.
  • Inspect the foot valve: If the foot valve at the bottom of the well is damaged, it may allow water to flow into the well, preventing the pump from drawing water upwards.
  • Check water level: If the water level in the well is too low, the pump may not be able to draw in water. You may have to wait for the water level to rise again.

3. Does the pump produce dirty water?

  • Let the water run: Sometimes, sediment can be stirred up in the well by changes in pressure. Let the water run for a while to see if it clears up.
  • Check your filters: If you have a filtration system, check whether the filters are clogged and need replacing.
  • Well inspection: if the problem persists, there may be a problem with the well itself. You may need to have the well inspected by a professional.

Remember, these are general guidelines.

It’s important to note that every well pump system can be different, so these are general observations. Always refer to your well pump manual or consult a professional for advice tailored to your specific system.

By following these guidelines, you can ensure that your well pump is properly maintained and that you have access to clean water even in the event of a power failure.

If your well pump does not return to normal operation after the power failure and you have noticed any of these problems, contact us for an inspection, to avoid further damage to the pump system.

If you don’t feel comfortable performing these checks, or if the problem persists, please contact us.
(450) 275-1304.

Handling pump control components can be complex, and there is a risk of electric shock or system damage. Be careful!

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