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The Daily Insight

How does a Pumptec work

Author

Nathan Sanders

Published Apr 02, 2026

Pumptec is a microcomputer-based device that monitors motor load and power line conditions to provide protection against dry well conditions, waterlogged tanks, and abnormal line voltage conditions. Pumptec interrupts power to the motor whenever the load drops quickly or below a preset level.

How do you bypass Pumptec?

Bypass Pumptec by connecting L2 and the motor lead with a jumper. If motor does not run, the problem is not Pumptec. D. Check that Pumptec is installed between the control switch and motor.

What does underload mean on Pumptec?

A solid yellow light with no flicker indicates a dry well (underload). This is caused by the load of the motor going below the underload adjustment knob. … Note: In both conditions above, the Pumptec will wait until the reset time-out period has ended before attempting to restart the motor.

Why does my Pumptec keeps tripping?

When Pumptec detects that the motor load has dropped below a preset level for over 4 seconds, it will interrupt power to the motor and display the tripped condition light. To reset Pumptec manually, turn off the power supply for 5 seconds, and then turn it back on.

Can you run a well pump without a control box?

Two wire well pumps do not use a control box. All the elements already come built within the motor or pump house itself. This allows for easier installation. However, if any of the starting components fail, the pump will have to be pulled up and the whole motor will have to be replaced.

How do I protect my pump from dry run?

The most reliable way to protect your pump against dry running is to install external conductivity probe with a switch. This system shuts off the pump before the pump draws in air, providing 100% protection against damage.

How do you test a pump control box?

Turn a multimeter to the “Ohm” setting. Touch the multimeter’s probes on the capacitor’s terminals and watch the meter’s reading. The meter should reach infinite, fall back slightly, then reach infinite again. If it does not, then replace the capacitor.

How do you prevent shallow well pump from running dry?

If a Dole valve is not used, many times the dry well protection device will allow the storage tank to fill until the well is dry. The well pump is then shut off on low amperage, the well recharges for the length of time adjusted on the dry well protection device, and the well pump is again restarted.

How do you protect well pump from running dry?

There are several manufacturers of submersible pump protectors that can be installed by qualified water well contractors that will protect your pump from running dry. Figure 2. A fractional horsepower pump controller (left) and a run dry protection device (right) installed by a water well contractor.

Why do submersible motors fail?

The most common causes for submersible pump failure fall into five categories. These categories include temperature and overheating, hydraulic loading, motor seals, voltage supply and voltage spikes.

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Why is my water pump not pumping water?

Stuck pressure control relays. Problems with the pressure switch relay contacts. A damaged pump motor or worn-out wiring. A torn water bladder/diaphragm.

What size breaker do I need for a 230 volt well pump?

Most submersible well pumps are 230 volts and require a 2 pole circuit breaker (2 individual circuit breakers connected together). What amperage rating does the circuit breaker indicate?

How do you calibrate a pump saver?

The PumpSaver®Plus can also be calibrated while the pump is running. Turn the RESTART DELAY/ CALIBRATION knob to CAL. while pumping. Wait for the pump to turn off (approximately 10 seconds), then adjust the RESTART DELAY/ CALIBRATION knob to the desired setting.

How do I reset my Pumptec?

Press and hold in the reset button on the bottom of the Pumptec-Plus enclosure until the green, yellow, and red lights blink alternately. This should take approximately 10 seconds. You will hear the Pumptec-Plus contactor engage and the motor should start. Release the reset button.

What are the 3 wires on a well pump?

In a 3-wire well pump configuration, the motor is connected by a black, red, yellow, and green (ground) wire. Three-wire pumps utilize a separate control box outside the pump that houses the important starting components, which is usually mounted on a nearby wall above the ground.

What are the signs that a well pump is failing?

Some of the most common indicators of a faulty well pump and pressure tank include: Fluctuations in water pressure throughout the home. Strange noises or rapid clicking sounds coming from the tank. Spitting faucets.

How do you bypass a well pump control box?

Things You Will Need Shut off electricity to the pump at the breaker box. Remove the screws on the box holding the pump control. Remove the box from the wiring attached to the back of the control plate. Loosen the screws holding the two wires to the back of the control knob or switch.

What causes pump to trip?

One common cause of a submersible pump tripping its breaker can be cracks or leaks in the housing. If your pump’s housing is cracked, water could be getting into the pump through these cracks and causing it to short circuit. The same can be happening if you have a leak in your pump which is letting water in.

Why is my well control box humming?

The humming sound means the pump is working but there’s no water to move, so your pump is running dry. … If your well hasn’t run dry on you, then it’s possible your pump has a leaky foot valve and is losing pressure and water, resulting in the humming sound.

What happens if you run a pump dry?

Dry running occurs when a pump operates without adequate liquid. … This triggers shock waves inside the pump which cause significant damage to the pumping element. If left untreated, cavitation will destroy the pumping element and other components over time, drastically shortening the pump’s life.

How do I know if my engine is dry run?

Dry running might be detectable by the pump drawing less current than normal but again that depends on the rating and type of motor. The other option is to sense the water using conduction, pressure or optical methods.

What happens if you run a submersible pump without water?

The impellers of a submersible pump will quickly begin to melt and fuse together when the water level drops below the intake screen of the pump. Running without water even one time can cause the pump to lock up or seriously degrade the pump’s performance. … The impeller, diffuser, shaft seal or motor could be ruined.

How long can a well pump run continuously?

Generally, sump pumps can run for six to 24 hours continuously, depending on how heavy the rainfall is and the quality of your pump. The aftermath of torrential rains or even flooding puts a higher demand on your sump pump to keep your home’s low areas dry.

Why is my well pump not building pressure?

The water pump may have suffered internal damage to a seal, bearing, or impeller. The motor will keep running but the pump is unable to develop normal pressures. “Damage” may include a broken impeller blade, scale or debris clogging the impeller or other pump components, or a failing pump seal or bearing.

Does a well pump have an automatic shut off?

The pump will automatically switch off upon detecting the lack of supply water, protecting the pump from incurring any damage. Some pumps have an automatic re-start function, which will try to re-start the pump at regular intervals to check whether water has become available.

Why does my well pump kick on and off?

Short cycling of a water pump which is defined at SHORT CYCLING WATER PUMP means that the water pump or “well pump” turns on and off too rapidly or too frequently when water is being run in the building. … The most-common cause of pump short-cycling is loss of air in the water pressure tank.

How long can a well pump run before burning out?

Depends on which submersible pump it is. Most are OK with running continuously, but some have limits of “run for less than 2 hours” or “leave to cool down after 30 minutes”.

Why is my well pump running constantly?

A well pump that repeatedly loses its prime likely has underlying problems. In many cases, the problem stems from a leak in the drop pipe. Other common causes include air leaks in either the impeller or the pump casing, faulty check valves inside of the well pump, or a damaged foot valve at the bottom of your well.

Is submersible pump legal?

There is a ban on submersible pumps for extracting ground water. So we suggest you should not use the same as you can land up paying penalty.

Will submersible pump burn out?

A pump can also burn out from having the pump run dry. Submersible pumps require water to keep cool and maintain the proper operating temperature. If the water level drops below the impeller, the motor will overheat and burn out.

Can a submersible pump be repaired?

The submersible pump must be removed from the well before it can be repaired. Remove the pump and associated piping from the well to repair a deep-well submersible pump. The pump is made up of a motor and an impeller. It may also have a check valve to prevent back-flow and a tail pipe attached below the pump.