Common Sewage Pump System Problems and How to Fix Them

 A sewage pump system plays a key role in moving wastewater from one place to another, especially in areas where gravity drainage is not possible. Whether for homes, commercial buildings, or industrial setups, a well functioning sewage pump system is important for hygiene and safety. But like any other equipment, problems can happen over time. Knowing the common issues and how to fix them can save you money and prevent bigger problems.

As a trusted sewage pump supplier and drainage pump supplier, Northam Inc. has seen many common issues that customers face. We’ll explain the most common sewage pump system problems and simple steps to fix them.




1. Pump Not Turning On

One of the most common issues is when the sewage pump does not turn on at all. This can be caused by several reasons:

  • Power Supply Issue – Check if the pump is plugged in and if the circuit breaker is working. Sometimes, a tripped breaker or blown fuse can stop the pump from working.

  • Float Switch Problem – The float switch is responsible for activating the pump when the water level rises. If it gets stuck or damaged, the pump will not turn on.

  • Motor Failure – If the motor is burnt out or damaged, it may need replacement.

How to Fix:
Start by checking the power supply. Reset the breaker if needed. Then, check the float switch to make sure it moves freely. If the motor is damaged, contact a professional or your sewage pump supplier for repair or replacement.

2. Pump Running but Not Moving Water

If your sewage pump is running but no water is being moved, it can be due to:

  • Blocked Discharge Pipe – Debris or solid waste may be blocking the outlet pipe.

  • Impeller Blockage – The impeller, which pushes the water, might be clogged with waste or debris.

  • Air Lock – Air trapped in the pump or discharge pipe can prevent water movement.

How to Fix:
Turn off the pump and inspect the discharge pipe for any blockages. Clean the impeller if needed. To remove an air lock, you may need to manually release the air or check if there’s a small hole in the discharge pipe to let trapped air escape.

3. Frequent Cycling (Pump Turns On and Off Often)

A sewage pump that turns on and off too often can wear out quickly. This usually happens due to:

  • Float Switch Set Too Low – If the switch is positioned incorrectly, the pump will turn on with very little water in the tank.

  • Small Basin Size – A small basin can cause quick filling and frequent pump activation.

  • Clogged Inlet – If the inlet is partially blocked, the pump may not get enough water in each cycle.

How to Fix:

Adjust the float switch to the correct level. Clean the inlet screen to allow proper water flow. If your basin is too small, consider upgrading with advice from your drainage pump supplier.

4. Unusual Noises During Operation

Sewage pumps usually operate with a steady sound. If you hear grinding, rattling, or banging noises, it could mean:

  • Debris in the Impeller – Stones, small objects, or hard waste may be stuck inside.

  • Worn Bearings – Bearings can wear out over time, causing loud noises.

  • Loose Components – Vibrations can loosen parts inside the pump.

How to Fix:
Turn off the pump and remove any debris from the impeller. If bearings are worn, they will need replacement. Tighten any loose bolts or screws. If you are unsure, call your sewage pump supplier for help.

5. Overheating Pump

Pumps can overheat if they work for too long without rest or if there is a blockage. Causes include:

  • Blocked Discharge Line – Forces the pump to work harder.

  • Continuous Running Due to Faulty Float Switch – The pump never shuts off

  • Poor Cooling – If the pump is dry running, it can’t cool properly.

How to Fix:
Check for blockages in the discharge line. Inspect the float switch and replace it if faulty. Make sure the pump is always submerged in water while working.

Conclusion:

A sewage pump system is a vital part of any property’s wastewater management. Ignoring small problems can lead to bigger and more expensive repairs later. By understanding the common issues and knowing how to fix them, you can keep your system working efficiently. For quality products and reliable support, choose Northam Inc. as your go-to sewage pump supplier and drainage pump supplier. With the right care and the right supplier, your sewage pump system can last for many years.

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