Common Dewatering Pump Problems and How to Troubleshoot

July 10, 2024


Dewatering pumps often develop problems that may make them unusable. However, these problems can be easily fixed without even requiring the assistance of a technician or an expert.

Some of the common dewatering pump problems and how to fix them are explained below:

Dewatering Pump Won’t Start

You may notice that your dewatering pump won't start after purchase and installation. The following are some of the reasons why your dewatering pump won’t start:

  • The fuse or breaker of the pump may be broken. If this is the case, the fuse or breaker can be easily replaced.
  • The wiring of the pump may be faulty. If this is the case, a technician can help you to fix it.
  • The starter of the dewatering pump may also be faulty. The starter can be cleaned or replaced if bad.
types of dewatering pumps

Dewatering Pump Won’t Pump Water

This problem is fairly common and can easily be fixed. Some of the reasons why the dewatering pump will not pump water include the following:

  • If there is no foot valve, the pump will not pump any liquid or water. The foot valve ensures that the pumped water does not return to where it is being pumped.
  • If the dewatering is not primed, the pump will also not pump water.
  • If the dewatering pump loses its prime, it will also not pump water.
  • If there is a leak around the flange, the dewatering pump will not pump water. In this case, you need a gasket or sealant to make the flange air tight.
  • If the depth where the water is to be pumped is too high, the pump will not also pump water. You must match the head of the pump to the depth of where the water will be pumped.

Poor Suction of Water

This problem arises when the dewatering pump can not suck enough water. The following are some of the reasons for low suction of water:

  • The blockage f the foot valve and the suction hose with dirt and other unwanted materials can lead to low or poor suction of water by the pump. The dirt should be removed from the foot valve and suction hose for the pump to suck water well.
  • Leaks in the suction hose or pipe can also lead to poor suction of water. The leaks should be plugged in order for the dewatering pump to pump water well. If the suction hose is too bad, you may need to get a new one.
  • If the foot valve or check valve is worn out or bad, the pump will have a poor suction of water. The foot valve or check valve should be replaced in this case.

The Flow Rate of the Dewatering Pump is Low

This problem arises when the volume of water pumped by the dewatering pump is too low. The following sre some of the reasons why the flow rate of a dewatering pump can be low:

  • The blockage f the foot valve and the suction hose with dirt and other unwanted materials can lead to low flow rate. The dirt should be removed from the foot valve and suction hose for the pump to pump enough water.
  • Leaks in the suction hose or pipe can also lead to poor flow rate. The leaks should be plugged in order for the dewatering pump to pump water well. If the suction hose is too bad, you may need to get a new one.
  • If the foot valve or check valve is worn out or bad, the pump will have a poor flow rate. The foot valve or check valve should be replaced in this case.
  • Leaky or bad supply hose or pipe can also cause low flow rate. If this is the case, the supply hose or pipe should be repaired or replaced.

Are you having problems using your dewatering pump, if so, let’s continue the conversation in the comments’ section or contact us on 08025141924.

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