Pool pump repair: problems and troubleshooting

Ned Kampmann

The pool is not only a bowl of water and a large number of different equipment. To provide safe bathing in the pool should be operating normally, filtration system, water heating system, disinfection system, recirculation, etc. An important part of pool equipment are the pumps. They are necessary to ensure constant circulation of the water, for pumping water through filters, for dispensing of chemicals for the operation of the hydromassage system, different rides. When the output of the pump fails, normal operation of the pool becomes impossible. The cost of the new pump is relatively large. Much more profitable is to carry out pool pump repair for swimming pools.

Pool pump problems

Good pool pump requirements

The main requirement for the filtration pumps – long service life without repair. After all, they have to work almost continuously. In addition, the design of the filtration pump has its own characteristics. Their design implies the presence of the filter casings, which remain of major contamination. The fine fraction of suspended solids must pass through pumps for pools without damaging them.

Another requirement for pumps for swimming pools – quiet operation and efficiency. It is unlikely that the visitors will like the pool to swim under the continuous rumble of working of pumping systems. The efficiency of the pump more important to the owner of the pool, because the water filtration must be carried out continuously, which can result in substantial energy bills.

A pool pump consists of an induction motor and, in fact, the pumping unit with an inbuilt filter. In the case of minor loads, the pump housing is made of durable plastic. If the pump is experiencing significant load, its body is made of bronze. Repair of the pumps can refer directly to the “pump” part, so may be limited to the repair of the motor.

Pool pump problems and troubleshooting DIY

pool pump repair how to

The cause of failure

How to repair

Power to the electric motor is supplied, but the impeller is in place


Blocked impeller, shaft oxidation has occurred


When impeller locked by object, it is necessary to extract it.
Oxidation, which occurred during prolonged idle, may trigger locking shaft. The shaft should be rotated by hand, before it is removed the protective casing, or the impeller

electrical network not corresponds to the nameplate parameters


Check the input parameters and the mains connection block terminals


Pump does not turn on and no sounds


There is no voltage supply or violations had occurred in an electrical circuit


Test input voltage, damage to the electric networks


Fuse damaged because the motor was running with overload


Change a damaged fuse and the negative results indicate the damage to the motor windings


The pump during operation emits unusual noise


The air caught in the flow part, which might be due to overload of the motor


Release accumulated air. Install automatic trap air in the upper part of the trim pump


Have any cavitation in the pump, accompanied with vibration


In the suction nozzle pressure must be above the cavitation of the stock pump is not less than 0.5 m. of water.


A “dry run”


The lack of water in the suction pipe


fluid level is below the height of the suction level


Lower the pump or raise the water level.Water from the lower reservoir with a pump can raise to a height of no more than five meters due to the dilution that typically occurs in the impeller


The pump vibrates


Damaged bearing


Change and grease the bearings.


Not fixed pump housing


Attach the pump to the frame or the foundation to secure. This should be strictly implemented installation manual and to comply with the requirements of the project


The pressure or supply of water Below passport numbers


The impeller rotates in the opposite direction


That may occur with pumps with three-phase power – check the wires


External motor protection triggered during start-up


There is a problem in the electrical part


Check in the terminal box all phases.
Check all the fuse contacts.
Check ground wire

Engine protection runs too often


Too high temperature in the room


Temperature should not be above 40°C


Damaged bearings


Change and grease the bearings.



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