Submersible Bore Pump Shaft Broken

submersible pump shaft
Pump and motor uncoupled showing shaft.

Rare Perth service call yesterday to a submersible bore pump that was producing only about 25% of the water that it normally delivered.

Ruled out all the normal things like a hole in the poly rising main, pump wasn’t running backwards, none of the “normal” causes.???  Winched the submersible pump to the surface. The shaft joining the motor to the “wet-end” (pump) seemed OK but on uncoupling the submersible pump we noted inconsistencies. Found the shaft had sheared actually inside the pump leaving the first 4 of 12 impellors still turning. Quite an uncommon fault.

submersible pump
Submersible pump shaft snapped

Further detective work found the unusual auto start device had been turning the pump on/off, on/off incessantly contributing to the failure. Replaced the pump and installed it all back down the borehole with the original motor. Tested and all good now!

Call us anytime on  PERTH 1300 734 300  or Troy on mobile 0408 454 130. Our mobile bore service teams visit all Perth suburbs.

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