Zoeller M53 Switch Failure

While both sump pumps are made by zoeller there are a few key differences that set them apart.

Zoeller m53 switch failure.

Remove tubing and blow through it. The biggest issue consumers have with the zoeller m53 mighty mate submersible sump pump 1 3 hp is its float switch. M53 sump pump repair cap and switch assembly 004702 zoeller switch part no 004892 with ur zone screws 4 stainless steel cap mounting 5 0 out of 5 stars 1 68 97 68. That said a supply house near me carries little giant chinese made zoeller and hydromatic copies and claims that their m53 copy has a better seal around the float arm.

Clean or replace if plugged. When no water is delivered check prime of pump and well piping. Float switch tether length too short check valve stuck open or none installed in long distance line overload open bidding sump pit too small. Zoeller pumps are quite good sturdy and quiet but unfortunately have many well known switch issues.

Arcing may have caused switch contacts to weld together in closed position. Pump will not shut off debris under float assembly float bound by basin sides or other switch damaged or out of adjustment. Model 53 sump effluent or dewatering pumps fm2958 0720 supersedes. Oeerus o e u od ouse a 100 factory tested model 53 features.

The m98 is more expensive than the m53 but both are affordable on any household budget less than 200. I purchased this kit a year after installing my m53 when it started behaving weirdly. While the rest of the machine is built to withstand virtually any kind of punishment you can think to throw its way the float switch tends to flame out relatively quickly. Examine points and other parts of switch for defects.

Short demo showing replacing the float switch on a zoeller sump pump. The switch would get stuck in the high position. The constant expansion and contraction of the rubber in the grommet around the float arm causes it to wear faster and once you get water in the switch housing it s going to fail. Replace switch if defective.