Zoeller M53 Switch Failure

Oeerus o e u od ouse a 100 factory tested model 53 features.

Zoeller m53 switch failure. Zoeller pumps are quite good sturdy and quiet but unfortunately have many well known switch issues. Tubing to pressure switch plugged. When no water is delivered check prime of pump and well piping. 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.

With the higher cost the m98 provides a higher flow rate of 72 gallons of water per hour thanks to the 1 2 hp motor compared to 43 gph and 1 3 hp on the m53. 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.

Pump will not shut off debris under float assembly float bound by basin sides or other switch damaged or out of adjustment. Float switch tether length too short check valve stuck open or none installed in long distance line overload open bidding sump pit too small. Arcing may have caused switch contacts to weld together in closed position. Examine points and other parts of switch for defects.

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. Short demo showing replacing the float switch on a zoeller sump pump. Model 53 sump effluent or dewatering pumps fm2958 0720 supersedes. Clean or replace if plugged.

Replace switch if defective. The switch would get stuck in the high position. Purchased this replacement kit for my zoeller m53. Remove tubing and blow through it.