Adjusting the PENTAIR Myers ALC Adjustable Level Sealed sump level control switch ensures your sump pump operates efficiently. Here's a step-by-step guide:
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Mounting: Confirm the switch is correctly mounted, either on the discharge pipe or through a flange on the pump cover, following the provided instructions. Position the weights on the support cable so they hang freely, without touching the pump or the basin walls. The lower weight should be at least 4 inches above the sump's bottom, and the upper weight's top should be below the inlet pipe's bottom.
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Cable Trimming: Trim any excess cable, ensuring it doesn't extend below the lower weight. After cutting, slightly adjust the lower weight by sliding it down about 1/4 inch to prevent the cable end from causing switch malfunctions.
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Switch Operation Explained: The ALC control switch works based on the weights' position on the cable. When the water level rises, the weights are submerged, affecting the load on the primary spring, which activates the pump. The pump-down cycle reverses this process.
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Testing the Switch: After installing the pump and switch, test its operation by adding water to the sump. The pump should start when approximately half of the upper weight is submerged and stop when about half of the lower weight is out of the water. If the pump doesn't function as expected, check for issues like blown fuses, tripped circuit breakers, or pump defects.
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Dismantling for Maintenance: You can disassemble the switch for cleaning or parts replacement if necessary. Refer to the provided instructions for correct disassembly and reassembly. Consulting the PENTAIR Myers ALC manual provides detailed instructions for these processes. By following these steps, you can correctly adjust and maintain your ALC control switch for optimal sump pump performance.
