MY AUTOMATIC PUMP STOPS AND STARTS CONSTANTLY, HOW CAN I MAKE THE PUMP RUN LONGER?
A pump short cycling is a function of the basin diameter and the “on/off” pumping range. Since the basin is in the ground it is unlikely that it can be enlarged. If you have an automatic unit which has a self contained float switch the “on/off” pumping range cannot be adjusted. But with a nonautomatic unit controlled with a pump switch you can have flexibility in the pumping range adjustment. Short-cycling can decrease the service life of a switch assembly. If this occurs, an automatic unit can be converted to operate with an external pump switch which will expand it’s pumping range and decrease the amount of short cycling. Installing a check valve in the discharge line will help decrease short cycling. • MY PUMP MAKES A LOUD NOISE EVERY TIME IT STOPS. WHAT’S WRONG? The noise you hear is the check valve closing. When the flow reverses in the discharge pipe after the pump stops, this slamming effect (Water Hammer) occurs. • MY PUMP IS HUMMING BUT NOTHING IS BEING PUMPED. WHAT’S WRONG? T
