Backwashing a sand filter pump involves reversing the water flow to clean the filter. Here's how to do it, based on the provided reference from a YouTube video about backwashing a sand filter:
- Select Backwash: Choose the "backwash" setting on your multi-port valve.
- Start Water Flow: Water will begin exiting through the backwash hose.
- Turn Pump On: Turn the pump back on to increase water flow. The increased flow helps clean the filter more effectively.
- Monitor Sight Glass: Observe the sight glass on the multi-port valve until the water runs clear.
