How to backwash a sand filter with a multiport dial valve:

• 1. Shut off pump motor.
• 2. Press down on dial valve handle on top of the filter and rotate valve from FILTER to BACKWASH position.
• 3. Open the backwash line valve or roll out the backwash hose.
• 4. Turn pump on for three minutes.
• 5. Shut off pump motor and move multiport dial valve handle to RINSE position. Run on rinse for 15-25 seconds.
• 8. Shut off pump motor and move multiport dial valve handle back to FILTER position.
• 9. Turn pump back on and note lower pressure on filter pressure gauge. Close backwash valve or roll up backwash hose.