Setting Up for Backwash:
- Turn heater OFF: must cool down for 6 mins before shutting off pump
- Turn the UV OFF: must cool down for 6 mins before shutting off pump
- Turn pump OFF using VFD
- Switch main valves labeled A, B,C and D to the backwash position (A to close, B to open, C to close and D to open) also close the filter media valves opening just the one for the filter that is being backwashed
- Double check everything
- Turn pump ON and fill backwash tank
- Turn pump OFF
- Repeat until the backwash water is clear.
- After backwashing, close the valve and open the next filter to clean once the backwash tank has emptied prior clean up.
Resetting After Backwash:
- With pump OFF: Switch all valves back to normal operating position: Switch main valves labeled A, B,C and D to the normal position (A to open, B to close, C to open and D to close) also open the filter media valves.
- Turn pump ON
- Bleed air out of filters by turning the small threaded valve at the top of each filter
- Turn heater ON
- Turn controller ON