Water Inc HOUSEPURE HP04 - Manual (Page 9)

Filter Operation
Backwashing consists of three cycles:
1. Backwash Position
Backwash is a rapid upward flow of water that loosens the media bed and flushes
iron particles, dirt and sediments filtered in the bed out to the drain.
2. Fast Rinse Position
Fast Rinse is a fast flow of water down through the media tank that follows a
Backwash. This flushes all remaining organics from the tank and packs the carbon
bed for efficiency.
3. Service
When the filter is In Service, it is flowing water through the system and removing
objectionable materials from your water.