Pentair FLECK 3150 NXT, Installer Manual

Page: 24 / 182

Installer manual Fleck 3150 NXT/NXT2 - Description
24 / 182 Ref. MKT-IM-010 / C - 18.10.2019
3.5.3 Filter cycle (3-cycles operation)
Service — normal use
Untreated water is directed down through the filter media and up through the riser
tube. The impurities are retained by the media. The water is filtered as it passes
through the media.
Backwash — cycle C1 for DF configuration, C2 for UF configuration
The flow of water is reversed by the valve and directed down through the riser tube and
up through the filter media. During the backwash cycle, the filter bed is expanded and
debris is flushed to the drain, while the media bed is remixed.
Rapid rinse — cycle C3 for DF configuration, C4 for UF configuration
The valve directs water down through the filter media and up through the riser tube to
the drain. The media bed is getting re-compacted.
Info
For illustration purpose only. Always verify inlet and outlet marking on the valve.