Pentair FLECK 3150 NXT, Installer Manual

Page: 128 / 182

Installer manual Fleck 3150 NXT/NXT2 - Operation
128 / 182 Ref. MKT-IM-010 / C - 18.10.2019
• the timer advance to regeneration cycle step #5: During transition to
cycle:
• cycle step #5, time remaining 15 min: Once in position:
8.1.3 LED status
Blue → the unit is in service and no errors detected;
Blue flashing → the unit is in service with a queued regeneration;
Green → the unit is in regeneration;
Green flashing → the unit is in standby position, in a multi tank system;
Red → the controllers have detected an error;
All LED flashing → delayed unlock, only forNXT2.
8.2 Recommendations
• Use only regeneration salts designed for water softening in accordance with
EN973;
• for optimal system operation, the use of clean salt, free from impurities, is
recommended (for example salt pellets);
• do not use ice melt, block, or rock salts;
• the sanitizing process (both with liquid and electrochlorination) may introduce
chlorine compounds which may reduce the lifetime of the ion exchange resins.
Refer to the technical guides for resins in common use, providing necessary
checks on the system.
8.3 Manual regeneration
Mandatory
The controller must be in service in order to enable this procedure.
8.3.1 Manual delayed regeneration
a) Press (for NXT ) or (for NXT2 ) once for delayed regeneration.
ð The regeneration starts on the programmed regeneration time. See chapter
Regeneration start time [
} Page 74] for NXT and chapter Regeneration time [ }
Page 106] for NXT2;
ð For NXT: The blue LED flashes and the letters RGQ take place on the valve
state;
ð For NXT2: The blue LED and the symbol on the valve state flash.