Pentair FLECK 3150 NXT Installer Manual page 47

6. Tanks return to standby due to decreased total flow rate and trip points programmed. The tank
with the most remaining volume will be the first to go into standby.
Inlet
Valve
Tank
4th in
standby
(Primary
valve)
7. The primary tank regenerates when its remaining volume becomes zero. The next tank with the
least remaining volume becomes the new primary tank. The tank with the next least volume
remaining will be the first to be activated when the flow rate reach the programmed trip point.
Tanks continue operating in this order.
5.7.6.2 System operation in regeneration
Inlet
Valve
Tank
In regen
1st in
standby
Ref. MKT-IM-010 / B - 28.05.2018
Installer Manual Fleck 3150 - NXT - Installation
3rd in 2nd in
standby standby
New 3rd in
primary standby
tank
Outlet
Check valve
1st in
standby
Meter
Outlet
Check valve
2nd in
standby
Meter
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