541N SERIES
Erie Water Treatment Controls – Belgium
Page 5
Injector & Flow Control Selection
Injector
The injector determines the brine concentration (ratio between brine suction and rinse water) and the brine flow
through the resin bed, thus the contact time between brine and resin. Injector performances vary significantly with
inlet pressure.
Inlet Inj. 9 Inj. 8 Inj. 5 Inj. 4 Inj. 3 Inj. 2 Inj. 1
press. Brine Rinse Brine Rinse Brine Rinse Brine Rinse Brine Rinse Brine Rinse Brine Rinse
bar l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min l/min
1,38 0,15 0,68 0,23 0,68 0,38 0,68 1,14 1,14 1,14 1,51 1,14 2,27 1,14 2,65
2,76 0,26 0,95 0,42 0,95 0,76 0,95 1,51 1,51 1,89 1,89 1,89 3,03 1,89 3,79
4,14 0,30 1,10 0,45 1,10 1,14 1,10 1,89 1,51 2,27 2,27 2,27 3,03 2,27 4,92
5,52 0,30 1,25 0,45 1,25 1,32 1,25 2,08 2,46 2,27 2,84 2,46 3,97 2,46 5,49
6,90 0,30 1,40 0,45 1,40 1,51 1,40 2,08 2,65 2,27 3,03 2,65 4,16 2,65 6,06
!!! The following table is only an indication and is valid for an inlet pressure of 3 bar, a bed height of 30” and
a salt consumption of 120-150 gr/l resin.
Drain flow control (optional)
The drain flow control determines the resin bed expansion during backwash (541N18 and 541N94 only),
independent of the inlet pressure. The optimal bed expansion is generally obtained at a backwash flow of 1,8 L/min
per dm2of resin bed surface. In case of the 541 valve, it also helps to keep the piston in the regeneration position
when the operating pressure is extremely low (< 1,5 bar).
Tank
