ES 2050/51
Setting and changing of initial values
19
Duty changeover, Pre service regeneration
1. Duty changeover.
A simplex installation (consists of only) one unit. Connections for number
2 unit are unused.
A duplex installation usually works in standby mode (one unit gives
treated water, the other one is in regeneration or in standby).
If a large flow of treated water is required it is possible for a duplex plant
to work in parallel. When not in regeneration the plant is able to provide
treated water from both columns.
This program is intended solely for a Fleck 9000 central control valve.
ATTENTION
When using this valve, the instructions vary in a number of
details.
2. Pre service regeneration.
If the treated water is used for drinking purposes then it is important to
prevent bacterial growth. A stand by unit could possibly cause
contamination due to bacterial growth during a long period off line.
Regeneration can be programmed to take place immediately prior to the
unit coming into service. Regeneration is held in abeyance until the duty
unit is "exhausted".
Important
The additional water which will be supplied at the end of the
duty period must be allowed for in setting the operating capacity if this
facility is used.
Step nr: 1.1
Single unit Y/N
Step nr: 1.2
2-tank alter.Y/N
Step nr: 1.3
Parallel servY/N
Step nr: 1.4
valve 9000 Y/N
Step nr: 2.0
Pre regen. Y/N