HygroMatik WL-ROL 160-1200 Series, Manual

Page: 39 / 76

Page 39
The different operating states
Permeate production: Production of prod-
uct water. The V
FEED
, P
HP
and P
ASC
relays
are energized.
STAND-BY: Unit is waiting on request. The
unit is ready for operation, all relays are off.
Flushing (to prevent deposits on the mem-
brane surface): Factory activated in the main
menu, flushing (when the unit is switched
on), before/after water production and/or
cyclically after a certain number of hours. The
cyclic flushing can also be done in STAND-
BY mode.
Never deactivate the flushing function!
(Avoidance of microbial contamination)
The production is controlled by the two level
switches in the permeate tank:
• PS
HIGH
starts the production
• PS
LOW
stops production
In the MinPressure condition, the unit starts
the water production: it opens the input sole-
noid valve and starts the pressure pump.
To avoid damage, a delay of 3 seconds is
given after the input solenoid valve has
opened.
When the MaxPressure condition is reached,
the control unit goes into stand-by mode: the
input solenoid valve closes and the pressure
pump stops.
In the menu it is possible to deactivate one or
both level switches and to operate the sys-
tem with only one or no level switch at all. If
both level switches are deactivated, the sys-
tem goes into continuous production after
switching on the power supply.
When the controller is switched on, a module
flush is first carried out (if activated in menu
11).
After switching on the control system and
module flushing (if activated in menu 10), the
control system goes into production mode if
the Min. pressure condition is underrun.
If programmed in menu 11 CLEANING the
control unit starts an interval rinse during pro-
duction as well as in standby (against stand-
still contamination) as soon as the countdown
for the rinse interval has ended. The count-
down for the rinse interval is reset at each
rinse.