Configuration menu
23
© Lutz-Jesco GmbH 2020
Subject to technical changes.
200922
BA-62010-01-V01
Chlorine Dioxide System
EASYZON Dd
Operating Instructions
9 Configuration menu
This chapter describes the various configuration menus allowing to fully
configure the machine.
These menus can be accessed to by means of the function keys F1 to F4
placed under the LCD display. The home page shows the four keys below,
whose functions are described in the next sections:
n
Change
n
Bleed
n
Adjust
n
Menu
9.1 Change
In this menu level, the operator can enter the operation parameters of the
current
Operation Mode
. Access to this function is also granted when
the machine is ON. If no key is pressed for more than 15 seconds, the
screen automatically goes back to the home page. Choose between
Ma-
nual operation
and
Automatic operation
.
è
Press key
Enter
to enter the edit mode; press key
up/down
to
set the new value, then confirm it with
Enter
.
9.2 Bleed
This function allows the operator to bleed the pumps when an accidental
deactivation of the pumps occurs or after the reagent boxes have been
replaced.
Perform the following working steps:
1.
Turn off the machine.
2.
Open the manual vent placed on the dosing head of the pump.
3.
Press
START
.
4
The pumps will pulse at their max. frequency and for the number of
strokes shown under field
Max. Pulse No
.
4.
When the pump is activated again, close the vent to dose again the
reagent into the reactor.
4
After the flow sensor on the reagent line has detected at least 10
consecutive passages of the dosed flow, the electronic control unit
stops the operation of that pump. When both sensors have detected
the correct passage of the reagents, this phase is terminated. This
phase can also end when the set max. pulse no. has been attained
or by pressing key
STOP
. The max. pulse no. default value is 100,
its setting range is 10 – 500.
ü
Pump bleeded.
9.3 Calibration
Access to this function is only granted when the machine is OFF.
The following options are available:
n
Manual pump calibration
n
Automatic pump calibration
n
Dioxide probe calibration
n
Chlorite probe calibration
è
Press key
up
or
down
to scroll the various options; to enter the
option required press key
Enter
.
9.3.1 Manual calibration of the pumps
è
Press key
up
or
down
to scroll the various parameters; press key
Enter
to enter the
Edit
mode, press key
up
or
down
to edit the
field or the description, then press
Enter
again to confirm.
In this menu, the operator can execute the manual calibration of the
pumps by means of two graduated cylinders (mounted on versions..DP/1)
from where the dosing pumps can aspirate the fluid.
Perform the following working steps:
1.
Set the max. number of pulses (default value 100).
2.
Press key
START
.
4
The machine will produce the max. number of pulses set
3.
Enter the
Acid Total Volume
and
Chlorite Total Volume
values
resulting as the difference between the initial value and the final va-
lue of the graduated cylinders.
4
The volumes per pulse will be automatically calculated and
displayed in the first two parameters of the page.
ü
Manually calibrated.
If the sequence is aborted with the key
STOP
or if the operator leaves the
page without entering the new total volumes, the electronic control unit
will keep the previously calculated values.
Should the volumes per pulse calculated deviate from each other by a
percentage value higher than the one set by the manufacturer, the previ-
ous values remain unchanged.
Should the volumes per pulse calculated deviate from each other by a
percentage value lower than the max. value set by the manufacturer, the
calibration is accepted and the electronic control unit adjusts the working
frequency of the dosing pumps in order to equal the dosed volumes of
both reagents.
9.3.2 Automatic calibration of the pumps
(as option)
Unlike the manual calibration operation, the automatic calibration is per-
formed in a “semi-automatic” mode by means of the two calibration cy-
linders placed on the machine (version ..DP/2). Each cylinder integrates
two sensors that can read the volume aspirated by the pump.
Perform the following working steps:
1.
If the cylinders are not full, fill both.
1.
Press
START
to start the calibration. Otherwise the message
Fill
the calibration cells and press
START!
is displayed.
4
The pumps start at their max. frequency aspirating the volume
contained in the cylinder. At the end of this operation, the
Volume
per Pulse
value is automatically calculated. If the calibration is
aborted before it is completed, the reagents volume values remain
unchanged.
ü
Automatically calibrated.