DDPHCL2_man_r1.0 – 03/2021
Page 16
Notes
If the system does not automatically recognize the buffers or the “Calibration Impossible” error occurs, it can
be due to: a) calibration solution contaminated or expired
b) electrode faulty or dead
c) connection cable or connector damaged
During normal operation, it is possible to view the offset value by pressing
, to check the electrode status.
The ideal offset value is close to zero. When this value is close to the max / min limits (-100mV ... +100mV),
the electrode is contaminated or dead.
Manual Mode
At any time you can force a manual working mode, useful for a temporary use of the system. If a
password has been set (see parameter P16), the system will require it to enable the access to this
feature.
1) Press the CAL key to enter the menu mode and
use the
keys to select the option “MANUAL
FUNC.1” (or “MANUAL FUNC.2”)
2) Press CAL again to confirm
3) Similarly proceed for pump 2
4) Press ESC at any time to exit the manual mode
Warning!
In manual mode only one pump at a time can be activated.
CONTROL EXAMPLES
Typical application in swimming pool control: acidification when pH exceeds the pH value of 7.30.
Refer to the “List of configuration parameters” and set:
-
P01
ON/OFF working mode for pump 1
-
P02
set-point 7.30 pH
-
P04
dosage direction “ACIDIFICATION”
-
P11
alarm pump 1 = 60 minutes
Typical application in swimming pool control: chlorination when redox potential falls below 680 mV.
Refer to the “List of configuration parameters” and set:
-
P06
PROPORTIONAL working mode (recommended for an easier stabilisation)
-
P07
set-point 680 mV
-
P09
dosage direction “CHLORINATION”
-
P10
if the quantity of the product to be injected is not known, it is recommended to start with a
time base of 60 seconds (default), and if the chlorination process would last too long, decrease the
time base gradually until a conditioning time of approx. 30-45 minutes
-
P12
alarm pump 2 = 60 minutes
Common settings for the two examples described above:
-
P13
start-up delay of 15 minutes (average time required for the polarization of redox electrodes)
-
P16
protection PASSWORD to prevent unauthorized access
M A N U A L
F U N C .
P 1
C A L > Y E S
E S C > N O
M A N U A L
P U M P
1
O F F
