
24
Internal Connections (
for technical personnel only
)
The unit is provided internally prewired, and all connections of normal use (power supply, dosing pumps, measurement
sensors and flow sensor) are available externally via cable or connector.
However, if you need to operate on the electronic boards or replace blown fuses, refer to the diagram below.
Notes:
•
The possible reversal of the connections line / neutral of the power supply does not affect the normal operation.
•
If the level and flow inputs are not used, leave them open (not connected).
START-UP
At start-up the microcontroller displays for a couple of seconds information about the firmware (type/version), then shows
the two measures flashing for all the start-up delay time (if set) and then starts operating accordingly with the configured
working mode.
VISUALIZATIONS
During normal operations, the display shows the two measured values on the top line, while the bottom row displays the
status of the two pumps. In models with Pt100 (optional) the bottom row switches between the temperature measurement
and the status of the two pumps.
For example:
“7.25pH 286mV”
“65i/min 78i/min”
In these conditions, pressing the
⇓
or
⇑
button, you can display the OFFSET and GAIN values of the pH and redox
measurements.
For example:
“7.25pH”
“O=-4 G=1.000”
This information is useful to verify the electrode status. Note that an electrode in good condition should have an offset close
to zero and a gain close to 1.000. When these values deviate from the ideal ones, indicate a dead electrode or sensor
aging.
IN
Chlorine
Power
Transformer
Fuse F3.15A
Y/G Br Br
Pump 1
Y/G N L
Power Supply
µProcesor
PT100
B
r
B
k
B
l
F
lo
w
+ -
Level 1
Connector for front board flat cable
Y/G Br Br
Pump 2
IN
pH
R
es
er
ve
d
O
U
T
A
la
rm
+
-
L
ev
el
2