18/24
2006/05 - Indice de révision : B - code : 0029570
LEVEL ALARM
The series pH-/+220 dosing pump features an end of tank level alarm. The level sensor that comes
with the pump should be mounted on the suction strainer (photo below) and connected to the BNC
terminal marked “LEVEL PROBE” found underneath the pump.When the level of the reagent in the
dosing tank falls under the minimum level defined by the position of the sensor, the pump stops
working immediately and the “LEVEL” LED blinks.
Mounting the tank low level
sensor on the suction strainer
DISPLAY PANEL
The display panel comprises two sections:
THE pH/Hr DISPLAY SCALE :
During normal operation, the display indicates the pH of the
pool water.
A single LED lit up indicates a pH corresponding to the
LED.
When two LEDS light up at the same time, the pH is between the two values indicated. (For
example: LEDs 7.2 and 7.4 are lit up: the value detected by the probe is 7.3).
If the LEDs corresponding to 6.8 or 7.6 blink, the value detected is off the scale. (pH below 6.8 or
above 7.6).
The display during programming can indicate the calibration point, the max dosing alarm or the set
point.
When the LEDs light up successively from the bottom to the top, this indicates that the data
programmed (calibration, max dosing alarm or set point) has been saved.
THE KEY PAD:
Each of the keys located under the
display panel features two labels and
one LED. The label above the key
indicates the programming function that
may be selected by pressing the key.
The label underneath provides information concerning abnormal operating conditions.
If the LED associated with a key is lit continuously, this indicates that the function indicated has been
selected.
If the LED associated with a key blinks, this indicates an alarm.
PH220
6.8
6.8
7.2
7.2
7.0
7.0
7.4
7.4
7.6
7.6
½
½
1
1
2
2
3
3
Hr
Hr
pH
pH
ON/O
FF
V
-A
L ARM
V
-A
L ARM
SET P
O
IN
T
S
T
A
N
D -BY
S
T
A
N
D -BY
SECU
RI
TE
M
A
X
DOS
M
A
X
DOS
CALIB
RA
TI
ON
L
E
V
E L
L
E
V
E L
