❺ Troubleshooti Ng; I Appliance Behaviour - Zodiac pH expert Manual De Instalación Y De Uso

❺ Troubleshooti ng
• If a problem occurs, before you contact your retailer, please carry out these few simple checks
using the following tables.
• If the problem conti nues, contact your retailer.
• : Acti ons to be performed by a qualifi ed technician only

5.1 I Appliance behaviour

Behaviour
•
connector problem
The value displayed
on the appliance is
frozen at about 7.0 pH
•
cable is damaged
•
close to an electric cable lead-
ing to interference
•
the pH sensor bulb
The appliance always
displays an unsuitable
or constantly unstable
•
value
coati ng and/or dirt deposits
•
fi tt ed on the piping
•
Slow response from
stati cally charged
the pH sensor
Possible causes
Cable problem and/or BNC
The pH sensor connecti on
The pH sensor cable is too
There is an air bubble in
Problem on sensor's porous
The sensor is not correctly
The pH sensor is electro-
Soluti ons
• Check that the connecti on between the
sensor and the control box has not short cir-
cuited (between the cable's central core and the
external shielding)
• Check that there is no dampness and/or
condensati on on the BNC socket
• Check the cable and/or the BNC connector
• Reduce the distance between the appliance
and the sensor
• Put the pH sensor in the verti cal positi on
and shake it gently so that the air bubble rises
to the top (it must be mounted in the verti cal
positi on or ti lted to 45° maximum, see §"2.2.1
Sensor and injecti on point locati on")
• Restart calibrati on
• Check that the pH sensor bulb is not
damaged and that it did not dry outside the
water
• As a last resort, clean it by dipping the
sensor in a 10% hydrochloric acid soluti on for a
few hours
• Place the sensor in a more suitable locati on
(see §"2.2.1 Sensor and injecti on point loca-
ti on")
• Rinse the sensor with clean water
• Do not wipe the sensor with a cloth or
paper, shake it gently
EN
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