Zodiac TRi pH Module - 4 Maintenance; Cleaning the Sensor(S); Winterizing; 5 Troubleshooting

H0412500.A - EN - 2013-02
10
EN
To prime the peristalc pump more quickly, it may be necessary to repeat these steps several mes, depending on
the length of the pH minus feed line.
3.6.2 Acvang / deacvang the peristalc pump
For safety reasons the peristalc pump is not acvated when delivered.
When the TRi pH or TRi PRO module is connected to the TRi power pack, the peristalc pump is programmed to start ap-
proximately about 8 hours aer being turned on. During this period, the default display on the LCD screen will show 'pH
---'.
To acvate the peristalc pump immediately:
• Press
, then use the or keys to select 'CALIB. PH' or 'CALIB. PH/ACL', then press .
• Use the or keys to reach the 'DOSAGE OFF' (or 'DOSAGE ON' line if the pump had previously been acvated).
• Press
to acvate the peristalc pump ('DOSAGE ON') or deacvate the peristalc pump ('DOSAGE OFF').
4. Maintenance
4.1 Cleaning the sensor(s)
• If the end of the sensor is coated with a greasy lm (deposits of cosmecs, suntan loon, etc.), soak it for a few minutes
in warm soapy water. Warning: do not use a detergent, dishwashing liquid is beer.
• If the end of the sensor is coated with limescale or if the above procedure is not enough, soak the sensor in a 10% di-
luted soluon of hydrochloric acid for a few minutes (wear the necessary safety equipment).
• Rinse thoroughly with clean water.
• Calibrate the sensor again (see § 3.3).
This acidic cleaning soluon can be bought from your reseller or you can make it up yourself by mixing 1 volume
of acid with 9 volumes of clean water in a suitable container. ALWAYS ADD ACID TO WATER, NEVER THE OTHER
WAY AROUND!
• Always clean the sensor before carrying out the calibraon procedure.
• During cleaning, NEVER WIPE THE SENSOR WITH A CLOTH but shake it gently to remove excess rinse water.
4.2 Winterizing
• Rinse the peristalc pipe by pumping clean water instead of pH minus soluon, using the 'TEST DOSAGE' funcon (see
§ 3.6.1).
• Remove the sensors from their sensor holders. Store them in their original boles or in a container lled with tap water.
• If necessary, close o the sensor holder using a coin or the threaded stopper supplied in place of the sensor holder.
NEVER leave a sensor to dry and/or exposed to the risk of frost, which would permanently damage it.
5. Troubleshoong
Message Causes Soluons
PH LOW The measured 0.8 PH units or more below
the set point
Check the pH in the pool
Check the set point
Calibrate or replace the pH sensor
The pH sensor is dirty, out of calibraon or
not working
Clean and calibrate the sensor
Replace the pH7.5 buer soluon if necessary
The pool size seng is too large Check the selected pool size