4/ Calibrating Ph & Acl Sensors; Ph Sensor Calibrating Procedure - Zodiac TRiPRO Notice De Montage

4/ Calibrating pH & ACL sensors
IMPORTANT : In order to operate accurately and reliably, it is essential for pH and ACL sensors
to be calibrated before operating the TRi salt water chlorinator with the TRi PRO module.
To do this, check that the TRi power pack is connected to the mains supply, turn off the pool pump and
isolate pH & ACL sensors by closing the valves so as to remove sensors from the POD safely.

4.1/ pH sensor calibrating procedure

11. Remove the pH sensor (blue) from its holder onto the POD (manually unscrew the tightening collar).
Rinse the extremity of the pH sensor with clear water and shake it so as to remove any excess water. Do
not touch or use a cloth to wipe the glass bulb on the extremity of the pH sensor !
12. Place the pH sensor in a sample of 'pH 7,5' blue buffer solution (provided, see picture below).
13. Leave the pH sensor immersed in the buffer solution for approximately 5 minutes in order to ensure
a reliable measurement.
14. From the default display on the LCD screen, press the (MENU) button.
15. Use the (UP)/(DOWN) buttons to display 'pH/ACL SETUP', then press (SELECT).
16. Use the (UP)/(DOWN) buttons to display 'CALIBRATE pH', then press (SELECT).
17. Note the displayed pH value 'CURRENT pH'. If the value is higher than 8,2 or lower than 6,4 there
may be a problem with the pH sensor : it is either dirty or may have been damaged during transportation.
Clean the pH sensor (see chapter 8 / 'pH & ACL sensors cleaning') and repeat steps 1 to 7. If the
problem persists, contact your professional retailer for further assistance.
18. If the pH value displayed on the LCD screen 'CURRENT pH' is between 6,4 and 8,2 pH, press
(SELECT) to start the calibration process (see pictures hereafter).
33