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9.9
pH or Redox sensor faults (EES Pro only)
PH Probe: pH sensor not detected.
ORP Probe: Redox sensor not detected.
Cut power to the electrical/ control panel, open the connection terminal compartment and check that the
•
two sensors are properly connected at the correct positions on the PCB.
•
Remove the sensor PCB from its housing and check that the pins are clean and in good condition. Reinsert
it fully into its housing.
•
Inspect the entire length of the wires of each sensor and make sure that they are not damaged.
•
Close the by-pass loop shut-off valves and remove the sensors to check them for damage.
9.10
pH/Redox circuit board fault (EES Pro only)
NO CARD sensor connection board not detected.
•
Cut power to the electrical/ control panel, open the connection terminal compartment.
•
Remove the sensor PCB from its housing and check that the pins are clean and in good condition. Reinsert
it fully into its housing.
10.
MAINTENANCE
10.1
Maintenance of ph and redox sensors (EES Pro only)
During use, scale may build up on the pH and Redox sensors, or a greasy deposit may accumulate on their
tips. This may be the case if their response times are getting longer.
The sensors should be removed from their mounting tee and inspected at regular intervals (first make sure
that the by-pass loop inlet and outlet shut-off valves are closed, and place a bucket under the tee to collect
any water).
!
NEVER CLEAN THE TIPS OF THE SENSORS BY RUBBING OR WIPING THEM
If necessary, descale the electrodes by soaking the tips of the electrodes in a 10% solution of Hydrochloric
acid for a few minutes.
To degrease the sensors, dip them in soapy water and agitate them. Rinse the sensors thoroughly after
degreasing.
After being descaled and degreased, the sensors should be recalibrated (see the next paragraph), and the
correspondence between the Redox potential measured by the Redox sensor and the actual concentration
of free Chlorine should be verified.
!
Always keep the tips of the pH and ORP sensors submerged in liquid. Drying will damage the sensor
and void its guarantee.
10.2
Calibrating the ph sensor (EES Pro only)
The sensor must be clean (see the previous paragraph)
10.2.1 Frequency of calibration
The ph sensor should be calibrated :
•
The first time the device is put into operation,
•
upon reopening the pool after winterizing,
•
Approximately every 4 weeks during the pool season.
TRAITEMENT DE L'EAU
2021/02 - Indice de révision : E - Code : 29650
69/80
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