2019/08 - Indice de révision : D - Code : 29650
TRAITEMENT DE L'EAU
64/72
9.8.2 PH LOW
This message is displayed when the pH measured by the pH sensor is
less than 6.7.
If no previous event explains this situation, try to resolve the problem by carrying out the following steps
in the order indicated (if the problem is not resolved by one step, proceed with the next):
•
Make sure that the pH set point is correct.
•
Check that the acid dosing pump stops injecting acid when the pH falls below the set point.
•
Check that the sensor is clean and undamaged.
•
Verify the accuracy of the pH sensor by measuring the pH of the pool water using a recently calibrated
photometer that measures pH. If there is a difference of more than 0.2 pH units, calibrate the pH sensor
and check again.
•
If the values measured by EES and the photometer correspond, and the pH is less than 6.7, add base to
bring the pH back to the set point and wait to see if this phenomenon reoccurs.
9.8.3 ORP HIGH
This message is displayed if the value measured by the Redox sensor
greater than
925 mV
.
If no previous event explains this situation, try to resolve the problem by carrying out the following steps
in the order indicated (if the problem is not resolved by one step, proceed with the next):
•
Make sure that the Redox set point value is correct.
•
Check that the device is not in Turbo mode and that it is not producing Chlorine
•
Using a recently calibrated photometer, measure the concentration of free Chlorine in the pool water to see
if this value corresponds with the (abnormally high) Redox potential displayed.
•
Calibrate the Redox sensor
•
Wait for the Chlorine concentration to fall and to see if the phenomenon reoccurs.
9.8.4 ORP LOW
ORP LOW:
this message is displayed when the value measured by the Redox sensor is less than 525 mV.
If no previous event explains this situation, try to resolve the problem by carrying out the following steps
in the order indicated (if the problem is not resolved by one step, proceed with the next):
•
Make sure that the Redox set point value is correct.
•
Check that the sensor is clean and undamaged.
•
Using a recently calibrated photometer, measure the concentration of free Chlorine in the pool water to see
if this value corresponds with the (abnormally low) Redox potential displayed.
•
Calibrate the Redox sensor
•
Check that filtration is running for long enough each day (at least 10 hours a day during the pool season)
•
Visually inspect the cell to verify that it is producing and that the electrodes are not covered in scale.
•
Check the stabiliser (Isocyanuric acid) concentration in the pool. It should be between 30 and 50 mg/l
•
Increase the concentration of free Chlorine and wait to see if this phenomenon reoccurs.
All these alarms are automatically reset when the parameter returns to within an acceptable range.
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.
