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3.10 CALIBRATION
Lets you set the calibration value of the sensor probe to match the values of your hand
check tests. Use the + and – buttons to set.
pH Calibration Display
3.11 CALIBRATING PH
Note:
A chemical test kit must be purchased separately and utilized for calibration.
Note:
IF THE pH IS BELOW 7.4 OR ABOVE 7.6 THE ORP READINGS WILL BE
SIGNIFICANTLY AFFECTED. If the pH is high, the ORP will not go up as fast as it should
when chlorine is added. This can lead to chlorine overfeeding. If the pH is low, the chlorine
will be very active and hard to manage with ORP control.
Measure the pool water pH using a standard hand measurement test kit. To calibrate the pH
sensor press the pH menu button until you see the pH
‘CAL’ibration
window (as shown
above). Enter the current hand calibration measurement values by pressing on the + button to
increase the value and press the – button to decrease the value.
3.12 CALIBRATING ORP
WARNING: The pH MUST be at set point, the pH calibration (explained above) MUST be
complete and the pH feed pump should be operating normally and maintaining a constant
pH before calibrating ORP.
To calibrate the ORP sensor: Hand feed Cl into the pool until the PPM level is at the
desired control point. Make sure your ORP set point is set. Measure the pool water PPM
Cl using a standard hand measurement test kit. Wait until the pH feed pump has stopped
feeding and pH is at set point. Now calibrate the ORP sensor by pressing the ORP menu
button until the display has CAL in the left window, calibrate the ORP reading to match
the ORP set point by pressing on the + button to increase the value and press the –
button to decrease the value.
NOTICE: The pH must be between 7.4 and 7.6 when calibrating the ORP sensor. (See
‘Calibrating pH, above). If the pH is outside of these limits when calibrating the ORP
sensor, the chlorine feed and the ORP reading may be incorrect.
pH
6.95
ORP
pH pH Flow ORP ORP
FEED ALARM
ALARM FEED
