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ACU-TROL
®
AK110 Chemical Controller Installation and User's Guide
WARNING
Always make sure the pH is at the set point before calibrating ORP. Always control
at PPM levels greater than 1.0 PPM when using ORP sensors.
IMPORTANT:
For best results the ORP should be at the ORP set point when calibrating.
For best results the PPM should be at the desired level when calibrating ORP.
Calibrating ORP
Measure the current PPM
using a standard test kit. Calibrating ORP is intuitive and takes a little practice. The following
table can be used to improve the accuracy of the calibration. Follow the recommendations in the table and within a few
days the PPM should be on track. The values of interest are:
Measured PPM: The hand measurement.
Desired PPM: The actual PPM that is desired in the pool.
ORP: The value of ORP that is displayed on the screen.
ORP Set point: The value of ORP that the Controller is trying to achieve.
Hand PPM ORP Display Action
Low
Above hand
check
Calibrate to hand check measurement: 10mV per each
PPM Low
At hand check
Review Setpoints: May need to increase chemical feed
times
Below hand
check
Calibrate to hand check measurement: 10mV per each
PPM Low
Perfect
Above hand
check
May need to decrease chemical feed times & calibrate to
hand check
At hand check No changes
Below hand
check
Calibrate to the hand check
High
Above hand
check
May need to decrease chemical feed times & calibrate to
hand check
At hand check Lower the set point
Below hand
check
Calibrate to hand check measurement: 10mV per each
PPM High
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