Orp Troubleshooting; Using The Test Strip - Pentair AK110 Installation And User Manual

Hand PPM ORP Display
Low
Perfect
High
EXAMPLE: The default set point is 700, the PPM hand measurement is 1 .0 (2 .0 PPM desired), and the cur-
rent display shows a measurement of 690 mV . From the above table the hand PPM is low and the ORP is
below the set point . The chemical feed times are not high enough for the ORP to reach the set point and
should be increased .
To compare ORP measurements to PPM measurements per actual pH readings refer to the calculated PPM
chart on page 131 .
1 . Remove all wires from the sensor card .
2 . Insert test strip into the green terminal bar on the sensor card .
Match the pH test strip side to the sensor card side
3 . Reset the calibrations with the test strip installed .
4 . Call Acu-Trol Technical Support at 800-273-4667 with the sensor readings if your results do not match
the following readings:
ORP 90350-28A
PPM 90350-35A
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ACU-TROL AK110 Chemical Controller Installation and User's Guide
®

ORP Troubleshooting

ORP Calibration Actions
Above Set point
At Set point
Below Set point
Above Set point > 6
At Set point ±5
Below Set point >6
Above Set point
At Set point
Below Set point

Using the Test Strip

pH = 7.65-7.75 ORP = 485-500 Temp = 68.0-71.0
pH = 7.65-7.75 Color = TBD
Action
Cal to below set point: 10mV per each PPM
Check flow and/or clean sensor .
Cal to below set point: 10mV per each PPM
May need to increase chemical feed times .
May need to decrease chemical feed times .
Calibrate to the set point .
No changes
Calibrate to the set point .
Decrease chemical feed times .
Cal to above set point:10mV per each PPM
Cal to above set point: 10mV per each PPM
Check flow and/or clean sensor .
Temp = 68.0-71.0