Pentair AK110 - Calibrating Calculated Ppm; Manual Relay Control

29
ACU-TROL
®
AK110 Chemical Controller Installation and User's Guide
Calibrating ORP
EXAMPLE 1: The default set point is 700, the PPM
hand measurement is 1.0 (2.0 PPM desired), and the current
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.
EXAMPLE2:Fromexample1changethehandmeasurementto4.0PPMwithORPreading700mV.Fromtheabove
table the hand PPM is high and the ORPisbelowthesetpoint.TheORPshouldbecalibratedto700+(4.0–2.0)*10=
720.To compare ORP measurements to PPM measurements per actual pH readings refer to the calculated PPM chart on
page 131.
Calibrating Calculated PPM
If you have an ORP sensor module and Calculated PPM mode selected. You can calibrate the Calculated PPM in the
following manner. Measure the PPM using a standard test kit. To calibrate the PPM, move the cursor to PPM and press
ENTER. Enter the value obtained from the test kit in the value entry screen. Press ENTER again to save your changes.
MANUAL RELAY CONTROL
Display Screens
Position the cursor to the left of the status word and press
ENTER
to toggle the relay on and off. The length of time the
relaystaysonisadjustableintheprogramming.Whenthe
relay is toggled to OFF the relay immediately goes back to
automatic control and in some cases may immediately turn
back
ON.
WARNING
Always make sure the pH is at the pH setpoint and PPM is greater than
1.5 PPM before calibrating calculated PPM.
Always control at PPM levels greater than 1.0 PPM when using
ORP sensors.
NOTE
You can enter the password 9003 to see the ORP and adjusted ORP being
used for calculated PPM. These ORP values will only be displayed for four
(4) seconds.
!
Main Status, cursor
at pH Relay
pH 7.67>OFF 7.50s
ORP 490 -OFF 700s
_____
69.0f SW1OFFSW2OFF