Rola-Chem Digital Controller PN 554326 02/17/2014 Page: 8 of 20
On/off mode:
• To turn the controller “on”: press the MODE button.
• To turn the controller “OFF” :press & change MODE to pH or ORP and hold the MODE
button for two seconds until both displays read “OFF”. Release the MODE button and the
controller turns off and the displays go blank.
Note: Turning the controller “OFF” using the MODE button simply turns off the controller
functions, but does not turn off the power to the controller. The ‘FLOW’ lamp located at the
center of the controller is both the power light and a flow indicator when an optional flow
switch is used.
AUTO mode: This is normal operation mode. The controller operates the respective feeders
to automatically maintain the parameters set for both pH and ORP.
pH SET mode: This enables the six programming buttons to set the desired pH parameters.
NOTE: When scrolling through the set modes, to reverse the direction simply release the
button momentarily and press the button again.
Feed Once button: By pressing the feed once button, the pH feeder will feed and delay for
one complete feed cycle. See Feed Time Button for feed/delay times. If the Feed time is
set for “continuous feed” the manual feed will not operate.
Set Level button: Pressing the set level button once will display the current set level. To
change the set level, press and hold the set level button (which displays in 0.1 pH
increments) until the desired level is reached.
Feed Time: The feed times are displayed in seconds.
Each feed cycle includes a five (5) minute delay time. Pressing the feed time button allows
the user to scroll through the available feed times. Release the button when the desired pH
feed time is reached. To set the controller in constant feed, release the button when the
display reads “con”.
Note: Alert feature: If the pH reading is out of the pre-set alert range for more than ten (10)
minutes the pH red alert lamp will flash and the pH feeder will be disabled. The system will
automatically reset when the alert condition has been cleared by itself or by an operator.
Hi Alert: Pressing the High Alert button allows the operator to set or turn off the HI alert level
feature. As the button is pressed the pH readout will scroll through the available HI alert pH
levels (7.8 to 8.4 and off). Release the button when the desired level is reached. The Hi
Alert cannot be turned off in the BASE feed selection.
Low Alert: Pressing the Low Alert button allows the operator to set or turn off the Low alert
level feature. As the button is pressed the pH readout will scroll through the available Low
alert pH levels (6.8 to 7.3 and off). Release the button when the desired level is reached.
The Low Alert cannot be turned off in the ACID feed selection.
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