Rola-Chem RC554P pH Digital Controller - Manual (Page 10)

Rola-Chem Digital Controller PN 554236 02/17/2014 Page: 10 of 12
Low feed rates can cause the feeder to lag or feeding to be extended. A high feed rate
can result in too much pH chemical being added.
To verify the feed type (acid or base) adjust pH “set” level above the pH indicated on
display. The feed lamp should come on if the controller is in acid feed mode. If the
controller is in base feed, the feed lamp will come on if the pH indicated is below the pH
“set” level.
5.5 Reset to factory default
The controller can be reset to the default factory settings by using the steps below:
A. Turn the controller Off:
Press ‘MODE’ to turn ‘Auto’ light off.
Hold ‘MODE’ button until display reads “oFF”.
Release the ‘MODE’ button. Only the flow light should be on.
B. Simultaneously depress and hold ‘Set Level’ and ‘pH Calib’ buttons.
While they are depressed, press the Mode button.
The display will read ‘LD’ and then turn On.
C. Release the buttons.
D. The controller is now in test mode. Test mode shortens minutes to seconds.
E. Turn the controller Off again to exit test mode.
F. Turn the controller On to return to operating mode.
The last two steps are extremely important since this puts the controller back in
operating mode. If these two steps are not performed the controller will remain
in test mode and it will not operate properly.
6.0 Troubleshooting-
6.1 Chemicals not feeding
* FLOW light on Controller must be illuminated.
Check flow switch (manifold) if light is not on (Section 3.3.3)
* Feeder power and time switches must be in ‘ON’ position.
Check feeder by using alternate power source.
* Factory setting for feed time is 0.6 sec on with 5 minute delay.
Feeders may require longer feed time.
6.2 Displayed chemical level does not correspond to actual level
* Sensor (probe) is not attached connector.
* Sensor (probe) needs cleaning.
* Sensor (probe) needs replacing.