ROLA-CHEM Digital Controller PN 554135 5/04/2017 Page: 13 of 20
controller MODE button until the pH LED is lighted (refer to the description of controls). Then
use pH CALIB button to adjust reading to match known pH value of sample. It may take up
to 24 hours for the sensors to acclimate to the system so recalibrate 24 hours after the first
calibration. The pH sensor calibration should be checked every four to six weeks.
5.4 ORP settings
Press and release the controller MODE button until the ORP LED is lighted (refer to the
Description of Controls section). Then select the desired Set Level, Feed Time and Hi and
Low Alerts.
The ORP display indicates the effectiveness of the sanitizer; it does not directly correlate to
a chlorine ppm reading. To determine your ORP set level, manually adjust and balance the
pool to be within acceptable ranges. Use a DPD test kit to confirm the free chlorine level.
Use the ORP reading of the balanced pool as your ORP set level.
5.5 Operating mode
Press and release the MODE button until the AUTO LED is lighted. This is the operational
mode for the controller. The controller must be in this mode for the feeders to maintain the
desired parameters.
Note: When using the RC554XP or 554000 controller with ROLA-CHEM pumps, the pump
switch should be in the CONTINUOUS position (not Timed or Off).
If the sanitizer level is too low or high, adjust the ORP set level up or down in small
increments (for example 10mV to 25 mV increments) to lock in the desired sanitizer level.
Note: The ORP reading is highly dependent on both the pH and the cyanuric acid levels.
Both of these variables must be kept within acceptable ranges to maintain an acceptable
relationship between the ORP and the ppm of the sanitizer.
Note: Low feed rates can cause the feeder to lag or feeding to be extended. A high feed
rate can result in too much chemical being added.
If using time feed cycle, the feed lamp will flash during the feed time and be lit continuously
during the delay time of the feed cycle. If over feeding is occurring, consider using a shorter
feed cycle.
In Continuous feed, the feed lamp will flash while feeding.
The pump will not activate when an alert lamp is on indicating readings below or above the
alert settings.
