Rola-Chem 554300 Dual ORP/pH Digital Controller - Manual (Page 13)

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.
4.3 ORP settings
The controller displays direct ORP readings and the sanitizer level controlled by this reading.
The ORP display indicates the effectiveness of the sanitizer; it does not directly correlate to a
chlorine ppm reading. Use a DPD test kit to measure the free chlorine. Adjust the ORP Set
Level to the desired level. If desired, set the OPR level to correspond to the OPR reading when
the water is balanced to the desired chlorine ppm.
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 cycle, high and
low alerts
4.4 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. Consider recalibrating the system after the initial 24 hours as the sensors
acclimate to the system. If the sanitizer level is too low or high, adjust the feed level up or
down in small increments, (for example 10mv to 25 mv increments) to lock in the desired
sanitizer level. However, prior to adjusting the ORP level, check pH level and
adjust/recalibrate the pH if necessary.
Note: the ORP reading is highly dependant 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: When using the 55400 controller with Rola-Chem pumps, the pump switch should be in
the ON position (not Timed or Off).
5.0 Troubleshooting-
A. 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.
Rola-Chem Digital Controller PN 554331 6/01/2012 Page: 13 of 20