Rola-Chem 554200 pH Digital Controller - Manual (Page 9)

3.3.3 Acid/Base Feed Selection:
The controller has a terminal shipped with a ‘jumper’ used to select acid or base
chemical. The jumper can be moved to change type of feed. Factory setting is acid feed.
Acid feed mode will feed chemical when the pH reading is above the pH set point.
4.0 Operation
4.1 Startup
Do not add chemicals to the feeders until all
start-up operations are completed. Using a
DPD test kit, manually adjust and balance the pool to acceptable ranges. Automation
should be used to maintain chemical levels, not to balance a pool that is out of
acceptable ranges. With the controller in the OFF Mode, turn the filter pump on and
check for leaks in the system and flow through the flow cell. The flow lamp will be
illuminated if the controller has power, it is connected to the flow switch and there is
adequate flow. If a flow switch is not attached, the flow lamp will be illuminated if there
is a jumper in the flow cell terminal. It is recommended that a flow switch always be
used.
4.2 pH setting
Press and release the controller MODE button until the AUTO light is off. Then select
the desired set level and feed time cycle.
4.3 pH Calibration
Always calibrate using water from the sample port of the flow cell, unless using preset
buffer solution. It may take up to 24 hours before the sensors acclimate to the system so
recalibrate 24 hours after the first calibration. The pH sensor can drift slightly over time
and calibration will offset this drift. The pH sensor should be calibrated every four to six
weeks.
4.4 Operating mode
Press the MODE button until “AUTO” is lighted. This is the operational mode for the
controller. The controller must be in this mode to maintain the desired parameters.
Timed feed settings: T
he feed lamp will flash during the feed time and be constant
during the delay time of the feed cycle. Power will be supplied to feeder until set-point is
reached and feed cycle is completed. If over feeding is occurring, consider shorter feed
cycle.
Constant feed setting: T
he feed lamp will flash while feeding. Power will be supplied to
feeder until set-point is reached.
The feed lamp will not activate when the pH alert lamp is on (pH is below or above the
alert settings).
Rola-Chem Digital Controller PN 554212 6/01/2012 Page: 9 of 12