Rola-Chem 554200 pH Digital Controller - Manual (Page 7)

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 is both the power light and a flow indicator when an optional flow switch is
used.
• When Flow light is on and Auto light is off, levels can be set.
Set level button: Pressing the set level button once will display the current set level. To
change the set level, press the set level button 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 select available feed times. Release the button when the
desired feed time is reached.
To set the controller in constant feed, release the button when the display reads
“con”.
pH calibrate: This button allows calibration of the pH sensor to a buffer or sample tested
with a test kit. Press the pH CALB button to set the pH reading to the desired pH
level.
AUTO mode: This is normal operation mode. The controller operates the feeder to
automatically maintain the parameters set for pH.
3.0 Installation
3.1 Locating the controller
Install the chemical pump/ feed systems as shown in manuals included with the
feeders. Before installing the controller, it is important to do a site assessment to
consider where and how you will mount the unit. The controller should be
mounted on a wall or other surface within eight feet of the feeder, at least ten feet
away from the edge of the water, and within six feet of the GFCI power source.
Never mount a controller above or near an acid tank.
See appendix for typical feed
system schematics.
3.2 Mechanical Installation
Once the site is selected, obtain screws or anchors to securely mount the controller
on the wall or a panel.
Screw slots are provided in the controller enclosure. Access to flow switch wires,
acid/base changes and terminals is located on the back of the enclosure.
Rola-Chem Digital Controller PN 554212 6/01/2012 Page: 7 of 12