Rola-Chem 554300 Dual ORP/pH Digital Controller - Manual (Page 10)

Feed Once: same as ORP1.
Set Level: same as OPR 1. Note that ORP2 will be 10mV or more below the ORP1.
Feed Time: same as OPR1
3.0 Installation
3.1 Locating the controller
Install the chemical pump and erosion feed systems as shown in manuals included with the
feeders. The controller may need to be set for the particular feeder system used. 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 (mounting screws are not provided with
controller) to securely mount the controller on the wall or a panel. Install a screw in the
wall/panel where the top center of the controller is to be located. Leave ¼ inch of the screw out
of the wall to hang the controller from the keyhole located on controller’s back. Remove the
power panel access cover and install screws through the two holes located at the bottom left and
right corners of the controller. Leave the power access panel cover off.
Rola-Chem Digital Controller PN 554331 6/01/2012 Page: 10 of 20
In sta lle d screw
K ey h o le
W a ll
C o n tro ller w ith p o w er p an el access co v er rem o v ed
T w o screw s m o u n ted v ia th e P o w er p an el access
D o n o t rem o v e fro n t p an el