Owner`s manual

NORMAL OPERATING MODE:
During normal operating mode, the display will indicate sensed pH, ORP, Flow
Rate (with optional digital flow sensor) and a status line which alternates between:
A) “System OK” or a list of any alarm conditions, and
B) A graph indicating sensed pH and ORP vs- setpoint values.
The following is a typical display during normal operating mode:
TO CHANGE THE BRIGHTNESS OF THE DISPLAY:
The display intensity can be changed to accommodate comfortable viewing in a
variety of lighting circumstances.
While in normal operating mode:
Press UP to increase display intensity.
Press DOWN to decrease display intensity.
TO ENTER THE OPERATING MENU:
The operating menu contains selections which are likely to be changed on a routine
basis, and therefore are easily accesed.
While in normal operating mode:
Press MENU. The following will be displayed:
TO CHANGE THE pH SETPOINT:
The CAT 4000 is programmed at the factory with a default setpoint of pH 7.5. CAT
Controllers considers this to be ideal for pool and spa applications. The following
steps enable the selection of a different setpoint.
While in normal operating mode:
Press MENU.
Select pH setpoint by pressing ENTER.
The current pH setpoint will be displayed:
Press UP or DOWN to select the desired pH.
Press ENTER to save your selection.
The controller will automatically return to normal operating mode in 10 seconds.
pH 7.5 ORP 650
System OK
Operating Menu
pH Setpoint
pH Setpoint
7.5 pH