Owner`s manual

pH PRIORITY:
The CAT 4000 features a pH Priority setting which will inhibit ORP feed whenever
pH is greater than .2 pH from the setpoint. This feature provides an important
safeguard when sanitizers with a high pH (such as liquid chlorine) are used.
From the Configuration Setup Menu:
Press DOWN to find the pH Priority menu item.
Press ENTER to select pH Priority.
The current pH Priority Mode will be displayed:
Press UP or DOWN to enable or disable pH Priority.
Press ENTER to save your selection.
Press MENU to return to the Operating Menu.
The controller will automatically return to normal operating mode in 10 seconds.
pH FEED:
The CAT 4000 by default uses a time-based proportional feed algorithm which
enables the control of virtually any body of water without under-feeding or over-
shooting the setpoint. With some types of chemical feeders, however, it is beneficial
to disable proportional feed and feed on a fixed basis.
From the Configuration Setup Menu:
Press DOWN to find the pH Feed menu item.
Press ENTER to select pH Feed.
The current pH Feed setting will be displayed:
Press UP or DOWN to select Proportional or Fixed feed.
Press ENTER to save your selection.
Press MENU to return to the Operating Menu.
The controller will automatically return to normal operating mode in 10 seconds.
pH Feed
Proportional
pH Priority
Off