IPS Controllers M790 Owner's Manual page 21

M790 pH/ORP Controller Owner's Manual
3. Changing Low Alert setting
i. Press Mode button to enter ORP standby
ii. Press and hold Mode button and then press Set Level
iii. Use DoseTime button to increase/decrease ORP Low
iiii. When finished, press Mode button to continue
f. pH Cal disabled
4. Flow
a. The controller and flow cell are shipped pre-mounted to a
small (16" x 12") or large (24" x 19") ABS plastic board. The
integrated flow switch is pre-wired to the controller.
b. The flow switch must be installed for safety reasons to
prevent dosing chemicals when there is no flow in the
circulation piping.
5. Factory defaults
To return the controller to the factory defaults, place the control-
ler in Standby Mode. Turn off the controller by holding down the
Mode pushbutton. Press and hold both the Set Level and pH Cal
pushbuttons, and then press the Mode pushbutton. Both the pH
and ORP displays will show "Ld". The controller will be returned
to the factory default functions, and be placed in the test mode.
Return the controller to full operation by turning off the controller
with the Mode pushbutton. Turn the controller on again by press-
ing the Mode pushbutton. Note: Failure to complete this action
will leave the controller in the test mode.
button (red ORP alert LED will come on) release both
buttons. You are now in Set Alerts mode.
Alert
Figure 4: Flow Switch Jumper
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