ii. Press and hold Mode buon and then press Set Level
buon (red ORP alert LED will come on) release both
buons. You are now in Set Alerts mode.
iii. Press Set Level buon again to display current High
Alert
iv. Use Up/Down buon to increase/decrease ORP High
Alert
v. When nished, press Mode buon to connue
e. Low Alert
1. Default: 100 mV
2. Selectable range: OFF, 100 mV to 640 mV. A low alert
will occur if the ORP level remains below the Low Alert
level for 10 connuous minutes, and will automacally
turn o the Low Alert when the ORP level rises above
the low alert level for 1 connuous minute. During Low
Alert, the ORP1 dose output will be disabled.
3. Changing Low Alert seng
i. Press Mode buon to enter ORP standby
ii. Press and hold Mode buon and then press Set Level
buon (red ORP alert LED will come on) release both
buons. You are now in Set Alerts mode.
iii. Press Dose Time buon to display current Low Alert
iv. Use Up/Down buon to increase/decrease ORP Low
Alert
v. When nished, press Mode buon to connue
f. pH Cal disabled
5. Flow
a. The controller and ow cell are shipped pre-mounted to a
small (16” x 12”) or large (24” x 19”) ABS plasc board. The
integrated ow switch is pre-wired to the controller.
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M720 pH/ORP Controller Owner’s Manual