IPS Controllers M920 - Maintenance

M920 & M920W pH/Dual ORP Controller Owner’s Manual
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5. When the Dose Time is changed from either med or
connuous feed, the Over Timer is reset to Default.
6. Turning o the Over Timer will void any NSF Cercaon and
is not recommended for safety reasons.
e. High Alert controlled by ORP1.
f. Low Alert controlled by ORP1.
g. pH Cal disabled
5. Temp Mode
a. Water Temperature will be displayed if the temperature sensor
is installed. Display will show the water temp when Temp mode
is entered and will not change while displayed.
b. Temperature can be calibrated by using the Up/Down arrow
keys (+/- 10 degrees).
c. Display can be changed from Fahrenheit to Celsius by pressing
the pH Cal buon.
6. Flow
a. The controller and ow cell are shipped pre-mounted to a small
(16” x 12”) or large (24” x 19”) ABS plasc board. The integrated
ow switch is pre-wired to the controller.
Figure 5: Flow Switch Terminal
b. The ow switch must be installed for safety reasons to prevent
dosing chemicals when there is no ow in the circulaon piping.
c. Prior to installaon, the controller operaon can be tested by
lng the populated mounng board unl the controller’s green
light turns on (ow switch magnet at the switch’s top).