IPS Controllers M920CA Owner's Manual page 25

M920 & M920W
CA
3. Value is calculated using pH, ORP, Temp, and CYA. *FAC (PPM)
calculation is not certified to NSF 50.
4. ORP2 standby
Note: While in this mode, the yellow ORP2 standby LED will illuminate,
both the pH and ORP digital displays will show dashes, and all Auto
functions will be disabled. Use the Up or Down arrow buttons to the
left to increase or decrease the function value.
a. Set Level
1. Default: 640 mV
2. Selectable range: 400 mV to 890 mV (in 5 mV increments),
cannot be set for less than 10 mV below the ORP1 set level.
b. Dose Time
1. Default: OFF. In the timed dose cycle mode, the dose LED will
flash while dosing and illuminate steadily during the delay
portion of the timed cycle. In continuous dose mode, the
dose LED will flash while dosing, and dosing will continue
until ORP is 10 mV above Set Level.
2. Selectable range: OFF, CON (continuous), and Timed
(10 to 900 seconds ON)
c. Delay Time
1. Default: OFF. Delay time of 5 minutes between feed cycles
(timed feed only). After dose time, the controller will wait
(delay) for the specified minutes before checking the current
level and dosing again if necessary.
2. Selectable range: 1 - 99 minutes.
d. Over Timer
1. Default: ON. The Over Timer does not automatically reset. It
must be reset by using the mode button to cycle out of auto
and then back to auto mode.
2. The Overfeed timer is interlocked with the Dose Time
selection.
pH/Dual ORP Controller Owner's Manual
CA
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