IPS Controllers M920CA Owner's Manual page 24

M920 & M920W
CA
i. If the Dose Time is set to a timed cycle, the Over Timer
will count timed feed cycles. Every time the set level is
reached the Over Timer will reset the count. If the set
(default is 60 cycles) Over Timer cycle is reached, the ORP
digital display will flash, and the ORP output relay will de-
energize.
3. Selectable range in timed feed: OFF, 20 – 100 feed cycles.
Selectable range in continuous feed: OFF, 20 – 180 minutes.
When the Dose Time is changed from either timed or
continuous feed, the Over Timer is reset to Default.
4. Turning off the Over Timer will void any NSF Certification and
is not recommended for safety reasons.
e. High Alert
1. Default: 900 mV
2. Selectable range: 650 mV to 900 mV, no OFF. A high alert will
occur if the ORP level remains above the High Alert level for
10 continuous minutes, and will automatically turn off the
High Alert when the ORP level falls below the high alert level
for 1 continuous minute. During High Alert, the ORP1 dose
output will be disabled.
f. 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 continuous minutes, and will automatically turn off the
Low Alert when the ORP level rises above the low alert level
for 1 continuous minute. During Low Alert, the ORP1 dose
output will be disabled.
g. FAC Cal
1. Default is .0 and will not change if controller is not communi-
cating with the monitoring website.
2. Calculated Free Available Chlorine (ppm) will display from
website and can be calibrated in .1 increments (+/-). When
calibrating down, arrow past "OFF" or the PPM display will be
turned off.
pH/Dual ORP Controller Owner's Manual
CA
22