IPS Controllers M820 User Manual

b. Dose Time
1. Default: 10-second ORP feed relay energized and 5
minutes ORP feed relay de-energized (med dose me).
In the med dose cycle mode, the dose LED will ash
while dosing, and will illuminate steadily during the
delay poron of the med cycle. In connuous dose
mode, the dose LED will ash while dosing, and dosing
will connue unl ORP is 10 mV above Set Level.
2. Selectable range: OFF, CON (connuous), and Timed
(10 to 900 seconds ON)
c. Delay Time
1. Default: Delay me of 5 minutes between feed cycles
(med feed only). Aer dose me, the controller will
wait (delay) for the specied 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 automacally
reset. It must be reset by turning the controller o, then
on.
2. The Over Timer is interlocked with the Dose Time
selecon.
i. If the Dose Time is set to a med cycle, the Over
Timer will count med feed cycles. Every me 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 ash, and the
ORP output relay will de-energize.
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M820 pH/Dual ORP Controller Owner’s Manual

IPS Controllers M820 Specifications

General

Brand	IPS Controllers
Model	M820
Category	Controller
Language	English