IPS Controllers M920 User Manual

M920 & M920W pH/Dual ORP Controller Owner’s Manual
23
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 med dose cycle mode, the dose LED will
ash while dosing and 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: OFF. 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 using the mode buon to cycle out of auto
and then back to auto mode.
2. The Overfeed mer is interlocked with the Dose Time
selecon.
3. 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 ORP2 output relay
will de-energize. ORP2 will not ash ORP digital display if
ORP2 overfeed occurs).
4. Selectable range in med feed: OFF, 20 – 100 feed cycles.
Selectable range in connuous feed: OFF, 20 – 180 minutes.
When the Dose Time is changed from either med or con-
nuous feed, the Over Timer is reset to Default.

IPS Controllers M920 Specifications

General

Brand	IPS Controllers
Model	M920
Category	Controller
Language	English