IPS Controllers M920 User Manual

M920 & M920W pH/Dual ORP Controller Owner’s Manual
21
g. pH Cal
1. Use to adjust pH to manually tested value.
2. Maximum increase/decrease is 0.9 pH within the 6.0 to 8.4
display window.
3. ORP1 standby
Note:Whileinthismode,theyellowORP1standbyLEDwillilluminate,
boththepHandORPdigitaldisplayswillshowdashes,andallAuto
funconswillbedisabled.UsetheUporDownarrowbuonstothe
letoincreaseordecreasethefunconvalue.
a. Set Level
1. Default: 650 mV
2. Selectable range: 400 mV to 900 mV (in 5 mV increments)
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.

IPS Controllers M920 Specifications

General

Brand	IPS Controllers
Model	M920
Category	Controller
Language	English