Using The Bünox 2+ Controller; Brief Description Of The Operating Principle - Bühler technologies BÜNOx 2+ Guía Rápida

BÜNOx 2+
We recommend the following steps to operate the unit in By-
pass mode for an extended period:
1. Reduce the converter temperature to approx. 100 °C. This
can extend the life of the cartridge.
2. Flush the converter cartridge with air or inert gas. Keep
the flushing time short, no more than a few minutes.
Flushing with air for too long of a period will significantly
reduce the cartridge life.
3. Then activate bypass mode.
The "BYPASS" LED will light up, the "CONVERSION NO
LED will not light up. At the same time the respective signal is
sent at the status output. The display will only additionally al-
ternate between showing the current temperature and the
status "bypa" after activating bypass mode from the menu.
For safety reasons this operating mode always takes priority
over normal mode; i.e.:
• Once switched via external control this must also be used
to switch the unit back to "conversion" mode. It cannot be
switched back via the controller menu.
• The same applies when activating bypass mode manually.
In this case it cannot be switched back externally via the
signal input (e.g. from a control room).
• This prevents inadvertently routing sample case through
the cartridge when replacing the cartridge.
6.3 Using the BÜNOx 2+ controller

6.3.1 Brief description of the operating principle

BX550019 ◦ 02/2020
Brief description of the operating principle:
The unit is operated using 5 keys. Their functions are:
But- Section
ton
Display
or
Menu
OK
Enter
Display
→ NO"
2
Menu
Enter
Display
Menu
Enter
Menu
ESC
Enter
F
or
Func
6.3.2 Lock Menu
Some menus can be locked to prevent inadvertently changing
the settings of the unit. This requires setting a code. For in-
formation on setting up or disabling the menu lock please
refer to "Global Settings" (toP) under menu item toP > Loc.
The menu lock is not enabled at the time of delivery, all menu
items can be accessed.
With the menu locked, only the following menu items will be
visible without entering the correct code:
Menu item
toP > unit
calc > t.rst
dir
Func
Functions
• Switches from the measurement display
to the main menu
• Selects the menu item displayed
• Applies an edited value or a selection
• temporarily switches to the alternative
measurement display (if option installed)
• Back
• Increase value or browse selection
• Note:
▪ Press button 1 x = changes para-
meter / value by one;
▪ Hold button = fast mode (numerical
values only)
▪ Display flashes: modified parameter/
value
▪ Steady display: original display/value
• temporarily switches to the alternative
measurement display (if option installed)
• Next
• Reduce value or browse selection
• Move one level up
• Return to menu
Changes will not be saved!
• Sets a menu to favourite.
(Note: The favourite menu will also be ac-
tivated with the menu locked!)
Explanation
Temperature unit selection (°C or °F).
Resets the calculated remaining life after re-
placing the converter cartridge.
Only with solenoid valves installed (optional):
Bypass or conversion mode selection.
Accessing the favourite menu
NOTICE! This menu may be one that is nor-
mally locked.
Fore more information, please refer to chapter
Adding a favourite menu.
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