Description Of Functions - Bühler technologies CU-EMA+ Notice De Montage

CU-EMA+
DANGER
Toxic, corrosive gases, sample gas can be harmful.
Sample gas/condensate may be hazardous to health.
a) Purge the device with inert gas or air (only when non-
flammable gases inside the gas path) for some time be-
fore connecting the lines or performing maintenance.
b) If necessary, ensure safe gas discharge.
c) Switch off the gas supply before performing mainten-
ance and protect from opening inadvertently.
d) Wear suitable protective equipment when performing
maintenance to protect yourself from toxic/corrosive
gases/mediums.
e) Also protect yourself with a suitable gas sensor when as-
phyxiant gases such as N2 occur in the gas path.
DANGER
High pressure, danger due to gases being discharged at
high pressure!
a) Disconnect the device from the system pneumatics.
b) Release pressure from the lines before beginning work.
c) Secure the equipment from accidentally being reconnec-
ted to the pneumatic supply
DANGER
Sample gas can be harmful.
Always install the sample gas outlet in a location where per-
sons will not be harmed. Ensure the lines and connections are
leak-proof.
DANGER
Gas emanation
Danger to life due to gas leaks if used incorrectly.
a) Always use the device as specified in this manual. Ob-
serve the process conditions.
b) Gas connections must be connected with suitable con-
nectors and be connected correctly.
c) The gas connection must be checked for leaks. Secure the
lines adequately.
5 Operation and control
NOTICE
Only operate the device with the door closed and within the
specifications!
After starting the device via circuit breaker FC43, the display of
the sample gas cooler will show the software version, then the
block temperature. The display S2 will stay on until the block
temperature has reached the preset value (± adjustable alarm
range). The status contact is in the Alarm position.
Once the target temperature range has been reached and the
moisture detector does not report an error, the temperature
will continuously be displayed and the status contact switches
over. With the optional regulated heated line, the temperat-
ure signal will also be sent to the status contact.
BX440029 ◦ 10/2020
If the display flashes during operation or an error message ap-
pears, please refer to item "Troubleshooting".
Please refer to the data sheet for performance data and max-
imum ratings.

5.1 Description of functions

The sample gas cooler is controlled by a microprocessor.
The programmable display shows the block temperature in
the selected display unit (°C/°F) (factory preset °C). Applica-
tion-specific settings can easily be configured guided by the
menu, using the 5 buttons. For one, this applies to the target
outlet dew point, which can be set from 2 to 20 °C (36 to 68 °F)
(factory setting 5 °C/41 °F).
And then the warning thresholds can be adjusted for low and
excess temperature. These are set relative to the outlet dew
point τ setting. For the low temperature the range is τ
a
3 K (at a minimum 1 °C cooling block temperature), for the ex-
cess temperature the range is τ
for both values are 3 K.
The flashing and an LED on the display unit plus the potential-
free contact indicate the warning range has been overrun or
underrun (e.g. after switching on) plus the potential-free con-
tact.
5.2 Use of menu functions
Brief description of the operating principle:
The unit is operated using 5 keys. Their functions are:
But- Section
ton
Display • Switches from the measurement display
to the main menu
or
Menu • Selects the menu item displayed
OK
Enter • Applies an edited value or a selection
Display • temporarily switches to the alternative
measurement display (if option installed)
Menu • Back
Enter • 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
Display • temporarily switches to the alternative
measurement display (if option installed)
Menu • Next
Enter • Reduce value or browse selection
Menu • Move one level up
ESC
Enter • Return to menu
Changes will not be saved!
• Sets a menu to favourite.
F
(Note: The favourite menu will also be ac-
or
tivated with the menu locked!)
Func
-1 to -
a
+1 to +7 K. The factory settings
a
Functions
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