Maschinenbau
Werkzeuge
Laborgeräte
2
D-LE 255 S/D - 18.07.14 / Vers.: 1
Note
Every time you switch on the extraction unit, the airflow volume control remains off
for approximately 30 seconds
3.8 Setting the extraction unit parameters
The extraction unit can be operated under two sets of rules:
-
Control variant "
Air volume
"(L/s)
-
Control variant "
Air speed
" (m/s)
Users can toggle between modes by pressing and holding the "
Air "(41)
button for five seconds.
Furthermore, the extraction unit can operate in two modes:
•
Automatic mode "
Auto
"
•
Manual mode "
Manual
"
3.8.1 Manual mode (Manual)
In
manual mode
, the extraction unit can only be operated under the "air volume" (L/s) control variant.
In this mode, all available extraction channels are open.
Note
Any unnecessary channels can be disabled via the user menu.
s
L /
Manual
Auto
/s
L
0
3
/ s
0 m
2
1
MF
10
60
Air
2
D-LE 255 S
15
20
35
37
38
39
40
22
23
46
42
41
44
43
45
36
23a
41a
Fig.8 Panel in manual mode
After pressing the "Manual" button, the LED (23a) illuminates green. Thus, the extraction unit is put
into operation immediately. In manual mode, the "Air" (41a) button LED illuminates as the extraction
unit necessarily adopts the
"air volume" (l/s)
control variant.
Set the desired air volume with the controller (36). The set air volume is shown on the display. Air
volume is automatically regulated and remains constant regardless of the filter contamination degree.
Note
The controller (36) can be used to set the air volume of the fan from 10 l/s up to its maximum
value.
3.8.2 Automatic mode (Auto)
In
automatic mode
, the extraction unit can be operated under two control variants:
"Air volume" (l/
s)
and
"Air speed" (m/s)
