Maschinenbau
Werkzeuge
Laborgeräte
2
D-LE 255 S/D - 18.07.14 / Vers.: 1
5.2 Display - Messages and meanings
5.2.1 Display messages for "air volume" (l/s) control variant
2 2 m/ s
L / s
4 0
2 0
L / s
1
2
A) Two air channels are open (i.e.,
two stop valves are open)
1 1 m/ s
2 0
L / s
2 0 L / s
1
2
B) Only one channel is open (i.e.,
only one stop valve is open the
second stop valve is closed)
m/ s
1 1
2 0
L / s
2 0 L / s
1
2
C) A channel is open (i.e., a stop
valve is open and the second
is disabled in the user menu)
Fig. 12Display messages in "air volume" (l/s) control variant
m/ s
1 1
2 0
L / s
2 0 L / s
1
2
D1
D2
D3
D4
D5
D6
D7
D8
D10
D9
Fig. 13 Display message components in "air volume" (l/s) control variant
D
1.
Reference air speed in tube ID Ø48mm
(Extraction unit ID of the extraction fitting)
------------
D
2.
Air channel No. 1 is enabled
The arrow indicates that the connected dust-generating
device is detected and the extraction unit is opera-
tional. Simultaneously, the stop valve enables the air-
flow.
D
3.
Airflow volume in all tubes or hoses (to-
tal) l/s
Displays the total airflow volume currently being pro-
duced by the blower. If two extraction funnels are ac-
tive, the air volume will increase to 40 l/s (for 20 L/s air
basis, see message D5).
D
4.
Air channel No. 2 is disabled
Disabling an air channel is possible only from the user
menu.
D
5.
Air basis (l/s)
The air volume required for an extraction funnel is set
in the user menu, e.g. to 20 l/s If two extraction funnels
are simultaneously active, the air volume will increase
to 40 l/s, see message D3.
D
6.
Ultra-fine filter contamination degree
Allows a visual assessment of the ultra-fine filter con-
tamination.
D
7.
Pre-filter contamination degree
Allows a visual assessment of the pre-filter contamina-
tion.
D
8.
Symbol for pre-filter
------------
D
9.
Symbol for ultra-fine filter
------------
D
10.
Channel number
It is possible to connect two workplaces and, thus, two
