Maschinenbau
Werkzeuge
Laborgeräte
changing the filter bag.
2.
Open the clamp closure (3) and remove the closure cover (2) to lightly beat the filter bag (11).
Note
•
The ultra-fine filter should be replaced if the filter change Iamp (39) illuminates after
the automatic shut-off feature is triggered. See Section "6.3 Cleaning (replacement) of the
ultra-fine filter".
•
The pre-filter should be replaced if the filter change Iamp (40) illuminates after the auto-
matic shut-off feature is triggered. See Section "6.1 Replacing the filter bag".
3.6 Self test / initialization
(See Fig.6, Page 9)
A self-test is automatically executed (without user intervention) to avoid the clogging of
pipes/connecting hoses and ensure that the prescribed air volume is available at all extraction ducts.
Every time the device is switched on, the software automatically verifies whether the selected initiali-
sation interval has been exceeded. If so (factory setting: 5 hours), the self-test is started immediately
(but only after the unit is re-started).
Note
The self-test can also be performed on demand by holding down the
"Manual"
button; the unit
is switched on via the main switch.
During the initialisation phase, all extraction ducts are individually open and vacuumed at full extrac-
tion power for 10 seconds. In that period, we total vacuum in the ultra-fine filter chamber is measured
and displayed.
If the total vacuum in the ultra-fine filter chambers exceeds the allowable value set in the service
menu, the extraction unit is switched off with a fault display.
Note
If, after initialisation, allowable parameter values are not held, this is indicated by a flashing of
all
LEDs (2x red, yellow, green), accompanied by a periodic beep.
I n i t i a l i s i e r u n g
0 2 9 9 8
1
2
A) Test of channel no. 1.
The pressure drop is displayed con-
tinuously
I n i t i a l i s i e r u n g
0 3 0 0 4 0 K
2 0 1 5 5
1
2
B) Test of channel no.2
Pressure loss in channel
no. 1 does not exceed the allowable
value thus the display shows "OK".
Channel No. 1 remains open.
I n i t i a l i s i e r u n g
0 3 0 0 4 0 K
2 0 1 5 5 F e h l e r
1
2
C) End of the self-test
Extraction unit is turned off as a
result of an error.
Pressure loss in channel
no. 2 exceeds the allowable value thus
"Error" is displayed.
Fig. 7 Self-test procedure
3.7 Notes to monitoring the airflow volume
A warning is issued 10 seconds after the airflow volume falls below the
setpoint by 5%
.
In this case, the
yellow service LED (38) and both red filter change LEDs
(39 and 40)
flash and
the buzzer sounds intermittently
.
Caution
If the air flow volume falls
below the setpoint for over 60 seconds
, the extraction unit is
switched off (see Error No. 4 in the "Error messages" table on page 13)
