B-5
OPERATION
B-5
MOBIFLEX 400-MS(/HE) & LFA 3.1/4.1
MOBILE AUTOMATIC
See Figure B.2
and Figure B.4
• Press the power switch ON (
See Figure B.2 item B
)
to turn power to the unit.
• Using the handle (See Figure B.4 item A), position
the hood of the extraction arm in the desired position
at approximately 6-12 inch (15-30 cm) from the
source of fume.
• If desired: turn on the halogen lamp using on/off
switch (See Figure B.4 item C).
• Open the throttle valve (See Figure B.4 item B).
• Start welding.
Due to the built-in Arc Sensor, the machine will start
automatically. After finishing welding, the machine will
automatically stop after approximately 20 seconds.
• Press the power switch OFF (
See Figure B.2 item A
)
to interrupt power supply.
MOBIFLEX 400-MS(/HE) & LFA 3.1/4.1
MOBILE AUTOMATIC (MANUAL START)
Manual start of the Lamp & Arc Sensor Kit is recom-
mended for TIG welding or in case the Arc Sensor is
unable to detect the arc due to weld position.
* UV from TIG welding is less than other weld process-
es resulting in arc sensor perhaps not detecting weld.
See Figure B.2
and Figure B.4
• Press the power switch ON (
See Figure B.2 item B
)
to turn power to the unit on.
• Using the handle (See Figure B.4 item A), position
the hood of the extraction arm in the desired position
at approximately 6-12 inch (15-30 cm) from the
source of fume.
• If desired: turn on the halogen lamp using on/off
switch (See Figure B.4 item C).
• Open the throttle valve (See Figure B.4 item B).
• Turn on the machine using the on/off switch (See
Figure B.4 item D).
• Start welding.
• Turn off the machine approximately 20 seconds after
finishing welding using the on/off switch (See Figure
B.4 item D).
• Press the power switch OFF (
See Figure B.2 item A
)
to interrupt power supply.
AUTOMATIC FILTER CLEANING
SYSTEM
CONTROL LIGHT:
CLEANING
During normal operation (i.e. with a clean, non-saturat-
ed filter cartridge), the Mobiflex 400-MS(/HE) functions
automatically. As soon as a minimum airflow has been
reached as a result of the clogging, the pressure dif-
ference switch activates the RotaPulse compressed air
cleaning system which subsequently cleans the filter
using controlled jets of compressed air. The particulate
then falls into the dust tray.
During the automatic cleaning process the control light
(
See Figure B.2 item D
) is on (“CLEANING”). The
cleaning system stops when the airflow is sufficient
again.
This procedure is called online cleaning.
When no welding takes place for the automatic clean-
ing process, the fan will start running for 30 seconds
after every four compressed airjets to check the pres-
sure difference. This happens 15 times maximum.
When the airflow hasnʼt reached the required airflow
rate after 60 compressed airjets, the control light will
change into the “ALARM” mode.
• In this case, proceed with Control light: ALARM pro-
cedure.
MOBIFLEX 400-MS(/HE) BASE UNIT & LFA 3.1/4.1 MOBILE MANUAL/AUTOMATIC
FIGURE B.4
I
O
C
D
B
A
Due to the parallel connection,
extraction fan on / off can be
arranged in three different ways:
• Automatically by Arc Sensor
• Manually by on/off switch at the
hood of the extraction arm
• Manually by push button switch fan on/off on the
machine
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ATTENTION
