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B-3
LFA 3.1 / 4.1 MOBILE MANUAL /
AUTOMATIC
The LFA 3.1/4.1 Mobile Manual and Mobile Automatic
Extraction Arms are flexible fume extraction arms with
a 360° rotatable hood. Incorporated into the arms hood
is a throttle valve that can be fully opened, partially
opened or completely closed to control airflow at hood
opening. The hood features an airflow focus vane,
which directs the air into the hood.
The armsʼ balance system increases its durability and
stability. When the arms are raised, they are free to
move in any direction. Once the arms are positioned,
they are fixed into place. This makes repositioning the
arms simple, easy and effortless.
The extraction arms are made of solid, lightweight, 8
in. (203 mm) diameter dent and scratch resistant
tubes. They are provided with a spring balance system
for ultra-light, user friendly positioning of the arm.
FIGURE B.1
The K2633-2 and K2633-4 LFA 3.1/4.1 Mobile
Automatic arms contains an integrated Lamp & Arc
Sensor Kit in the hood. The 24V/35W halogen lamp
provides additional light to the workpiece. With the use
of a delayed arc sensor, the extraction fan will operate
automatically. The automatic start/stop utilizes a 20
second auto stop to help conserve energy and reduce
noise level.
PRODUCT COMBINATIONS
In order to operate the Mobiflex 200-M(/HE) Base Unit,
selection of following product is required:
• K2633-1 (1) LFA 3.1 Mobile Manual (10 ft. extraction
arm); or
• K2633-3 (1) LFA 4.1 Mobile Manual (13 ft. extraction
arm); or
• K2633-2 (1) LFA 3.1 Mobile Automatic (10 ft. extrac-
tion arm with integrated Lamp & Arc Sensor Kit); or
• K2633-4 (1) LFA 4.1 Mobile Automatic (13 ft. extrac-
tion arm with integrated Lamp & Arc Sensor Kit)
MOBIFLEX 200-M(/HE) MOBILE FILTER UNIT & LFA 3.1 / 4.1 EXTRACTION UNIT
OPERATION
• K1668-3 (1) Hose and Hood Set instead of extraction
arm
OPERATION
The air which contains welding fume is captured,
extracted, and filtered, before being recirculated back
into the work environment. First, the welding fume is
extracted through an adjustable fume extraction arm
by the internal extraction fan.
Second, as the welding fume enters the Base Unit, it
passes through the prefilter in the center of the
LongLife filter cartridge. The prefilter separates larger
particles, debris and most sparks prior to the welding
fume entering the LongLife filter. Third, the air passes
from the inside through the LongLife filter cartridge.
Fourth, after passing through the LongLife filter, the fil-
tered air exits the Mobiflex 200-M(/HE) Base Unit via
the outlet grid at top of the filter housing.
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The control panel contains the following controls:
See Figure B.2.
A. Power switch OFF
B. Power switch ON
C. Filter Maintenance Indicator ("FILTER CLOGGED")
A
ATTENTION
Never use the Mobiflex 200-M(/HE)
Base Unit without extraction arm or
Hose and Hood Set.
WARNING
Worker exposure level should be
checked upon installation and peri-
odically thereafter to be certain it is
within applicable federal, state
and/or local regulations and guide-
lines (i.e. OSHA PEL and ACGIH
TLV limits in the U.S.).
FIGURE B.2
B
C
B-3
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