Lincoln Electric Mobiflex 400-MS - Manual (Page 15)

B-1 OPERATION B-1
Read and understand this entire section before oper-
ating your Mobiflex 400-MS.
SAFETY INSTRUCTIONS
Do not attempt to use this equipment until you have
thoroughly read all operating and maintenance man-
uals supplied with your equipment and any related
welding machine it will be used with. They include
important safety precautions, operating and mainte-
nance instructions and parts lists.
ELECTRIC SHOCK can kill.
•Do not touch electrically live parts such
as output terminals or internal wiring.
•Insulate yourself from the work and
ground.
•Always wear dry insulating gloves.
------------------------------------------------------------------------
WELDING SPARKS can cause fire or
explosion.
•Keep flammable material away.
•Do not weld upon containers which
have held combustibles.
------------------------------------------------------------------------
ARC RAYS can burn.
•Wear eye, ear and body protection.
------------------------------------------------------------------------
FUMES AND GASES
can be dangerous.
• Although the removal of the particu-
late matter from welding smoke may
reduce the ventilation requirement,
concentrations of the clear exhausted
fumes and gases may still be haz-
ardous to health. Avoid breathing
concentrations of these fumes and
gases. Use adequate ventilation
when welding. See ANSI Z49.1,
"Safety in Welding and Cutting", pub-
lished by the American Welding
Society.
------------------------------------------------------------------------
Only qualified personnel should operate this equip-
ment.
ADDITIONAL SAFETY PRECAUTIONS
Always operate this equipment with the filter and arm
installed and all covers in place as these provide max-
imum protection from moving parts and insure proper
vacuum operation and cooling air flow.
OPERATING INSTRUCTIONS
Connect to 120 VAC input power and turn on at the
base unit.
Position hood within 10-15 inches (250-400mm) of the
arc. DO NOT USE FOR CUTTING OR GOUGING
OPERATIONS.
The Mobiflex 400-MS can be used with either a
10 ft. or 13 ft. extraction arm. The hood of the arm can
be retrofitted with a 24VAC lamp kit with remote,
hood-mounted switch for the blower. A lamp kit is
available that includes an automatic start/stop arc
sensor. This device automatically switches the
Mobiflex fan on when it senses a welding arc, and off
when it does not sense the arc.
THE 400-MS FILTER CLEANING SYSTEM
The Mobiiflex 400-MS uses an automatic filter clean-
ing system to maintain the filter and reduce mainte-
nance costs. Fume collected on the outside of the fil-
ter is knocked off by a blast of compressed air from
the cleaning system. Fume then drops into the dust
collection tray at the bottom of the unit.
When the pressure drop across the filter reaches a set
point due to increased dust on the outside surface of
the filter, a solenoid releases air from a compressed
air resevoir tank mounted inside the filter cartridge.
This air goes through several holes in the cleaning
tube, cleaning one section of the filter with multiple air
jets. The cleaning tube then shifts to the next section
of the filter until the pressure drop again reaches the
set point, triggering the next cleaning pulse.
A manual cleaning cycle is initiated by pressing the
button on the face of the machine. The system pauses
between sections of the filter, allowing the air tank to
repressurize. The Mobiflex 400-MS requires 90 - 100
psi of clean, dry compressed air to function properly.
This manual cleaning cycle takes 40 - 50 minutes to
completely clean the whole filter. The indicator will
light during this 40 - 50 minute period. This cleaning
cycle can be stopped by pressing the Reset/Start but-
ton next to the light.
(Continued on next page)
MOBIFLEX 400-MS
WARNING