Owner`s manual

OM-263 001 Page 24
SECTION 6 − OPERATION
6-1. Theory Of Operation
! Only use the fume extractor to ex-
tract weld fumes. Do not use the
fume extractor to extract hot gases
(above 140° F/60° C), wood or ce-
ment dust, engine exhaust, liquid
vapors, explosive materials,
aggressive fumes (acid), fumes
from burning objects, or fumes from
cleaning, cutting, gouging, grind-
ing, painting, flame spraying, sand
blasting, or other non-welding op-
erations.
1 Welding Fumes
2 Hopper
3 Fumes Are Forced Through The
Filter Packs
4 Cleaning System Releases Pulses Of
Compressed Air One Valve At A Time
5 Fume Particles Dislodge From Filter
6 Clean Air
Fumes enter the unit through the top inlet.
Airflow is then directed downward through
the extractor and heavier particulate falls
directly into the hopper. The filter packs re-
move fine particulate and filtered air passes
through the packs to the clean-air plenum
and discharges through the clean-air out-
let.
The filters are cleaned by reverse-pulsing
the filter packs with controlled bursts of
compressed air. Cleaning control is activ-
ated by the pressure drop across the filter
packs or by manually initiating the controls
to pulse continuously (when the extractor is
operating). The cleaning sequence starts
at the top filter packs and continues down
through each filter pack set. The filter packs
are serviced by opening the access door,
unclamping the filter banks, and sliding the
filter packs out.
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