-28-
g0649 Welding downdraft table
figure 38.
hEpa filter flow arrow.
Flow
arrow
4.
using warm soapy water, wash out the filter
housing and allow it to air dry.
5.
Make sure you are wearing your respirator
and safety goggles.
6.
Support the hEpa filter element and vacuum
the input side of the filter with a soft brush-
type tip while tapping the filter element.
7.
hold a shop air gun or spray nozzle no closer
than two to three feet from the filter element,
and in a slow and sweeping motion, blow
the remaining contaminants back out the
direction they came (against the direction of
the arrow you previously marked). Be careful
however, if you get too close the jet of air
pressure may blow a hole in the filter.
8.
after cleaning, return the filter to the marked
position in the filter housing.
9.
reassemble and start the machine.
figure 37.
removing hEpa filter.
hEPA filter
(
Manual cleaning
)
this hEpa filter removes 99.97% of the 0.3-micron
particles. this filter rarely needs to be replaced if
the machine is properly used and cleaned.
Tools needed
Qty
oSha approved respirator .............................. 1
Safety goggles .................................................. 1
air Compressor ................................................. 1
Blowgun ............................................................. 1
To clean the hEPA filter:
1.
diSConnECt thE MaChinE FroM
poWEr, put on your respirator, and empty
the dust drawer.
2.
open the hEpa filter housing, and remove
the hEpa filter (
figure 37
).
—if you are going to reuse the hEpa filter
and it is not already marked with an airflow
label like the one shown in
figure 38
, use
a permanent marking pen, and mark the
top of the filter with an arrow indicating the
direction of air flow.
—if you are installing a new filter, also indi-
cate the replacement date.
