Operating Instructions; Function; Before Welding; Shade Number And Grinding Mode Selection - Smarter tools Mega-550S Manual Del Usuario

V. Operating Instructions

Function

The Auto-Darkening Welding Helmet is designed to protect the eyes and face
from sparks, splatter, and harmful radiation under normal welding conditions. The
Auto-Darkening Filter automatically changes from a clear state to a dark state
when an arc is struck, and it returns to the clear state when welding stops.

Before Welding

The Auto-Darkening Welding Helmet comes ready for use. The only things you
need to do before welding are to
•
cremove the protective film from both sides
of the lens (if not already done),
•
adjust the position of the headband,
•
select the correct shade number for your
application, and
•
test the helmet for proper operation as
described following.
Check the Front Cover Lens to make sure that It Is
clean, and that no dirt is covering the two sensors on
the front of the Filter Cartridge. Also check the
Front/Inside Cover Lens and the Front Lens Retaining
Frame, and make sure that they are secured in place.
Inspect all operating parts before each use for signs
of wear or damage. Any scratched, cracked, or pitted
parts should be replaced immediately before using
again to avoid severe personal injury.

Shade Number and Grinding Mode Selection

1.
Select the shade number you need (see Shade Guide Chart on page 6) by turning the
Shade Control Knob. Be sure that the shade number of the Welding Helmet is the correct
shade number for your application.
2. Note: If selections of shades are recommended for your application, try the darkest
setting first.
3. The shade number can be set from 9 to 13 by turning the Shade Control Knob until
points to the desired shade number. See Figure B.
4. Remember to check with the Shade Guide Chart on
page 6 to determine the proper shade number for your
application.
5. Important Note: Test the helmet auto-darkening filter
lens before welding. While wearing the helmet, briefly strike
an arc, keeping your face and eyes turned slightly away,
and to one side. The lens should darken evenly when not
directly facing the arc. If it does not darken properly, do not
use the Welding Helmet.
4
Figure A
Figure B