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5. MAINTENANCE
5.1
REPLACING PROTECTIVE LENS COVERS.
The shade cartridge is fitted with two protective lens covers
to protect the inside and outside from weld splatter. Place
your finger or thumb into the recess on the long edge of the
cover lens frame and flex the frame upwards until it releases
from one edge. (See fig.4-C). Remove the protective film
from the new lens. Hook the lens under the side retaining lip
shown at 'A' in fig.4. Press on the other side of the frame to
snap it under the edge shown at 'B' in fig.4. Use the same
procedure for the inner protective lens cover.
5.2
CHANGING THE SHADE CARTRIDGE.
Pull off the shade adjustment knob from the side of the
helmet and remove the nut holding the potentiometer. The
cartridge is retained by a wire loop clip as shown in fig.5.
Release the front edge of the clip (fig.6-D) from its retaining
lugs (fig.6-E) and hinge it upwards and out of the way. Lift
the shade cartridge out of its frame.
5.3
FITTING NEW CARTRIDGE.
Take the new shade cartridge and place the cartridge into its
retaining frame inside the helmet. Hinge down the wire loop
clip and ensure that the front edge of the loop is properly
retained under the retaining lugs as shown in fig.5. Insert the
potentiometer through the side of the helmet and secure
with the nut. Refit the knob ensuring that the arrow points to
the min and max settings when turned.
5.4
CLEANING.
Clean helmet by wiping with a soft cloth. Clean cartridge
surfaces regularly. Do not use strong cleaning solutions.
Clean sensors and solar cells with methylated spirit using a
clean cloth and wipe dry with a lint-free cloth.
6. PROBLEM SOLVING
Problem
Irregular darkening or
dimming.
Shade cartridge does
not darken or flickers.
Poor vision.
Slow response.
Welding helmet slips.
fig.5
Cause
The headband may have been unevenly set on the two
sides of the helmet (unequal distances from the eyes to
the shade cartridge).
The sensors are soiled or obstructed.
Front cover lens oiled or damaged.
Welding current too low.
Operative lenses and/or shade cartridge soiled.
Insufficient background lighting.
Operating temperature too low.
Headband adjustments incorrect.
Original Language Version
A
C
Solution
Readjust the distance of the
shade cartridge.
Clean.
Clean or replace.
Adjust weld amps.
Check, clean or replace.
Adjust light.
Do not use at temperatures
below -10 o C (14 o F).
Refer to section 4.
B
fig.4
fig.6
PWH699
Issue No.1 05/11/09
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