4. INSTRUCTIONS FOR USE
WARNING! Before using the helmet for welding ensure you
have read and understood the safety instructions in Section 1.
4.1.
The helmet comes ready assembled but before it can be
used it must be adjusted to fit the user properly and set
up for response time, sensitivity and shade level .
4.2.
ADJUSTING THE FIT OF THE HELMET.
The overall
circumference of the headband can be made larger or
smaller by rotating the knob on the back of the headband .
(See adjustment ‘Y’ in fig .1) This can be done whilst
wearing the helmet and allows just the right tension to be
set to keep the helmet firmly on the head without it
being too tight .
4.3.
If the headband is riding too high or too low on your
head adjust the strap which passes over the top of
your head . To do this release the end of the band by
pushing the locking pip out of the hole in the band . Slide
the two portions of the band to a greater or lesser width as
required and push the locking pip through the nearest
hole (See adjustment ‘W’ in fig .1)
4.4.
Test the fit of the headband by lifting up and closing
down the helmet a few times whilst wearing it . If the
headband moves whilst tilting, re-adjust it until it is stable .
4.5.
ADJUSTING DISTANCE BETWEEN HELMET AND FACE.
To adjust the distance between the helmet and your face in the down position loosen the tilt knobs on
either side of the helmet and slide it nearer to or further from your face (see adjustment ‘Z’ in fig .1) It is
important that your eyes are each the same distance from the lens otherwise the darkening effect may
appear uneven . Re-tighten the tilt knobs when adjustment is complete .
4.6.
SELECTING SHADE LEVEL.
Select the shade level you require according to the welding process you
will use by referring to the “Shade Guide” below for settings . Turn the shade control knob on the side of
the helmet to the shade number required .
fig.1
4.7.
SELECTING DELAY TIME.
When welding ceases the viewing
window automatically changes from dark back to light but with a
pre-set delay to compensate for any bright afterglow on the
workpiece . The delay time/response can be set to ‘fast’ (0 .25secs to
0 .35) or ‘slow’ (0 .5secs to 0 .8) as required using the micro switch on
the back of the shade cartridge . (See fig .2)
4.8.
SENSITIVITY.
The sensitivity can be set to ‘high’ or ‘low’ using
the micro switch on the back of the shade cartridge . The ‘high’ setting is
the normal setting for everyday use . Where the operation of the mask is
disturbed by excess light or another welding machine close by, use the ‘low’ setting (See fig .2) .
4.9.
You are now ready to use the helmet . The shading may be adjusted during use by re-setting potentiometer control .
fig.2
5. MAINTENANCE
5.1.
REPLACING FRONT COVER LENS
. Place your
finger or thumb into the recess at the bottom edge of
the cover lens frame and flex the frame upwards until
it releases from one edge . (See fig .3-C) . Remove the
protective film from the new lens and press it into the
lens frame . Hook the frame under the side retaining lip
shown at ‘A’ in fig .3 making sure that it is the right way
up . Press on the other side of the frame to snap it under
the edge shown at ‘B’ in fig .3 .
5.2.
CHANGING THE SHADE CARTRIDGE.
(See figs .4a & 4b) Pull off the shade control knob
leaving the shaft protruding through the helmet side .
Unfasten the nut on the shaft and leave the potentiometer
loose on its cable . The cartridge is retained by a wire loop
clip as shown in fig .4a . Release the front edge of the clip
(fig .4b-D) from its retaining lugs (fig .4b-E) and hinge it upwards and out of the way . Lift the shade cartridge out of
its frame complete with the shade control potentiometer on its lead .
5.3.
FITTING NEW CARTRIDGE.
Take the new shade cartridge and pass the potentiometer cable under the wire loop
before dropping 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 .4a
5.4.
Fasten the nut on the shaft protruding through the hole . Push the shade control knob onto the shaft .
5.5.
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 and a clean cloth and wipe dry with a lint-free cloth .
fig.4b
fig.4a
fig.3
6.
MEANING OF MARKINGS
Meaning of the markings on the filter:
4
/
9
-
13
Jack Sealey Ltd.
1
/ 2 / 1 / 2 / 379
Light state scale no.
Lightest dark state scale no.
Darkest state scale no.
Manufacturer's identification.
Optical class.
Diffusion of light class.
Variation in luminence transmittance class.
Angle dependence of luminous transmittance class.
Number of the applied standard.
Meaning of the markings on the helmet:
Jack Sealey Ltd. = manufacturer's identification
EN 175
= number of the applied standard
S
= symbol of the robustness (Increased robustness)
Original Language Version
Original Language Version
PWH599 .V2 Issue: 4 - 11/
04/11
PWH599 .V2 Issue: 4 - 11/
04/11