Würth STELLA User manual

STELLA
Art. 0 984 915010
Art. 0 984 915020
Art. 0 984 915030
Art. 0 984 915040
User's Manual
GB
AUTO-DARKENING
WELDING HELMET

BEFORE WELDING
1. Before welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2. Shade number selection ..........................1
3. Product features ................................2
4. Variable shading/
delay time/sensitivity adjustment/
welding or grinding mode selection ................2
5. Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
6. Magnifier/Cheater lens ..........................3
7. Headband adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
8. Cover Lens Replacement with Parts List . . . . . . . . . . . . . . 4
9. Parts List ......................................5
AUTO-DARKENING WELDING HELMET
STELLA
TABLE OF CONTENTS
GB
WARNING: Read carefully all the instructions before
using the product for the first time!
The personal injuries may occur if the user fails to
comply with all the warnings and fails to follow the
instructions specified herein.
Ÿ The Auto-Darkening Welding Helmet comes completely
ready for use. It is only necessary to adjust the headband
and select the correct shade number suitable for your
application.
Ÿ Make sure that the Front Cover Lens is clean, and that no
dirt is covering the surfaces of four sensors on the front
part of the Filter Cartridge. Also check the Front/Inside
Cover Lens and the Front Lens Retaining Frame and make
sure that they are secure in place.
Ÿ Frame and make sure that they are secure in place.
Inspect all operating parts before each use for signs of
wear or damage. Any cracked or pitted parts should be
replaced immediately to avoid severe injuries during the
work.
Ÿ Check light tightness level before each use.
Ÿ Select the shade number you need by turning a shade
knob (See Table No. 1 Shade Number Guide). Finally,
make sure that the shade number is correct for your
application.
Ÿ Adjust the headband so that the helmet is placed as low
as possible on the head and close to your face. When in
the lowered position, adjust the helmet's angle by turning
the adjustable limitation washer.
The shade number can be set manually between 9 – 13. See
the Shade Number Guide Table to determine the correct
shade number suitable for your application. Set the selected
shade number by turning the shade knob until the arrow
points to the required shade number (See Shade Number
Guide Table No. 1).
SHADE NUMBER SELECTION
1
Table No. 1 Shade Number Guide
Welding
process
Welding current (amperes)
0.5 2.5 10 20 40 80 125 175 225 275 350 450
1 5 15 30 60 100 150 200 250 300 400 500
SMAW
9 10 11 12 13 14
MIG (heavy)
10
11 12 13
14
MIG (llight)
10
11 12 13 14
15
TIG, GTAW
9 10 11 12 13
14
MAG/CO2
10 11 12 13 14 15
SAW
10 11 12 13 14
15
PAC
11 12 13
PAW
8 9
10 11 12 13 14
15
Note: * SMAW- Shielded Metal Arc Welding.
* MIG(heavy)-MIG on heavy metals.
*MIG (light)-MIG on light alloys.
*TIG, GTAW-Gas Tungsten Arc Welding (GTAW) (TIG).
*SAW-Shielded Semi-Automatic Arc Welding.
*PAC-Plasma Arc Cutting. *PAW-Plasma Arc Welding.

Viewing area: 98 x 55mm/3.86" x 2.17"
UV/IR protection: sve do stepena DIN16 permanentno
Clear state: DIN 4
Variable
shade: from DIN9 to DIN13
Reaction time: 0.000033 sec. (1/30000 s)
Delay time: long-middle-short (outside adjustment)
(it may vary between 0.3s ~ 0.9 s)
Sensitivity: can be continually adjusted using the
outside controls
Sensors: four infrared detectors
Power supply: solar cells + lithium battery (battery
service life is 5-7 years).
Power On/Off: fully automatic
Mode: "WELDING"/"GRINDING" can be
selected using the outside controls
Operating
temperature: - 5°C do + 55°C ( 23°F do 131°F )
Storing
temperature: - 20°C do + 70°C (-4 ° F do 158° F)
Shell Material: High-impact resistant plastic/polyamide
(Nylon) DIN EN 175 BCE
Total weight: 470 g
Ÿ This product is in full conformity with the DIN EN 379, DIN
EN 175 safety standards, as well as with the ANSI /ISEA
Z87.1-2010 standard.
Ÿ Before welding it is necessary to clean the Filter, Front
Cover Lens, Inside Cover Lens and four optical sensors. If
the Front Cover Lens and Inside Cover Lens are soiled and
cannot be cleaned, it is necessary to replace them
immediately.
TECHNICAL SPECIFICATIONS
USER-SELECTABLE VARIABLE SHADE/
DELAY TIME SENSITIVITY ADJUSTMENT
WELDING OR GRINDING
MODE SELECTION
1) Welding/grinding selection switch: when
grinding, the helmet cannot provide adequate protection if
the particles coming out from the metal surface are heavier
than 43 grams and if their speed exceeds 120 m/s. The
welding helmet is in conformity with the DIN EN
175:1997 standard (impact resistance level B). This
helmet cannot provide the protection for other body parts
so that users should wear appropriate protective
equipment.
2) Sensitivity adjustment knob: Before welding, set
the sensitivity at the highest level, and if the interference
with the ambient light is taken into account (the filter
darkens even before welding is started), it is necessary to
set the sensitivity at lower values, until the filter returns to a
clearer state (do not expose the helmet to the source of
light in the room during welding, but turn it only towards
the work piece). During welding, the sensitivity adjustment
knob should be set at the highest level, otherwise the filter
will not have a quick shading response.
Warning: The operator must immediately stop using this
helmet if the filter does not darken, if darkening speed is
low or if the filter flickers. In this case, you should contact
your supplier.
3) Shade Number Selection Knob - before welding is
started, set the shade number selection knob at the correct
value, depending on the type of welding process and
welding current, in order to carry out the test welding (See
Table No. 1 for Shade Number Selection). If the filter's
shade is too dark or too clear, gently set the shade knob so
that you can see a weld and though it does not glow you
can still notice the melted zone. Please consider the fact
that using the helmet with the incorrectly set shade number
(too dark or too clear) may cause severe damages to the
eyes over long time period.
WARNING: In the case that the filter does not darken, or the
shade number is insufficient, or darkening is too slow or the
filter flickers, please find out the causes. If the operator
2

cannot solve the problem on his own, it is necessary to stop
using this helmet and contact the supplier.
4) Delay time switch —
1) there are three positions (long, medium, short) by which
you can set the time of switching from dark to clear state in
order to avoid the possible damages to the eyes in the
event of the residual arc, when switching to the clear state
is performed too quickly from the moment when the arc
finishes. Delay time is: 0.3s-0.5s (in the SHORT position);
0.4s-0.6s (in the MEDIUM position),; 0.6 s-0.9s (in the
LONG position). Delay time may vary depending on the
type of welding process as well as different sensitivity
adjustments, even though the delay time switch is placed in
the same position.
If the filter flickers at low welding currents, it is necessary to
set this switch to the LONG position in order to remedy this
problem.
1) Testing button 2) Battery Indicator
1) Testing button —
1) by which you can check the condition of the Lithium battery
as well as if the filter functions properly. If the battery
indicator is red and if it darkens when the testing button is
pressed, the filter is considered to be in normal working
condition.
If the battery indicator flashes but the filter does not
darken, it means that there is a problem with the filter, so
do not use it.
The filter can be installed together with the magnifier/cheater
lens that, if necessary, may be ordered via our sales network.
1) The Headband strap over the top of the head – by moving
this strap in the arrow direction (shown in the Figure) you
can adjust the width of this strap. Depending on the shape
of the welder's head it is possible to adjust it in the most
suitable position.
2) The distance between the headband and the Filter Lens –
in this way, the distance from the Filter Lens in relation to
the welder's eyes can be adjusted (vertical left-right
movement).
3) The headband adjustment on the back of the head – it is
possible to adjust this width depending on the shape of the
head (loose or fasten).
4) The incline angle adjustment – it is possible to adjust the
helmet's inclination in relation to the user's face, and thus
adjust the distance between the Filter Lens and the user's
eyes.
Ÿ This model is equipped with a special turnover (up &
down) mechanism. When the welder turns over the helmet
to his head top, the headband mechanism makes the
helmet's gravity center lower to fit the center of the welder's
head. Such a design of the helmet greatly reduces the
fatigue of welder's head (and neck) and ensures more
comfortable work.
Ÿ The headband has been set unevenly so that there is an
unequal distance between the eyes and the filter's lens
(Reset the initial headband adjustment to reduce the
distance to the filter)
TESTING
MAGNIFIER/CHEATER LENS
HEADBAND ADJUSTMENT
3

(1) Shell, (2) Shade scale window, (3) Sensitivity scale window, (4) Grinding/Welding Switch, (5) Filter Setting Frame, (6) 2x
Fixing Nut, (7) Shade knob /Sensitivity knob, (8) Front Cover Lens, (9) Shade box, (10) Sensitivity box, (11) Lithium battery case,
(12) Auto-Darkening Filter, (13) Inside Cover Lens, (14) Magnifier/Cheater Lens (can be ordered if necessary).
COVER LENS REPLECEMENT WITH PARTS LIST
Zamena poklopca sočiva sa listom delova
4

(1) Shell (15) 2x fixing nut, (16) 2x lock washer, (17) Adjustment limitation washer (left) (18) Adjustment limitation washer (right)
(19) Headband lever (left) (20) Headband lever (right) (21) Headband lever fixing screws (22) Sweat band (cloth) (23) Front
headband (24) Left headband (25) Right headband (26) Back elastic strap (27) Headband fastening mechanism (loosing –
fastening)
PARTS LIST
5

Wurth d.o.o. Beograd,
Svetog Save 60v, Surčin,
11271 Beograd
T: ([phone]
F: ([phone]
www.wurth.rs, [email protected]
Wurth d.o.o. Podgorica,
Ludvika Kube 6,
81000 Podgorica
T: ([phone]
F: ([phone]
www.wurth.me, [email protected]