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USE
•
PRECAUTIONS
The “TWFR” model helmet is composed of a lter TH11; furthermore, it is composed
of transparent external and internal front guards.
The helmet was designed to guarantee correct eye protection during welding, as
well as providing the maximum performance both in facilitated assembly and the
convenience and quality of use: it guarantees permanent protection against UV and
IR radiation and sparks generated during the arc welding process.
- Overall measurements: 108x51mm,110x90x10mm (XL)
- Filter protection plates: front 110x90mm, internal 110x90mm
- Visual area: 100x47mm, 101x81mm (XL)
- Dark state: xed gradation 11 DIN
The marking found on the TH11 model lter, on the upper front section, is composed
of a series of symbols with the following meanings:
scale number
Manufacturer’s symbol: TELWIN ITALY
optic class
CE marking CE
The marking found on the TWFR helmet internal lower front section is composed of a
series of symbols with the following meanings:
Manufacturer’s symbol: TELWIN ITALY
numerical standard of legislation referenced when requesting certication
mechanical strength: impact at low energy F
CE marking CE
The marking on the transparent external guard is composed of a series of symbols
with the following meanings:
Manufacturer’s symbol: GX
Optic class
mechanical strength: impact at medium energy B
CE marking CE
The marking on the transparent internal guard is composed of a series of symbols with
the following meanings:
Manufacturer’s symbol: GX
optic class
mechanical strength: impact at medium energy B
CE marking CE
The helmet must be adjusted to efciently protect the eyes and face during welding.
The position of the front and rear strap can be manually adjusted to perfectly adapt
to head size.
Turn the knob (in some models, the knob must be pressed to turn it) to adapt the head
strap.
The height can be adjusted to position the strap just over the eyebrows: tighten or
loosen the two graduated belts placed on the upper part of the head.
Loosen the external knobs and slide forward or back until you obtain the desired
position, then tighten again.
Ideal tilting of the helmet is where the eyes are perpendicular to the surface of the lter.
To adjust the visualisation angle, loosen the knobs on both sides of the helmet and set
the desired tilting of the helmet. If it is not possible to obtain the desired tilting, press
the side buttons and move the cursors simultaneously so that the helmet goes beyond
limitation of the preset angle.
Assemble as in the drawing ().
The helmet must always and only be used to protect the face and eyes during welding.
The helmet and therefore the zone of the visual lter glass must be kept, during
welding, as near as possible to the eyes to protect them from luminous radiation and
any drops of molten metal.
Before starting the welding process, check the lter, the external and internal guards
are correctly positioned.
Adjust the “Shade” luminous gradation, in the models where this is possible, based on
the current and the welding procedure.
gives the recommended “shade” luminous gradation numbers for using an
electric arc welding machine to carry out common jobs and the different welding
current intensity levels. Check the intensity of the current and the welding procedure
are suitable for the luminous gradation of lter protection.
Adjust the “Sensitivity”, in the models where planned, based on the luminous intensity
of the welding arc.
Adjust the “delay-time, in the models where planned, to set the delay time for passage
from the dark state to light state, after interrupting the arc and based on piece
luminosity.
ENGLISH INDEX
3.1 TECHNICAL SPECIFICATIONS OF FILTER TH11 ........................................................................... 5
3.2 MARKING .......................................................................................................................................... 5
3.2.1 MARKING ON FILTER............................................................................................................. 5
3.2.2 MARKING ON HELMET .......................................................................................................... 5
3.2.3 MARKING ON TRANSPARENT EXTERNAL GUARD ............................................................ 5
3.2.4 MARKING ON TRANSPARENT INTERNAL GUARD.............................................................. 5
4.1 HELMET AND MAIN COMPONENTS ASSEMBLY (Fig. A)............................................................... 5
4.2 HELMET ADJUSTMENTS (Fig. B) .................................................................................................... 5
4.2.1 Adjustment of the perimeter strap (Fig. B-1)............................................................................ 5
4.2.2 Adjustment of the perimeter strip height (Fig. B-2) .................................................................. 5
4.2.3 Adjustment of the distance between the face and lter (Fig. B-3) ........................................... 5
4.2.4 Adjustment of inclination (Fig. B-4).......................................................................................... 5
6
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