Telwin 954923 Manuel D'instructions page 5

ENGLISH
1. GENERAL SAFETY FOR HELMET USE AND PROFESSIONAL AND INDUSTRIAL USE .................. 5
2. INTRODUCTION AND GENERAL DESCRIPTION ................................................................................. 5
3. TECHNICAL SPECIFICATIONS . ............................................................................................................. 5
3.1 TECHNICAL SPECIFICATIONS OF FILTER TWY 350F ................................................................... 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. DESCRIPTION . ........................................................................................................................................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
WELDING HELMETS WITH AUTOMATIC DARKENING FILTER.
NB: In the text that follows, the term "helmet" and "filter" will be used.
1. GENERAL SAFETY FOR HELMET USE AND PROFESSIONAL AND INDUSTRIAL
USE
The operator must be sufficiently trained on safe use of the welding machine
and informed on the risks relating to arc welding procedures, the relevant safety
measures and the emergency procedures.
During welding, luminous radiation emitted by the electric
•
arc can damage eyes and burn skin; furthermore, welding
produces sparks and drops of molten metal can be
projected in all directions. It is therefore necessary to use
the safety helmet to avoid physical injury, which may even be serious.
• Avoid the welding helmet catching fire, for any reason, as the fumes produced
are harmful to eyes and, if inhaled, for the body.
• The material composing the complete helmet is free of hazardous substances
and does not present any risk for man or the environment.
• Regularly check the condition of the helmet and the filter:
- Before each use, check correct positioning and fastening of the filter and the
protective plates which must be exactly in the space described.
- Keep the helmet far from flames.
- The helmet must not be too close to the welding area.
- In prolonged welding, every now and then check the helmet for any
deformations or wear.
- For particularly sensitive people, the materials that come in contact with the
skin could cause allergic reactions.
• This automatic darkening helmet is only certified to protect the face and eyes
from harmful ultraviolet and infra-red radiation, from sparks and welding
sprays; it is not suitable for laser welding and oxy-acetylene welding and
cutting or to protect the face from explosions or corrosive liquids.
• Only replace helmet parts with others specified in this manual. Non-compliance
with this regulation can expose the operator to health risks.
• If the helmet does not darken or presents functionality problems, refer to the
TROUBLESHOOTING chapter; if the problem persists, immediately stop using
the helmet and contact your supervisor or distributor.
• Do not immerse the filter in water or other liquids; do not use solvents to clean
the filter or the protective plates.
• Use the helmet only at temperatures: -5°C (+23°F) ÷ +55°C (+131°F).
• Store the helmet only at temperatures: -20°C (-4°F) ÷ +65°C (+149°F).
• Protect the filter and the protective plates from contact with liquids and dirt.
• Do not open the filter container.
• Never use the helmet without the internal or external transparent protective
plates of the filter.
• Check compatibility of the protective plates of the filter and the helmet: both
should be marked with the same impact resistance symbol against high speed
particles, in this case F. If the marking symbols are not common to both, the
protective plates of the filter and the helmet, then the lowest protection level
of the helmet-filter assembly should be used.
• The eye protection against high speed particles worn over standard glasses
can produce impact, thereby creating hazards for those who wear them.
• Do not use spare parts other than original TELWIN parts.
Unauthorised modifications and replacement with non-original parts will void
the warranty and expose the operator to the risk of personal injury.
• Remember to use the helmet, the automatic darkening filter and the relevant
protective plates for a maximum of 2 years. The duration of these items
depends on various factors such as the frequency of their use, cleaning,
storage and maintenance. You are advised to frequently inspect and replace if
damaged.
PRECAUTIONS
To protect the user's safety and ensure the welding automatic darkening
filter works properly, read these instructions carefully and consult a qualified
instructor or supervisor before starting work.
• These filters and protection plates can be used in all welding processes, with
the exception of oxy-acetylene welding and laser welding.
• The light protection plate in standard polycarbonate must be applied on both
sides of the filters.
• Non-use of the protection plates can be hazardous for safety or cause
irreparable damage to the automatic darkening filter.
• Use is planned of the helmet in the "GRIND" position (where present)
exclusively for grinding.
2. INTRODUCTION AND GENERAL DESCRIPTION
The "TW-C" model helmet is composed of a TWY 350F filter; furthermore, it is
composed of transparent front internal and external 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.
3. TECHNICAL SPECIFICATIONS
3.1 TECHNICAL SPECIFICATIONS OF FILTER TWY 350F
- Overall measurements:
- Filter protection plates:
- Visual area:
- Luminous state:
- Dark state:
110x90x10mm
front 93.5x112.5mm, internal 47x102mm
90x35mm
gradation 3 DIN
variable gradation 11 DIN
INDEX
page
4.2.2 Adjustment of the perimeter strip height (Fig. B-2) .................................................................. 5
4.2.3 Adjustment of the distance between the face and filter (Fig. B-3) ........................................... 6
4.2.4 Adjustment of inclination (Fig. B-4) .......................................................................................... 6
5. ASSEMBLY ..............................................................................................................................................6
6. USE . ...............................................................................................................................................6
7. MAINTENANCE AND CLEANING........................................................................................................... 6
8. TROUBLESHOOTING . ............................................................................................................................ 6
- Switching time:
- Delay from dark state to luminous:
- Switch on/switch off:
- Light sensors:
- Power supply:
- Operating temperature:
- Preservation temperature:
- Structure:
3.2 MARKING
3.2.1 MARKING ON FILTER
The marking found on the lower front section of the TWY 350F model filter is composed
of a series of symbols with the following meanings:
light scale number
dark scale number
Manufacturer's symbol: TELWIN ITALY
optic class
light diffusion class
light transmission factor variation class
light transmission factor angular dependence
numerical standard of legislation referenced when requesting certification
CE marking
3.2.2 MARKING ON HELMET
The marking found on the lower front internal section of the TW-C helmet is composed
of a series of symbols with the following meanings:
Manufacturer's symbol: TELWIN ITALY
numerical standard of legislation referenced when requesting certification
mechanical strength: impact at medium energy
CE marking
3.2.3 MARKING ON TRANSPARENT EXTERNAL GUARD
The marking on the transparent external guard model TW F CE is composed of a
series of symbols with the following meanings:
Manufacturer's symbol:
mechanical strength: impact at low energy
CE marking
3.2.4 MARKING ON TRANSPARENT INTERNAL GUARD
The marking on the transparent internal guard model TW 1 F CE is composed of a
series of symbols with the following meanings:
Manufacturer's symbol:
optic class
mechanical strength: impact at low energy
CE marking
ATTENTION: If the protection letter against high speed particles
marked on the helmet and on the protection plates is not followed by
the letter T, then an eye shield should be used against the high speed
particles only at ambient temperature.
4. DESCRIPTION
4.1 HELMET AND MAIN COMPONENTS ASSEMBLY (Fig. A)
4.2 HELMET ADJUSTMENTS (Fig. B)
4.2.1 Adjustment of the perimeter strap (Fig. B-1)
The helmet must be adjusted to efficiently 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.
4.2.2 Adjustment of the perimeter strip height (Fig. B-2)
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.
- 5 -
0.1 - 1 s with control knob
lithium-solar cell combination
3 / 11 TW 1 / 1 / 1 / 2 / 379 CE
TW EN175 B CE
TW F CE
TW 1 F CE
page
< 0.0004 s
automatic
2
-5°C (+23°F)
+55°C (+131°F)
-20°C (-4°F)
+65°C (+149°F)
plastic
3
11
TW
1
1
1
2
379
CE
TW
EN175
B
CE
TW
F
CE
TW
1
F
CE