Telwin TWH Manual

(EN)
WELDING MASK MANUAL
TELWIN S.p.A.
Via della Tecnica, 3 - 36030 VILLAVERLA (Vicenza) Italy
Informative note on welding mask Model TWH.
Note: the term mask is used in the text that follows.
The mask Model TWH is in compliance with the
requirements of the EN 175 European Standard (Personal
protection. Equipment for eye and face protection during
welding and allied processes) and with what is prescribed
by the 89/686/EEC reference Directive.
ATTENTION!
Mask users must read, learn and respect the basic rules
given in this manual.
The radiation emitted by the electric arc during welding can
damage the eyes and burn the skin. In addition, welding
produces sparks and drops of molten metal that y in all
directions.
The protective mask must be worn to avoid potentially
serious physical damages.
Do not, for any reason, set re to the welding mask because
the smoke it produces will damage the eyes and body if
inhaled.
The material used to make the whole mask does not
endanger people or the environment.
Regularly check the conditions of the mask:
- Before using it, make sure that the lter-glass is in the
correct position and correctly xed in place: it must be
exactly in the space described.
- Keep the mask away from ames.
- The mask must not be placed too close to the welding
area.
- When welding for extended periods, occasionally check
the mask to make sure there are no signs of deformation
or deterioration.
- Subjects with particularly sensitive skin must take extra
care: materials that may come into contact with the skin
can cause allergic reactions.
- Do not use replacement parts other than those original
TELWIN.
Unauthorized modi cations and replacement parts will
void the warranty and expose the operator to the risk of
personal injury.
INSTRUCTIONS FOR USE AND MAINTENANCE
The mask must always be used to protect only the face
and eyes during welding. It was, in fact, designed to
guarantee maximum protection during welding, to be
easy to assemble, comfortable to wear and of top quality
when used.
The WELDING MASK and thus the visual lter glass must
be kept as close to the eyes as possible in order to protect
them from luminous radiations as well as from molten
metal drops.
After using the mask and before putting it away after
working, it must be checked to verify integrity and to
eliminate any drops of molten metal that may be present on
the vision lter, which can reduce visibility.
The mask must be stored in a way that does not allow its
dimensions to deform permanently or its protective vision
TAB. 1
Welding process
and related technics
Coated electrodes
MAG
TIG
MIG on heavy metals (*)
MIG on light alloys
Air-arc cutting
Plasma-jet cutting
Microplasma arc welding
(*) The term "Heavy metals" refers to steel and its alloys, copper and its alloys.
lter to break.
CLEANING AND DISINFECTION
Clean and disinfect the mask using only water and soap, or
if necessary products that do not contain solvents. Using
chemical solvents ruins the mask, and can totally reduce
its integrity.
Taking good care of the mask reduces its obsolescence to a
minimum, both as regards use and components.
FILTER SPECIFICATIONS
The mask is supplied with a lter-glass marked CE having a
dark shade of 11. Use the masks with lter for welding and
cutting processes only using current intervals indicated in
tab. 1 according to level number 11.
The lter is in compliance with the EN 166:2001
"Personal eye protection - Speci cations" and the EN
169:2002 "Personal eye-protection. Filters for welding
and related techniques. Transmittance requirements
and recommended use" Standards.
To use it correctly, operators who purchase this mask must:
- Make sure that the lter surfaces do not show signs
of scoring, cuts, knocks or any other thing that could
obstacle correct vision.
To preserve it correctly, the lter should be kept in an
environment that does not contain organic vapours
and at a temperature of between + 5° and + 30°.
To carry out maintenance correctly, the user must:
- Regularly clean the lter after it is used, rinsing it
immediately with the cleaning liquid.
As regards cleaning, the user must follow these
instructions:
- never clean the mask in direct sunlight;
- use absorbent cloths or soft non-scratch textiles to dry
the lter;
- use warm water and neutral soap or, alternatively, any
conventional lter cleaner as a cleaning liquid;
- never use abrasive or very alkaline cleaners;
- ATTENTION: NEVER USE ORGANIC SOLVENTS OR
LIQUIDS SUCH AS PETROL OR ALCOHOL!
Using a higher dark shade does not guarantee greater
protection, but could force the operator to remain too close
to the radiation source and breathe in harmful smoke.
If using the lter causes a feeling of discomfort, the working
conditions and the operator's eyesight must be checked.
When working in the open air under strong natural light, it
is possible to use a protection lter with the next-up dark
shade number.
The lter, which is made of hardened adiactinic glass, can
break if allowed to fall from heights of less than one meter
and following accidental knocks against corners or edges,
which can happen if users rotate their heads suddenly.
The lter must be used in combination with suitable
coverings and inner and outer protection shields of the
same dimensions. We recommend using inner and outer
protection shields made of plastic, anti-knock material,
preferably polycarbonate.
When replacing the lter, the coverings and the inner and
outer protection shields refer to the instructions supplied
by the manufacturer of the welding face guard or the
associated hand welding screens. The operator who carries
out replacement operations must have clean hands or wear
non-abrasive gloves.
Numbers of shades and uses recommended for arc welding
1.5 6 10 15 30 40
8
8
8
4 5 6
1.5 6 10 15 30 40
Amper Current
60 70 100 125 150 175 200 225 250 300 350 400 450 500 600
9 10
9 10
9 10
9 10
10
10
9 10
7 8 9 10
60 70 100 125 150 175 200 225 250 300 350 400 450 500 600
- 1 -
To avoid damages during transport or storage, we
recommend keeping the lter in its original packaging.
If the previously indicated cleaning instructions are
scrupulously followed, the
excessively under normal use conditions. REPLACE THE
FILTER IF EVIDENT SIGNS OF DAMAGE SUCH AS CUTS OR
WELDING MATERIAL DEPOSITS APPEAR PERMANENTLY
ON ITS SURFACE AND, IN ANY CASE, AFTER SIX MONTHS.
THE FILTER, ANY COVERINGS AND THE INNER AND
OUTER PROTECTION SHIELDS MUST ALSO BE REPLACED
AFTER EACH SERIOUS IMPACT.
The lter is characterised by a marking with the following
meaning:
FILTER MARKINGS
11 Dark shade number
JY Identi cation code
1 Optical class
CE Marking
Optic class 3 lters and shields are not suitable for
prolonged use.
The material that comes into contact with the skin can cause
allergy reactions in people with particularly sensitive skin.
The certi cation procedure for the JY lter required by
Art. 10 of the 89/686/EEC Directive was carried out by
DIN CERTO Gesellschaft für Konformitätsbewertung mbH,
Alboinstraße 56 D-12103 Berlin, being a noti ed body of the
European Commission (identi cation code 0196).
Table 1 gives the dark shade levels that are recommended
for common electric arc welding procedures at di erent
welding current intensity levels.
ASSEMBLING THE MASK AND THE FILTER
Assemble as shown in the gure (Fig. A).
The operator who carries out replacement operations must
have clean hands or wear non-abrasive gloves.
INFORMATION ON THE MARKING
The marking in the inner lower front section of the TWH
mask is made up of a series of symbols with the following
meaning:
TW Identi cation code
175 Standard number that was referred to for requesting
certi cation
CE CE marking
The certi cation procedure for the TWH mask indicated in
Art. 10 of the 89/686/EEC Directive was carried out by ECS/
GmbH Hüttfeldstraße 50 73430 Aalen, being a noti ed body
of the European Commission (identi cation code 1883).
11 12
11 12
11 12 13
11 12
11 12
11 12 13
11 12 13
11 12
Cod.954433
lter will not deteriorate
13 14
13 14
13 14
13 14
14 15