Telwin GX EN175 F CE Manuel D'instructions page 6

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light scale number
lightest dark scale number
darkest 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
3.3.2 MARKING ON HELMET
The marking found on the "SUPER" 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 certification
mechanical strength: impact at low energy
CE marking
3.3.3 MARKING ON TRANSPARENT EXTERNAL GUARD
The marking on the transparent external guard is composed of a series of symbols with the
following meanings:
Manufacturer's symbol: TELWIN ITALY
Optic class
mechanical strength: impact at medium energy
CE marking
3.3.4 MARKING ON TRANSPARENT INTERNAL GUARD
The marking on the transparent internal guard is composed of a series of symbols with the
following meanings:
Manufacturer's symbol: TELWIN ITALY
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.
3.3.5 MARKING ON AIR FILTER "HFR-1000"
The marking on the visible external part is composed of a series of symbols with the
following meanings, pursuant to EN 12941: 1998 + Amds:
Class
Dust filter
Reusable filter
Protects against solid and liquid aerosols
4. DESCRIPTION
The purified air respirator (PAPR) filters contaminated air and blows it into the crown of the
welding helmet using a flexible breathing tube. The breathing
system generates positive air pressure to help prevent contaminants entering the hood.
4.1 HELMET AND ELECTRO-RESPIRATOR ASSEMBLY: MAIN COMPONENTS (Fig. A, C, D)
The system must include and/or be used with the equipment listed below (Fig. A-1):
(1) helmet with automatic darkening filter,
(2) hood and headgear system;
(5) breathing tube;
(8) belt.
(9) Ventilation unit with (fig. D):
(1) filtration system with:
(2) HEPA filter;
(3) pre-filter;
(4) spark shield cover.
Battery (1) and battery charger (2) (Fig. C-1).
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.
4.2.3 Adjustment of the distance between the face and filter (Fig. B-3)
Loosen the external knobs and slide forward or back until you obtain the desired position,
then tighten again.
4.2.4 Adjustment of inclination (Fig. B-4)
Ideal tilting of the helmet is where the eyes are perpendicular to the surface of the filter.
To adjust the visualisation angle, loosen the knobs on both sides of the helmet and set the
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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
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the preset angle.
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5. ASSEMBLY
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5.1 HELMET ASSEMBLY
Assemble the helmet as in the drawing (FIG. A -2).
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Description of components:
1
(1) Helmet body;
(2) Upper adjustment of the headgear;
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(3) Rear adjustment of the headgear seal;
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(4) Angle assembly of the headgear and visual distance adjustment;
(5) Transparent external protection;
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(6) Battery compartment;
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(7) Delay time adjustment;
(8) Sensitivity adjustment;
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(9) ADF filter cartridge;
(10) LCD visor;
(11) Welding or grinding setting;
(12) Scale number adjustment;
(13) Transparent internal protection;
(14) Filtering device support.
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Insert 2 batteries type CR2450 in the filter before using the helmet (FIG. A-2- (6)).
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5.2 RECHARGE AND CONNECTION OF THE BATTERY PACK (Fig. C-1, C-2)
Remove the battery from the blower unit pressing the release button (4).
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Connect the charge cable (3) to the battery terminal (1).
Connect the battery charger (2) to the mains socket 110V - 240V.
Install the charged battery making it slide on the body of the ventilator until it stops and
clicks into position (Fig.C-2)
ATTENTION!
• Charge the battery before first use or if not used for more than one week. Always
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recharge the battery before it is completely flat.
• Unused batteries must be recharged at least once a year
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• Do not bring the battery close to fire or heat sources that could cause it to explode
B with resulting serious or fatal injuries.
• Charge the battery exclusively using the charger supplied. Recharge in an open and
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well-ventilated environment.
• Use and always preserve the lithium-ion battery packs correctly. On the contrary,
fires or explosions could occur or a negative impact might be had on the respirator
and cause injuries, illness or death.
• The battery charger is intended for indoor use.
• Do not wet battery.
• Do not attempt to dismantle or repair the battery. Lithium-ion batteries are
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maintenance-free.
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• Dispose of the battery - the battery must be correctly disposed of or recycled.
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5.3 AIR FILTER ASSEMBLY (Fig. D)
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Insert the pre-filter (3) over the HEPA filter (2) and push the spark shield cover (4) over the
pre-filter until it "clicks" into position.
Insert the HEPA filter (2) on the body of the ventilator and screw in clockwise.
ATTENTION!
• Do not use the respirator without a spark shield, pre-filter and HEPA particulate
filter installed.
• Replace the air filter, if damaged or obstructed. Do NOT clean with compressed air or
use dirty air filters again.
5.4 CONNECTION OF RESPIRATOR TO HELMET (Fig. A-1)
5.4.1 Connection of breathing tube to ventilator
Insert the end (6) of the breathing tube in the ventilation intake until it fits, then rotate the
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connector 1/8 of a rotation clockwise to lock the breathing tube.
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5.4.2 Connection of breathing tube to hood
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Insert the end (4) of the breathing tube in the end of the headgear and rotate the tube
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clockwise until the breathing tube locks into position.
ATTENTION!
• Check correct installation of the breathing tube to avoid unfiltered air entering the
mask.
• Check correct installation of the O-ring on the tube coupling (6) and check it is
intact.
• Do not use the respirator without the O-ring or if it is damaged.
6. USE
6.1 HELMET USE
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 filter 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 filter, 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.
Table 1 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 filter 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.
Before starting to weld, check the darkening of the ADF with the "TEST" button (if present)
or with a bright light source. If the ADF didn't switch to the dark mode, don't start welding.
The helmet in "GRIND" position can only be used for grinding.
After use and however before repositioning it after work, the helmet must be checked to
ensure it is intact and to eliminate any molten metal drops on the visual filter, which could
reduce performance of the filter.
The helmet must always be repositioned in such a manner to avoid its permanent
dimensional deformation or breaking the protective visual filter.
6.2 RESPIRATOR USE
6.2.1 Ventilator commands (Fig. E)
• To switch on: press the On/Off (1) button for 1 second until ventilation starts. All the leds
switch on, then switch off. The alarm sounds and the ventilator vibrates temporarily and
always starts in the low speed position. Press the On/Off button to alternate between Low
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