Hobart XTF Manuale utente
Auto-Darkening Welding Helmet
XT Series
Models: XTF/XTV/XTP
OM-221 534C
2006−03
Table Of Contents
SECTION 1 −SAFETY PRECAUTIONS −
READ BEFORE USING 1. . . . . . . . . . . . . . . . . . . .
SECTION 2 −SPECIFICATIONS 2. . . . . . . . . . . . . . . . . . . . . . . .
SECTION 3 −OPERATING INSTRUCTIONS 5. . . . . . . . . . . . . .
SECTION 4 −BATTERY REPLACEMENT 8. . . . . . . . . . . . . . . .
SECTION 5 −MAINTENANCE 8. . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 6 −TROUBLESHOOTING 9. . . . . . . . . . . . . . . . . . . . .
SECTION 7 −LIMITED WARRANTY 10. . . . . . . . . . . . . . . . . . . . .
SECTION 8 −REPLACEMENT PARTS 11. . . . . . . . . . . . . . . . . . .
Page 1
SECTION 1 −SAFETY PRECAUTIONS −
READ BEFORE USING
Warning! Watch Out! There are possible hazards as shown
in the adjoining symbols.
DRead and follow Section 1 for all safety symbols.
ARC RAYS can burn eyes and skin.
Arc rays from the welding process produce intense visible and invisible (ultravio-
let and infrared) rays that can burn eyes and skin. Sparks fly off from the weld.
DWear a welding helmet fitted with a proper shade of filter to protect your
face and eyes when welding or watching (see ANSI Z49.1 and Z87.1 listed
in Safety Standards). Refer to Shade and Sensitivity charts in Section 2.
DWear approved safety glasses with side shields under your helmet.
DUse protective screens or barriers to protect others from flash and glare;
warn others not to watch the arc.
DWear protective clothing made from durable, flame-resistant material
(leather and wool) and foot protection.
WELDING HELMETS do not provide unlimited eye, ear and
face protection.
DUse impact resistant safety spectacles or goggles and ear protection at all
times when using this welding helmet.
DDo not use this helmet while performing grinding operations, working with
or around explosives or corrosive liquids.
DDo not weld in the overhead position while using this helmet.
DInspect the auto-lens frequently. Immediately replace any scratched,
cracked, or pitted cover lenses or auto-lenses.
NOISE can damage hearing.
Noise from some processes or equipment can damage hearing.
DWear approved ear protection if noise level is high.
Page 2
SECTION 2 −SPECIFICATIONS
XTF Technical Specifications (Fixed Shade #10)
Cartridge Dimensions 4.33 x 3.54 x 0.39 in (110 x 90 x 10 mm)
Viewing Field 3.75 x 1.37 in (95 x 35 mm)
Reaction Time Light to dark: 0.00028 second (1/3,600)
Dark to light: 0.12 second
Available Shades Darkened State: #10 / Light State: #3
Sensors Independent (Two)
Operating Temperature 23_F to 131_F (−5_C to +55_C)
Storage Temperature −4_F to 176_F (−20_C to +80_C)
Power Supply Battery-powered, solar rechargeable
(internal, non-replaceable lithium battery)
Total Weight 1 lb (454g)
Standards ANSI Z87.1-2003/CSA
Warranty 2 years from date of purchase (see Section 7)
Lens
NOTE: Expose the solar cell to bright sunlight for 30 minutes before use.
Page 3
XTV Technical Specifications (#9 −#12 Variable Shade)
Cartridge Dimensions 4.33 x 3.54 x 0.39 in (110 x 90 x 10 mm)
Viewing Field 3.75 x 1.57 in (95 x 40 mm)
Reaction Time 0.000083 second (1/12,000)
Available Shades ANSI: Darkened State: #9 −12 / Light State: #4
CE/CSA: Darkened State: #9 −13 / Light State: #4
Sensors Independent/redundant (Two)
Operating Temperature 23_F to 131_F (−5_C to +55_C)
Storage Temperature −14_F to 158_F (−10_C to +70_C)
Power Supply 2 AAA Alkaline batteries (included)
Total Weight 1 lb (454g)
Standards ANSI Z87.1-2003 CE/CSA
Warranty 2 years from date of purchase (see Section 7)
Sensitivity Control light levels Adjusts for varying ambient light and welding arc
Delay Control Slows lens dark-to-light state between 0.1 and
0.5 seconds (fast/slow switch)
Automatic Power Off Shuts lens off 15−20 minutes after last arc is struck
Low Battery Indicator Red LED light illuminates to indicate low battery
Battery Compartment
(2 AAA Alkaline Batteries Included)
Shade Control
Sensitivity Control
Delay Control
Lens
Low Battery
Indicator
On/Off Button
Page 4
XTP Technical Specifications (Professional #9 −#13 Variable Shade)
Cartridge Dimensions 4.33 x 3.54 x 0.39 in (110 x 90 x 10 mm)
Viewing Field 3.81 x 1.85 in (97 x 47 mm)
Reaction Time 0.0000625 second (1/16,000)
Available Shades Darkened State: #9 −13 / Light State: #4
Sensors Independent/redundant (Two)
Operating Temperature 140_F to 1310_F (60_C to +710_C)
Storage Temperature −40_F to 1580_F (−40_C to +860_C)
Power Supply CR2450 Lithium battery (Hobart 770284)
Total Weight 1 lb (454g)
Standards ANSI Z87.1-2003/DIN/CE/TUV/CSA
Warranty 2 years from date of purchase (see Section 7)
Sensitivity Control light levels Adjusts for varying ambient light and welding arc
Delay Control Slows lens dark-to-light state between 0.1 and
1.0 seconds (infinite dial control)
Automatic Power Off Shuts lens Off 15−20 minutes after last arc is struck
Low Battery Indicator Red LED light illuminates to indicate low battery
Battery
Compartment
(Lithium
Battery Included)
Shade Control Sensitivity Control Delay Control
Lens
Low Battery
Indicator
On/Off Button
Page 5
SECTION 3 −OPERATING INSTRUCTIONS
On/Auto-Off Button
Locate the ON button and press ON to weld. The lens will automatically
darken twice and then return to the light state. The helmet is then ready
to weld.
Note: The lens will Auto-Off (clear state −#4) 15−20 minutes after the last
arc. It will be necessary to press the ON button to resume welding.
Note: The XTF model has no On/Auto-Off button; the helmet turns on au-
tomatically.
Variable Shade Control
Model XTF −Fixed Shade #10
Model XTV −Variable Shade #9 −#12
Model XTP −Variable Shade #9 −#13
Use the shade chart below to select proper shade control setting based
on your welding process. We recommend starting at shades 12 or 13 and
adjust lighter based on the welding application and personal preference.
Application Welding Arc Current in Amperes Protective Shade No.
Stick Electrodes Less than 40
40−80
80−175
175−300
#9
#10
#11
#12 −#13
MIG Less than 100
100−175
175−300
#10
#11
#12 −#13
Gas Tungsten Arc Welding
(TIG) Less than 50
50−100
100−200
200−300
#10
#11
#12
#13
Page 6
Sensitivity Control (XTV And XTP Models Only)
The sensitivity control is used to make the lens more responsive to differ-
ing light levels experienced in various welding processes. We recom-
mend a (Mid-Range or 30−50%) sensitivity setting for most applica-
tions. Please refer to the chart below for recommended settings.
Recommended Sensitivity Settings
Stick Electrode Mid-Range
Short Circuiting (MIG) Low/Mid-Range
Gas Tungsten Arc (TIG) Mid/High-Range
Plasma Arc Cutting/Welding Low/Mid-Range
Helpful Hint For Setting Sensitivity In Low Amperage Tig, 50
Amps And Below:
1. Face the helmet front toward the floor.
2. Turn the sensitivity setting toward HI until the lens darkens.
3. Now, reduce the sensitivity by turning the control to the left until the
lens lightens; you are then ready to weld.
4. When job is completed, return sensitivity control to mid-range.
Lens Delay Control
The lens delay control is used to slow the lens-switching time to the clear
state after welding. The delay is particularly useful in eliminating bright
after-rays present in higher amperage applications where the molten
puddle remains bright momentarily after welding.
Low Battery Indicator
The low battery indicator lights when 2−3 days of battery life remain (see
battery recommendations below).
Model XTF: Non-replaceable Lithium battery.
Model XTV: Replace with 2 AAA Alkaline batteries.
Model XTP: Replace with Lithium battery CR2450.
Page 7
Adjustment of the Headgear for Maximum Comfort
There are four adjustments on Hobart headgear that can be adjusted for
maximum comfort:
1. Headgear Top – Adjusts headgear for proper depth on the head to en-
sure correct balance and stability.
2. Headgear tightness – To adjust, turn knob located on the back of the
headgear left or right to desired tightness.
3. Stop angle adjustment – Five pins on the right side of the headband top
provide adjustment for the forward tilt of the helmet. To adjust, loosen the
right outside tension adjustment knob and lift on the control arm tab to
move it to the desired position. Retighten tension adjustment knob.
4. Distance adjustment – Adjusts the distance between the face and the
lens. To adjust, loosen both outside tension knobs and slide forward or
back to desired position and retighten. (Both sides must be equally posi-
tioned for proper vision.)
Replacement of the Front and Inside Lens Covers
YWarning! Never use the auto-darkening lens without the inside
and outside lens covers properly installed. Welding spatter will
damage the auto-darkening lens voiding the warranty.
1. Outside −Place helmet on a flat surface. Grasp the front lens holder
with one hand while pushing the inside retaining clips of the lens hold-
er outward. Do one side at a time, gently pulling the front lens holder
away from the helmet as each tab is released from its retaining clip.
Once released, the outside cover lens can be replaced.
2. Inside −Remove the inside lens cover by following the procedure in
Step 1. With the auto-darkening lens removed from the helmet, re-
move the inside cover lens by prying the lens up at the thumbnail
opening located at the top center of the cover lens. Replace the lens
by gently bowing it in the center and inserting it, one end a time, into
the retaining clips located on the outside of the auto-darkening lens
assembly.
3. Reinstalling auto−darkening lens assembly −Gently place auto−
darkening lens in front of helmet. (Be careful not to drop lens.) Install
front lens cover with gasket. Grasp front lens holder and slowly insert
the six retaining pieces into front of helmet. (Make certain you gently
squeeze the outside edges of the front lens holder while inserting tabs
into helmet.) From the inside of helmet, gently push the retaining tabs
in to secure the front lens holder in place.
Page 8
SECTION 4 −BATTERY REPLACEMENT
Model XTV: Remove the batteries by sliding the cover plate to the left. Re-
place with 2 AAA alkaline batteries. (Note: be sure the positive (+) side
of the battery is aligned with positive (+) terminal.) Replace cover plate
and then press On button.
Model XTP: Remove the batteries by turning the battery cover counter-
clockwise 90 degrees. Replace with Lithium battery CR2450. (Note: be
sure the battery positive (+) terminal is up.) Replace the cover and then
press On button.
NOTE: The XTF model has a non-replaceable Lithium battery.
SECTION 5 −MAINTENANCE
Cleaning
The helmet requires little maintenance, however for best performance we
recommend cleaning after use. Using a soft cloth dampened with a mild
soap and water solution, wipe the cover lenses clean. Allow to air dry.
Occasionally, the filter lens and sensors should be cleaned by gently wip-
ing with a soft, dry cloth. (Never use solvents or abrasive cleaning de-
tergents. Do not immerse the lens assembly in water).
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