Warning! Watch Out! There are possible hazards as shown
in the adjoining symbols.
D Read 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 (ultraviolet and infrared) rays that can burn eyes and skin. Sparks fly off from the weld.
D Wear 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.
D Wear approved safety glasses with side shields under your helmet.
D Use protective screens or barriers to protect others from flash and glare;
warn others not to watch the arc.
D Wear 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.
D Use impact resistant safety spectacles or goggles and ear protection at all
times when using this welding helmet.
D Do not use this helmet while working with or around explosives or
corrosive liquids.
D Do not weld in the overhead position while using this helmet.
D Inspect 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.
D Wear approved ear protection if noise level is high.
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SECTION 2 − SPECIFICATIONS
Viewing Field (XLi, Xlix)97mm x 47mm/3.81” x 1.85”
Viewing Field (Elite)97mm x 60mm/3.81” x 2.62”
Reaction Time (XLi)0.0000555sec (1/18,000)
Reaction Time (Xlix, Elite)0.0000500sec (1/20,000)
are shown. Refer to the illustration that matches the lens on your
helmet.
Auto-On Lens Assembly
1Reset/Auto-On Button
2Variable Shade Control
3Sensitivity/Grind Mode Control
4Lens Delay Control
5Low Battery Indicator
Manual-On Lens Assembly
1On/Auto-Off Button
2Low Battery Indicator
3Variable Shade Control
4Sensitivity Control
5Lens Delay Control
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Reset/Auto-On Button (Auto−On Lens Assembly)
Press the Reset button to check lens operation. If working properly, the
lens will automatically darken twice and then return to the light state.
. The lens will Auto Off (light state − No. 4) 15 − 20 minutes after the last arc. It
is not necessary to press the Reset button to resume welding.
On/Auto-Off Button (Manual-On Lens Assembly)
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 − No. 4) after 15−20 minutes after
the last arc. It will be necessary to press the ON button to resume welding.
Variable Shade Control (No. 9 − No. 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 WeldingArc Current in AmperesProtective Shade No.
Stick ElectrodesLess than 40
MIGLess than 100
Gas Tungsten Arc Welding
(TIG)
Air CarbonLess than 500
Plasma Arc Cutting60−150
Plasma Arc WeldingLess than 50
Page 4
Less than 50
40−80
80−175
175−300
300−500
100−175
175−300
300−500
50−100
100−200
200−400
500−700
150−250
250−400
50−200
200−400
9
10
11
12
13
10
11
12
13
10
11
12
13
12
13
11
12
13
9
10
12
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Sensitivity/Grind Mode Control (Auto-On Lens Assembly)
Sensitivity Control (Manual-On Lens Assembly)
The sensitivity control is used to make the lens more responsive to differing
light levels experienced in various welding processes. We recommend aMid-Range or 30−50% sensitivity setting for most applications. See Ad-
justing Sensitivity and Recommended Sensitivity Settings sections following.
Adjusting Sensitivity
It may be necessary to adjust helmet sensitivity to accommodate different
lighting conditions or if lens is flashing On and Off. Adjust helmet sensitivity
as follows:
. Adjust helmet sensitivity in lighting conditions helmet will be used in.
1Turn sensitivity control to lowest setting.
2Press Reset button (Auto-On Lens) or On/Off button (Manual-On Lens)
to turn helmet On. Helmet lens will darken twice and then clear.
3Face the helmet in the direction of use, exposing it to the surrounding light
conditions.
4Gradually turn sensitivity setting clockwise until the lens darkens, then
turn sensitivity control counterclockwise until slightly past setting where
lens clears. Helmet is ready for use. Slight readjustment may be necessary for certain applications or if lens is flashing on and off.
Using Grind Mode (Auto-On Lens)
To use the Grind mode, turn the Sensitivity control clockwise to the far right
position (Grind). To resume welding, return the control to the desired sensitivity setting.
. Do not weld in the Grind mode; the lens will not darken.
Recommended Sensitivity Settings
Stick ElectrodeMid-Range
Short Circuiting (MIG)Low/Mid-Range
Pulsed & Spray (MIG)Mid-Range
Gas Tungsten Arc (TIG)Mid/High-Range
Plasma Arc Cutting/WeldingLow/Mid-Range
Grind ModeGrind Position − Far Right (Clockwise)
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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. Adjusts from 0.10 second (Min) to 1.0 second (Max).
Low Battery Indicator
The low battery indicator lights when 2−3 days of battery life remain.
Replace the battery with a readily available coin type CR2450 Lithium Battery or
equivalent. (Miller Part No. 217043) (see Section 4).
NOTES
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Adjusting Headgear
XLi Models
. There are four headgear ad-
justments: headgear top, tightness, angle adjustment, and
distance adjustment.
1
4
1Headgear Top
Adjusts headgear for proper depth
on the head to ensure correct balance and stability.
2Headgear Tightness
To adjust, push in the adjusting
knob located on the back of the
headgear and turn left or right to desired tightness.
. If adjustment is limited, it may
be necessary to remove the
comfort cushion.
3Angle Adjustment
Three slots on the right side of the
helmet position the forward tilt of
the helmet. To adjust, loosen the
right outside tension adjustment
knob then lift up on the inside tab
and slide to the desired hole. Re-
2
3
tighten tension adjustment knob.
4Distance 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 positioned for
proper vision.)
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Adjusting Headgear
(Continued)
Xlix and Elite Models−
. There are four headgear adjust-
ments: headgear top, tightness,
angle adjustment, and distance
1
3
adjustment.
1Headgear Top
Adjusts headgear for proper depth
on the head to ensure correct balance and stability.
2Headgear Tightness
To adjust, push in the adjusting knob
located on the back of the headgear
and turn left or right to desired tightness.
. If adjustment is limited, it may be
necessary to remove the comfort cushion.
3Distance Adjustment
Adjusts the distance between the
face and the lens. To adjust, loosen
both outside tension knobs and
press inward to free from adjustment
slots. Move forward or back to de-
2
4
sired position and retighten. (Both
sides must be equally positioned for
proper vision.)
4Angle Adjustment
Four 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 then lift on the
control arm tab and move it to the desired position. Retighten tension adjustment knob.
Page 8
. When using either the front or
back distance adjustment positions, only the center three
angle adjustment pins can be
used.
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Replacement of the Front and Inside Lens Covers
Y Warning! Never use the auto-darkening lens without the inside and
outside lens covers properly installed. Welding spatter will damage
the auto-darkening lens and void the warranty.
XLi –
1Outside − Remove the outside lens cover frame by grasping the outside
corners and pulling gently away from the helmet. Remove the clear lens
cover by pulling the retaining tabs away from the lens. Install the lens
cover replacement by reversing this procedure. (Make certain that the
lens cover frame is secure). We recommend replacing the frame after
five lens cover replacements — see the economical front lens holder kits.
2Inside − Remove the inside lens cover by prying the lens up at the thumb-
nail opening located at the top center of the lens cover. Replace the lens
by gently bowing it in the center and inserting it, one end at a time into
the retaining clips located on the outside of the auto-darkening lens assembly.
. Be sure the cover lens is seated properly (flat) to prevent fogging.
Xlix −
1Outside − Remove the outside lens cover frame by grasping the frame
and pulling directly up toward the helmet top. Remove the clear lens cover by pulling the retaining tabs away from the lens cover. Install the lens
cover replacement by reversing this procedure.
2Inside − Remove the inside lens cover by prying the lens up at the thumb-
nail opening located at the top center of the lens cover. Replace the lens
by gently bowing it in the center and inserting it, one end at a time, into
the retaining clips on the outside of the auto-darkening lens assembly.
. Be sure the cover lens is seated properly (flat) to prevent fogging.
Elite −
1Outside/Inside − To remove either lens cover, first remove the auto-dark-
ening lens assembly. To remove the lens assembly, push down on the
bottom retaining arms and push the retaining clips toward the outside of
the helmet. Then, just lift up on the assembly and pull free of the helmet.
Next, remove the outside lens cover by pushing into the helmet. Remove
the rubber lens gasket and install on the new lens cover. (When reinstalling the lens cover, make certain that smooth surface on the lens gasket
faces forward in the helmet.) Reinstall the lens assembly by reversing the
above procedure.
2Inside − To replace the inside lens cover, remove the auto-darkening
lens assembly from the lens frame by pushing up on the top two retaining
tabs while gently pushing the lens free. Remove the lens cover by sliding
it out of either side. Replace with the new cover lens and reinstall the assembly in the helmet by reversing the above procedure.
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SECTION 4 − BATTERY REPLACEMENT
XLi and Xlix –
Remove the battery by inserting a coin into the slot on the battery cover
and turn to the left to release the cover. Replace with a CR2450 lithium
type battery or equivalent, Miller Part No. 217043. (Note: make certain
that the positive, (+) side of the battery faces up when reinstalling). To reinstall battery cap, position cap with arrows at 6 and 12 o’clock positions
then turn cap 1/4 turn clockwise.
Elite −
To replace the batteries on the Elite remove the auto-darkening lens
assembly. Please refer to the procedure found in the lens cover replacement section. After removing the lens assembly, locate the two battery
compartments located on the bottom. Slide the battery holding trays out
and remove the old batteries. Replace with CR2450 lithium type batteries
or equivalent, Miller Part No. 217043. (Note: make certain that the positive, (+) side of the battery faces up). Reinstall the battery trays. To test,
press the On or Reset button. The lens should flash dark twice. Reinstall
the lens assembly.
. Left and right battery trays are not interchangeable. The auto−darkening helmet
will not work if battery trays are installed on the wrong sides.
OR
Manual-On Lens
Left
Battery Tray
Auto-On Lens
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Right
Battery Tray
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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 wiping with
a soft, dry cloth. (Never use solvents or abrasive cleaning detergents. Do not
immerse the lens assembly in water).
SECTION 6 − TROUBLESHOOTING
SymptomSolution
Not ON – auto-lens will not
darken momentarily when
the Reset or On button is
pressed.
Not switching – auto-lens
stays light and will not
darken when welding.
Not Switching – auto-lens
stays dark after the weld
arc is extinguished, or the
auto-lens stays dark when
no arc is present.
Sections of the auto-lens
are not going dark, distinct
lines separate the light and
dark areas.
Switching or Flickering –
the auto-lens darkens then
lightens while the welding
arc is present.
Inconsistent or lighter
auto-lens shading in the
dark-state, noticeable on
the outside edges and corners.
Check batteries and verify they are in good condition and installed
properly. Also, check battery surfaces and contacts and clean if
necessary. Check battery for proper contact and gently adjust
contact points if necessary. This is particularly important if the
helmet has been dropped. Elite helmets only: verify left and right
battery trays are installed on the correct sides.
Stop welding immediately: Press the Reset button if lens is AutoOn type. If lens if Manual-On type, make sure the lens is turned
On. If power is on, review the sensitivity recommendations and
adjust sensitivity. Clean lens cover and sensors of any obstructions. Make sure the sensors are facing the arc; angles of 45_ or
more may not allow the arc light to reach the sensors.
Fine-tune the sensitivity setting by making small adjustments to
the control by turning it toward the “min” setting. In extreme light
conditions, it may be necessary to reduce the surrounding light
levels.
Stop welding immediately: The auto-lens may be cracked which
can be caused by the impact of dropping the helmet. Weld spatter
on the auto lens may also cause cracking. (The lens may need to
be replaced; most cracked lenses are not covered by warranty).
Review the sensitivity setting recommendations and increase the
sensitivity if possible. Be sure the arc sensors are not being
blocked from direct access to the arc light. Check the lens cover
for dirt and spatter that may be blocking the arc sensors. Increasing Lens Delay 0.1 − 0.3 second may also reduce switching.
Referred to as an angle of view effect, auto-darkening lenses
have an optimum viewing angle. The optimum viewing angle is
perpendicular or 90_ to the surface of the auto-lens. When that
angle of view varies in the dark-state, welders may notice slightly
lighter areas at the outside edges and the corners of the lens. This
is normal and does not represent any health or safety hazard.
This effect may also be more noticeable in applications where
magnifying lenses are used.
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SECTION 7 − INSTALLING OPTIONAL MAGNIFYING LENS
. To prevent lens fogging, install flat side of magnifying lens toward auto-darkening lens.
XLi –
Magnifying lenses can be adapted to the XLi helmet as follows:
1Pull outside lens cover/holder free from helmet.
2Position magnifying lens over auto-darkening lens between the four center-
ing tabs.
3Reinstall outside lens cover/holder over top of magnifying lens.
4Reverse procedure to remove magnifying lens.
Xlix –
Installation:
1Locate magnifying lens holding tabs on lens assembly on inside of helmet.
2Place left side of the magnifying lens under the left side holding tabs.
3Gently push down on right side of magnifying lens. Both sides of lens should
snap in place.
Removal:
1Remove helmet external shade control knob by prying off with a screwdriver
or pulling off with a pliers.
2Remove the shade control retaining nut and allow the control to fall free in-
side the helmet.
3Remove front lens cover frame by sliding it up toward top of helmet.
4Place one hand inside helmet and apply slight pressure to the bottom of the
lens assembly. With other hand, push down on the two bottom retaining tabs
on the front of the helmet. Catch lens assembly as it is released from helmet.
5Slide magnifying lens up and away from the lens holding tabs.
Elite −
1Remove lens holding frame (with auto-darkening lens) from helmet shell.
LIMITED WARRANTY – Subject to the terms and conditions below. Miller
Electric Mfg. Co., Appleton, Wisconsin, warrants to its original retail purchaser that the new Miller equipment sold after the effective date of this
limited warranty is free of defects in material and workmanship at the time
it is shipped by Miller. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL
OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING THE
WARRANTIES OR MERCHANTABILITY AND FITNESS.
Miller XLi, Xlix and Elite Series auto-darkening lens helmets are warranted for 2 years from the date of purchase. Proof of purchase is required
for warranty transactions so it is imperative that a copy of the original invoice or sales receipt be retained.
For warranty transactions, contact your Miller Distributor.
NOTES
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NOTES
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Visit our website at
www.MillerWelds.com
®
Miller Electric Mfg. Co.
An Illinois Tool Works Company
1635 West Spencer Street
Appleton, WI 54914 USA