Miller Ultra HDV User manual

Ultra HDV
Auto-Darkening Helmet w/
Clearlight Lens
OM-288717B 2023-02
OWNER’S MANUAL

TABLE OF CONTENTS
SECTION 1 – SAFETY PRECAUTIONS – READ BEFORE USING. . . . . . . . . . . . . . . . . . . . . . . . . 1
1-1 Symbol Usage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1-2 Arc Welding Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1-3 California Proposition 65 Warnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1-4 Lens Shade Selection Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1-5 Principal Safety Standards. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SECTION 2 – DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2-1 Additional Safety Symbol Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2-2 Miscellaneous Symbols And Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
SECTION 3 – SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SECTION 4 – OPERATING INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4-1 Helmet Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4-2 Helmet Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4-3 Mode Control And Grind/Memo/Low Battery Light. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
4-4 Mode Control Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4-5 Variable Shade Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4-6 Lens Delay Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4-7 Sensitivity Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4-8 Typical Lens Adjustment Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4-9 Arc Time And Arc Count Buttons. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4-10 Memo Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
SECTION 5 – ADJUSTING HEADGEAR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5-1 Adjusting Headgear. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SECTION 6 – REPLACING LENS COVERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6-1 Replacing The Lens Covers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
SECTION 7 – REPLACING THE BATTERY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7-1 Replacing The Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
SECTION 8 – INSTALLING OPTIONAL MAGNIFYING LENS AND SLIDING SIDE
COVERS.................................................................. 19
8-1 Installing Optional Magnifying Lens And Sliding Side Covers . . . . . . . . . . . . . . . . . . . . 19
SECTION 9 – MAINTENANCE AND STORAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
SECTION 10 – TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
10-1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
SECTION 11 – PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
SECTION 12 – LIMITED WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

OM-288717 Page 1
SECTION 1 – SAFETY PRECAUTIONS –
READ BEFORE USING
Protect yourself and others from injury—read, follow, and save these important safety
precautions and operating instructions.
1-1. Symbol Usage
DANGER! – Indicates a hazardous situation which, if not avoided, will result in death
or serious injury. The possible hazards are shown in the adjoining symbols or ex-
plained in the text.
Indicates a hazardous situation which, if not avoided, could result in death or seri-
ous injury. The possible hazards are shown in the adjoining symbols or explained in
the text.
NOTICE – Indicates statements not related to personal injury.
F
Indicates special instructions.
This group of symbols means Warning! Watch Out! ELECTRIC SHOCK, MOVING PARTS, and
HOT PARTS hazards. Consult symbols and related instructions below for necessary actions to
avoid these hazards.
1-2. Arc Welding Hazards
The symbols shown below are used throughout this manual to call attention to and
identify possible hazards. When you see the symbol, watch out, and follow the related
instructions to avoid the hazard. The safety information given below is only a sum-
mary of the more complete safety information found in the Principal Safety Standards.
Read and follow all Safety Standards.
Only qualified persons should install, operate, maintain, and repair this equipment. A
qualified person is defined as one who, by possession of a recognized degree, certifi-
cate, or professional standing, or who by extensive knowledge, training and experi-
ence, has successfully demonstrated the ability to solve or resolve problems relating
to the subject matter, the work, or the project and has received safety training to rec-
ognize and avoid the hazards involved.
During operation, keep everybody, especially children, away.
ARC RAYS can burn eyes and skin.
Arc rays from the welding process produce intense visible and invisible (ultra-
violet and infrared) rays that can burn eyes and skin. Sparks fly off from the
weld.
lWear 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 Principal Safety
Standards). Refer to Lens Shade Selection table in Section 1-4.
lWear approved safety glasses with side shields under your helmet.
lUse protective screens or barriers to protect others from flash, glare, and sparks; warn others
not to watch the arc.
lWear body protection made from leather or flame-resistant clothing (FRC). Body protection in-
cludes oil-free clothing such as leather gloves, heavy shirt, cuffless trousers, high shoes, and
a cap.

OM-288717 Page 2
lBefore welding, adjust the auto-darkening lens sensitivity setting to meet the application.
lStop welding immediately if the auto-darkening lens does not darken when the arc is struck.
NOISE can damage hearing.
Noise from some processes or equipment can damage hearing.
lWear approved ear protection if noise level is high.
WELDING HELMETS do not provide unlimited eye, ear,
and face protection.
Arc rays from the welding process produce intense visible and invisible (ultra-
violet and infrared) rays that can burn eyes and skin. Sparks fly off from the
weld.
lUse helmet for welding/cutting applications only. Do not use helmet for laser welding/cutting.
lUse impact resistant safety spectacles or goggles and ear protection at all times when using
this welding helmet.
lDo not use this helmet while working with or around explosives or corrosive liquids.
lThis helmet is not rated for overhead welding. Do not weld in the direct overhead position
while using this helmet unless additional precautions are taken to protect yourself from arc
rays, spatter, and other hazards.
lInspect the auto-lens frequently. Immediately replace any scratched, cracked, or pitted cover
lenses or auto-lenses.
lLens and retention components must be installed as instructed in this manual to ensure com-
pliance with ANSI Z87.1 protection standards.
lThis helmet provides protection from projectiles associated with grinding, chipping, and re-
lated activities; it is not a hard hat and does not provide protection from falling objects.
READ INSTRUCTIONS.
lRead and follow all labels and the Owner’s Manual carefully before installing,
operating, or servicing unit. Read the safety information at the beginning of the
manual and in each section.
lUse only genuine replacement parts from the manufacturer.
lPerform installation, maintenance, and service according to the Owner’s Manuals, industry
standards, and national, state, and local codes.
FUMES AND GASES can be hazardous.
Welding produces fumes and gases. Breathing these fumes and gases can be
hazardous to your health.
lKeep your head out of the fumes. Do not breathe the fumes.
lVentilate the work area and/or use local forced ventilation at the arc to remove welding fumes
and gases. The recommended way to determine adequate ventilation is to sample for the
composition and quantity of fumes and gases to which personnel are exposed.
lIf ventilation is poor, wear an approved air-supplied respirator.
lRead and understand the Safety Data Sheets (SDSs) and the manufacturer’s instructions for
adhesives, coatings, cleaners, consumables, coolants, degreasers, fluxes, and metals.
lWork in a confined space only if it is well ventilated, or while wearing an air-supplied respirator.
Always have a trained watchperson nearby. Welding fumes and gases can displace air and
lower the oxygen level causing injury or death. Be sure the breathing air is safe.

OM-288717 Page 3
lDo not weld in locations near degreasing, cleaning, or spraying operations. The heat and rays
of the arc can react with vapors to form highly toxic and irritating gases.
lDo not weld on coated metals, such as galvanized, lead, or cadmium plated steel, unless the
coating is removed from the weld area, the area is well ventilated, and while wearing an air-
supplied respirator. The coatings and any metals containing these elements can give off toxic
fumes if welded.
1-3. California Proposition 65 Warnings
WARNING – Cancer and Reproductive Harm — www.P65Warnings.ca.gov.
1-4. Lens Shade Selection Table
Process Electrode Size
in. (mm)
Arc Current in
Amperes
Minimum Pro-
tective Shade
No.
Suggested
Shade No.
(Comfort)*
Shielded Metal
Arc
Welding
(SMAW)
Less than 3/32 (2.4) Less than 60 7 - -
3/32-5/32 (2.4-4.0) 60–160 8 10
5/32-1/4 (4.0-6.4) 160–250 10 12
More than 1/4 (6.4) 250–550 11 14
Gas Metal Arc
Welding
(GMAW)
Flux Cored Arc
Welding (FCAW)
Less than 60 7 - -
60–160 10 11
160–250 10 12
250–500 10 14
Gas Tungsten
Arc
Welding (TIG)
Less than 50 8 10
50–150 8 12
150–500 10 14
Air Carbon Arc
Cutting (CAC-A)
Light Less than 500 10 12
Heavy 500–1000 11 14
Plasma Arc Cut-
ting (PAC)
Less than 20 4 4
20–40 5 5
40–60 6 6
60–80 8 8
80–300 8 9
300–400 9 12
400–800 10 14
Plasma Arc
Welding (PAW)
Less than 20 6 6–8
20–100 8 10
100–400 10 12
400–800 11 14
Reference: ANSI Z49.1:2021
*Start with a shade that is too dark to see the weld zone. Then, go to a lighter shade which gives
a sufficient view of the weld zone without going below the minimum.

OM-288717 Page 4
1-5. Principal Safety Standards
Safety in Welding, Cutting, and Allied Processes, American Welding Society standard ANSI
Standard Z49.1. Website: http://www.aws.org.
Safe Practice For Occupational And Educational Eye And Face Protection, ANSI Standard Z87.1,
from American National Standards Institute. Website: www.ansi.org.
Safety in Welding, Cutting, and Allied Processes, CSA Standard W117.2 from Canadian Stand-
ards Association. Website: www.csagroup.org.
Industrial Head Protection, ANSI/ISEA Standard Z89.1 from American National Standards Insti-
tute. Website: www.ansi.org.
Australian National Work Health Safety Policy from Safe Work Australia. Website: www.safewor-
kaustralia.com.
Safety in Welding and Allied Processes, AS1674.1 and AS1674.2 part 1 and 2 from SAI Global.
Website: www.saiglobal.com.
Helmet 2022–01

OM-288717 Page 5
SECTION 2 – DEFINITIONS
2-1. Additional Safety Symbol Definitions
Warning! Watch Out! There are possible haz-
ards as shown by the symbols.
Accidental ingestion prevention. Keep battery
away from children. Battery is harmful if
swallowed.
2-2. Miscellaneous Symbols And Definitions
Positive
Negative
Power On/
Off

OM-288717 Page 6
SECTION 3 – SPECIFICATIONS
INJURY due to impact. Falling objects can be hazardous.
Head covering by the helmet provides protection from projectile particles, associated
with grinding and chipping. For Australia & New Zealand, rating is "High Impact" in
accordance with AS/NZS1337.1
WARNING: The helmet is not to be considered a hard hat, and will not provide protec-
tion from falling object. If head protection is required consult your safety officer. For
Australia & New Zealand the helmet does not meet the requirements of AS/NZS 1801.
Specification Ultra HDV
Viewing Field 3.81 x 2.62 in. (97 x 60 mm)
Reaction Time 0.0000400 sec (1/25,000)
Available Shades
All Shades Provide Continuous UV And IR
Protection.
Weld Mode Darkened State: No. 8 – No. 12.5
Light State: No. 2.5
Cut Mode Darkened State: No. 5 – No. 8
Light State: No. 2.5
Grind Mode Light State: No. 2.5
X-Mode Darkened State: No. 8 – No. 12.5
Light State: No. 2.5
Sensitivity Control Adjustable For Varying Ambient Light And Weld-
ing/Cutting Arc.
Delay Control Slows Lens Dark-To-Light State Between 0.1 And
1.0 Seconds
Automatic Power Off Shuts Lens Off 45 Minutes After Last Arc Is
Struck
Low Battery Light Red LED Illuminates To Indicate 2−3 Days Re-
maining Battery Life
Power Supply CR2450 Lithium Battery
Sensors Independent/Redundant (Four)
Operating Temperature 14 F to 131° F / −10 C to +55° C
F
When Stored In Extremely Cold Tempera-
tures, Warm Helmet to Ambient Tempera-
ture Before Welding.
Storage Temperature −4 F to 158° F / −20 C to +70° C
F
When Stored In Extremely Cold Tempera-
tures, Warm Helmet to Ambient Tempera-
ture Before Welding.
Total Weight 709 g (25 oz)
Standards EN 379 Optical Class 1/1/1/2 Australian and New
Zealand AS/NZS 1337.1 High Impact AS/NZS
1338.1
Impact Rating High Impact AS/NZS 1337.1 B
Warranty Three Years From Date Of Purchase (Section 12)

OM-288717 Page 7
SECTION 4 – OPERATING INSTRUCTIONS
4-1. Helmet Configurations
The Ultra HDV helmet fea-
tures a flip-up auto-darkening
lens and a separate, clear
grinding shield. Flip the lens
up when grinding and per-
forming other non-welding
work. Flip the lens down when
welding or cutting.

OM-288717 Page 8
4-2. Helmet Controls
1
2
3 4 5
6
7
8
9
F
After One-Touch system
is activated (Section 4-
3), the auto-darkening
lens turns on (darkens)
automatically when
welding begins and
turns off when welding
stops.
1 Mode (On/Off) Button (On/
Off) (Section 4-3)
2 Grind/Memo Low Battery
Light (Section 4-3)
3 Variable Shade Control
Buttons (See Section 4-5)
4 Lens Delay Control But-
tons (See Section 4-6
5 Sensitivity Control Buttons
(Section 4-7)
6 Grind Button
7 Arc Time Button
8 Arc Count Button
9 Memo Buttons
F
The lens assembly
saves the shade, sensi-
tivity, and delay settings.
F
Activate lens by pressing
the Mode (On/Off) but-
ton longer than one sec-
ond (Section 4-3).
F
The Memo 1 and Memo
2 buttons save the cur-
rent mode, shade, sen-
sitivity, and delay
settings (Section 4-10).

OM-288717 Page 9
4-3. Mode Control And Grind/Memo/Low Battery Light
1
2
F
After One-Touch system is activated),
the auto-darkening lens turns on (dark-
ens) automatically when welding be-
gins and turns off when welding stops.
1 Mode Button
Activate lens by pressing the Mode button
longer than one second.
Press Mode button to check if the lens is
working properly and to begin lens
adjustments.
When the Mode button is pressed, the hel-
met control menu is displayed. Do not use
the helmet if the lens does not function as
described.
2 Grind/Memo/Low Battery Light
The Grind/Memo/Low Battery light blinks red
when the lens is in the Grind mode. The red
light remains lit when 2–3 days of battery life
remains.
If battery power is low, replace with CR2450
lithium battery (one required). See Section
7-1.

OM-288717 Page 10
4-4. Mode Control Settings
1
2
1 Mode (On/Off) Button
2 Grind Mode Button
Press Mode button to select the mode ap-
propriate for the work activity:
Weld Mode- Used for most welding applica-
tions. In this mode the lens turns on when it
optically senses a welding arc. Adjust
shade, sensitivity, and delay settings as
needed.
Cut Mode- Used for cutting applications. In
this mode the lens turns on when it optically
senses a cutting arc. Adjust shade, sensitiv-
ity, and delay settings as needed.
X-Mode - Used for outdoor or low current
welding applications. In this mode the lens
turns on when it senses weld current. Adjust
shade, sensitivity, and delay settings as
needed.
Grind Mode- Used for metal grinding appli-
cations. In this mode the shade is fixed
shade No. 3. No lens adjustments are
possible.
To use the Grind mode, press the Grind but-
ton once. Press Mode button to return to pri-
or setting.

OM-288717 Page 11
4-5. Variable Shade Control
1
2
1 Mode Control Button
2 Variable Shade Adjust-
ment Buttons
Use the Light and Dark adjust-
ment buttons to adjust the
lens shade in the darkened
state. Use the table in Section
1-4 to select proper shade
control setting based on your
welding process. The shade
ranges for each mode are as
follows:
Weld- No. 8 – No. 13
Cut - No. 5 – No. 8
Grind - No. 3 only
X-Mode - No. 8 – No. 13
Start at the highest setting
and adjust lighter to suit the
application and your personal
preference.
Variable Shade Adjustment
Procedure
lPress the Mode (On/Off)
button to turn lens On.
Helmet display appears.
lPress Mode (On/Off) But-
ton to select desired func-
tion: Weld, Cut, Grind, or
X-Mode.
lUse Light and Dark ad-
justment buttons to select
desired shade.
lBegin welding or continue
with other lens
adjustments.

OM-288717 Page 12
4-6. Lens Delay Control
1
2
1 Mode (On/Off) Button
2 Lens Delay Adjustment Buttons
Use the Lens Delay Fast and Slow buttons
to adjust the time for the lens to switch to the
clear state after welding or cutting.
The delay is particularly useful in eliminating
bright after-rays present in higher amperage
applications where the molten puddle re-
mains bright momentarily after welding. Use
the Lens Delay Fast and Slow buttons to ad-
just delay from 0 to 10 (0.1 to 1.0 second).
The delay ranges for each mode are as
follows:
Weld, Cut, And X-Modes - No. 0–No. 10
Grind Mode- No delay adjustment
F
There is no lens delay adjustment in
the Grind mode.
Lens Delay Adjustment Procedure
lPress Mode (On/Off) button to turn lens
On. Helmet control display appears.
lPress Mode button to select desired
function: Weld, Cut, or X-Mode.
lUse Lens Delay Fast and Slow buttons
to select desired delay.
lBegin welding or continue with other
lens adjustments.

OM-288717 Page 13
4-7. Sensitivity Control
1
2
1 Mode (On/Off) Button
2 Sensitivity Adjustment Buttons
Use Sensitivity control to make the lens more
responsive to different light levels in various
welding processes. Use a Mid-Range or 30-
50% sensitivity setting for most
applications.
It may be necessary to adjust helmet sensi-
tivity to accommodate different lighting condi-
tions or if lens is flashing On and Off.
The sensitivity ranges for each mode are as
follows:
Weld, Cut, X-Modes - No. 0 – No. 10
Grind Mode - No sensitivity adjustment
Do not weld in the Grind mode; the
lens will not darken.
Sensitivity Adjustment Procedure
F
Adjust helmet sensitivity in lighting con-
ditions helmet will be used in.
lPress Mode (On/Off) button to turn hel-
met On. Helmet display appears.
lPress Mode (On/Off) button to select de-
sired function: Weld, Cut, or X-Mode.
lUse Sensitivity Up and Down buttons to
adjust sensitivity control to lowest
setting.
lFace the helmet in the direction of use,
exposing it to the surrounding light
conditions.
lPress Sensitivity Up button until the lens
darkens, then press Sensitivity down
button until lens clears.
Helmet is ready for use. Slight readjustment
may be necessary for certain applications or
if lens is flashing on and off.
F
Reduce Sensitivity setting if lens stays
dark longer than Delay setting.
Recommended Sensitivity Settings
Stick Electrode Mid-Range
Short Circuiting (MIG) Low/Mid-Range
Pulsed And Spray (MIG) Mid-Range
Gas Tungsten Arc (TIG) Mid/High-Range
Plasma Arc Cutting/Welding Low/Mid-Range

OM-288717 Page 14
4-8. Typical Lens Adjustment Procedure
2
F
Lens assembly displays
prior settings when
turned On. Retained set-
tings are not shown in
example.
F
In the Grind mode the
lens is a fixed shade No.
3. No lens adjustments
are possible.
Adjusting Lens Assembly
lTurn lens On. Display
screen appears.
lSelect mode (Weld, Cut,
Grind, X-Mode).
lSelect shade by pressing
Light (-) and Dark (+)
buttons.
lSelect Delay by pressing
Fast (-) and Slow (+)
buttons.
lSelect Sensitivity by
pressing Down (-) and Up
(+) Buttons.
lBegin work.

OM-288717 Page 15
4-9. Arc Time And Arc Count Buttons
1 2
Press the Mode (On/Off) button to select ei-
ther the Arc Time or Arc Count function.
1 Arc Time Button
Press Arc Time button to record the amount
of time the lens assembly is in the dark state
(exposed to arc). Press and hold the Arc
Time button to reset.
2 Arc Count Button
Press Arc Count button to record the num-
ber of times the lens darkens (exposed to
arc). Press and hold the Arc Count button to
reset..
F
The lens automatically exits either
function after 30 seconds of inactivity.
4-10. Memo Buttons
1
1 Memo Buttons
Use Memo buttons 1 and 2 to save (and re-
store) lens mode, shade, delay, and sensitiv-
ity settings. Each Memo button can save
one group of settings.
lPress Memo 1 or Memo 2 button for
one second to save the lens current
settings.
lPress Memo 1 or Memo 2 button to re-
store the Memo 1 or Memo 2 saved
settings.

OM-288717 Page 16
SECTION 5 – ADJUSTING HEADGEAR
5-1. Adjusting Headgear
14
2
F
There are four headgear adjustments:
headgear top, tightness, angle, and
distance.
1 Headgear Top
Adjusts headgear for proper depth on the
head to ensure correct balance and stability.
2 Headgear Tightness
To adjust, turn the adjusting knob located on
the back of the headgear left or right to de-
sired tightness.
3 Angle Adjustment (Not Shown)
Seven slots on the right side of the head-
band provide adjustment for the forward tilt
of the helmet. To adjust, lift and reposition
the control arm to the desired position.
4 Distance Adjustment
Adjusts the distance between the face and
the lens. To adjust, press black tabs on the
top and bottom of the pivot point and use
other hand to slide headgear forward or
backward. Release tabs. (Both sides must
be equally positioned for proper vision.)
F
Numbers on the adjustment slides indi-
cate set position so both sides can be
adjusted equally.

OM-288717 Page 17
SECTION 6 – REPLACING LENS COVERS
6-1. Replacing The Lens Covers
22
13
4
5
Never use the auto-darkening lens
without the inside and outside lens
covers properly installed. Welding
spatter will damage the auto-darken-
ing lens and void the warranty.
Outside Lens Cover
1 Outside Lens Cover
2 Outside Lens Cover Release Points
Remove outside lens cover by pulling the
cover away from the helmet on either side of
the lens cover.
Inside Lens Cover
3 Auto-Darkening Lens
4 Inside Lens Cover
Remove the inside lens cover by pulling top
center of lens cover from lens holding chan-
nels. Replace the lens cover by gently bow-
ing it in the center and inserting it, one end
at a time, into the lens holding channels.
F
Be sure the cover lens is seated prop-
erly to prevent fogging.
Auto-Darkening Lens
5 Lens Release Tab
Remove outside lens cover as instructed
previously. Press up on lens release tab
while pushing auto-darkening lens assembly
out of shell from the inside.
Reinstall lens by aligning lens on release
tabs. Press on lens until it snaps into place.

OM-288717 Page 18
SECTION 7 – REPLACING THE BATTERY
7-1. Replacing The Battery
+
1
To replace the battery, begin by removing
the auto-darkening lens assembly (see Sec-
tion 6-1).
1 Battery Tray
After removing the lens assembly, slide the
battery holding tray out and remove the old
battery.
Replace with CR2450 lithium battery (one
required).
F
Be sure Positive (+) side of the battery
faces up (toward inside of helmet).
Reinstall the battery tray. To test, press the
Mode (On/Off) button. The display screen
should turn on. Reinstall the lens assembly.