ArcPro 20702 Installer manual

Auto Darkening
Welding Helmet
Model 20702
Read and understand this entire manual before operating or
servicing this product.
SAVE THIS MANUAL
Copyrightc2011 by ArcPro. All rights reserved. No portion of this manual or any artwork contained
herein may be reproduced in any shape or form without the express written consent of ArcPro. Due to
continuing improvements, actual product may differ slightly from the product described herein.
Instruction Manual
&
Parts Catalog

IMPORTANT SAFETY
INFORMATION
This is a SAFETY ALERT symbol.
It is used to alert you to
potential personal
injury hazards. Obey all
safety messages that follow
this symbol to avoid possible injury or death.
DANGER indicates a
hazardous situation which, if not avoided,
will result in death or injury.
WARNING indicates a
hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION indicates a
hazardous situation which, if not avoided,
could result in minor or moderate injury.
NOTICE indicates
important information which, if not followed,
may cause damage to equipment.
SAVE THIS MANUAL
Keep this manual for the warnings and pre-
cautions, the operating instructions and the
maintenance tips that are included in it.
Write the product’s model number and pur-
chase date on the cover page of this man-
ual. Keep your purchase receipt in a safe
location.
UNPACKING
The shipment should be thoroughly inspected as
soon as it is received. The signed “bill of lad-
ing” is acknowledgement by the carrier of receipt
in good condition or shipment covered by our
invoice. For your own protection, if any of the
goods called for on the bill of lading are shorted
or damaged, do not accept them until the carrier
makes a notation on the freight bill of the shorted
or damaged goods.
Notify ArcPro immediately if any hidden loss
or damage is discovered after receipt.
DANGER
WARNING
CAUTION
NOTICE
INSTRUCTION
MANUAL
WARNING concerning Risk of Eye
Injury. Wear ANSI approved impact
safety goggles with side shields,
under the Welding Helmet.
WARNING concerning Risk of
Hearing Loss. Wear hearing pro-
tection.
WARNING concerning Risk of
Respiratory Injury. Wear NIOSH
approved dust mask/respirator.
WARNING concerning Risk of Inha-
lation of welding toxic fumes.
Denition of Symbols
IMPORTANT SAFETY
INSTRUCTIONS
Read and understand all
safety warnings and in-
structions. Failure to follow the warnings
and instructions may result in serious injury
or death. Save all warnings and instructions
for future reference.
2. Personal and Work Area Safety
A. Always wear ANSI approved
impact safety goggles with
side shields, under the
Welding Helmet.
B. Always wear hearing protec-
tection when working in
noisy environments. Prolonged exposure
to high intensity noise can cause hearing
loss.
C. Use safety equipment. Safe-
ty shoes, welding helmet, work
gloves and dust mask/resperator must be
used for applicable conditions.
Model 20702 Page 2

Model 20702 Page 3
D. Dress appropriately. Never wear loose
tting clothing or jewelry when working.
Contain long hair, and keep hair, clothing
and gloves away from moving parts. Wear
protective gear such as a leather weld-
ing apron, welding sleeves, pants without
cuffs and work boots.
E. Use common sense when working.
Stay alert and concentrate when using this
product. Never work while under the inu-
ence of alcohol, drugs or medications.
F. Never use Welding Helmet in rainy, wet
or damp conditions.
G. Keep proper footing and good bal-
ance at all times while working.
H. Never use this product in explosive
atmospheres. Do not use in presence of
ammable gases, liquids or dust. Sparks
could result in ignition of fumes or dust.
3. Product Usage.
A. Before each use, check for broken
parts and any condition that may affect
the operation of the Welding Helmet. Do
not use if the lens or helmet are cracked.
The product must be serviced by a qualied
technician if any problem is noted.
B. Always maintain the product properly.
A well maintained product will perform better.
C. This Welding Helmet is designed to
provide protection for ARC and MIG weld-
ing. The Welding Helmet is not appropri-
ate for use when TIG welding, plasma
cutting, laser welding, performing Oxy-
acetylene welding/cutting, or for over-
head welding.
D. ANSI (American National Standards
Institute) denes all welding helmets as
Personal and Work Area Safety (continued)
4. Specic Safety Instructions
A. The warnings and precautions reviewed
in this manual cannot cover all possible
conditions and situations that may occur.
The product’s user must understand that
common sense and caution are factors that
cannot be built into this product, but must be
supplied by the user.
B.
INHALATION HAZARD:
Welding and Plasma Cutting Produce
TOXIC FUMES
Exposure to welding or cutting exhaust
fumes can increase the risk of developing
certain cancers, such as cancer of the lar-
ynx and lung cancer. Also, some diseases
that may be linked to exposure to welding or
plasma cutting exhaust fumes are:
- Early onset of Parkinson’s Disease
-Heart Disease
-Ulcers
-Damage to the reproductive organs
-Inammation of the small intestine or
stomach
-Kidney damage
secondary protection from optical radia-
tion and impact. Always wear primary
protection such as ANSI approved safety
goggles with side shields. This welding
helmet will not protect against severe impact
hazards. This welding helmet will not protect
against corrosive liquids or explosive ob-
jects.
E. Only use the Welding Helmet within the
operating temperature range specied in the
Specications section of this manual.
WARNING

Model 20702 Page 4
Specic Safety Instructions (continued)
WARNING
-Respiratory diseases such as em-
physema, bronchitis, or pneumonia
Use natural or forced air ventilation and wear
a respirator approved by NIOSH to protect
against the fumes produced to reduce the
risk of developing these illnesses.
C. If the Auto Darkening Welding Helmet
does not darken upon striking an arc,
immediately stop welding. The helmet
should be checked by a qualied service
technician.
D. Never place the Auto Darkening lter
on a hot surface. Never open or attempt to
modify the Auto Darkening lter.
E. Failure to com-
ply with the warnings already stated
could result in blindness, and/or severe
personal injury.
SAVE THESE WARNINGS
USING THE AUTO DARKENING
WELDING HELMET
This Auto Darkening Welding Helmet is de-
signed to be used for ARC and MIG welding.
The helmet lter automatically changes from
a light state (shade 4) to a dark state (shade
9 to 13) when an arc is struck. The helmet
lter returns to the light state (shade 4) when
the welding is completed.
Arc rays generated by welding produce
powerful visible and invisible (Ultraviolet and
Infrared) rays that can damage eyes and
skin.
When welding or when in close proxim-
ity to a welding operation, always wear
a welding helmet tted with the proper
shade to protect yourself. Underneath the
helmet, always wear ANSI approved safety
goggles with side shields.
In addition to offering protection while weld-
ing, the helmet has a “Grinding” mode where
the lter changes to a shade DIN 4. This
mode is used when grinding for pre-weld
preparation and post-weld clean up activi-
ties.
Steps needed to get the the Welding Hel-
met ready for use:
1. Remove protective lm from each side
of the lter’s lens (both outside frame and
inside the helmet).
2. Make sure that the lter’s frame is solidly
secured in place. Check the outer lens to
make sure that it is clean and not scratched.
3. Adjust the Headband to meet your indi-
vidual requirements.
-Use the ratcheting knob on the headband to
adjust width.
-Loosen or tighten the top strap to adjust
headband height. Make sure that the Hel-
met ts rmly on your head.
-With the headband on your head, lower the
Welding Helmet over your face. Lock in the
proper Helmet position by using the Adjust-
ment Knobs on either side of the Helmet
(see illustration and photo below). Make
sure that the front lens frame is aligned with
your eyes.
10” to 12”
--- Adjustment Knob

Model 20702 Page 5
Selecting Shade Number
Select the protective shade number needed
for your particular welding application (see
chart on page 7). Use the Shade Control
Knob on the side of Welding Helmet to dial
in the shade number needed (from 9 to 13).
The arrow on the knob indicates the shade
setting.
If more than one shade is recommended for
your job, always try the darkest shade set-
ting rst.
Always test the auto
darkening lens before welding. With the
helmet on your head and in position over
your face, strike a brief arc while keeping
your eyes and face slightly turned away to
one side. The lens should darken evenly
even though it is not directly facing the
arc. If this is not the case, do not use the
Welding Helmet and have it serviced by a
qualied service technician.
Lens Sensitivity Control
This control on the inside of the Helmet
allows the lens to be more responsive to
various light levels in different welding appli-
cations. See photo upper right.
The LOW position is best for higher amper-
age welding and for welding in bright light
conditions.
The HIGH position is designed for low am-
perage welding and when welding in lower
light conditions.
WARNING
Welding Mode / Grinding Mode
As seen in the above photo, on the inside of
the Helmet is a switch to designate whether
the Helmet is in Welding mode or Grinding
mode. Make sure the switch is to the right
when welding and to the left when grinding.
Solar Cells / Batteries
The Welding Helmet uses solar cells for
power supply, backed up by a built-in battery.
The battery is non-replacable and designed
to last for many years.
Shade Control Knob
Low / High Sensitivity Grinding / Welding Mode

Model 20702 Page 6
Power Source Solar Powered Cells with
non-replacable back up
battery
Power ON/OFF Fully Automatic
Lens Type ANSI Z87.1-2010 ap-
proved
Viewing Field 3.86” x 1.61”
Cartridge Size 4.33” x 3.54” x 0.35”
Light Shade State Shade DIN 4
Darkened Shade State Shade DIN 9 to DIN 13
Variable
UV/IR Protection* Permanent Shade DIN 16
Sensors Two
Grinding Shade State Shade DIN 4
Sensitivity Control High/Low Switch
Reaction Time 1/10,000 second
Operational Temperature 23 degrees F to 131 de-
grees F
Storage Temperature -4 degrees F to 158 de-
grees F
Cartridge Specications
*UV/IR auto-darkening lters provide full protec-
tion to eyes/face during the welding procedure,
even when in clear state (UV/IR protection is
shade DIN 16 all the time).
Maintaining the Welding Helmet
1. Clean the Front and Inside Cover Lens
with a dry lint-free cloth or tissue. Never
immerse the Cover Lens in water and do
not use solvents or abrasive products in the
cleaning process.
2. Keep the Welding Helmet clean by using
a mild soap and damp cloth. After cleaning,
dry the helmet with a clean cloth.
3. Replace the Front Cover Lens when it
becomes cracked, scratched or damaged in
any other way.
To replace the Lens: Lift up on tab at bottom
of Frame and pull out the Lens.
Remove protective lm on the new Lens.
Put the new Lens into place and snap Front
Frame to secure Lens into position.
4. The Cartridge is not replaceable. Do not
attempt to open or remove this Cartridge
from the Helmet.
Troubleshooting
1. Unclear vision. To correct, clean Front
and Inside Cover Lens and clean Cartridge.
Made sure shade number selected is correct
for the application. Made sure surrounding
light in the workplace is adequate.
2. Inconsistant Darkening. Headband
may need adjusting. Made sure Headband
positions Lens so that it is equal distance
from left and right eye.
3. Cartridge Does Not Darken. If the Auto-
Darkening Cartridge does not darken, or
has a uttering image, the front Cover Lens
should be cleaned along with the sensors
in the Cartridge (clean surface of sensors).
Use a soft clean cloth to clean.
This problem could also be caused by too
low of a weld current. Correct by switching
the Lens Sensitivity Control on the inside of
Helmet to “LOW”.
4. Too Slow Response Time. Never use
Welding Helmet in temperatures below 23
degrees Fahrenheit. When the Welding
Helmet is stored in very cold temperatures,
warm the Helmet to ambiant temperature
before using.
Limited Warranty
ArcPro warrants to the original retail purchaser
that the product is free of defects in material
and workmanship at the time of shipment. This
Welding Helmet is warranteed for 90 days from
the date of purchase. This warranty is expressly
in lieu of all other warranties, express or implied.
Proof of purchase is required for warranty trans-
actions; a copy of the original invoice or sales
receipt is required.

Model 20702 Page 7
Recommended Shade Settings
Welding Application Arc Current in Amperes Protective Shade Number
MIG Less than 100 10
100 - 175 11
175 - 300 12
300 - 500 13
Stick Electrodes Less than 40 9
40 - 80 10
80 - 175 11
175 - 300 12
300 - 500 13
Plasma Arc Welding Less than 50 11
50 - 200 12
200 - 400 13
Flux Core Less than 175 10
175 - 225 11
225 - 275 12
275 - 350 13
Parts List and Diagram
1 Helmet
2. Adjustable Headband
3. Front Velcro Cover
4. Inside Lens Cover
5. Cartridge
6. Front Lens Cover
7. Retaining Frame
7
6
5
4
1
3
2
Model 20702 Page 7
Note: The Parts List and Assembly Diagram is provided as a reference tool only.
Some parts are listed and shown for illustration purposes only, and are not available
as replacement parts. All repairs to this tool (including replacing parts) should only
be done by a qualied service technician.
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