Lincoln Electric VIKING 1740 Series User manual

GRAPHICS MAY VARY
Operator’s Manual
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IM10571 | Issue Date 07 - 20
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VIKING TM 1740 Series
Auto-Darkening Helmets

TABLE OF CONTENTS Page
SAFETY WARNINGS – READ BEFORE USING 1
HELMET INFORMATION 2
SPECIFICATIONS 3
OPERATING INSTRUCTIONS 4
CARTRIDGE OPERATIONS/FEATURES 5
SHADE GUIDE SETTINGS 6
CARTRIDGE AND LENS REPLACEMENT 7
TROUBLESHOOTING 8
WARRANTY INFORMATION 9
REPLACEMENT PARTS 9

SAFETY WARNINGS – READ BEFORE USING
ARC Rays can injure eyes and burn skin
• Before welding, always inspect helmet and filter lens to be sure they are fitted
properly, in good condition and not damaged.
• Check to see that the clear lens is clean and securely attached to the helmet.
• Always wear safety glasses or goggles under the welding helmet and protective
clothing to protect your skin from radiation, burns and spatter.
• Ensure that optical radiation from other welder’s arcs in the immediate area
does not enter in from behind the helmet and auto-darkening filter.
Note: Auto-darkening filters in Lincoln helmets are designed to protect the user against harmful
ultra-violet and infrared rays both in the dark and light states. No matter what shade the filter is
set to, the UV/IR protection is always present.
FUMES AND GASES can be dangerous to your health.
• Keep your head out of fumes.
• Use enough ventilation or exhaust at the arc or both to keep fumes and gases
from your breathing zone and general area.
• When welding with electrodes which require special ventilation such as
stainless or hard facing (see instructions on container or MSDS) or on
lead or cadmium plated steel and other metals or coatings which
produce highly toxic fumes, keep exposure as low as possible and within
applicable OSHA PEL and ACGIH TLV limits using local exhaust or
mechanical ventilation. In confined spaces or in some circumstances,
outdoors, a respirator may be required. Additional precautions are also
required when welding on galvanized steel.
1
WARNING
Refer to http://www.lincolnelectric.com/safety
for additional safety information.

HELMET INFORMATION
This Auto-Darkening Welding Helmet will automatically change from a light
state (shade DIN3.5) to a dark state (shade DIN9-13) when arc welding
starts.
The filter automatically returns to a light state when the arc stops.
Match your welding application to the shade indicated on the shade chart.
(See Page 6)
• Operating temperature: 14°F ~ 131°F (-10°C ~ 55°C).
• Do not use or open the auto-darkening filter if damaged by shock,
vibration or pressure.
• Keep the sensors and solar cell clean. Clean the filter cartridge using a
soapy water solution and soft cloth which should be damp but not
saturated.
This Auto-Darkening Welding Helmet is designed for use with GMAW, GTAW,
MMAW welding, or Plasma Arc and air carbon arc cutting.
The cartridge provides protection from harmful UV and IR radiation, in both
dark and light states.
The cartridge contains two sensors to detect the light from the welding arc,
resulting in the lens darkening to a selected welding shade.
• Do not use solvents or abrasive cleaning detergent.
• If cover lens is spattered or covered with dirt, it should be replaced
immediately.
• Use only replacement parts specified in this manual.
• Do not use the helmet without inside and outside cover lenses properly
installed.

SPECIFICATIONS
(1) Headgear compliance with ANSI Z87.1 is without sweatband installed.
3
Optical Class
LCD Viewing Area
Cartridge size
UV/IR Protection
Arc Sensors
Light State Shade
Variable Welding Shades
Grind Mode
Shade Control
Power Supply
Low Battery Warning
Battery
Power On/Off
Light to Dark Switching Time
Sensitivity Control
Delay Control (Dark to Light)
TIG Rating
Operating Temperature
Storage Temperature
Total Weight
Compliance(1)
1/1/1/1
96 x 42.5mm (3.78 x 1.67in.)
110 x 90mm (4.33 x 3.54in.)
Up to Shade DIN 16 at all times
2
DIN 3.5
DIN 9 to 13
DIN 4
Dial knob - full adjustment
Solar cells - with replaceable batteries
Red Light
AAA Alkaline (2 required)
Fully automatic
0.00004 sec. (1/25,000 sec.)
Variable
0.1 sec. min. ~ 1.0 sec. max.
5 amps
14°F ~ 131°F (-10°C ~ 55°C)
-4° ~ 158°F (-20°C ~ 70°C)
528g (18.6 Oz)
ANSI Z87.1, CSA Z94.3
Grind Warning Green Light

OPERATING INSTRUCTIONS
Headgear Adjustment
HEAD SIZE ADJUSTMENT: HEADGEAR TIGHTNESS is adjusted by pushing
in the Ratchet Knob and turning to adjust for the desired head size. This knob
is located at the back of the helmet. HEADGEAR CROWN ADJUSTMENT is
made by adjusting for comfort and snapping the pin into the hole to lock se-
curely in place.
TILT: Tilt adjustment is located on right side of helmet. Loosen the right head-
gear tension knob and push the top end of the adjustment lever outward until
the lever’s Stop Tab clears the notches. Then rotate the lever up or down to
the desired tilt position. The Stop will automatically engage again when re-
leased locking the helmet into position.
FORE / AFT ADJUSTMENT: Adjusts the distance between the user’s face
and lens. To adjust, loosen the outside tension knobs and slide forward or back
to desired position and retighten. NOTE: Make sure both sides are equally
positioned for proper operation.
4
wn
stment
Ratchet
Knob
Fore-Aft
Adjustment
Tilt
Adjustment

CARTRIDGE OPERATION/FEATURES
Variable Shade Control
The shade can be adjusted from shade 9 to 13 based upon welding process or application (refer to shade se-
lection chart on page 6). The variable shade control knob is located on the ADF cartridge as shown below.
Sensitivity Knob
Adjust the light sensitivity by turning the SENSITIVITY knob to the left or right as shown in the figure below.
Turning the knob all the way to the right is the HIGH setting. When helmet is used in the presence of excess
ambient light or with another welding machine close by, improved helmet performance can be obtained with a
lower setting by turning the knob to the left to reduce the sensitivity.
Delay Time Knob
This control is designed to protect the welder’s eyes from the strong residual rays after welding. Changing the
Delay Time knob will vary dark to light time between .1 second (minimum) to 1.0 second (maximum). Turning
the Delay Time knob to the left is maximum (1.0 second). This setting is recommended for high amperage ap-
plications where the weld puddle is still very bright after the welding arc has ceased and for situations where the
filter may be temporarily blocked from seeing the welding arc.
Power
This ADF cartridge is powered by replaceable batteries and solar power. Battery installation is required prior to
use. The batteries are located at the top of the ADF cartridge. Replace batteries when LOW BATTERY light is
lit. See the specification chart on page 3 for type of batteries required.
Weld/Grind Switch
Switch to be set to WELD for welding operation. After setting the switch to GRIND, a green LED on the
cartridge should blink every 3 seconds to indicate you are in Grind mode. GRIND setting is intended for grinding
only not for welding.
Test Button
Press and hold test to preview shade selection before welding. When released
the viewing window will automatically return to the light state (3.5 Shade).
5
4/9-13 TM 1/1/1/1
BATTERY
TEST
LOW
TM Z87W4/9-13 CSA Z94.3 /
LINCOLN ELECTRIC
WELD GRIND
*
LH
T
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S
N
S
I
I
V
I
T
Y
SL
L
E
D
A
Y
913
A
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S
D
E
11
10
12
S27978-191
GRIND

ALWAYS TEST TO BE SURE THE ADF CARTRIDGE IS CHARGED BE-
FORE WELDING. The TEST button is for the user to verify the ADF cartridge
is darkening properly. If cartridge is not darkening properly, replace batteries
with fresh batteries and test again before use. While welding, the arc and solar
cell will keep the ADF charged.
SHADE GUIDE SETTINGS
If your helmet does not include any one of the shades referenced above, it is
recommended you use the next darker shade.
6
NT 1
GUIDE FOR SHADE NUMBERS
O DETSEGGUSMUMINIMCRAEZISEDORTCELENOITAREP (1)
1/32 in. (mm) CURRENT (A) PROTECTIVE SHADE NO.
SHADE (COMFORT)
Shielded metal arc Less than3(2.5) Less than 60 7 –
018061-06)4–5.2(5-3gnidlew
5-8 (4–6.4) 160-250 10 12
More than 8 (6.4) 250-550 11 14
–706nahtsseLcralatemsaG
w 1101061-06xulfdnagnidle
2101052-061gnidlewcraderoc
250-500 10 14
01805nahtsseLcranetsgnutsaG
218051-05gnidlew
150-500 10 14
2101005nahtsseL)thgiL(nobracriA
41110001-005)yvaeH(gnittuccrA
8ot6602nahtsseLgnidlewcraamsalP
018001-02
100-400 10 12
400-800 11 14
Plasma arc cutting (Light)(2)
(2)
(2) Less than 300 8 9
219004-003)muideM(
(Heavy) 400-800 10 14
4ro3––gnizarbhcroT
2––gniredloshcroT
41––gnidlewcranobraC
PLATE THICKNESS
mm.ni
Gas welding
5ro42.3rednU8/1rednUthgiL
6ro57.21ot2.32/1ot8/1muideM
8ro67.21revO2/1revOyvaeH
Oxygen cutting
4ro352rednU1rednUthgiL
5ro4051ot526ot1muideM
6ro5051revO6revOyvaeH
(1) As arule of thumb, start with a shade that is too dark, then go to a lighter shade which gives sufcient view of the weld zone without going
below the minimum. In oxyfuel gas welding or cutting where the torch produces a high yellow light, it is desirable to use a lter lens that absorbs
the yellow or sodium line the visible light of the (spectrum) operation
(2) These values apply where the actual arc is clearly seen. Experience has shown that lighter lters may be used when the arc is hidden by the
workpiece.
.
Data from ANSI Z49.1-2005

CARTRIDGE AND LENS REPLACEMENT
Replacing Front Clear Cover Lens: Replace the front cover lens if it is damaged.
Remove ADF holder assembly per Figure 1. Remove front cover lens from helmet
assembly. Carefully remove gasket from cover lens. Install new cover lens into
gasket and assemble to helmet shell. Make sure to assemble cover lens and gas-
ket into helmet shell the same way as it was removed.
Replacing Inside Clear Lens: Replace the inside clear lens if it is damaged.
Remove ADF holder assembly per Figure 1. Remove shade cartridge from ADF
holder. Place your fingernail in recess above cartridge view window and flex lens
upwards until it releases from edges of cartridge view window.
Change the Shade Cartridge: Remove ADF holder assembly from helmet shell.
See figure 1 for removal. Flex top end of the ADF holder to allow for ADF cartridge
to be removed from frame. Install new ADF cartridge into frame per figure 2 below.
Make sure that the ADF cartridge is inserted in ADF holder correctly as shown. In-
stall ADF holder assembly into helmet shell.
INSTALLING AN AFTERMARKET MAGNIFYING LENS:
Simply slide the magnifying lens into the short rail located on the sides of ADF
holder per Figure 3. Shade cartridge must be removed from ADF holder to install
magnifying lens.
Cleaning: Clean the helmet by wiping with a soft cloth. Clean cartridge sur-
faces regularly. Do not use strong cleaning solutions. Clean sensors and solar
cells with soapy water solution and a clean cloth and wipe dry with a lint-free
cloth. Do NOT submerge shade cartridge in water or other solution.
7
Figure
3
Figure 2
Figure 1

TROUBLESHOOTING GUIDE
T est your shade cartridge prior to welding by directing the front of the cartridge
toward a bright source of light. Then, using your fingers, rapidly cover and
uncover the sensors. The cartridge should darken momentarily as the sensor is
exposed. A torch striker can also be used.
8
SOLUTION
Replace Battery
Clean or replace front cover lens.
Clean the Auto-Darkening cartridge
with soapy water solution and soft
cloth.
Adjust sensitivity to required level.
Clean or replace front cover lens.
Check for cracked or pitted front
cover lens and replace as required.
Make sure you are not blocking the
sensors or solar panels with your
arm or other obstacle while welding.
Adjust your position so that the sen-
sors can see the weld arc.
Make sure proper shade is selected.
Adjust sensitivity to required level.
Adjust delay time to required level.
Replace front cover lens as
needed.
POSSIBLE CAUSE
Low Battery
Front cover lens dirty.
Cartridge dirty.
Sensitivity is set too low.
Front cover lens dirty.
Front cover lens is damaged.
Sensors are blocked or
Solar panel is blocked.
Grind Mode Selected
Sensitivity set too high.
Delay time set too high.
Missing, damaged,
broken, cracked or
distorted front cover
lens.
PROBLEM
Filter does not darken when
TEST button is pushed
Difficult to see through filter.
Filter does not darken when
arc is struck.
Filter darkening without arc
being struck.
Filter remains dark after
completing a weld.
ADF is
cracked.
Weld spatter
is damaging
the filter.
WARNING
Cease (STOP) using this product if this prob-
lem exists. UV/IR protection may be compro-
mised resulting in burns to the eyes and skin.

WARRANTY INFORMATION: Reference IMWS1 included in Literature.
SPATTER DAMAGE IS NOT COVERED BY WARRANTY:
Do not use this product without the correct protective clear lenses installed
properly on both sides of the Auto-Darkening Filter cartridge (ADF). The clear
lenses supplied with this helmet are properly sized to work with this product
and substitutions from other suppliers should be avoided.
REPLACEMENT PARTS
*Not illustrated
9
1
2
3
4
6
7
8
ITEM PART NO. DESCRIPTION QTY
1KP3043-1 OUTSIDE CLEAR LENS (PKG. QTY: 5) 1
2KP3284-3 ADF CARTRIDGE 1
3KP3283-1 INSIDE CLEAR LENS (PKG. QTY: 5) 1
4KP4804-1
HEADGEAR ASSEMBLY(INCLUDING SWEATBAND &
BACK PAD)
1
5* KP2930-1 SWEATBAND (PKG. QTY: 2) 1
6* KP4636-1 BACK PAD(PKG. QTY: 2) 1
7KP4803-1 BLACK REPLACEMENT SHELL 1
8 S27978-58 OUTSIDE CLEAR LENS SEAL 1
9 S27978-55 ADF HOLDER 1
10* S27978-197 ADF BATTERY COVER 1

10
PART NO. DESCRIPTION QTY
KP3046-100 CHEATER LENS 1.00 MAGNIFICATION 1
KP3046-125 CHEATER LENS 1.25 MAGNIFICATION 1
KP3046-150 CHEATER LENS 1.50 MAGNIFICATION 1
KP3046-175 CHEATER LENS 1.75 MAGNIFICATION 1
KP3046-200 CHEATER LENS 2.00 MAGNIFICATION 1
KP3046-225 CHEATER LENS 2.25 MAGNIFICATION 1
KP3046-250 CHEATER LENS 2.50 MAGNIFICATION 1
KP3047-1 HALO HARD HAT ADAPTER 1
KP3486-1 SLOTTED HARD HAT ADAPTER 1
OPTIONAL ACCESSORIES

CUSTOMER ASSISTANCE POLICY
The business of The Lincoln Electric Company is manufacturing and
selling high quality welding equipment, consumables, and cutting
equipment. Our challenge is to meet the needs of our customers and to
exceed their expectations. On occasion, purchasers may ask
Lincoln Electric for advice or information about their use of our products.
We respond to our customers based on the best information in our
possession at that time. Lincoln Electric is not in a position to warrant or
guarantee such advice, and assumes no liability, with respect to such
information or advice. We expressly disclaim any warranty of any kind,
including any warranty of fitness for any customer’s particular purpose,
with respect to such information or advice. As a matter of practical
consideration, we also cannot assume any responsibility for updating or
correcting any such information or advice once it has been given, nor
does the provision of information or advice create, expand or alter any
warranty with respect to the sale of our products.
Lincoln Electric is a responsive manufacturer, but the selection and use of
specific products sold by Lincoln Electric is solely within the control of,
and remains the sole responsibility of the customer. Many variables
beyond the control of Lincoln Electric affect the results obtained in
applying these types of fabrication methods and service requirements.
Subject to Change – This information is accurate to the best of our
knowledge at the time of printing. Please refer to
www.lincolnelectric.com for any updated information.