Lincoln Electric Welding System K126 10 User Manual

IM10045-A  
December, 2010  
K126-10, K126-11 and K126-12  
®
Innershield Pro Gun  
Models  
K126-10  
K126-11  
K126-12  
RETURN TO MAIN MENU  
Safety Depends on You  
Lincoln arc welding and cutting  
equipment is designed and built  
with safety in mind. However,  
your overall safety can be  
increased by proper installation  
... and thoughtful operation on  
your part. DO NOT INSTALL,  
OPERATE OR REPAIR THIS  
EQUIPMENT WITHOUT READ-  
ING THIS MANUAL AND THE  
SAFETY PRECAUTIONS CON-  
TAINED THROUGHOUT. And,  
most importantly, think before  
you act and be careful.  
IEC 60974-7  
OPERATOR’SꢀMANUAL  
Copyright © Lincoln Global Inc.  
• World's Leader in Welding and Cutting Products •  
• Sales and Service through Subsidiaries and Distributors Worldwide •  
Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEBꢀSITE: www.lincolnelectric.com  
 
ii  
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SAFETY  
ARC RAYS can burn.  
ELECTRIC SHOCK can  
4.a. Use a shield with the proper filter and cover  
plates to protect your eyes from sparks and  
the rays of the arc when welding or observing  
open arc welding. Headshield and filter lens  
should conform to ANSI Z87. I standards.  
kill.  
3.a. The electrode and work (or ground) circuits  
are electrically “hot” when the welder is on.  
Do not touch these “hot” parts with your bare  
skin or wet clothing. Wear dry, hole-free  
gloves to insulate hands.  
4.b. Use suitable clothing made from durable flame-resistant  
material to protect your skin and that of your helpers from  
the arc rays.  
3.b. Insulate yourself from work and ground using dry insulation.  
Make certain the insulation is large enough to cover your full  
area of physical contact with work and ground.  
4.c. Protect other nearby personnel with suitable, non-flammable  
screening and/or warn them not to watch the arc nor expose  
themselves to the arc rays or to hot spatter or metal.  
In addition to the normal safety precautions, if welding  
must be performed under electrically hazardous  
conditions (in damp locations or while wearing wet  
clothing; on metal structures such as floors, gratings or  
scaffolds; when in cramped positions such as sitting,  
kneeling or lying, if there is a high risk of unavoidable or  
accidental contact with the workpiece or ground) use  
the following equipment:  
FUMES AND GASES  
can be dangerous.  
5.a. Welding may produce fumes and gases  
hazardous to health. Avoid breathing these  
• Semiautomatic DC Constant Voltage (Wire) Welder.  
• DC Manual (Stick) Welder.  
fumes and gases. When welding, keep  
your head out of the fume. Use enough  
ventilation and/or exhaust at the arc to keep  
• AC Welder with Reduced Voltage Control.  
fumes and gases away from the breathing zone. 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 circum-  
stances, outdoors, a respirator may be required.  
Additional precautions are also required when welding  
on galvanized steel.  
3.c. In semiautomatic or automatic wire welding, the electrode,  
electrode reel, welding head, nozzle or semiautomatic  
welding gun are also electrically “hot”.  
3.d. Always be sure the work cable makes a good electrical  
connection with the metal being welded. The connection  
should be as close as possible to the area being welded.  
3.e. Ground the work or metal to be welded to a good electrical  
(earth) ground.  
3.f. Maintain the electrode holder, work clamp, welding cable and  
welding machine in good, safe operating condition. Replace  
damaged insulation.  
5. b. The operation of welding fume control equipment is affected  
by various factors including proper use and positioning of  
the equipment, maintenance of the equipment and the spe-  
cific welding procedure and application involved. Worker  
exposure level should be checked upon installation and  
periodically thereafter to be certain it is within applicable  
OSHA PEL and ACGIH TLV limits.  
3.g. Never dip the electrode in water for cooling.  
3.h. Never simultaneously touch electrically “hot” parts of  
electrode holders connected to two welders because voltage  
between the two can be the total of the open circuit voltage  
of both welders.  
5.c. Do not weld in locations near chlorinated hydrocarbon vapors  
coming from degreasing, cleaning or spraying operations.  
The heat and rays of the arc can react with solvent vapors to  
form phosgene, a highly toxic gas, and other irritating prod-  
ucts.  
3.i. When working above floor level, use a safety belt to protect  
yourself from a fall should you get a shock.  
3.j. Also see Items 6.c. and 8.  
5.d. Shielding gases used for arc welding can displace air and  
cause injury or death. Always use enough ventilation,  
especially in confined areas, to insure breathing air is safe.  
5.e. Read and understand the manufacturer’s instructions for this  
equipment and the consumables to be used, including the  
material safety data sheet (MSDS) and follow your  
employer’s safety practices. MSDS forms are available from  
your welding distributor or from the manufacturer.  
5.f. Also see item 1.b.  
 
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SAFETY  
WELDING and CUTTING  
CYLINDER may explode  
if damaged.  
SPARKS can  
cause fire or explosion.  
7.a. Use only compressed gas cylinders  
containing the correct shielding gas for the  
6.a. Remove fire hazards from the welding area.  
If this is not possible, cover them to prevent  
the welding sparks from starting a fire.  
process used and properly operating  
regulators designed for the gas and  
Remember that welding sparks and hot  
materials from welding can easily go through small cracks  
and openings to adjacent areas. Avoid welding near  
hydraulic lines. Have a fire extinguisher readily available.  
pressure used. All hoses, fittings, etc. should be suitable for  
the application and maintained in good condition.  
7.b. Always keep cylinders in an upright position securely  
chained to an undercarriage or fixed support.  
6.b. Where compressed gases are to be used at the job site,  
special precautions should be used to prevent hazardous  
situations. Refer to “Safety in Welding and Cutting” (ANSI  
Standard Z49.1) and the operating information for the  
equipment being used.  
7.c. Cylinders should be located:  
Away from areas where they may be struck or subjected to  
physical damage.  
•A safe distance from arc welding or cutting operations and  
any other source of heat, sparks, or flame.  
6.c. When not welding, make certain no part of the electrode  
circuit is touching the work or ground. Accidental contact  
can cause overheating and create a fire hazard.  
7.d. Never allow the electrode, electrode holder or any other  
electrically “hot” parts to touch a cylinder.  
6.d. Do not heat, cut or weld tanks, drums or containers until the  
proper steps have been taken to insure that such procedures  
will not cause flammable or toxic vapors from substances  
inside. They can cause an explosion even though they have  
been “cleaned”. For information, purchase “Recommended  
Safe Practices for the Preparation for Welding and Cutting of  
Containers and Piping That Have Held Hazardous  
Substances”, AWS F4.1 from the American Welding Society  
(see address above).  
7.e. Keep your head and face away from the cylinder valve outlet  
when opening the cylinder valve.  
7.f. Valve protection caps should always be in place and hand  
tight except when the cylinder is in use or connected for  
use.  
7.g. Read and follow the instructions on compressed gas  
cylinders, associated equipment, and CGA publication P-l,  
“Precautions for Safe Handling of Compressed Gases in  
Cylinders,” available from the Compressed Gas Association  
1235 Jefferson Davis Highway, Arlington, VA 22202.  
6.e. Vent hollow castings or containers before heating, cutting or  
welding. They may explode.  
6.f. Sparks and spatter are thrown from the welding arc. Wear oil  
free protective garments such as leather gloves, heavy shirt,  
cuffless trousers, high shoes and a cap over your hair. Wear  
ear plugs when welding out of position or in confined places.  
Always wear safety glasses with side shields when in a  
welding area.  
FOR ELECTRICALLY  
powered equipment.  
8.a. Turn off input power using the disconnect  
switch at the fuse box before working on  
the equipment.  
6.g. Connect the work cable to the work as close to the welding  
area as practical. Work cables connected to the building  
framework or other locations away from the welding area  
increase the possibility of the welding current passing  
through lifting chains, crane cables or other alternate cir-  
cuits. This can create fire hazards or overheat lifting chains  
or cables until they fail.  
8.b. Install equipment in accordance with the U.S. National  
Electrical Code, all local codes and the manufacturer’s  
recommendations.  
8.c. Ground the equipment in accordance with the U.S. National  
Electrical Code and the manufacturer’s recommendations.  
6.h. Also see item 1.c.  
6.I. Read and follow NFPA 51B “ Standard for Fire Prevention  
During Welding, Cutting and Other Hot Work”, available  
from NFPA, 1 Batterymarch Park, PO box 9101, Quincy, Ma  
022690-9101.  
6.j. Do not use a welding power source for pipe thawing.  
Refer to http://www.lincolnelectric.com/safety for additional safety information.  
 
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SAFETY  
PRÉCAUTIONS DE SÛRETÉ  
6. Eloigner les matériaux inflammables ou les recouvrir afin de  
prévenir tout risque d’incendie dû aux étincelles.  
Pour votre propre protection lire et observer toutes les instructions  
et les précautions de sûreté specifiques qui parraissent dans ce  
manuel aussi bien que les précautions de sûreté générales suiv-  
antes:  
7. Quand on ne soude pas, poser la pince à une endroit isolé de  
la masse. Un court-circuit accidental peut provoquer un  
échauffement et un risque d’incendie.  
Sûreté Pour Soudage A L’Arc  
8. S’assurer que la masse est connectée le plus prés possible  
de la zone de travail qu’il est pratique de le faire. Si on place  
la masse sur la charpente de la construction ou d’autres  
endroits éloignés de la zone de travail, on augmente le risque  
de voir passer le courant de soudage par les chaines de lev-  
age, câbles de grue, ou autres circuits. Cela peut provoquer  
des risques d’incendie ou d’echauffement des chaines et des  
câbles jusqu’à ce qu’ils se rompent.  
1. Protegez-vous contre la secousse électrique:  
a. Les circuits à l’électrode et à la piéce sont sous tension  
quand la machine à souder est en marche. Eviter toujours  
tout contact entre les parties sous tension et la peau nue  
ou les vétements mouillés. Porter des gants secs et sans  
trous pour isoler les mains.  
b. Faire trés attention de bien s’isoler de la masse quand on  
soude dans des endroits humides, ou sur un plancher  
metallique ou des grilles metalliques, principalement dans  
les positions assis ou couché pour lesquelles une grande  
partie du corps peut être en contact avec la masse.  
c. Maintenir le porte-électrode, la pince de masse, le câble  
de soudage et la machine à souder en bon et sûr état  
defonctionnement.  
9. Assurer une ventilation suffisante dans la zone de soudage.  
Ceci est particuliérement important pour le soudage de tôles  
galvanisées plombées, ou cadmiées ou tout autre métal qui  
produit des fumeés toxiques.  
10. Ne pas souder en présence de vapeurs de chlore provenant  
d’opérations de dégraissage, nettoyage ou pistolage. La  
chaleur ou les rayons de l’arc peuvent réagir avec les vapeurs  
du solvant pour produire du phosgéne (gas fortement toxique)  
ou autres produits irritants.  
d.Ne jamais plonger le porte-électrode dans l’eau pour le  
refroidir.  
e. Ne jamais toucher simultanément les parties sous tension  
des porte-électrodes connectés à deux machines à souder  
parce que la tension entre les deux pinces peut être le  
total de la tension à vide des deux machines.  
11. Pour obtenir de plus amples renseignements sur la sûreté,  
voir le code “Code for safety in welding and cutting” CSA  
Standard W 117.2-1974.  
f. Si on utilise la machine à souder comme une source de  
courant pour soudage semi-automatique, ces precautions  
pour le porte-électrode s’applicuent aussi au pistolet de  
soudage.  
2. Dans le cas de travail au dessus du niveau du sol, se protéger  
contre les chutes dans le cas ou on recoit un choc. Ne jamais  
enrouler le câble-électrode autour de n’importe quelle partie  
du corps.  
PRÉCAUTIONS DE SÛRETÉ POUR  
LES MACHINES À SOUDER À  
TRANSFORMATEUR ET À  
REDRESSEUR  
3. Un coup d’arc peut être plus sévère qu’un coup de soliel,  
donc:  
a. Utiliser un bon masque avec un verre filtrant approprié  
ainsi qu’un verre blanc afin de se protéger les yeux du ray-  
onnement de l’arc et des projections quand on soude ou  
quand on regarde l’arc.  
1. Relier à la terre le chassis du poste conformement au code de  
l’électricité et aux recommendations du fabricant. Le dispositif  
de montage ou la piece à souder doit être branché à une  
bonne mise à la terre.  
b. Porter des vêtements convenables afin de protéger la  
peau de soudeur et des aides contre le rayonnement de  
l‘arc.  
2. Autant que possible, I’installation et l’entretien du poste seront  
effectués par un électricien qualifié.  
c. Protéger l’autre personnel travaillant à proximité au  
soudage à l’aide d’écrans appropriés et non-inflammables.  
3. Avant de faires des travaux à l’interieur de poste, la debranch-  
er à l’interrupteur à la boite de fusibles.  
4. Des gouttes de laitier en fusion sont émises de l’arc de  
soudage. Se protéger avec des vêtements de protection libres  
de l’huile, tels que les gants en cuir, chemise épaisse, pan-  
talons sans revers, et chaussures montantes.  
4. Garder tous les couvercles et dispositifs de sûreté à leur  
place.  
5. Toujours porter des lunettes de sécurité dans la zone de  
soudage. Utiliser des lunettes avec écrans lateraux dans les  
zones où l’on pique le laitier.  
 
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for selecting a QUALITY product by Lincoln Electric. We want you  
to take pride in operating this Lincoln Electric Company product  
••• as much pride as we have in bringing this product to you!  
Thank You  
CUSTOMER ASSISTANCE POLICY  
The business of The Lincoln Electric Company is manufacturing and selling high quality welding equipment, consumables, and cutting equip-  
ment. 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 posses-  
sion at that time. Lincoln Electric is not in a position to warrant or guarantee such advice, and assumes no liability, with respect to such infor-  
mation 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.  
for any updated information.  
Please Examine Carton and Equipment For Damage Immediately  
When this equipment is shipped, title passes to the purchaser upon receipt by the carrier. Consequently, Claims  
for material damaged in shipment must be made by the purchaser against the transportation company at the  
time the shipment is received.  
Please record your equipment identification information below for future reference. This information can be  
found on your equipment nameplate or product carton label.  
Model Name and Sales Spec Number (K-xxx) _____________________________________  
Date of Purchase __________________________________  
Whenever you request replacement parts for or information on this equipment always supply the information  
you have recorded above.  
On-Line Product Registration  
- Register your machine with Lincoln Electric either via fax or over the Internet.  
• For faxing: Complete the form on the back of the warranty statement included in the literature packet  
accompanying this machine and fax the form per the instructions printed on it.  
• For On-Line Registration: Go to our WEbꢀSITE at www.lincolnelectric.com. Choose “Quick Links” and then  
“Product Registration”. Please complete the form and submit your registration.  
Read this Operators Manual completely before attempting to use this equipment. Save this manual and keep it  
handy for quick reference. Pay particular attention to the safety instructions we have provided for your protection.  
The level of seriousness to be applied to each is explained below:  
WARNING  
This statement appears where the information must be followed exactly to avoid serious personal injury or loss of life.  
CAUTION  
This statement appears where the information must be followed to avoid minor personal injury or damage to this equipment.  
 
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Page  
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section A  
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1  
Wire Feeder Connector Kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2  
General DescriptIon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3  
Recommended Processes and Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-3  
Connection to Feeder with Ready to Weld Gun. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-4  
Conversion of K126-10, K126-11 or K126-12 to weld with other Wire Feeders. . . . . A-4 thru A-7  
__________________________________________________________________________________________  
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section b  
Electrodes and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1  
Making a Weld . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1  
Avoiding Wire Feeding Problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . B-1  
__________________________________________________________________________________________  
Accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section C  
Wire Feeder Connection Kits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-1  
Gun Consumable Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C-2  
__________________________________________________________________________________________  
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section D  
Removal, Installation and Trimming Instructions for All Magnum® Liners . . . . . . . . . . . . D-1  
Gun Tubes and Nozzles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1  
Cable Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D-1  
__________________________________________________________________________________________  
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section E  
__________________________________________________________________________________________  
Parts Lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P-103-AA  
__________________________________________________________________________________________  
 
A-1  
A-1  
INSTALLATION  
®
SPECIFICATIONS:  
K126-10, -11, -12 INNERSHIELD PRO  
K126 Innershield Pro Rated Output  
Duty Cycle  
Amperes  
40%  
60%  
80%  
100%  
435  
350  
295  
260  
Welding Processes  
Process  
Electrode Diameter Range  
Wire Feed Speed Range  
Output Range (Amperes)  
FCAW-SS  
.035” – 3/32"  
(0.8 – 2.4 mm)  
(See wire feeder  
Instruction Manual)  
260A @ 100% duty cycle  
350A @ 60% duty cycle  
Physical Dimensions  
Cable Length  
Model  
Weight  
K126-10  
K126-11  
K126-12  
10ft (3.0m)  
15ft (4.5m)  
7.3 lbs (3.3 kg)  
11 lbs (5 kg)  
Temperature Ranges  
Operating Temperature  
Storage Temperature  
-4°F to 104°F (-20C to 40C)  
-40°F to 185°F (-40C to 85C)  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
A-2  
A-2  
INSTALLATION  
TAbLE A.1  
Wire Feeder Connector Kits (up to 5/64” diameter wire)  
Product  
Number  
Feeder Type  
Power  
Connector  
Trigger Lead  
Connector  
Gas Tube and  
Fitting  
Connector Tools  
K466-1  
Lincoln  
X
X
X
X
Except LN-8 or LN-9  
using 1/16 and larger  
electrodes  
Tweco Adapted and  
any -10 series feeder  
K466-2  
K466-3  
K466-4  
K466-5  
X
X
X
X
---  
X
---  
---  
X
X
X
X
X
Miller  
X
Hobart 27  
X
---  
L-Tec  
Adapted  
K466-6  
K466-7  
Wirematic  
X
X
X
X
---  
---  
X
X
Hobart  
Series 2000  
K466-8  
Lincoln LN-8 or LN-9  
Using 1/16 and larger  
electrode  
X
X
X
X
X
X
X
X
---  
---  
X
X
K466-9  
SP100T and Related  
Units  
K466-10  
Lincoln DH-10  
Note: These kits must be used with the KP44-xx series cable liners.  
TAbLE A.2  
Wire Feeder Connector Kits (3/32” diameter wire)  
Trigger Lead  
Connector  
Gas Tube and  
Fitting  
Product  
Number  
Feeder Type  
Tweco #5 Adapted  
Miller  
Power  
Connector  
Connector Tools  
---  
X
---  
---  
X
K613-2  
K613-3  
K613-6  
X
X
X
X
X
X
X
Lincoln LN-8 or LN-9  
Using 1/16 and larger  
electrode  
X
10 series feeder  
with K1500-3 adapter  
K613-8  
X
X
---  
Note: These kits must be used with the KP45-xx series cable liners.  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
A-3  
A-3  
INSTALLATION  
GENERAL DESCRIPTION  
WARNING  
The K126 Innershield Pro has stainless steel jacketed  
goosenecks for extended life. The goosenecks are  
similar in structure to a MIG gun gooseneck. A cop-  
per tube is used for the conductor and a stainless  
steel tube is used for the outer jacketing, while a  
Teflon tube acts as an insulator between the copper  
and steel. The replaceable spring liner extends  
through the gooseneck, so that the wire is continuous-  
ly supported throughout the gun.  
• Do not touch electrically live parts  
such as output terminals or internal  
wiring  
------------------------------------------------------------------------  
The K126 Innershield Pro gun and cable assemblies  
have been designed specification for welding with mild  
steel FCAW-S (self-shielded flux cored) processes.  
The K126 Pro product is designed for extended life  
and improved wire feeding in heavy duty welding  
applications.  
The K126 Innershield Pro gun utilizes a replaceable  
connector assembly at the feeder end of the gun so  
that the gun can be easily used with any feeder.  
These connectors are the same K466/K613 kits used  
with the Magnum MIG gun product line.  
The K126 Innershield Pro products use a cable with a  
core made from flat wound spring steel. The copper  
conductors which transmit welding current are  
wrapped around the spring core. Four #20 insulated  
leads are wrapped along with the copper conductors  
for use in the gun trigger circuit. The cable jacketing  
is made from a cross linked polymer which provides  
exceptional heat resistance and fatigue life.  
RECOMMENDED PROCESSES AND  
EQUIPMENT  
RECOMMENDED PROCESSES  
• FCAW-SS  
PROCESS LIMITATIONS  
• This gun can only be used with self-shielded wires.  
The design will not support the use of shielding gas.  
A round wound spring steel liner is then placed inside  
the spring core of the cable to contain the wire while it  
is being transported to the welding arc. This liner is  
replaceable so that it can be sized correctly for the  
welding wire being used, and it can be removed and  
replaced with a new liner as it wears out. Both of  
these features improve the feeding of the wire through  
the gun.  
EQUIPMENT LIMITATIONS  
• The K126 Pro will not operate with the LN23P feed-  
er.  
• The K126 Pro does not support the 83% reduced  
feed speed switch for pipe welding.  
K126 INNERSHIELD PRO  
350 AMPERES @ 60% DUTY CYCLE  
Description  
Gun  
Cable  
Length (m)  
Feeder End  
Connector  
Assembly  
Product  
Number  
Wire Size  
in. (mm)  
Contact Tips  
Tip Holder  
Insulator  
Cable Liner  
Gun Tube  
10 ft  
(3.0)  
.072 (1.9)  
3/32 (2.4)  
KP2745-072R  
KP2745-332R  
K126-10  
K126-11  
K126-12  
KP2908-1  
KP2908-1  
KP2908-1  
KP2907-1  
KP2907-1  
KP2907-1  
KP45H-322-15 KP2906-62  
KP45H-322-15 KP2906-62  
K613-3  
K613-3  
K466-1  
15 ft  
(4.5)  
.072 (1.9)  
3/32 (2.4)  
KP2745-072R  
KP2745-332R  
15 ft  
(4.5)  
.072 (1.9)  
5/64 (2.0)  
KP2745-072R  
KP2745-564R  
KP44-564-15  
KP2906-62  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
A-4  
A-4  
INSTALLATION  
Read this entire installation section before you  
start installation.  
Connection to Adapted Feeders, Lincoln DH-10,  
LN-10, STT-10, and Power Feed 10 wire feeders  
(5/64” or smaller diameter wire).  
SAFETY PRECAUTIONS  
The K126-12 gun and cable assembly will connect  
easily to any properly adapted feeder.  
WARNING  
ELECTRIC SHOCK can kill.  
1. Check that the adapter and feeder outgoing  
guide, as well as the drive roll, are appropriate  
for the electrode size being used. On Lincoln  
feeders, check that the K1500-2 gun adapter is  
in place.  
• Do not touch electrically live parts  
such as output terminals or inter-  
nal wiring.  
• Insulate yourself from the work and  
ground.  
2. Fully push the brass connector end of the gun  
cable into the brass adapter on the outgoing side  
of the feeder wire drive. Secure the cable using  
the hand screw or set screw in the adapter.  
• Always wear dry insulating gloves.  
------------------------------------------------------------------------  
CONNECTION TO FEEDER WITH READY  
TO WELD GUN  
3. Insert the round connector of the control cable  
into the mating connector on the front of the wire  
feeder.  
Connecting a K126-10 or K126-11 to a Lincoln  
Feeder (5/64” or smaller diameter wire)  
The K126-10 or K126-11 will connect to any wire  
feeder with a Lincoln style gun receiver bushing (i.e.  
LN-8, LN-9, LN-25 or any feeder with a K1500-1  
bushing installed). (See Figure A.1)  
CONVERSION OF K126-10, K126-11 OR  
K126-12 TO WELD WITH OTHER WIRE  
FEEDERS  
Prepare gun and determine correct connector kit  
1. Check that the drive roll(s) and feeder guide  
tubes are appropriate for the electrode size  
being used.  
1. Determine which K466 or K613 kit is required for  
your system using (Tables A.1 and A.2) in the  
front part of the Installation Section.  
2. Fully push the brass connector end of the gun  
cable into the conductor block on the outgoing  
side of the feeder wire drive. Secure the cable  
using the hand screw or set screw in the con-  
ductor block.  
2. Remove the insulator, tip holder and gun control  
cable.  
3. Lay gun and cable out straight on a flat surface.  
3. Insert the round connector of the control cable  
into the mating connector on the front of the  
wire feeder.  
4. Loosen set screw located in the brass cable con-  
nector at the wire feeder end of the cable using  
the 5/64 (2.0 mm) Allen wrench. Pull liner out of  
cable.  
FIGURE A.1  
5. Remove the brass cable connector from the  
feeder end of the gun using the wrench provided.  
6. Install the new connector kit using the appropri-  
ate procedure which follows.  
K466-3/K613-3 Installation (For Miller feeders)  
1. Remove brass cable connector (see Figure A.2)  
from the kit and screw it on to the feeder end of  
the gun cable. Tighten the connection with the  
wrench provided.  
2. Attach the round connector of the gun control  
cable provided to the trigger connector on the  
front of the Miller feeder.  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
A-5  
A-5  
INSTALLATION  
K466-4 Installation (For Hobart feeders; i.e. 27...)  
K466-6, K466-7, and K466-9 Installation  
(Wirematic, Hobart Series 2000 Feeders, SP100T  
Type and Power MIG)  
1. Remove brass cable connector (see Figure A.2)  
from the K466-4 kit and screw it on to the feeder  
end of the gun cable. Tighten the connector  
with the wrench provided.  
1. Remove brass cable connector (see Figure A.2)  
from the connector kit and screw it onto the feeder  
end of the gun cable. Tighten the connection with  
the wrench provided.  
2. Attach the phone plug connector of the gun con-  
trol cable provided to the trigger connector on  
the front of the Hobart feeder.  
2. Attach the gun control cable provided to the trigger  
connector on the wire feeder.  
K466-5 Installation (For L-Tec feeders equipped  
with an L-Tec feeder connector assembly, MIG  
35, MIG 31A, 225...)  
K613-2, K613-7 Installation (Tweco #5 compatible  
feeders)  
1. Remove brass cable connector (see Figure A.2)  
from the K466-5 kit and screw it onto the feeder  
end of the gun cable. Tighten the connection  
with the wrench provided.  
1. Remove brass cable connector from the kit and  
screw it onto the feeder end of the gun cable.  
Tighten the connection with the wrench provid-  
ed.  
2. For L-Tec machines that require trigger lead  
connections to be made at a terminal strip locat-  
ed within the machine (L-Tec 225), a gun con-  
trol cable with forked terminals is provided.  
Connect the terminated leads to the terminal  
strip. For a machine that requires a twist-lock  
gun control cable connection, continue to use  
the L-Tec gun control cable provided with the L-  
Tec wire feeder connector assembly. Connect  
the twist-lock plug to the proper receptacle on  
the machine.  
2. For K613-7, attach the round connector of the  
gun control cable provided to the trigger con-  
nector on the front of the Lincoln feeder.  
K613-6 Installation (Lincoln Feeders, 3/32” diam-  
eter wire)  
1. Remove brass cable connector and insulation  
tube from the kit. Slide the insulation tube onto  
the connector from the threaded end and screw  
it onto the feeder end of the gun cable. Tighten  
the connection with the wrench provided.  
FIGURE A.2  
INSULATION TUBE  
(K466-1 ONLY)  
GUN HANDLE  
SHIELD CLAMPING SCREWS  
BRASS CABLE  
CONNECTOR  
FEEDER END  
CABLE HANDLE  
GUN TUBE  
MOLDED GAS  
PLUG  
CABLE  
SET SCREW  
TIP  
TIP HOLDER  
LINER ASSEMBLY (LINER BUSHING TO BE SEATED  
TIGHT AGAINST BRASS CABLE CONNECTOR  
INSULATOR  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
A-6  
A-6  
INSTALLATION  
2. Attach the round connector of the gun control  
cable provided to the trigger connector on the  
front of the Lincoln Feeder.  
CONNECT GUNS TO WIRE FEEDER  
Connection to Miller Feeders  
Install and Trim the Cable Liner  
Installation of (KP44 and KP45 series liners)  
Using the Gun and cable assemblies which were  
assembled with a K466-3 or K613-3 connection kit in  
the beginning of this Installation Section will connect  
easily to a variety of popular Miller wire feeders.  
1. Lay the gun and cable out straight on a flat sur-  
face.  
1. Check that the gun liner, connector cap liner,  
and drive rolls are appropriate for the electrode  
size being used.  
2. Make sure that the set screw in the connector  
end is backed out so as not to damage liner or  
liner bushing. Remove and save the tip holder,  
contact tip and insulator from the end of the gun  
tube assembly.  
2. Fully push the brass connector end of the gun  
and cable into the connector receptacle on the  
outgoing side of the feeder wire drive. Tighten  
the hand screw to clamp down on the connec-  
tor.  
3. Insert a new untrimmed liner into the connector  
end of the cable. Be sure the liner bushing is  
stenciled appropriately for the wire size being  
used.  
3. Insert the control cable plug from the feeder trig-  
ger circuit into the mating socket on the gun  
cable feeder end handle.  
4. Be sure to fully seat the liner bushing in the con-  
nector and:  
For all connector kits except K466-3, K466-4 and  
K613-3, tighten the set screw in the cable connector.  
<OR>  
Connection to Hobart Feeders  
Using the Gun and cable assemblies which were  
assembled with a K466-4 connection kit in the begin-  
ning of this Installation Section will connect easily to a  
variety of Hobart wire feeders.  
For K466-3, K466-4 and K613-3, screw in the con-  
nector cap provided in the kit until it seats on the  
face of the bushing. Then insert the appropriate  
piece of liner material into the connector cap and  
tighten the set screw. Three pieces of liner material  
are included in these connector kits to help guide the  
electrode through the connector cap. The piece with  
the smallest inner diameter is designed for .045" (1.2  
mm) maximum diameter electrode and the other lin-  
ers fit the following wires (maximum size) in order of  
increasing inside diameter: 1/16” (1.6 mm), 5/64”  
(2.0 mm), 3/32” (2.4 mm) and 1/8” (3.2 mm).  
1. Check that the gun liner, connector cap liner,  
and drive rolls are appropriate for the electrode  
size being used.  
2. Fully push the brass connector end of the gun  
and cable into the connector receptacle on the  
outgoing side of the feeder wire drive. Tighten  
the hand screw to clamp down on the connec-  
tor.  
NOTE: The maximum wire size for a K466-3 and  
K466-4 is 5/64”. Therefore the 3/32” and  
1/8” liners are not included with these  
kits.  
3. Insert the control cable plug from the feeder trig-  
ger circuit into the mating socket on the gun  
cable feeder end handle.  
5. Be sure the cable is straight and then trim the  
liner flush with the end of the gun tube.  
Connection to L-Tec Adapted Feeders  
Using the Gun and cable assemblies which were  
assembled with a K466-5 connection kit in the begin-  
ning of this Installation Section will connect easily to  
an L-Tec feeder equipped with an L-Tec feeder con-  
nector assembly.  
6. Remove the gun tube and trim an additional  
9/16” (12.7 mm) of material from the end of the  
liner (a 9/16” gage is included on the wrench  
supplied with the gun).  
7. Replace the gun tube and tighten the clamping  
screw to secure it.  
1. Check that the adapter and feeder outgoing  
guide as well as the drive roll, are appropriate  
for the electrode size being used.  
8. Reassemble the tip holder, insulator, and con-  
tact tip onto the end of the gun tube.  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
A-7  
A-7  
INSTALLATION  
Connection to a Lincoln feeder for 3/32” diameter  
wire  
2. Fully push the brass connector end of the gun  
cable into the brass adapter on the outgoing  
side of the feeder wire drive. Secure the cable  
using the hand screw, set screw, or pin.  
1. Check that the drive roll(s) and feeder guide  
tubes are appropriate for the electrode size  
being used.  
3. Insert the control cable plug from the feeder trig-  
ger circuit into the mating socket on the gun  
cable feeder end handle. For machines with a  
twist-lock trigger lead receptacle, if the L-Tec  
gun control cable does not easily connect with  
the socket, the gun control cable that came with  
the K466-5 kit can be used. To do this, cut off  
the gun control leads as close to the forked ter-  
minals as possible and skin back the leads  
7/16" (11 mm). Remove the twist-lock plug from  
the L-Tec control cable and connect it to the  
K466-5 cable. Make sure the outer jacket of the  
connector is caught within the plug's strain  
relief.  
2. Fully push the brass connector end of the gun  
cable into the conductor block on the outgoing  
side of the feeder wire drive. Secure the cable  
using the hand screw or set screw in the con-  
ductor block.  
3. Insert the round connector of the control cable  
into the mating connector on the front of the  
wire feeder.  
Connection to Lincoln Wirematic, Power MIG,  
Hobart Series 2000 Feeders, or SP100T Type  
Feeders.  
Gun cable assemblies which were assembled with a  
K466-6, K466-7 or K466-9 Connection Kit in the  
beginning of this Installation Section will connect eas-  
ily to a feeder.  
1. Check that the adapter and feeder outgoing  
guide, as well as the drive rolls, are appropriate  
for the electrode size being used.  
2. Fully push the brass connector end of the gun  
cable into the outgoing side of the feeder wire  
drive. Secure the cable using the hand screw  
on the wire feeder.  
3. Insert the control cable plug from the feeder trig-  
ger circuit into the mating socket on the gun  
cable feeder end handle.  
Connection to a Tweco #5 adapted feeder.  
1. Check that the drive roll(s) and feeder guide  
tubes are appropriate for the electrode size  
being used.  
2. Fully push the brass connector end of the gun  
cable into the conductor block on the outgoing  
side of the feeder wire drive. Secure the cable  
using the hand screw or set screw in the con-  
ductor block.  
3. Insert the round connector of the control cable  
into the mating connector on the front of the  
wire feeder.  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
b-1  
b-1  
OPERATION  
1. Check that the welding power source is on.  
ELECTRODES AND EQUIPMENT  
2. Position electrode over joint. End of the electrode  
should be slightly off the work.  
The K126 Innershield Pro gun has been designed for  
use with Lincoln Innershield brand self-shielded cored  
wire electrodes. Refer to the appropriate Lincoln  
Process and Procedure Guidelines for the electrode  
used for information on recommended electrical and  
visible stick outs.  
3. Lower welding helmet, close gun trigger, and begin  
welding. Hold the gun so the contact tip to work  
distance gives the correct electrical stick out as  
required for the procedure being used.  
4. To stop welding, release the gun trigger and then  
pull the gun away from the work after the arc goes  
out.  
MAKING A WELD  
WARNING  
When using an open arc process, it is necessary  
AVOIDING WIRE FEEDING  
PRObLEMS  
to use eye, head, and body protection.  
ELECTRIC SHOCK can kill.  
Wire feeding problems can be avoided by observing the  
following gun handling procedures:  
• Do not touch electrically live parts  
such as output terminals or inter-  
nal wiring.  
1. Do not kink or pull cable around sharp corners.  
2. Keep the electrode cable as straight as possible  
when welding or loading electrode through cable.  
• Insulate yourself from the work and  
ground.  
3. Avoid wrapping excess cable around handle or  
front of wire feeder.  
• Always wear dry insulating gloves.  
------------------------------------------------------------------------  
4. Do not allow dolly wheels or trucks to run over  
cables.  
FUMES AND GASES can be danger-  
ous.  
5. Keep cable clean by following maintenance instruc-  
tions.  
6. Use only clean, rust-free electrode. The Lincoln  
electrodes have proper surface lubrication.  
• Keep your head out of fumes.  
• Use ventilation or exhaust to  
remove fumes from breathing zone.  
------------------------------------------------------------------------  
7. Replace contact tip when the arc starts to become  
unstable or the contact tip end is fused or  
deformed.  
WELDING SPARKS can cause fire or  
explosion.  
• Keep flammable material away.  
------------------------------------------------------------------------  
ARCꢀRAYS can burn.  
• Wear eye, ear and body protection.  
------------------------------------------------------------------------  
Only qualified personnel should operate this  
equipment.  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
C-1  
C-1  
ACCESSORIES  
WIRE FEEDER CONNECTION KITS  
Wire Feeder Data  
Kit No. for Gun  
3/32” diameter  
wire  
Manufacturer  
Model  
5/64” diameter  
or smaller wire  
none  
K613-6  
none  
none  
none  
LN-7, LN-8, & LN-9 series; LN-25 (0.052 max.); LN-742  
LN-7, LN-8, & LN-9 series; LN-25 (1/16 and larger); LN-742  
LF-72, LN-74  
K466-1  
K466-8  
K466-10  
K466-10  
K466-6  
Lincoln Electric  
Series 10 feeders; LN-15; PF-10M; PF-15M  
Power MIG & Wirematic series feeders  
none  
K613-2  
No. 2, 3, and 4 guns  
No. 5 guns  
K466-2  
K613-2  
Tweco Adapted  
Miller  
Intellimatic, Side Kick, D-51A, Porta-MIG, Millermatic 130,  
300 & 35 S-42GL, S-52A & S-54A  
K466-3  
K613-3  
Swing Arc –Dual & Single, S-22, S-32S, 52D, 54D, 54E,  
60 & 70 series  
Dualmatic 27/70, H3S, H4S, H6S  
Mega-Conds 27, 44, 45, 70, 70S  
2000 series; 17 Hefty  
K466-4  
K466-7  
K613-4  
K613-5  
Hobart  
ESAB  
Digamig, EH1, 5 & 11, SEH-4 & 5, SWM11 & 11B, 12, 13,  
23, 24, 25, 26, 35, VAM2  
none  
K466-5  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
C-2  
C-2  
ACCESSORIES  
GUN CONSUMAbLE PARTS  
LINER ASSEMbLY  
Wire Diameter  
Liner KP No.  
0.035  
0.045  
0.052  
1/16  
0.068  
0.072  
5/64  
KP44-3545-15  
KP44-3545-15  
KP44-116-15  
KP44-116-15  
KP44-564-15  
KP44-564-15  
KP44-564-15  
KP45H-332-15*  
3/32*  
*K613-X Gun Connector Kit is Required for 3/32” wire.  
CONTACT TIPS  
KP Numbers  
Wire Diameter 10-piece pack  
100-piece pack  
0.035  
0.045  
0.052  
1/16  
0.068  
0.072  
5/64  
KP2745-035R KP2745-035R-B100  
KP2745-045R KP2745-045R-B100  
KP2745-052R KP2745-052R-B100  
KP2745-116R KP2745-116R-B100  
KP2745-072R KP2745-072R-B100  
KP2745-072R KP2745-072R-B100  
KP2745-564R KP2745-564R-B100  
KP2745-332R KP2745-332R-B100  
3/32*  
GUN TUbES  
Stainless Steel Jacketed  
KP Number  
bend Angle  
Notes  
KP2906-62  
KP2906-62R  
KP2906-30R  
KP2906-30R-L  
KP2906-30  
62°  
62°  
30°  
30°  
30°  
30°  
No reverse bend  
With reverse bend  
With reverse bend  
With reverse bend, extended length  
No reverse bend  
No reverse bend, extended length  
KP2906-30-L  
Classic Varnished Jacketing  
KP Number  
bend Angle  
Notes  
KP2927-62R  
KP2927-30R-L  
62°  
30°  
No reverse bend  
With reverse bend  
INSULATED GUIDES/THREAD PROTECTOR  
KP Number  
Desired ESO  
KP2907-1  
KP1987-1  
KP1995-1  
KP2090-1  
1.5" or less  
1.50" to 2.00"  
2.00" to 2.75"  
2.75" or greater  
TIP HOLDERS  
KP Number  
Notes  
KP2908-1 Magnum Pro Tip Holder  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
D-1  
D-1  
MAINTENANCE  
NOTE: The maximum wire size for a K466-3 and K466-4  
is 5/64”. Therefore the 3/32” and 1/8” liners are not  
included with these kits.  
REMOVAL, INSTALLATION AND TRIMMING  
INSTRUCTIONS FOR ꢀMAGNUM® LINERS  
NOTE: The variation in cable lengths prevents the inter-  
changeability of liners. Once a liner has been cut for a par-  
ticular gun, it should not be installed in another gun, unless  
it can meet the liner cut off length requirement. Liners are  
shipped with the jacket of the liner extended the proper  
amount.  
CAUTION  
This screw should only be gently tightened.  
Overtightening will split or collapse the liner and cause  
poor wire feeding.  
-------------------------------------------------------------------------------  
5. Be sure the cable is straight and then trim the liner  
flush with the end of the gun tube.  
1. Remove the insulator and tip holder.  
2. Lay the gun and cable straight on a flat surface.  
6. Remove the gun tube and trim an additional 9/16”  
(12.7 mm) of material from the end of the liner (a 9/16”  
gage is included on the wrench supplied with the gun).  
7. Replace the gun tube and tighten the clamping screw  
to secure it.  
For all connectors except K466-3, K466-4 and K613-3:  
Loosen set screw located in the brass cable connector at  
the wire feeder end of the cable using the same 5/64 (2.0  
mm) Allen wrench. Pull liner out of cable.  
<OR>  
8. Reassemble the tip holder, insulator, and contact tip  
onto the end of the gun tube.  
For K466-3, K466-4 and K613-3 connectors:  
GUN TUbES AND NOzzLES  
Remove the connector cap with the wrench provided.  
Pull liner out of cable. If the liner is going to be replaced  
with a different size liner, loosen set screw on the con-  
nector cap and remove piece of liner material.  
1. Replace worn contact tips as required.  
2. Remove spatter from from contact tip, tip holder, insu-  
lator and gun tube after each 10 minutes of arc time or  
as required.  
3. To remove gun tube from gun, loosen socket-head  
clamping screw in handle with 3/16" (4.8 mm) Allen  
wrench.  
4. Pull gun tube out from gun handle. To reinstall, insert  
the gun tube, push in as far as possible, and retighten  
clamping screw.  
3. Insert a new untrimmed liner into the connector end of  
the cable. Be sure the liner bushing is stenciled  
appropriately for the wire size being used.  
4. Be sure to fully seat the liner bushing in the connector  
and:  
For all connector kits except K466-3, K466-4 and K613-  
3, tighten the set screw in the cable connector.  
<OR>  
CAbLE CLEANING  
For K466-3, K466-4 and K613-3, screw in the connector  
cap provided in the kit until it seats on the face of the  
bushing. Then insert the appropriate piece of liner mate-  
rial into the connector cap and tighten the set screw.  
Three pieces of liner material are included in these con-  
nector kits to help guide the electrode through the con-  
nector cap. The piece with the smallest inner diameter is  
designed for .045" (1.2 mm) maximum diameter elec-  
trode and the other liners fit the following wires (maxi-  
mum size) in order of increasing inside diameter: 1/16”  
(1.6 mm), 5/64” (2.0 mm), 3/32” (2.4 mm) and 1/8” (3.2  
mm).  
Clean cable liner after using approximately 150 (68 kg)  
pounds of electrode. Remove the cable from the wire feed-  
er and lay it out straight on the floor. Remove the contact tip  
from the gun. Using an air hose and only partial pressure,  
gently blow out the cable liner from the tip holder end.  
CAUTION  
• Excessive pressure at the start may cause the dirt to  
form a plug.  
-------------------------------------------------------------------------------  
Flex the cable over its entire length and again blow out the  
cable. Repeat this procedure until no further dirt comes out.  
Figure D.1  
FEEDER END  
CABLE HANDLE  
GUN HANDLE  
BRASS CABLE  
CONNECTOR  
LINER TRIM  
LENGTH  
Liner  
9/16" (14.3 mm)  
CABLE  
SET SCREW  
TIP HOLDER  
LINER ASSEMBLY (LINER BUSHING TO BE SEATED  
TIGHT AGAINST BRASS CABLE CONNECTOR  
TIP  
INSULATOR  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
E-1  
E-1  
TROUbLESHOOTING  
HOW TO USE TROUbLESHOOTING GUIDE  
WARNING  
Service and Repair should only be performed by Lincoln Electric Factory Trained Personnel.  
Unauthorized repairs performed on this equipment may result in danger to the technician and  
machine operator and will invalidate your factory warranty. For your safety and to avoid  
Electrical Shock, please observe all safety notes and precautions detailed throughout this  
manual.  
__________________________________________________________________________  
This Troubleshooting Guide is provided to  
help you locate and repair possible machine  
malfunctions. Simply follow the three-step  
procedure listed below.  
Step 3. RECOMMENDED COURSE OF  
ACTION  
This column provides a course of action for  
the Possible Cause, generally it states to  
contact you local Lincoln Authorized Field  
Service Facility.  
Step 1. LOCATE PROBLEMꢀ(SYMPTOM).  
Look under the column labeled “PROBLEM  
(SYMPTOMS)”. This column describes  
possible symptoms that the machine may  
exhibit. Find the listing that best describes  
the symptom that the machine is exhibiting.  
If you do not understand or are unable to  
perform the Recommended Course of  
Action safely, contact you local Lincoln  
Authorized Field Service Facility.  
Step 2. POSSIBLE CAUSE.  
The second column labeled “POSSIBLE  
CAUSE” lists the obvious external possibili-  
ties that may contribute to the machine  
symptom.  
CAUTION  
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your  
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
E-2  
E-2  
TROUbLESHOOTING  
Observe all Safety Guidelines detailed throughout this manual  
PRObLEMS  
(SYMPTOMS)  
POSSIbLE  
CAUSE  
RECOMMENDED  
COURSE OF ACTION  
No wire feed occurs when trigger is 1. Machine is switched off or  
unplugged.  
1. Switch on or plug in machine.  
pulled.  
2. Out of wire  
2. Install full spool of specified wire.  
3. Replace contact tip.  
3. Contact tip burnback.  
4. Fully or partially blocked gun  
liner.  
4. Remove and clean or replace gun  
liner .  
5. Bird nest  
5. Cut out bird nest, reload wire, and  
check for proper wire alignment.  
6. Defective trigger (contacts open  
or dirty).  
6. Replace trigger assembly.  
7. Defective trigger circuit in gun.  
7. Disconnect gun from machine  
and check trigger circuit for conti-  
nuity.  
8. No motor voltage or current from  
machine.  
8. See Troubleshooting section in  
welding machine’s or wire feed-  
er’s instruction manual.  
9. Contact tip size too small for wire 9. Replace contact tip with one that  
diameter used.  
is the correct size.  
Sluggish wire feed when trigger is 1. Drive roll is worn or galled.  
pulled.  
1. Clean drive roll or replace drive  
roll.  
2. Machine’s wire feed speed set-  
ting is too low.  
2. Increase wire feed speed.  
3. Wire is obstructed somewhere  
along the wire feed path in the  
gun.  
3. Check for obstructions: Remove  
any wire shavings; remove kinked  
wire; remove and clean or  
replace gun liner.  
4. Low motor voltage.  
4. See Troubleshooting section in  
welding machine’s instruction  
manual.  
5. Gun cable is coiled/kinked.  
5. Remove all sharp curves from gun  
cable while welding.  
6. Mechanical resistance to wire  
feeding is too large  
6. If using a reverse bend gun tube,  
try welding with a non reverse  
bend product.  
CAUTION  
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your  
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
E-3  
E-3  
TROUbLESHOOTING  
Observe all Safety Guidelines detailed throughout this manual  
PRObLEMS  
(SYMPTOMS)  
POSSIbLE  
CAUSE  
RECOMMENDED  
COURSE OF ACTION  
Intermittent wire feed when trigger  
is pulled.  
1. Drive roll has become galled.  
1. Remove and then clean or  
replace drive roll.  
2. Wire has become kinked along its 2. Manually pull wire slowly thru gun  
feed path. until unkinked wire emerges.  
Frequent birdnesting or kinking of  
wire in the gun cable.  
1. Wire shavings/lubricant is build- 1. Clean cable or replace cable  
ing up in the cable. liner.  
2. Cable liner is too large for wire 2. Install the smallest possible liner  
size.  
which is specified for the wire  
being used (i.e. use a .052-1/16  
liner instead of a 1/16-5/64 liner  
when welding with 1/16” diameter  
wire.  
3. Mechanical resistance to wire 3. If using a reverse bend gun tube,  
feeding is too large.  
try welding with a non reverse  
bend product.  
Frequent occurrence of contact tip  
burnback.  
1. Improper welding parameters or 1. See welding wire literature for  
proper settings.  
technique (example: ESO is too  
short).  
2. Wire may be feeding intermittent- 2. See symptoms on intermittent or  
ly.  
sluggish wire feed.  
Poor weld bead appearance.  
1. Improper electrode polarity.  
1. Reconnect machine’s welding out-  
put to proper electrode polarity.  
2. Improper welding parameters or 2. See welding wire literature for  
technique. proper settings.  
Wire feeder runs or begins feeding  
wire without pulling the gun trigger.  
1. Defective trigger (contacts closed 1. Replace trigger assembly.  
or dirty).  
2. Defective (closed) trigger circuit 2. See machine’s instruction manu-  
in the welding machine.  
al.  
3. Trigger lead(s) inside gun cable 3. Damaged control leads along  
are shorted together or commonly  
shorted to either welding or  
accessory switch circuits.  
cable; repair if possible.  
Otherwise, replace gun cable.  
CAUTION  
If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your  
Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
Do not touch electrically live parts or  
electrode with skin or wet clothing.  
Insulate yourself from work and  
ground.  
Keep flammable materials away.  
Wear eye, ear and body protection.  
WARNING  
Spanish  
No toque las partes o los electrodos  
bajo carga con la piel o ropa moja-  
da.  
Mantenga el material combustible  
fuera del área de trabajo.  
Protéjase los ojos, los oídos y el  
cuerpo.  
AVISO DE  
PRECAUCION  
French  
Aislese del trabajo y de la tierra.  
Ne laissez ni la peau ni des vête-  
ments mouillés entrer en contact  
avec des pièces sous tension.  
Isolez-vous du travail et de la terre.  
Gardez à l’écart de tout matériel  
inflammable.  
Protégez vos yeux, vos oreilles et  
votre corps.  
ATTENTION  
German  
Berühren Sie keine stromführenden  
Teile oder Elektroden mit Ihrem  
Körper oder feuchter Kleidung!  
Isolieren Sie sich von den  
Entfernen Sie brennbarres Material!  
Tragen Sie Augen-, Ohren- und Kör-  
perschutz!  
WARNUNG  
Elektroden und dem Erdboden!  
Portuguese  
Não toque partes elétricas e electro-  
dos com a pele ou roupa molhada.  
Isole-se da peça e terra.  
Mantenha inflamáveis bem guarda-  
dos.  
Use proteção para a vista, ouvido e  
corpo.  
ATENÇÃO  
Japanese  
Chinese  
Korean  
Arabic  
READ AND UNDERSTAND THE MANUFACTURER’S INSTRUCTION FOR THIS EQUIPMENT AND THE  
CONSUMABLES TO BE USED AND FOLLOWYOUR EMPLOYER’S SAFETY PRACTICES.  
SE RECOMIENDA LEERY ENTENDER LAS INSTRUCCIONES DEL FABRICANTE PARA EL USO DE  
ESTE EQUIPOY LOS CONSUMIBLES QUE VA A UTILIZAR, SIGA LAS MEDIDAS DE SEGURIDAD DE SU  
SUPERVISOR.  
LISEZ ET COMPRENEZ LES INSTRUCTIONS DU FABRICANT EN CE QUI REGARDE CET EQUIPMENT  
ET LES PRODUITS A ETRE EMPLOYES ET SUIVEZ LES PROCEDURES DE SECURITE DE VOTRE  
EMPLOYEUR.  
LESEN SIE UND BEFOLGEN SIE DIE BETRIEBSANLEITUNG DER ANLAGE UND DEN ELEKTRO-  
DENEINSATZ DES HERSTELLERS. DIE UNFALLVERHÜTUNGSVORSCHRIFTEN DES ARBEITGEBERS  
SIND EBENFALLS ZU BEACHTEN.  
 
Keep your head out of fumes.  
Use ventilation or exhaust to  
remove fumes from breathing zone.  
Turn power off before servicing.  
Do not operate with panel open or  
guards off.  
WARNING  
Spanish  
Los humos fuera de la zona de res-  
piración.  
Mantenga la cabeza fuera de los  
humos. Utilice ventilación o  
aspiración para gases.  
Desconectar el cable de ali-  
mentación de poder de la máquina  
antes de iniciar cualquier servicio.  
No operar con panel abierto o  
guardas quitadas.  
AVISO DE  
PRECAUCION  
French  
Débranchez le courant avant l’entre-  
tien.  
N’opérez pas avec les panneaux  
ouverts ou avec les dispositifs de  
protection enlevés.  
Gardez la tête à l’écart des fumées.  
Utilisez un ventilateur ou un aspira-  
teur pour ôter les fumées des zones  
de travail.  
ATTENTION  
German  
Strom vor Wartungsarbeiten  
abschalten! (Netzstrom völlig öffnen;  
Maschine anhalten!)  
Anlage nie ohne Schutzgehäuse  
oder Innenschutzverkleidung in  
Betrieb setzen!  
Vermeiden Sie das Einatmen von  
Schweibrauch!  
Sorgen Sie für gute Be- und  
Entlüftung des Arbeitsplatzes!  
WARNUNG  
Portuguese  
Não opere com as tampas removidas.  
Desligue a corrente antes de fazer  
serviço.  
Mantenha-se afastado das partes  
moventes.  
Não opere com os paineis abertos  
ou guardas removidas.  
Mantenha seu rosto da fumaça.  
Use ventilação e exhaustão para  
remover fumo da zona respiratória.  
ATENÇÃO  
Não toque as partes elétricas nuas.  
Japanese  
Chinese  
Korean  
Arabic  
LEIA E COMPREENDA AS INSTRUÇÕES DO FABRICANTE PARA ESTE EQUIPAMENTO E AS PARTES  
DE USO, E SIGA AS PRÁTICAS DE SEGURANÇA DO EMPREGADOR.  
 
NOTES  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
NOTES  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
NOTES  
K126-10, K126-11 AND K126-12 INNERSHIELD® PRO  
 
• World's Leader in Welding and Cutting Products •  
• Sales and Service through Subsidiaries and Distributors Worldwide •  
Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEBꢀSITE: www.lincolnelectric.com  
 

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