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SP-170T

OPERATOR’S MANUAL

IM794April, 2006

Safety Depends on YouLincoln arc welding and cuttingequipment is designed and builtwith safety in mind. However, youroverall safety can be increased byproper installation ... and thought-ful operation on your part. DONOT INSTALL, OPERATE ORREPAIR THIS EQUIPMENTWITHOUT READING THISMANUAL AND THE SAFETYPRECAUTIONS CONTAINEDTHROUGHOUT. And, mostimportantly, think before you actand be careful.

For use with machine Code Numbers 10981

• Sales and Service through Subsidiaries and Distributors Worldwide •

Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com

• World's Leader in Welding and Cutting Products •

Copyright © 2006 Lincoln Global Inc.

This manual covers equipment which is no longer in production by The Lincoln Electric Co. Speci�cations and availability of optional features may have changed.

FOR ENGINEpowered equipment.

1.a. Turn the engine off before troubleshooting and maintenancework unless the maintenance work requires it to be running.

____________________________________________________1.b.Operate engines in open, well-ventilated

areas or vent the engine exhaust fumes outdoors.

____________________________________________________1.c. Do not add the fuel near an open flame

welding arc or when the engine is running.Stop the engine and allow it to cool beforerefueling to prevent spilled fuel from vaporiz-ing on contact with hot engine parts andigniting. Do not spill fuel when filling tank. Iffuel is spilled, wipe it up and do not startengine until fumes have been eliminated.

____________________________________________________1.d. Keep all equipment safety guards, covers and devices in

position and in good repair.Keep hands, hair, clothing andtools away from V-belts, gears, fans and all other movingparts when starting, operating or repairing equipment.

____________________________________________________

1.e. In some cases it may be necessary to remove safetyguards to perform required maintenance. Removeguards only when necessary and replace them when themaintenance requiring their removal is complete.Always use the greatest care when working near movingparts.

___________________________________________________1.f. Do not put your hands near the engine fan. Do not attempt

to override the governor or idler by pushing on the throttlecontrol rods while the engine is running.

___________________________________________________1.g. To prevent accidentally starting gasoline engines while

turning the engine or welding generator during maintenancework, disconnect the spark plug wires, distributor cap ormagneto wire as appropriate.

iSAFETYi

ARC WELDING CAN BE HAZARDOUS. PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH.KEEP CHILDREN AWAY. PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING.

Read and understand the following safety highlights. For additional safety information, it is strongly recommended that youpurchase a copy of “Safety in Welding & Cutting - ANSI Standard Z49.1” from the American Welding Society, P.O. Box351040, Miami, Florida 33135 or CSA Standard W117.2-1974. A Free copy of “Arc Welding Safety” booklet E205 is availablefrom the Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199.

BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR PROCEDURES AREPERFORMED ONLY BY QUALIFIED INDIVIDUALS.

WARNING

Mar ‘95

ELECTRIC AND MAGNETIC FIELDSmay be dangerous

2.a. Electric current flowing through any conductor causes localized Electric and Magnetic Fields (EMF). Welding current creates EMF fields around welding cables and welding machines

2.b. EMF fields may interfere with some pacemakers, andwelders having a pacemaker should consult their physicianbefore welding.

2.c. Exposure to EMF fields in welding may have other healtheffects which are now not known.

2.d. All welders should use the following procedures in order tominimize exposure to EMF fields from the welding circuit:

2.d.1. Route the electrode and work cables together - Securethem with tape when possible.

2.d.2. Never coil the electrode lead around your body.

2.d.3. Do not place your body between the electrode andwork cables. If the electrode cable is on your right side, the work cable should also be on your right side.

2.d.4. Connect the work cable to the workpiece as close aspossible to the area being welded.

2.d.5. Do not work next to welding power source.

1.h. To avoid scalding, do not remove theradiator pressure cap when the engine ishot.

CALIFORNIA PROPOSITION 65 WARNINGS

Diesel engine exhaust and some of its constituentsare known to the State of California to cause can-cer, birth defects, and other reproductive harm.

The engine exhaust from this product containschemicals known to the State of California to causecancer, birth defects, or other reproductive harm.

The Above For Diesel Engines The Above For Gasoline Engines

iiSAFETYii

ARC RAYS can burn.4.a. Use a shield with the proper filter and cover

plates to protect your eyes from sparks andthe rays of the arc when welding or observingopen arc welding. Headshield and filter lensshould conform to ANSI Z87. I standards.

4.b. Use suitable clothing made from durable flame-resistantmaterial to protect your skin and that of your helpers fromthe arc rays.

4.c. Protect other nearby personnel with suitable, non-flammablescreening and/or warn them not to watch the arc nor exposethemselves to the arc rays or to hot spatter or metal.

ELECTRIC SHOCK cankill.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 bareskin or wet clothing. Wear dry, hole-free

gloves to insulate hands.

3.b. Insulate yourself from work and ground using dry insulation.Make certain the insulation is large enough to cover your fullarea of physical contact with work and ground.

In addition to the normal safety precautions, if weldingmust be performed under electrically hazardousconditions (in damp locations or while wearing wetclothing; on metal structures such as floors, gratings orscaffolds; when in cramped positions such as sitting,kneeling or lying, if there is a high risk of unavoidable oraccidental contact with the workpiece or ground) usethe following equipment:

• Semiautomatic DC Constant Voltage (Wire) Welder.• DC Manual (Stick) Welder.• AC Welder with Reduced Voltage Control.

3.c. In semiautomatic or automatic wire welding, the electrode,electrode reel, welding head, nozzle or semiautomaticwelding gun are also electrically “hot”.

3.d. Always be sure the work cable makes a good electricalconnection with the metal being welded. The connectionshould 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 andwelding machine in good, safe operating condition. Replacedamaged insulation.

3.g. Never dip the electrode in water for cooling.

3.h. Never simultaneously touch electrically “hot” parts ofelectrode holders connected to two welders because voltagebetween the two can be the total of the open circuit voltageof both welders.

3.i. When working above floor level, use a safety belt to protectyourself from a fall should you get a shock.

3.j. Also see Items 6.c. and 8.

FUMES AND GASEScan be dangerous.5.a. Welding may produce fumes and gases

hazardous to health. Avoid breathing thesefumes and gases.When welding, keepyour head out of the fume. Use enoughventilation and/or exhaust at the arc to keep

fumes and gases away from the breathing zone. Whenwelding with electrodes which require specialventilation such as stainless or hard facing (seeinstructions on container or MSDS) or on lead orcadmium plated steel and other metals or coatingswhich produce highly toxic fumes, keep exposure aslow as possible and below Threshold Limit Values (TLV)using local exhaust or mechanical ventilation. Inconfined spaces or in some circumstances, outdoors, arespirator may be required. Additional precautions arealso required when welding on galvanized steel.

5.b. Do not weld in locations near chlorinated hydrocarbon vaporscoming from degreasing, cleaning or spraying operations.The heat and rays of the arc can react with solvent vapors toform phosgene, a highly toxic gas, and other irritating prod-ucts.

5.c. Shielding gases used for arc welding can displace air andcause injury or death. Always use enough ventilation,especially in confined areas, to insure breathing air is safe.

5.d. Read and understand the manufacturer’s instructions for thisequipment and the consumables to be used, including thematerial safety data sheet (MSDS) and follow youremployer’s safety practices. MSDS forms are available fromyour welding distributor or from the manufacturer.

5.e. Also see item 1.b.

Mar ‘95

FOR ELECTRICALLYpowered equipment.

8.a. Turn off input power using the disconnectswitch at the fuse box before working onthe equipment.

8.b. Install equipment in accordance with the U.S. NationalElectrical Code, all local codes and the manufacturer’srecommendations.

8.c. Ground the equipment in accordance with the U.S. NationalElectrical Code and the manufacturer’s recommendations.

CYLINDER may explodeif damaged.7.a. Use only compressed gas cylinders

containing the correct shielding gas for theprocess used and properly operatingregulators designed for the gas and

pressure used. All hoses, fittings, etc. should be suitable forthe application and maintained in good condition.

7.b. Always keep cylinders in an upright position securelychained to an undercarriage or fixed support.

7.c. Cylinders should be located:• Away from areas where they may be struck or subjected tophysical damage.

• A safe distance from arc welding or cutting operations andany other source of heat, sparks, or flame.

7.d. Never allow the electrode, electrode holder or any otherelectrically “hot” parts to touch a cylinder.

7.e. Keep your head and face away from the cylinder valve outletwhen opening the cylinder valve.

7.f. Valve protection caps should always be in place and handtight except when the cylinder is in use or connected foruse.

7.g. Read and follow the instructions on compressed gascylinders, associated equipment, and CGA publication P-l,“Precautions for Safe Handling of Compressed Gases inCylinders,” available from the Compressed Gas Association1235 Jefferson Davis Highway, Arlington, VA 22202.

iiiSAFETYiii

Mar ‘95

WELDING SPARKS cancause fire or explosion.6.a. Remove fire hazards from the welding area.

If this is not possible, cover them to preventthe welding sparks from starting a fire.Remember that welding sparks and hot

materials from welding can easily go through small cracksand openings to adjacent areas. Avoid welding nearhydraulic lines. Have a fire extinguisher readily available.

6.b. Where compressed gases are to be used at the job site,special precautions should be used to prevent hazardoussituations. Refer to “Safety in Welding and Cutting” (ANSIStandard Z49.1) and the operating information for theequipment being used.

6.c. When not welding, make certain no part of the electrodecircuit is touching the work or ground. Accidental contactcan cause overheating and create a fire hazard.

6.d. Do not heat, cut or weld tanks, drums or containers until theproper steps have been taken to insure that such procedureswill not cause flammable or toxic vapors from substancesinside. They can cause an explosion even though they havebeen “cleaned”. For information, purchase “RecommendedSafe Practices for the Preparation for Welding and Cutting ofContainers and Piping That Have Held HazardousSubstances”, AWS F4.1 from the American Welding Society(see address above).

6.e. Vent hollow castings or containers before heating, cutting orwelding. They may explode.

6.f. Sparks and spatter are thrown from the welding arc. Wear oilfree protective garments such as leather gloves, heavy shirt,cuffless trousers, high shoes and a cap over your hair. Wearear plugs when welding out of position or in confined places.Always wear safety glasses with side shields when in awelding area.

6.g. Connect the work cable to the work as close to the weldingarea as practical. Work cables connected to the buildingframework or other locations away from the welding areaincrease the possibility of the welding current passingthrough lifting chains, crane cables or other alternate cir-cuits. This can create fire hazards or overheat lifting chainsor cables until they fail.

6.h. Also see item 1.c.

ivSAFETYiv

PRÉCAUTIONS DE SÛRETÉPour votre propre protection lire et observer toutes les instructionset les précautions de sûreté specifiques qui parraissent dans cemanuel aussi bien que les précautions de sûreté générales suiv-antes:

Sûreté Pour Soudage A L’Arc1. Protegez-vous contre la secousse électrique:

a. Les circuits à l’électrode et à la piéce sont sous tensionquand la machine à souder est en marche. Eviter toujourstout contact entre les parties sous tension et la peau nueou les vétements mouillés. Porter des gants secs et sanstrous pour isoler les mains.

b. Faire trés attention de bien s’isoler de la masse quand onsoude dans des endroits humides, ou sur un planchermetallique ou des grilles metalliques, principalement dans les positions assis ou couché pour lesquelles une grandepartie du corps peut être en contact avec la masse.

c. Maintenir le porte-électrode, la pince de masse, le câblede soudage et la machine à souder en bon et sûr étatdefonctionnement.

d.Ne jamais plonger le porte-électrode dans l’eau pour lerefroidir.

e. Ne jamais toucher simultanément les parties sous tensiondes porte-électrodes connectés à deux machines à souderparce que la tension entre les deux pinces peut être letotal de la tension à vide des deux machines.

f. Si on utilise la machine à souder comme une source decourant pour soudage semi-automatique, ces precautionspour le porte-électrode s’applicuent aussi au pistolet desoudage.

2. Dans le cas de travail au dessus du niveau du sol, se protégercontre les chutes dans le cas ou on recoit un choc. Ne jamaisenrouler le câble-électrode autour de n’importe quelle partiedu corps.

3. Un coup d’arc peut être plus sévère qu’un coup de soliel,donc:

a. Utiliser un bon masque avec un verre filtrant appropriéainsi qu’un verre blanc afin de se protéger les yeux du ray-onnement de l’arc et des projections quand on soude ouquand on regarde l’arc.

b. Porter des vêtements convenables afin de protéger lapeau de soudeur et des aides contre le rayonnement del‘arc.

c. Protéger l’autre personnel travaillant à proximité ausoudage à l’aide d’écrans appropriés et non-inflammables.

4. Des gouttes de laitier en fusion sont émises de l’arc desoudage. Se protéger avec des vêtements de protection libresde l’huile, tels que les gants en cuir, chemise épaisse, pan-talons sans revers, et chaussures montantes.

5. Toujours porter des lunettes de sécurité dans la zone desoudage. Utiliser des lunettes avec écrans lateraux dans leszones où l’on pique le laitier.

6. Eloigner les matériaux inflammables ou les recouvrir afin deprévenir tout risque d’incendie dû aux étincelles.

7. Quand on ne soude pas, poser la pince à une endroit isolé dela masse. Un court-circuit accidental peut provoquer unéchauffement et un risque d’incendie.

8. S’assurer que la masse est connectée le plus prés possiblede la zone de travail qu’il est pratique de le faire. Si on placela masse sur la charpente de la construction ou d’autresendroits éloignés de la zone de travail, on augmente le risquede voir passer le courant de soudage par les chaines de lev-age, câbles de grue, ou autres circuits. Cela peut provoquerdes risques d’incendie ou d’echauffement des chaines et descâbles jusqu’à ce qu’ils se rompent.

9. Assurer une ventilation suffisante dans la zone de soudage.Ceci est particuliérement important pour le soudage de tôlesgalvanisées plombées, ou cadmiées ou tout autre métal quiproduit des fumeés toxiques.

10. Ne pas souder en présence de vapeurs de chlore provenantd’opérations de dégraissage, nettoyage ou pistolage. Lachaleur ou les rayons de l’arc peuvent réagir avec les vapeursdu solvant pour produire du phosgéne (gas fortement toxique)ou autres produits irritants.

11. Pour obtenir de plus amples renseignements sur la sûreté,voir le code “Code for safety in welding and cutting” CSAStandard W 117.2-1974.

PRÉCAUTIONS DE SÛRETÉ POURLES MACHINES À SOUDER ÀTRANSFORMATEUR ET ÀREDRESSEUR

1. Relier à la terre le chassis du poste conformement au code del’électricité et aux recommendations du fabricant. Le dispositifde montage ou la piece à souder doit être branché à unebonne mise à la terre.

2. Autant que possible, I’installation et l’entretien du poste seronteffectués par un électricien qualifié.

3. Avant de faires des travaux à l’interieur de poste, la debranch-er à l’interrupteur à la boite de fusibles.

4. Garder tous les couvercles et dispositifs de sûreté à leurplace.

Mar. ‘93

vv

Thank You for selecting a QUALITY product by Lincoln Electric. We want youto take pride in operating this Lincoln Electric Company product••• as much pride as we have in bringing this product to you!

Read this Operators Manual completely before attempting to use this equipment. Save this manual and keep ithandy 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:

WARNINGThis statement appears where the information must be followed exactly to avoid serious personal injury orloss of life.

This statement appears where the information must be followed to avoid minor personal injury or damage tothis equipment.

CAUTION

Please Examine Carton and Equipment For Damage ImmediatelyWhen this equipment is shipped, title passes to the purchaser upon receipt by the carrier. Consequently, Claimsfor material damaged in shipment must be made by the purchaser against the transportation company at thetime the shipment is received.

Please record your equipment identification information below for future reference. This information can befound on your machine nameplate.

Product _________________________________________________________________________________

Model Number ___________________________________________________________________________

Code Number or Date Code_________________________________________________________________

Serial Number____________________________________________________________________________

Date Purchased___________________________________________________________________________

Where Purchased_________________________________________________________________________

Whenever you request replacement parts or information on this equipment, always supply the information youhave recorded above. The code number is especially important when identifying the correct replacement parts.

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 packetaccompanying this machine and fax the form per the instructions printed on it.

• For On-Line Registration: Go to our WEB SITE at www.lincolnelectric.com. Choose “Quick Links” and then“Product Registration”. Please complete the form and submit your registration.

vi vi

TABLE OF CONTENTS

Page

Installation .......................................................................................................Section ATechnical Specifications ........................................................................................A-1Safety Precautions.................................................................................................A-2Identify and Locate Components ...........................................................................A-2Select Suitable Location ........................................................................................A-3Output Connections...............................................................................................A-3

Work Clamp Installation ..................................................................................A-3Work Cable Installation ...................................................................................A-3

Gun Installation......................................................................................................A-4Gas Connection.....................................................................................................A-4Input Connections..................................................................................................A-5Line Cord Connection............................................................................................A-6230 Volt Input Connection .....................................................................................A-6208 Volt Input Connection .....................................................................................A-6

________________________________________________________________________Operation .........................................................................................................Section B

Safety Precautions ................................................................................................B-1General Description ...............................................................................................B-2Design Features and Advantages .........................................................................B-2Welding Capability .................................................................................................B-2Limitations..............................................................................................................B-2Controls and Settings ............................................................................................B-2Welding Operations ...............................................................................................B-3

Wire Loading ...................................................................................................B-3Wire Threading................................................................................................B-4Making a Weld ................................................................................................B-5

Process Guidelines................................................................................................B-5Chaning Over to Feed Other Wire Sizes ...............................................................B-6Welding with GMAW..............................................................................................B-6Welding with FCAW...............................................................................................B-6Overload Protection...............................................................................................B-6Application Chart ...................................................................................................B-7

________________________________________________________________________Accessories .....................................................................................................Section C

Accessories ...........................................................................................................C-1Replacement Parts ................................................................................................C-2

________________________________________________________________________Maintenance ....................................................................................................Section D

Safety Precautions ................................................................................................D-1Routine Maintenance.............................................................................................D-1Gun and Cable Maintenance.................................................................................D-2Configuration of Components in Wire Feeding System.........................................D-2Component Replacement Procedures...........................................................D-3, D-4Gun Handle Parts ..................................................................................................D-5

________________________________________________________________________Troubleshooting ..............................................................................................Section E

Safety Precautions.................................................................................................E-1How to Use Troubleshooting Guide.......................................................................E-1Troubleshooting Guide.............................................................................E-2 thru E-4

________________________________________________________________________Wiring Diagrams ..............................................................................................Section F

SP-170T Wiring Diagram.......................................................................................F-1________________________________________________________________________

SP-170T Parts .....................................................................................P469, P202, P189________________________________________________________________________

A-1

SP-170T

A-1INSTALLATION

Fuse orOutput Mode Input Voltage Breaker Size Input Amps Power Cord

RATED 230V/60Hz 40 Super Lag 20/22 50 Amp, 250V,208V/60Hz Three-Prong Plug

(NEMA Type 6-50P)

TECHNICAL SPECIFICATIONS – SP-170TINPUT – SINGLE PHASE ONLY

RATED OUTPUT

OUTPUT

RECOMMENDED INPUT CABLE AND FUSE SIZES

Height Width Depth Weight12.0 in 9.75 in 16.5 in 57 Ibs305 mm 248 mm 419 mm 25.9 kg

PHYSICAL DIMENSIONS

Standard Voltage/Frequency Input Current230V/60Hz 20 Amps @ Rated Output208V/60Hz 22 Amps @ Rated Output

Duty Cycle Amps Volts at Rated Amperes20% Duty Cycle @ 230V/60Hz 130 2020% Duty Cycle @ 208V/60Hz 130 20

Welding Current Range Maximum Open Circuit Voltage Wire Speed RangeRated DC Output: 30 – 170 amps 33 50-400IPM (1.3-10.2m/min)

A-2 A-2INSTALLATION

SAFETY PRECAUTIONS

Read entire installation section before startinginstallation.

IDENTIFY AND LOCATE COMPONENTS

If you have not already done so, unpack the SP-170Tfrom its carton and remove all packing materialaround the SP-170T. Remove the following looseitems from the carton (see Figure A.1):

1. SP-170T

2. Gun and cable assembly(1)

3. Literature and miscellaneous including:

a) This operating manual

b) A separate .030" (0.8 mm) contact tip

c) Hex key wrench for removal of drive roll.

4. 10 ft (3,0 m) work cable.

5. Work clamp.

6. 2lb. Spool of Super Arc L-56 .025 MIG Wire.

7. Adjustable mixed-Gas Regulator & Hose.

(1) The gun is ready to feed .023" – .025" diameterwire.

ELECTRIC SHOCK can kill.

• Only qualified personnel should performthis installation.

• Only personnel that have read and under-stood the SP-170T Operating Manualshould install and operate this equipment.

• Machine must be plugged into a receptaclewhich is grounded per any national, localor other applicable electrical codes.

• The SP-170T power switch is to be in theOFF (“O”) position when installing workcable and gun and when connecting powercord to input power.

WARNING

FIGURE A.1

12

3

4

5

WELDING AMP RANGE

WELDING AMP RANGE25-125

25-125

6

7

SP-170T

SP-170T

A-3A-3 INSTALLATIONSELECT SUITABLE LOCATION

Locate the welder in a dry location where there is freecirculation of clean air into the louvers in the back andout the front of the unit. A location that minimizes theamount of smoke and dirt drawn into the rear louversreduces the chance of dirt accumulation that can blockair passages and cause overheating.

STACKING

SP-170T’s cannot be stacked.

TILTING

Each machine must be placed on a secure, level sur-face, either directly or on the recommended cart. Themachine may topple over if this procedure is not fol-lowed.

OUTPUT CONNECTIONS

Refer to Figure A.2.

1. Work Cable Access Hole.

2. Gun Cable and Control Lead Access Hole.

3. Connector Block.

4. Gun Trigger Lead Connectors.

5. Positive (+) and negative (–) output terminals.

6. Wire Feed Gearbox.

7. Cable Hanger.

8. Thumbscrew.

Refer to the Accessories Section for available optionalequipment.

Work Clamp Installation

Attach the work clamp per the following: Refer toFigure A-3.

SP-170T

1 2

EWELDING AMP RANGE

WELDING AMP RANGE

30-70

30-70

45

8

3 6 7

+

-

FIGURE A.3

1. Insert the work cable terminal lug with the largerhole through the strain relief hole in the work clampas shown above.

2. Fasten securely with the bolt and nut provided.

FIGURE A.2

A-4A-4 INSTALLATIONWork Cable Installation

Refer to Figure A.2.

1. Open the wire feed section door on the right side ofthe SP-170T.

2. Pass the end of the work cable that has the termi-nal lug with the smaller hole through the WorkCable Access Hole (1) in the case front.

3. Route the cable under and around the back of theWire Feed Gearbox (6).

4. For GMAW Only: Refer to Figure A.2. As deliv-ered, the machine is connected for positive elec-trode polarity. This is the appropriate configurationfor the GMAW (MIG) process. To complete installa-tion, use the provided wing nut to connect the workcable’s terminal lug to the negative (–) output ter-minal (5) located above the Wire Feed Gearbox(6). Make sure that both wing nuts are tight.

5. For Innershield Only: Refer to Figure A.4. To wirefor negative polarity (required for the Innershieldprocess), connect the short cable attached to theconnector block (1) to the negative (–) output termi-nal (2) and the work cable (3) to the positive (+) ter-minal (4).

FIGURE A.4

NOTE: If .035" or .045" (0.9 mm or 1.2 mm)Innershield flux-cored wire is to be used, the appropri-ate Innershield kit is required. (see ACCESSORIESsection)

Connecting Gun Cable to the SP-170T

1. Refer to Figure A.2. Unplug the machine or turnpower switch to the OFF “O” position.

2. Pass the insulated terminals of the gun trigger con-trol leads, one at a time, through the Gun Cableand Control Lead Access Slot (2) in the case front.The leads are to be routed up the inside of thecase front, behind the gas line.

3. Insert the connector on the gun conductor cablethrough the Gun Cable Access Hole (2) in theSP-170T case front. Make sure the connector is allthe way in the brass connector block to obtainproper gas flow. If the gun connector will not fullyinsert, unscrew the thumbscrew on the connectorblock a few turns. Rotate the connector so controlleads are on the underside and tighten theThumbscrew on the connector block.

4. Connect the gun trigger control lead terminals tothe two insulated 1/4" (6,4 mm) tab terminal con-nector bushings located above the “Gun TriggerConnection” decal in the wire feed section (4).Either lead can go to either connector.

If the gun trigger switch being used is other thanthat supplied, the switch must be a normally open,momentary switch. The terminals of the switchmust be insulated from the welding circuit.Malfunction of the SP-170T may result if thisswitch shorts to the SP-170T welding output cir-cuit or is common to any electrical circuit otherthan the SP-170T trigger circuit.

GAS CONNECTION

When using the GMAW process, a cylinder of shield-ing gas, must be obtained. For more information aboutselecting gas cylinders for use with the SP-170T, referto the ACCESSORIES section.

CAUTION

GUN INSTALLATION

As shipped from the factory, the SP-170T gun is readyto feed .023" – .025" solid wire. If .030"- .035” (0.8mm-.9mm) solid wire is to be used, change the con-tact tip to the appropriate size. If .035” Flux-cored wireis to be used, change the contact tip and nozzle to theappropriate type and orient the drive roll to the approri-ate groove size.

2

43

1

SP-170T

A-5A-5 INSTALLATION

SP-170T

2. With the cylinder securely installed, remove thecylinder cap. Stand to one side away from the out-let and open the cylinder valve very slightly for aninstant. This blows away any dust or dirt which mayhave accumulated in the valve outlet.

BE SURE TO KEEP YOUR FACE AWAY FROM THEVALVE OUTLET WHEN “CRACKING” THE VALVE.Never stand directly in front of or behind the flowregulator when opening the cylinder valve. Alwaysstand to one side.

3. Attach the flow regulator to the cylinder valve andtighten the union nut securely with a wrench.

NOTE: If connecting to 100% CO2 cylinder, insertregulator adapter (provided with MIG ConversionKit) between regulator and cylinder valve. If adapteris equipped with a plastic washer, be sure it is seat-ed for connection to the CO2 cylinder.

4. Refer to Figure A.6. Attach one end of inlet gashose to the outlet fitting of the flow regulator andtighten the union nut securely with a wrench.Connect the other end to the machine GasSolenoid Inlet Fitting (5/8-18 female threads — forCGA — 032 fitting). Make certain the gas hose isnot kinked or twisted.

5. Reinstall case side before connecting input power.

INPUT CONNECTIONSRefer to Figure A.6.

The machine has two input connections, the powerinput cable, and the Gas Solenoid Inlet Fitting. Bothare located on the rear of the machine.

FIGURE A.6

CYLINDER may explode if dam-aged. Keep cylinder upright andchained to support

• Keep cylinder away from areaswhere it may be damaged.

• Never lift welder with cylinderattached.

• Never allow welding electrode totouch cylinder.

• Keep cylinder away from weldingor other live electrical circuits.

BUILDUP OF SHIELDING GAS mayharm health or kill.

• Shut off shielding gas supplywhen not in use.

• SEE AMERICAN NATIONALSTANDARD Z-49.1, “SAFETY INWELDING AND CUTTING” PUB-LISHED BY THE AMERICANWELDING SOCIETY.

1. Chain the cylinder to a wall or other stationary sup-port to prevent the cylinder from falling over.Insulate the cylinder from the work circuit and earthground. Refer to Figure A.5.

FIGURE A.5

WARNING

Cylinder Valve

Gas Hose

Flow Regulator

WARNING

WARNING

POWER INPUTCABLE

GAS SOLENOIDINLET FITTING

A-6 A-6INSTALLATION

SP-170T

ELECTRICAL INPUT CONNECTION FORRATED OUTPUT


• Disconnect input power byremoving plug from receptaclebefore working inside SP-170T.

• Use only grounded receptacle.

• Do not touch electrically “hot”parts inside SP-170T.

• Have qualified personnel do themaintenance and troubleshootingwork.

230 Volt Input Connection

The SP-170T is shipped from the factory connectedfor 230 volt input power. If the welder has been recon-nected for 208 volt input power and 230 volt input isdesired, perform the following reconnection instruc-tions:

1. Disconnect welder from input power and removecase side panel.

2. Remove lead marked “H3” from CR1 on the controlP.C. Board.

3. Remove tape securing H1 to lead sleeving andconnect H1 to CR1.

4. Insulate unused H3 lead for 300 volts with electri-cal tape and secure to lead sleeving.


208 Volt Input Connection

1. Disconnect welder from input power and removecase side.

2. Remove lead marked “H1” from CR1 on the controlP.C. Board.

3. Remove tape securing H3 to lead sleeving andconnect H3 to CR1.

4. Insulate unused H1 lead for 300V with electricaltape and secure to lead sleeving.


Line Cord Connection

A 3 conductor line cord with a 50 amp, 250 volt, three-prong plug (NEMA Type 6-50P) is factory installed.Connect this plug to a mating grounded receptaclewhich is connected to an appropriate power supplyper the U.S. National Electric Code and any applicablelocal codes.

CONNECT TO A SYSTEMGROUNDING WIRE. SEETHE UNITED STATESNATIONAL ELECTRICALCODE AND/OR LOCALCODES FOR OTHERDETAILS AND MEANS FORPROPER GROUNDING.

CONNECT TO HOT WIRES OF A THREE-WIRE SINGLEPHASE SYSTEM OR TOONE PHASE OF A TWO ORTHREE PHASE SYSTEM.

This welding machine must be connected to apower source in accordance with applicable elec-trical codes.

The National Electrical Code provides standardsfor amperage handling capability of supply con-ductors based on duty cycle of the weldingsource.

If there is any question about the installationmeeting applicable electrical code requirements,consult a qualified electrician.

WARNING

GroundingType 75°C Wire Fuse

Wire in Conduit, Copper SizeInput Copper Cond. Cond. (Super

Voltage Hertz AWG Size AWG Size Lag)

208/230 60 8 10 40

WARNING

SP-170T

B-1B-1 OPERATION

Read entire operation section beforeoperating the SP-170T.

ELECTRIC SHOCK can kill.• Do not touch electrically live

parts or electrode with skin or wetclothing. Insulate yourself fromwork and ground.

• Always wear dry insulatinggloves.

FUMES AND GASES can bedangerous.• Keep your head out of fumes.

• Use ventilation or exhaust toremove fumes from breathingzone.

WELDING SPARKS cancause fire or explosion.• Keep flammable material away.

• Do not weld on closed containers.

ARC RAYS can burn eyesand skin.• Wear eye, ear and body protec-

tion.

Observe all safety information throughoutthis manual.

WARNING

GENERAL DESCRIPTIONThe SP-170T is a complete semiautomatic constantvoltage DC portable arc welder. Included is a tap-switch controlled, single phase constant voltage trans-former/rectifier power source and a wire feeder withwelding gun for feeding .023" (0.6 mm) through .030"(0.8 mm) solid steel electrode. Optional kits are avail-able for .035" (0.9 mm) and .045" (1.2 mm)Innershield® NR-211-MP.

It is ideally suited for individuals having access to 230or 208 volt 60 Hz AC input power and want the easeof use, quality and dependability of both gas metal arcwelding or GMAW (also known as MIG welding) andthe Innershield® process (self-shielded flux-cored orFCAW). A convenient chart is mounted inside the wirefeed section door for setting welding procedures for 24gauge (.60 mm) through 5/16" (8.0 mm) mild steel.The machine is rugged and reliable and has designedfor dependable service and long life.

RECOMMENDED PROCESSES

The SP-170T can be used for welding mild steel usingthe GMAW, single pass, process which requires asupply of shielding gas or it can be used for the self-shielded, Innershield® process (FCAW).

OPERATIONAL FEATURES AND CONTROLS

The SP-170T has the following controls as standard:Power ON/OFF Switch, Voltage Control, Wire SpeedControl, Trigger Switch, and a Circuit Breaker.

DESIGN FEATURES AND ADVANTAGES● Reconnect table for 230 volt or 208 volt single

phase 60 Hz input power.

● “Cold electrode” until gun trigger is pressed for anadded measure of safety.

● Overload protection — incorporates both a thermo-stat and a circuit breaker.

● Quality wire drive with electronic overload protec-tion.

● “Quick Release” idle roll pressure arm is easilyadjusted.

SAFTEY PRECAUTIONS

SP-170T

+

-

5

4

B-2B-2 OPERATION● Reversible, dual groove drive roll, shipped ready

to feed .023"/.025" (0.6 mm) diameter wire. Thedrive roll is easily reversed to feed .030" (0.8 mm)diameter solid wire and .035" (0.9 mm) flux-coreddiameter wire. Optional drive roll included in .045"(1.2 mm) Innershield® welding kit must be installedto feed .045" (1.2 mm) flux-cored wire.

● No external shielding gas is required when usedwith Lincoln .035” (0,9 mm) Innershield NR®-211-MP electrode.

● Spindle accommodates both 8 in. (200 mm) diame-ter and 4 in. (100 mm) diameter spools of wire.

WELDING CAPABILITYThe SP-170T is rated at 130 amps, 20 volts, at 20%duty cycle on a ten minute basis. It is capable of high-er output currents at lower duty cycles. .

LIMITATIONSArc Gouging cannot be performed with the SP-170T.The SP-170T is not recommended for pipe thawing orTIG welding.

CONTROLS AND SETTINGSSee Figure B.1a.

1. Power ON/OFF Switch —When the power is on thefan motor will run and air willbe exhausted out the louversin the front of the machine.The welding output and wirefeeder remain off until thegun trigger is pressed.

2. Voltage Control — A 5-posi-tion tap selector switch givesfull range adjustment ofpower source output voltage.Do not switch while welding.

3. Wire Speed Control —Controls the wire feed speedfrom 50 – 400 in/min (1.2 –10.2 m/min). The control canbe preset on the dial to thesetting specified on the SP-170T Application Chartlocated on the inside of thewire feed section door

OFF

ON

ARC VOLTS

WIRE SPEED

See Figure B.1b.

4. Circuit Breaker – Protects machine from damage ifmaximum output is exceeded. Button will extendout when tripped (Manual reset).

5. Gun Trigger - Activates welding output, wire feed,and gas solenoid operation. Releasing the triggerdeactivates welding and simultaneously activatesthe “burnback” function so that the welding wiredoes not stick in the weld puddle.

SP-170 T

3

2

1

FIGURE B.1a

FIGURE B.1b

SP-170T

B-3B-3 OPERATION

WELDING OPERATIONS

SEQUENCE OF OPERATION

Wire LoadingRefer to Figure B.2 and B.3.The machine power switch should be turned to theOFF (“O”) position before working inside the wire feedenclosure.

The machine is shipped from the factory ready to feed8” (200 mm) diameter spools [2.2” (56 mm) max.width]. These spools fit on a 2” (50 mm) diameterspindle that has a built-in adjustable friction brake toprevent overrun of the spool and excess slack in thewire.

Note:When loading and removing the 8” Spools makesure that the wing nut (inside the wire spool spindlehub) is turned 90° from the wire spool spindle lockingtab. If the wing nut is positioned in line with the lockingtab, the tab cannot be depressed to load or unload

the wire spool.

Load an 8” (200 mm) diameter spool on the wire spoolspindle shown in Figure B.2.

To use 4” (100 mm) diameter spools, the 2” (50 mm)diameter spindle must be removed (See Figure B.3).Remove the wing nut and spacer at the end of theshaft and remove the outside plastic wire spool spin-dle. The spindle can be stored in the wire feed com-partment. A 4” (100 mm) diameter spool is mounteddirectly on the 5/8” (16 mm) diameter shaft and held inplace with the previously removed hardware. Alsomake certain the start end of the wire, which may pro-trude through the side of the spool does not contactany metallic case parts.

FIGURE B.2

FIGURE B.3

Wire Spool must be pushed all the way on the spindle so that thespindle’s tab will hold it in place. The Wire Spool will rotate clock-wise when wire is dereeled.

8” Wire Spool

To Wire Drive

Wire Spool Spindle

Be sure that this stud engagesthe hole in the wire spool.

Wire Spindle Shaft 4" Wire Spool

Wing Nut and Spacer

To wire drive

B-4 B-4 OPERATIONNote: The brake should be adjusted with a spool of

wire installed. When properly adjusted it shouldmove freely but not coast.

Friction Brake Adjustments1. With wire spool installed, check free movement and

coast of the spool.

2. To tighten the brake turn the wing nut clockwise in1/4 turn increments until coasting stops.

3. To loosen the brake turn the wing nut counter-clockwise in 1/4 turn increments until the wire spoolmoves freely without coasting.

Wire Threading Refer to Figure B.4

1. Release the Spring Loaded Pressure Arm (1)rotate the Idle Roll Arm (2) away from the WireFeed Drive Roll (3). Ensure that the groove size inthe feeding position on the drive roll matches thewire size being used. See Maintenance section forfurther information.

2. Carefully detach the end of the wire from thespool. To prevent the spool from unwinding, main-tain tension on the wire until after step 5.

3. Cut the bent portion of wire off and straighten thefirst 4” (100 mm).

4. Thread the wire through the ingoing guide tube(4), over the drive roll (3), and into the outgoingguide tube (5).

5. Close the idle roll arm and latch the spring loadedpressure arm (2) in place. Rotate the spool coun-terclockwise if required to take up extra slack inthe wire.

6. The idle roll pressure adjustment wing nut is nor-mally set for mid-position on the pressure armthreads. If feeding problems occur because thewire is flattened excessively, turn the pressureadjustment counter-clockwise to reduce distortionof the wire. Slightly less pressure may be requiredwhen using 0.023 – 0.025” (0,6 mm) wire. If the

6. drive roll slips while feeding wire, the pressureshould be increased until the wire feeds properly.

7. Refer to Figure B.5. Remove gas nozzle and con-tact tip from end of gun.

When inching the welding wire, the drive rolls, thegun connector block and the gun contact tip areelectrically energized relative to work and groundand remain energized for several seconds afterthe gun trigger is released.

8. Turn the SP-170T ON (“I”).

9. Straighten the gun cable assembly.

10. Depress the gun trigger switch and feed weldingwire through the gun and cable. (Point gun awayfrom yourself and others while feeding wire.)Release gun trigger after wire appears at end ofgun.

11. Turn the SP-170T OFF (“O”).

12. Replace contact tip and gas nozzle.

13. Refer to Figure B-6. Cut the wire off 3/8” – 1/2” (10– 13 mm) from the end of the tip. The SP-170T isnow ready to weld.

WARNING

FIGURE B.4

The Wire Drive Feed Rollcan accommodate two wiresizes by fl ipping the wiredrive feed roll over.

FIGURE B.5

Gun Handle

Gas Diffuser/Contact Tip

Gas Nozzle

1

2

3

4

5

SP-170T

Wire from spool.

B-5 B-5OPERATION

Making A Weld1. See “Process Guidelines” in this section for selec-

tion of welding wire and shielding gas and forrange of metal thicknesses that can be welded.

2. See the Application chart on the inside of the wirefeed compartment door for information on settingthe SP-170T controls. Refer to Table B.1 for alu-minum and stainless wire.

3. Set the Voltage (“V”) and Wire Speed (“olo’”) con-trols to the settings suggested for the welding wireand base metal thickness being used, refer to

3. Applications chart on the inside of the wire drivecompartment door.

4. Check that the polarity is correct for the weldingwire being used and that the gas supply, ifrequired, is turned on.

5. When using Innershield electrode, remove the gasnozzle and install the gasless nozzle. This willimprove visibility of the arc and protect the gas dif-fuser from weld spatter. Refer to the MAINTE-NANCE section for details on nozzle replacement.

6. Refer to Figure B.7. Connect work clamp to metalto be welded. Work clamp must make good elec-trical contact to the workpiece. The workpiecemust also be grounded as stated in “Arc WeldingSafety Precautions” in the beginning of this manu-al.

7. Position gun over joint. End of wire may be lightlytouching the work.

8. Lower welding helmet, close gun trigger, andbegin welding. Hold the gun so the contact tip towork distance is about 3/8 inch (10 mm).

9. To stop welding, release the gun trigger and thenpull the gun away from the work after the arc goesout.

FIGURE B.6

10. When no more welding is to be done, close valveon gas cylinder (if used), momentarily operate guntrigger to release gas pressure, and turn off theSP-170T.

Cleaning Tip And NozzleClean the contact tip and nozzle to avoid arc bridgingbetween the nozzle and contact tip which can result ina shorted nozzle, poor welds and an overheated gun.Hint: Anti-stick spray or gel, available from a weldingsupply distributor, may reduce buildup and aid in spat-ter removal.

PROCESS GUIDELINES

The SP-170T can be used for welding mild steel usingthe GMAW, single pass, process which requires asupply of shielding gas or it can be used for the self-shielded, Innershield® process (FCAW).

The recommended gases and electrodes for GMAWare welding grade CO2 gas or an argon-CO2 blendedgas (75 to 80% argon and 25 to 20% CO2) and .025"(0.6 mm) diameter Lincoln Super Arc L-56 mild-steelwelding wire. The blended gas is recommended forwelding on heavier steel, 14 gauge (2.0 mm), forexample.

The recommended electrode for the self-shieldedprocess is Lincoln Innershield® NR-211-MP. This elec-trode is available as .035" (0.9 mm) and .045" (1.2mm) NR-211-MP for all position welding of 18 gauge(1.2 mm) through 5/16" (8.0 mm) steel. Thickness of1/4" (6.4 mm) and 5/16" (7.9 mm) require multiplepasses. both wire sizes can also be used for the weld-ing of galvanized coated sheet metal.

FIGURE B.7

WORKPIECE

GUN CABLE

ARC

WORK CLAMP

SP-170T

Contact Tip

Wire Electrode3/8"– 1/2"(10-13mm) ContactTip to Work Distance(CTWD)

SP-170T

B-6B-6 OPERATIONThe SP-170T is suitable for .035" aluminum wire and.023"– .035" stainless wire. Refer to Table B.1 for rec-ommended procedure settings. (Requires K586-1Deluxe Adjustable kit and K664-2 Aluminum -Stainless Feeding Kit.)

It is important when changing between weldingwith steel wire and aluminum to exchange feedingcomponents due to the lubricant applied to steelwire. Failure to do so may result in contaminatedwelds when welding aluminum.------------------------------------------------------------------------

TABLE B.1 — SP-170T WELDING PROCEDURES

NOTE: * Test assembly preheat to 250°F.

CHANGING MACHINE OVER TOFEED OTHER WIRE SIZES

The SP-170T is shipped from the factory ready to feed0.023” – .025" (0.9 mm) diameter wire. To operate theSP-170T with other sizes of wire, it may be necessaryto change the contact tip, drive roll, and the gun linerconfiguration. Refer to the MAINTENANCE section,for component configuration and placement.

WELDING WITH GMAW (MIG)

Shielding GasWhen using the GMAW process, install the gas regu-lator and hose. If using 100% CO2 a CO2 adapter isrequired, sold separately.

1. For CO2, open the cylinder very slowly. For argon-mixed gas, open cylinder valve slowly a fraction ofa turn. When the cylinder pressure gauge pointerstops moving, open the valve fully.

2. If using a regulator with an adjustable flow meter,close the gun trigger and adjust the flow to give 15

– 20 cubic ft per hour (CFH) (7 – 10 I/min) [use 20 –25 CFH (10 – 12 I/min) when welding out of positionor in a drafty location.

3. Keep the cylinder valve closed, except when usingthe SP-170T. When finished welding:

a) Close the cylinder valve to stop gas flow.

b) Depress the gun trigger briefly to release thepressure in the gas hose.

c) Turn off the SP-170T.

WELDING WITH FCAW (Innershield)

When using the FCAW process, the correct drive rolland electrode polarity must be used. See Work CableInstallation in INSTALLATION section for changing thepolarity.

Innershield welding kits K549-1 (for .035") and K549-2(for .045") are also available.

OVERLOAD PROTECTION

Output OverloadThe SP-170T is equipped with a circuit breaker whichprotects the machine from damage if a severe over-load occurs. The circuit breaker button will extend outwhen tripped. The circuit breaker must be manuallyreset.

Thermal ProtectionThe SP-170T has a rated output duty cycle of 20%. Ifthe duty cycle is exceeded, a thermal protector willshut off the output until the machine cools to a reason-able operating temperature. This is an automatic func-tion of the SP-170T and does not require user inter-vention. The fan continues to run during cooling.

Electronic Wire Drive Motor ProtectionThe SP-170T has built-in protection for wire drivemotor overload.

CAUTION

Shielding Voltage/Wire SpeedProcess Welding Wire Gas 22 ga 16 ga 12 ga 1/8” 3/16” 1/4”

.035 Dia(0.9mm 100% Argon A-4.5 B-6.5 D-8.5 D-10 E-10 E-10*4043 AluminumWire

MIG DC+18 ga 16 ga 14 ga 12 ga 10 ga

.030 Dia 98% Argon/ A-2 B-3 C-5 D-7 E-10

308L Stainless 2% OxygenSteel Wire

B-7

SP-170T

B-7 APPLICATION CHART

C-1C-1 ACCESSORIESOPTIONAL ACCESSORIES

1. K549-1 .035" (0.9 mm) Innershield® Welding Kit— Includes a contact tip, a gasless nozzle and a.030/.035" (.8/.9 mm) cable liner to permit theMagnum™ 100L gun and cable to use .035" (0.9mm) diameter flux-cored electrode. The fitting onthe end of the liner is stenciled with the maximumrated wire size (.045"/1.2 mm). Also included is a10 lb.(4.5 kg.) spool of .035" (0.9 mm) Innershield®

NR-211-MP.

See “Innershield (FCAW) Conversion” in this sec-tion for installation instructions and MAINTE-NANCE section for proper feeding component con-figuration and installation.

2. K549-2 .045" (1.2 mm) Innershield® Welding Kit— Includes a contact tip, a gasless nozzle and a.035/.045" (0.9/1.2 mm) cable liner to permit theMagnum™ 100L gun and cable to use .045" (1.2mm) diameter flux-cored electrode. The fitting onthe end of the liner is stenciled with the maximumrated wire size (.045"/1.2 mm). Also included is a10 lb.(4.5 kg.) spool of .045" (1.2 mm) Innershield®

NR-211-MP and a knurled drive roll.

See “Innershield (FCAW) Conversion” in this sec-tion for installation instructions and MAINTE-NANCE section for proper feeding component con-figuration and installation.

3. K664-2 Aluminum Feeding Kit — This kit is rec-ommended for welding with .035 Aluminum wire.Included with this kit are a drive roll, cable liner and.035 contact tip. It is important when changingbetween welding with steel wire and aluminumto exchange feeding components due to thelubricant applied to steel wire. Failure to do somay result in contaminated welds when weldingaluminum.

See Maintenance section for instructions oninstalling drive roll, cable liner, contact tip and theirproper configuration.

4. KP665-045C Drive Roll – Optional — Knurleddrive roll for feeding .035 - .045” (0.9 - 1.2 mm)diameter flux-cored electrode.

5. K520 Utility Cart — Designed to transport theLincoln family of small welders. Has provisions formounting a single gas cylinder. Has front castersand large rear wheels. Handle height is easilyadjustable. Bottom tray provided for tools andaccessories. Easy assembly required; takes lessthan 15 minutes.

6. K586-1 Deluxe Adjustable Gas Regulator &Hose Kit

Accommodates CO2 , Argon or Argon-blend gascylinders. Includes a cylinder pressure gauge and4.3 ft. (1.3m) gas hose.

7. K697-2 Power Cord Extension — Extension 230Vpower cord (20’/6.1m) allows extra conveniencewhen work is located some distance away frompower receptacle.

8. K667-1 230 Volt 50 Amp Receptacle — For pro-viding power for your SP-170T at your welding loca-tion. NEMA standard 6-50 R receptacle. See “LineCord Connection” in INSTALLATION section forrecommended wire size.

(1) This regulator comes standard with a 4.5 foot hosewith the SP-170T.

SP-170T

C-2 C-2ACCESSORIESINNERSHIELD (FCAW) CONVERSION

Several changes are needed to convert the unit foroperation with the Innershield (FCAW) process. TheK549-1 or K549-2 Innershield Kits include all the nec-essary accessories for this conversion and are provid-ed for this purpose. The following conversions shouldbe made using the contents of this kit:

1. Change the output polarity to DC(–). See “WorkCable Installation” in Installation section for details.

2. Install proper drive roll for the wire size selected.See “Changing Drive Roll” in Maintenance sectionfor details.

3. Install the proper gun liner(*)and tip for the wiresize selected. See “Component Replacement” inMaintenance section for details.

4. Remove gas nozzle (if installed) and install gaslessnozzle. To remove, simply unscrew.

5. Load wire into machine and thread into gun andcable per “Welding Wire Loading” section.

* The factory installed gun liner will feed .025-.035(0.6-0.9mm)

REPLACEMENT PARTS

Complete Gun and Cable Assembly(K530-4)

Contact Tip .025” (0.6 mm)KP2039-1



Contact Tip .045” (1.2 mm)KP2039-4B1

Contact Tip-Tapered .025” (0.6 mm)KP2052-1



Contact Tip-Tapered .045” (1.2mm)KP2052-4B1

Liner .030/.035” (0.8/0.9 mm)KP1937-3

Liner .035/.045” (0.9/1.2 mm)KP1937-1

Gas DiffuserKP2040-1

Gas NozzleKP1938-1

Gas Nozzle-Tip Recessed 3/8” (9.5 mm) Opening I.D.KP1942-1



Spot Welding NozzleKP1956-1

Gasless Nozzle (Innershield Only)KP1939-1

SP-170T

D-1D-1 MAINTENANCEMAINTENANCE

SAFETY PRECAUTIONS


• Disconnect input power by removingplug from receptacle before workinginside SP-170T. Use only groundedreceptacle. Do not touch electrically“hot” parts inside SP-170T.

• Have qualified personnel do the mainte-nance and trouble shooting work.

ROUTINE MAINTENANCE

POWER SOURCE COMPARTMENTIn extremely dusty locations, dirt may clog the air passagescausing the welder to run hot. Blow dirt out of the welder withlow pressure air at regular intervals to eliminate excessive dirtand dust build-up on interval parts.

WIRE FEED COMPARTMENT

1. When necessary, vacuum accumulated dirt from gearboxand wire feed section.

2. Occasionally inspect the incoming guide tube and cleaninside diameter if necessary.

3. Motor and gearbox have lifetime lubrication and require nomaintenance.

FAN MOTOR

Has lifetime lubrication — requires no maintenance.

WIRE REEL SPINDLE

Requires no maintenance. Do not lubricate shaft.

WARNING

SP-170T

D-2D-2 MAINTENANCEGUN AND CABLE MAINTENANCE

FOR MAGNUM™ 100L GUN

Gun Cable CleaningClean cable liner after using approximately 300 lbs(136 kg) of solid wire or 50 lbs (23 kg) of flux-coredwire. Remove the cable from the wire feeder and lay itout straight on the floor. Remove the contact tip fromthe gun. Using low pressure air, gently blow out thecable liner from the gas diffuser end.

Excessive pressure at the start may cause the dirtto form a plug.

Flex the cable over its entire length and again blowout the cable. Repeat this procedure until no furtherdirt comes out.

Contact Tips, Nozzles, and Gun Tubes1. Dirt can accumulate in the contact tip hole and

restrict wire feeding. After each spool of wire isused, remove the contact tip and clean it by push-ing a short piece of wire through the tip repeatedly.Use the wire as a reamer to remove dirt that maybe adhering to the wall of the hole through the tip.

2. Replace worn contact tips as required. A variableor “hunting” arc is a typical symptom of a worn con-tact tip. To install a new tip, choose the correct sizecontact tip for the electrode being used (wire size isstenciled on the side of the contact tip) and screw itsnugly into the gas diffuser.

3. Remove spatter from inside of gas nozzle and fromtip after each 10 minutes of arc time or as required.

4. Be sure the gas nozzle is fully screwed onto thediffuser for gas shielded processes. For theInnershield® process, the gasless nozzle should bescrewed onto the diffuser.

5. To remove gun tube from gun, remove gas nozzleor gasless nozzle and remove diffuser from guntube. Remove both collars from each end of thegun handle and separate the handle halves.Loosen the locking nut holding the gun tube inplace against the gun end cable connector.Unscrew gun tube from cable connector. To installgun tube, screw the locking nut on the gun tube asfar as possible. Then screw the gun tube into thecable connector until it bottoms. Then unscrew (nomore than one turn) the gun tube until its axis isperpendicular to the flat sides of the cable connec-tor and pointed in the direction of the trigger.Tighten the locking nut so as to maintain the properrelationship between the gun tube and the cableconnector. Replace the gun handle, trigger and dif-fuser. Replace the gas nozzle or gasless nozzle.

CAUTION

CONFIGURATION OF COMPONENTS IN WIRE FEEDING SYSTEMContact Tip Cable Liner Drive Roll

Components shipped with KP2039-1B1 (Installed) KP1937-3 KP665-035SP-170T• .025” (0.6mm) .030-.035” 2 Smooth grooves

(0.8-0.9mm) Small .023-.025 (0.6mm)Large .030” (0.8mm)

K549-1 .035” (0.9mm) KP2039-3B1 KP1937-3 Use Large groove of KP665-035Innershield Welding Kit .035” (0.9mm) .035 (0.9mm)

K549-2 .045” (1.2mm) KP2039-4B1 KP1937-1 KP665-045C - Use Large groove Innershield Welding Kit .045” (1.2mm) .045” (1.2mm)

K664-2 .035 (0.9mm) KP2078-1B1 KP1959-1 M19631Aluminum or Stainless Kit* .035A (0.9mm) .035” (0.9mm)

• If .030 (0.8mm) Solid wire feeding is desired use the KP2039-2B1 Contact Tip shipped loose with your SP-170T.

* It is important when changing between welding with steel wire and aluminum to exchange feeding components due to the lubricant applied to steel wire. Failureto do so may result in contaminated welds when welding aluminum.

SP-170T

D-3D-3 MAINTENANCE

COMPONENTREPLACEMENTPROCEDURES

CHANGING THE CONTACT TIP

1. Refer to Figure D.2. Remove the gas nozzle fromthe gun by unscrewing counter-clockwise.

2. Remove the existing contact tip from the gun byunscrewing counter-clockwise.

3. Insert and hand tighten desired contact tip.

4. Replace gas nozzle.

CHANGING DRIVE ROLL

The drive roll Item 1, has two grooves; one for .023" –.025" (0.6 mm) solid steel electrode and a largergroove for .030" (0.8 mm) solid and .035" (0.9 mm)flux-cored steel electrode. As shipped, the drive roll isinstalled in the .023"-.025" (0.6 mm) position.

If .030"/.035" (0.8/0.9 mm) wire is to be used, thedrive roll must be reversed as follows:

1. Connect the machine to its rated input power perinstructions in Installation section.

2. Release the spring-loaded idle arm tensioner,Item 2, andlift the idle roll arm, Item 3, away from the drive roll, Item1. (See Figure D.1)

3. Turn the power switch to ON (marked “I”).

4. Set the wire speed to minimum and jog the driveunit with the trigger switch until the drive roll setscrew is facing up.

When inching the welding wire, the drive rolls,gun connector block, and gun contact tip areenergized relative to work and ground and remainenergized for several seconds after the gun trig-ger is released.

5. Turn the power switch to OFF (marked “O”).

6. Loosen the drive roll set screw with the 5/64" (2.0mm) hex wrench supplied.

7. Remove the drive roll, flip over and reinstall with the.030/.035" (0.8/0.9 mm) groove (the larger groove)closest to the gearbox.

8. Push a length of straightened welding wire throughthe wire feeder guide tubes and adjust the positionof the drive roll so that the groove is centered onthe wire. Make certain the set screw is located onthe flat portion of the shaft and tighten.

FIGURE D.1

CAUTION

3

2

1

SP-170T

D-4 D-4MAINTENANCE

SP-170T

CHANGING LINER

NOTICE: The variation in cable lengths prevents theinterchangeability of liners. Once a liner has been cutfor a particular gun, it should not be installed in anoth-er gun unless it can meet the liner cutoff lengthrequirement. Refer to Figure D.2.

1. Remove the gas nozzle from the gun by unscrew-ing counter-clockwise.

2. Remove the existing contact tip from the gun byunscrewing counter-clockwise.

3. Remove the gas diffuser from the gun tube byunscrewing counter-clockwise.

4. Lay the gun and cable out straight on a flat surface.Loosen the set screw located in the brass connec-tor at the wire feeder end of the cable. Pull the linerout of the cable.

1-1/4 (31.8 mm)Liner Trim Length

Gas Diffuser

Gas Nozzle orGasless NozzleSet Screw Brass Cable

Connector

Liner Assembly (Liner bushing to be sealed tightagainst brass cable connector)

FIGURE D.2Liner trim length

5. Insert a new untrimmed liner into the connector endof the cable. Be sure the liner bushing is stenciledappropriately for the wire size being used.

6. Fully seat the liner bushing into the connector.Tighten the set screw on the brass cable connector.At this time, the gas diffuser should not be installedonto the end of the gun tube.

7. With the gas nozzle and diffuser removed from thegun tube, be sure the cable is straight, and thentrim the liner to the length shown in the Figure D.2.Remove any burrs from the end of the liner.

8. Screw the gas diffuser onto the end of the gun tubeand securely tighten.

9. Replace the contact tip and nozzle.

D-5D-5 MAINTENANCE

GUN HANDLE PARTS

The gun handle consists of two halves that are heldtogether with a collar on each end. To open up thehandle, turn the collars approximately 60 degreescounter-clockwise until the collar reaches a stop. Thenpull the collar off the gun handle. If the collars are diffi-cult to turn, position the gun handle against a corner,place a screwdriver against the tab on the collar andgive the screwdriver a sharp blow to turn the collarpast an internal locking rib. See Figure D-3.

FIGURE D.3➣

Counter-clockwise

SP-170T

E-1E-1 TROUBLESHOOTING

SP-170T

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact yourLocal Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

CAUTION

This Troubleshooting Guide is provided to help youlocate and repair possible machine malfunctions.Simply follow the three-step procedure listed below.

Step 1. LOCATE PROBLEM (SYMPTOM).Look under the column labeled “PROBLEM (SYMP-TOMS)”. This column describes possible symptomsthat the machine may exhibit. Find the listing thatbest describes the symptom that the machine isexhibiting.

Step 2. POSSIBLE CAUSE.The second column labeled “POSSIBLE CAUSE” liststhe obvious external possibilities that may contributeto the machine symptom.

Step 3. RECOMMENDED COURSE OF ACTIONThis column provides a course of action for thePossible Cause, generally it states to contact yourlocal Lincoln Authorized Field Service Facility.

If you do not understand or are unable to perform theRecommended Course of Action safely, contact yourlocal Lincoln Authorized Field Service Facility.

HOW TO USE TROUBLESHOOTING GUIDE

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 andmachine operator and will invalidate your factory warranty. For your safety and to avoid ElectricalShock, please observe all safety notes and precautions detailed throughout this manual.

__________________________________________________________________________

WARNING

E-2 E-2TROUBLESHOOTING

SP-170T

PROBLEMS(SYMPTOMS)

Major physical or electrical damageis evident.

No wire feed, weld output or gasflow when gun trigger is pulled. Fandoes NOT operate.

No wire feed, weld output or gasflow when gun trigger is pulled. Fanoperates normally.

POSSIBLECAUSE

NoneContact your local Authorized FieldService Facility.

1. Make sure correct voltage isapplied to the machine. SeeInstallation section, “ElectricalConnections”.

2. Make certain that power switchis in the ON position.

3. Make sure circuit breaker isreset.

1. The thermostat may be trippeddue to overheating. Let machinecool. Weld at lower duty cycle.

2. Check for obstructions in airflow.

3. Check Gun Trigger connections.See Installation section.

4. Gun trigger may be faulty.

RECOMMENDEDCOURSE OF ACTION

Contact your local LincolnAuthorized Field Service Facility.

OUTPUT PROBLEMS

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact yourLOCAL AUTHORIZED LINCOLN ELECTRIC FIELD SERVICE FACILITY for assistance before you proceed.

CAUTION

Observe Safety Guidelines detailed in the beginning of this manual.

E-3E-3 TROUBLESHOOTING

SP-170T


PROBLEMS(SYMPTOMS)

No wire feed when gun trigger ispulled. Fan runs, gas flows andmachine has correct open circuitvoltage (33 vcd maximum) – weldoutput.

POSSIBLECAUSE

1. If the wire drive motor is runningmake sure that the correct driverolls are installed in themachine.

2. Check for clogged cable liner orcontact tip.

3. Check for proper size cable linerand contact tip.



FEEDING PROBLEMS


CAUTION

Low or no gas flow when guntrigger is pulled. Wire feed, weldoutput and fan operate normally.

1. Check gas supply, flow regulatorand gas hoses.

2. Check gun connection tomachine for obstruction or leakyseals.


GAS FLOW PROBLEMS

E-4

SP-170T

E-4 TROUBLESHOOTING


CAUTION

PROBLEMS(SYMPTOMS)

Arc is unstable – Poor starting

POSSIBLECAUSE

1. Check for correct input voltageto machine. See Installation sec-tion, “Electrical InputConnections”.

2. Check for proper electrodepolarity for process.

3. Check gun tip for wear or dam-age and proper size – Replace.

4. Check for proper gas and flowrate for process. (For MIG only.)

5. Check work cable for loose orfaulty connections.

6. Check gun for damage orbreaks.

7. Check for proper drive roll orien-tation and alignment.

8. Check liner for proper size.



WELDING PROBLEMS


F-1F-1 WIRING DIAGRAMS

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SP-170T

NOTES

WARNING

AVISO DEPRECAUCION

ATTENTION

WARNUNG

ATENÇÃO

Spanish

French

German

Portuguese

Japanese

Chinese

Korean

Arabic

READ AND UNDERSTAND THE MANUFACTURER’S INSTRUCTION FOR THIS EQUIPMENT AND THE CONSUMABLES TO BEUSED AND FOLLOW YOUR EMPLOYER’S SAFETY PRACTICES.

SE RECOMIENDA LEER Y ENTENDER LAS INSTRUCCIONES DEL FABRICANTE PARA EL USO DE ESTE EQUIPO Y LOSCONSUMIBLES 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 AETRE EMPLOYES ET SUIVEZ LES PROCEDURES DE SECURITE DE VOTRE EMPLOYEUR.

LESEN SIE UND BEFOLGEN SIE DIE BETRIEBSANLEITUNG DER ANLAGE UND DEN ELEKTRODENEINSATZ DES HER-STELLERS. DIE UNFALLVERHÜTUNGSVORSCHRIFTEN DES ARBEITGEBERS SIND EBENFALLS ZU BEACHTEN.

● Do not touch electrically live parts orelectrode with skin or wet clothing.

● Insulate yourself from work andground.

● No toque las partes o los electrodosbajo carga con la piel o ropa moja-da.

● Aislese del trabajo y de la tierra.

● Ne laissez ni la peau ni des vête-ments mouillés entrer en contactavec des pièces sous tension.

● Isolez-vous du travail et de la terre.

● Berühren Sie keine stromführendenTeile oder Elektroden mit IhremKörper oder feuchter Kleidung!

● Isolieren Sie sich von denElektroden und dem Erdboden!

● Não toque partes elétricas e elec-trodos com a pele ou roupa molha-da.

● Isole-se da peça e terra.

● Keep flammable materials away.

● Mantenga el material combustiblefuera del área de trabajo.

● Gardez à l’écart de tout matérielinflammable.

● Entfernen Sie brennbarres Material!

● Mantenha inflamáveis bem guarda-dos.

● Wear eye, ear and body protection.

● Protéjase los ojos, los oídos y elcuerpo.

● Protégez vos yeux, vos oreilles etvotre corps.

● Tragen Sie Augen-, Ohren- und Kör-perschutz!

● Use proteção para a vista, ouvido ecorpo.

WARNING

AVISO DEPRECAUCION

ATTENTION

WARNUNG

ATENÇÃO

Spanish

French

German

Portuguese

Japanese

Chinese

Korean

Arabic

LEIA E COMPREENDA AS INSTRUÇÕES DO FABRICANTE PARA ESTE EQUIPAMENTO E AS PARTES DE USO, E SIGA ASPRÁTICAS DE SEGURANÇA DO EMPREGADOR.

● Keep your head out of fumes.● Use ventilation or exhaust to

remove fumes from breathing zone.

● Los humos fuera de la zona de res-piración.

● Mantenga la cabeza fuera de loshumos. Utilice ventilación oaspiración para gases.

● Gardez la tête à l’écart des fumées.● Utilisez un ventilateur ou un aspira-

teur pour ôter les fumées des zonesde travail.

● Vermeiden Sie das Einatmen vonSchweibrauch!

● Sorgen Sie für gute Be- undEntlüftung des Arbeitsplatzes!

● Mantenha seu rosto da fumaça.● Use ventilação e exhaustão para

remover fumo da zona respiratória.

● Turn power off before servicing.

● Desconectar el cable de ali-mentación de poder de la máquinaantes de iniciar cualquier servicio.

● Débranchez le courant avant l’entre-tien.

● Strom vor Wartungsarbeitenabschalten! (Netzstrom völlig öff-nen; Maschine anhalten!)

● Não opere com as tampas removidas.● Desligue a corrente antes de fazer

serviço.● Não toque as partes elétricas nuas.

● Do not operate with panel open orguards off.

● No operar con panel abierto oguardas quitadas.

● N’opérez pas avec les panneauxouverts ou avec les dispositifs deprotection enlevés.

● Anlage nie ohne Schutzgehäuseoder Innenschutzverkleidung inBetrieb setzen!

● Mantenha-se afastado das partesmoventes.

● Não opere com os paineis abertosou guardas removidas.

• Sales and Service through Subsidiaries and Distributors Worldwide •

Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com

• World's Leader in Welding and Cutting Products •

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