Welder 175T

8/6/2019 Welder 175T

1/36

SP-175T

OPERATORS MANUAL

IM797July, 2005

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 thought-

ful operation on your part. DO

NOT INSTALL, OPERATE OR

REPAIR THIS EQUIPMENT

WITHOUT READING THIS

MANUAL AND THE SAFETY

PRECAUTIONS CONTAINED

THROUGHOUT. And, most

importantly, think before you act

and be careful.

For use with machine Code Numbers 10985

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 2005 Lincoln Global Inc.

ISO 9001

CERTIFICATE NUMBER: 30273

Designed and Manufactured Under a

Quality Program Certified byABS Quality Evaluations, Inc.

to ISO 9001 Requirements.

QMS

ANSI RAB

RETURN TO MAIN MENU
http://immenu.pdf/

8/6/2019 Welder 175T

2/36

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-ventilatedareas 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 allowit to cool before refueling to prevent spilled fuelfrom vaporizing on contact with hot engine partsand igniting. Do not spill fuel when filling tank. Iffuel is spilled, wipe it up and do not start engineuntil fumes have been eliminated.

____________________________________________________

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

position and in good repair.Keep hands, hair, clothing and

tools away from V-belts, gears, fans and all other moving

parts 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 requir ing 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 or

magneto 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. Box

351040, 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 ARE

PERFORMED ONLY BY QUALIFIED INDIVIDUALS.

WARNING

Mar 95

ELECTRIC ANDMAGNETIC 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, and

welders having a pacemaker should consult their physician

before welding.

2.c. Exposure to EMF fields in welding may have other health

effects which are now not known.

2.d. All welders should use the following procedures in order to

minimize 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 as

possible 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

8/6/2019 Welder 175T

3/36

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 bare

skin 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 full

area 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 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 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 of

electrode holders connected to two welders because voltage

between the two can be the total of the open circuit voltage

of both welders.

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.

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

hazardous to health. Avoid breathing these

fumes and gases.When welding, keep

your head out of the fume. Use enough

ventilation and/or exhaust at the arc to keepfumes and gases away from the breathing zone. When

welding 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

products.

5.c. 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.d. Read and understand the manufacturers instructions for this

equipment and the consumables to be used, including the

material safety data sheet (MSDS) and follow your

employers safety practices. MSDS forms are available from

your welding distr ibutor or from the manufacturer.

5.e. Also see item 1.b.

Mar 95

8/6/2019 Welder 175T

4/36

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 manufacturersrecommendations.

8.c. Ground the equipment in accordance with the U.S. NationalElectrical Code and the manufacturers 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 Recommended

Safe 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 welding

area 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.

8/6/2019 Welder 175T

5/36

ivSAFETYiv

PRCAUTIONS DE SRETPour votre propre protection lire et observer toutes les instructions

et les prcautions de sret specifiques qui parraissent dans ce

manuel aussi bien que les prcautions de sret gnrales suiv-

antes:

Sret Pour Soudage A LArc1. Protegez-vous contre la secousse lectrique:

a. Les circuits llectrode et la pice sont sous tension

quand la machine souder est en marche. Eviter toujours

tout contact entre les parties sous tension et la peau nue

ou les vtements mouills. Porter des gants secs et sans

trous pour isoler les mains.

b. Faire trs attention de bien sisoler 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 couch pour lesquelles une grande

partie du corps peut tre en contact avec la masse.

c. Maintenir le porte-lectrode, la pince de masse, le cble

de soudage et la machine souder en bon et sr tat

defonctionnement.d.Ne jamais plonger le porte-lectrode dans leau pour le

refroidir.

e. Ne jamais toucher simultanment les parties sous tension

des porte-lectrodes connects deux machines souder

parce que la tension entre les deux pinces peut tre le

total de la tension vide des deux machines.

f. Si on utilise la machine souder comme une source de

courant pour soudage semi-automatique, ces precautions

pour le porte-lectrode sapplicuent aussi au pistolet de

soudage.

2. Dans le cas de travail au dessus du niveau du sol, se protger

contre les chutes dans le cas ou on recoit un choc. Ne jamaisenrouler le cble-lectrode autour de nimporte quelle partie

du corps.

3. Un coup darc peut tre plus svre quun coup de soliel,

donc:

a. Utiliser un bon masque avec un verre filtrant appropri

ainsi quun verre blanc afin de se protger les yeux du ray-

onnement de larc et des projections quand on soude ou

quand on regarde larc.

b. Porter des vtements convenables afin de protger la

peau de soudeur et des aides contre le rayonnement de

larc.

c. Protger lautre personnel travaillant proximit au

soudage laide dcrans appropris et non-inflammables.

4. Des gouttes de lait ier en fusion sont mises de larc de

soudage. Se protger avec des vtements de protection libres

de lhuile, tels que les gants en cuir, chemise paisse, pan-

talons sans revers, et chaussures montantes.

5. Toujours porter des lunettes de scurit dans la zone de

soudage. Utiliser des lunettes avec crans lateraux dans les

zones o lon pique le laitier.

6. Eloigner les matriaux inflammables ou les recouvrir afin de

prvenir tout risque dincendie d aux tincelles.

7. Quand on ne soude pas, poser la pince une endroit isol de

la masse. Un court-circuit accidental peut provoquer un

chauffement et un risque dincendie.

8. Sassurer que la masse est connecte le plus prs possible

de la zone de travail quil est pratique de le faire. Si on placela masse sur la charpente de la construction ou dautres

endroits loigns de la zone de travail, on augmente le risque

de voir passer le courant de soudage par les chaines de lev-

age, cbles de grue, ou autres circuits. Cela peut provoquer

des risques dincendie ou dechauffement des chaines et des

cbles jusqu ce quils se rompent.

9. Assurer une ventilation suffisante dans la zone de soudage.

Ceci est particulirement important pour le soudage de tles

galvanises plombes, ou cadmies ou tout autre mtal qui

produit des fumes toxiques.

10. Ne pas souder en prsence de vapeurs de chlore provenantdoprations de dgraissage, nettoyage ou pistolage. La

chaleur ou les rayons de larc peuvent ragir avec les vapeurs

du solvant pour produire du phosgne (gas fortement toxique)

ou autres produits irritants.

11. Pour obtenir de plus amples renseignements sur la sret,

voir le code Code for safety in welding and cutting CSA

Standard W 117.2-1974.

PRCAUTIONS DE SRET POUR

LES MACHINES SOUDER TRANSFORMATEUR ET REDRESSEUR

1. Relier la terre le chassis du poste conformement au code de

llectricit et aux recommendations du fabricant. Le dispositif

de montage ou la piece souder doit tre branch une

bonne mise la terre.

2. Autant que possible, Iinstallation et lentretien du poste seront

effectus par un lectricien qualifi.

3. Avant de faires des travaux linterieur de poste, la debranch-

er linterrupteur la boite de fusibles.

4. Garder tous les couvercles et dispositifs de sret leur

place.

Mar. 93

8/6/2019 Welder 175T

6/36

Thank Youfor 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:

WARNING

This 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, Claims

for 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 be

found 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 you

have recorded above. The code number is especially important when identifying the correct replacement parts.

vv

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 thenProduct Registration. Please complete the form and submit your registration.

8/6/2019 Welder 175T

7/36

vi

TABLE OF CONTENTS

Page

Installation .......................................................................................................Section ATechnical Specifications ........................................................................................A-1Safety Precautions.................................................................................................A-2

Identify and Locate Components...........................................................................A-2Select Suitable Location ........................................................................................A-3

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

Gun Installation......................................................................................................A-4Gas Connection.....................................................................................................A-4

Input Connections..................................................................................................A-5Line Cord Connection............................................................................................A-6230 Volt Input Connection .....................................................................................A-6

208 Volt Input Connection .....................................................................................A-6

Operation .........................................................................................................Section BSafety Precautions ................................................................................................B-1

General Description...............................................................................................B-2Design Features and Advantages .........................................................................B-2Welding Capability .................................................................................................B-2

Limitations..............................................................................................................B-2Controls and Settings ............................................................................................B-2

Welding Operations ...............................................................................................B-3Wire Loading ...................................................................................................B-3

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

Process Guidelines................................................................................................B-5

Chaning Over to Feed Other Wire Sizes ...............................................................B-6Welding with GMAW..............................................................................................B-6

Welding with FCAW...............................................................................................B-6

Overload Protection...............................................................................................B-6Learning to Weld....................................................................................................B-7Application Chart .................................................................................................B-18

Accessories .....................................................................................................Section CAccessories ...........................................................................................................C-1

Replacement Parts................................................................................................C-2

Maintenance ....................................................................................................Section DSafety Precautions ................................................................................................D-1Routine Maintenance.............................................................................................D-1

Gun and Cable Maintenance.................................................................................D-2Configuration of Components in Wire Feeding System.........................................D-2

Component Replacement Procedures ..................................................................D-3Changing Liner ......................................................................................................D-4

Gun Handle Parts..................................................................................................D-4

Troubleshooting..............................................................................................Section EHow to Use Troubleshooting Guide.......................................................................E-1Troubleshooting Guide.........................................................................E-2 THRU E-4

Wiring Diagrams..............................................................................................Section FSP-175T Wiring Diagram.......................................................................................F-1

SP-175T Parts..............................................................................P462 Series & P202-E

8/6/2019 Welder 175T

8/36

A-1

SP-175T

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-175TINPUT 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 Output

208V/60Hz 22 Amps Rated Output

Duty Cycle Amps Volts at Rated Amperes

30% Duty Cycle @ 230V/60Hz 130 2025% Duty Cycle @ 208V/60Hz 130 20

Welding Current Range Maximum Open Circuit Voltage Wire Speed RangeRated DC Output: 30 175 amps 33 50-400IPM (1.3-10.2m/min)

8/6/2019 Welder 175T

9/36

A-2 A-2INSTALLATION

SAFETY PRECAUTIONS

Read entire installation section before startinginstallation.

IDENTIFY AND LOCATECOMPONENTS

If you have not already done so, unpack the SP-175T

from its carton and remove all packing materialaround the SP-175T. Remove the following loose

items from the carton (see Figure A.1):

1. SP-175T

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. Sample Spool of L-56 .025 MIG Wire.

7. Adjustable mixed-Gas Regulator & Hose.

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

wire.

ELECTRIC SHOCK can kill. Only qualified personnel should perform

this installation.

Only personnel that have read and under-stood the SP-175T 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-175T 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

WELDINGAMPRANGE 25-125

6

7

SP-175T

8/6/2019 Welder 175T

10/36

A-3A-3 INSTALLATION

SELECT SUITABLE LOCATION

Locate the welder in a dry location where there is freecirculation of clean air into the louvers in the back and

out the front of the unit. A location that minimizes theamount of smoke and dirt drawn into the rear louvers

reduces the chance of dirt accumulation that can blockair passages and cause overheating.

STACKING

SP-175Ts 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 to

Figure A-3.

SP-175T

1 2

EWELDING AMP RANGE

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

SP-175T

8/6/2019 Welder 175T

11/36

A-4A-4 INSTALLATIONWork Cable Installation

Refer to Figure A.2.

1. Open the wire feed section door on the right side ofthe SP-175T.

2. Pass the end of the work cable that has the termi-nal lug with the smaller hole through the Work

Cable 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 workcables 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 the

connector block (1) to the negative () output termi-nal (2) and the work cable (3) to the positive (+) ter-

minal (4).

FIGURE A.4

NOTE: I f .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-175T

1. Refer to Figure A.2. Unplug the machine or turn

power 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 the

case front, behind the gas line.

3. Insert the connector on the gun conductor cablethrough the Gun Cable Access Hole (2) in the

SP-175T case front. Make sure the connector is allthe way in the brass connector block to obtain

proper gas flow. If the gun connector will not fullyinsert, unscrew the thumbscrew on the connectorblock a few turns. Rotate the connector so control

leads are on the underside and t ighten theThumbscrew on the connector block.

4. Connect the gun trigger control lead terminals to

the 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-175T may result if thisswitch shorts to the SP-175T welding output cir-cuit or is common to any electrical circuit otherthan the SP-175T trigger circuit.

GAS CONNECTION

When using the GMAW process, a cylinder of shield-ing gas, must be obtained. For more information about

selecting gas cylinders for use with the SP-175T, referto the ACCESSORIES section.

CAUTION

GUN INSTALLATION

As shipped from the factory, the SP-175T gun is readyto feed .023" .025" solid wire. If .030"-.035 (0.8 -.09mm) solid wire is to be used, change the contact tip

to the appropriate size. If .035 Flux-cored wire is to beused, change the contact tip and nozzle to the

appropiate type and orient the drive roll to the appro-priate groove size.

2

43

1

SP-175T

8/6/2019 Welder 175T

12/36

A-5A-5 INSTALLATION

SP-175T

2. With the cylinder securely installed, remove the

cylinder cap. Stand to one side away from the out-let and open the cylinder valve very slightly for an

instant. 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: Ifconnecting to 100% CO 2 cylinder, insertregulator adapter (provided with MIG Conversion

Kit) 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 for

CGA 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 power

input 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 earth

ground. Refer to Figure A.5.

FIGURE A.5

WARNING

Cylinder Valve

Gas Hose

Flow Regulator

WARNING

WARNING

POWER INPUTCABLE

GAS SOLENOIDINLET FITTING

8/6/2019 Welder 175T

13/36

A-6 A-6INSTALLATION

SP-175T

ELECTRICAL INPUT CONNECTION FORRATED OUTPUT

ELECTRIC SHOCK can kill.

Disconnect input power by

removing plug from receptaclebefore working inside SP-175T.

Use only grounded receptacle.

Do not touch electrically hotparts inside SP-175T.

Have qualified personnel do themaintenance and troubleshootingwork.

230 Volt Input Connection

The SP-175T is shipped from the factory connected

for 230 volt input power. If the welder has been recon-nected for 208 volt input power and 230 volt input is

desired, 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 control

P.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 remove

case 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 electrical

tape 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 applicable

local codes.

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

CONNECT TO HOT WIRESOF 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 75C 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

8/6/2019 Welder 175T

14/36

B-1B-1 OPERATION

Read entire operation section beforeoperating the SP-175T.

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-175T is a complete semiautomatic constant

voltage 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)

InnershieldNR-211-MP.

It is ideally suited for individuals having access to 230

or 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) and

the Innershield process (self-shielded flux-cored orFCAW). A convenient chart is mounted inside the wire

feed 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-175T can be used for welding mild steel using

the GMAW, single pass, process which requires asupply of shielding gas or it can be used for the self-

shielded, Innershieldprocess (FCAW).

OPERATIONAL FEATURES ANDCONTROLS

The SP-175T has the following controls as standard:

Power ON/OFF Switch, Voltage Control, Wire SpeedControl, Trigger Switch, and a Circuit Breaker.

DESIGN FEATURES ANDADVANTAGESG Reconnectable for 230 volt or 208 volt single phase

60 Hz input power.

G Cold electrode until gun trigger is pressed for anadded measure of safety.

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

G Quality wire drive with electronic overload protec-

tion.

G Quick Release idle roll pressure arm is easilyadjusted.

G Reversible, dual groove drive roll, shipped readyto feed .023"/.025" (0.6 mm) diameter wire. The

drive roll is easily reversed to feed .030" (0.8 mm)diameter solid wire and .035" (0.9 mm) flux-cored

diameter wire. Optional drive roll included in .045"(1.2 mm) Innershieldwelding kit must be installedto feed .045" (1.2 mm) f lux-cored wire.

SP-175T

SAFTEY PRECAUTIONS

8/6/2019 Welder 175T

15/36

B-2B-2 OPERATION

G No external shielding gas is required when used

with Lincoln Innershield .035 (0,9 mm) NR-211-MP electrode.

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

WELDING CAPABILITYThe SP-175T is rated at 130 amps, 20 volts, at 30%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-175T.

The SP-175T is not recommended for pipe thawing orTIG welding.

CONTROLS AND SETTINGSRefer to Figure B.1a.

1. Power ON/OFF Switch When the power is on thefan motor will run and air will

be exhausted out the louversin the front of the machine.

The welding output and wirefeeder remain off until the

gun trigger is pressed.

2. Voltage Control A 5-posi-

tion tap selector switch givesfull range adjustment of

power source output voltage.Do not switch while welding.

3. Wire Speed Cont ro l Controls the wire feed speed

from 50 400 in/min (1.2 10.2 m/min). The control can

be preset on the dial to the

setting specified on the SP-175T Application Chartlocated on the inside of thewire feed section door.

OFF

ON

ARC VOLTS

WIRE SPEED

Refer to Figure B.1b.

4. Circuit BreakerProtects machine from damage if

maximum output is exceeded. Button will extendout when tripped (Manual reset).Refer to Figure B.1b

5. Gun Trigger - Activates welding output, wire feed,and gas solenoid operation. Releasing the trigger

deactivates welding and simultaneously activates

the burnback function so that the welding wiredoes not stick in the weld puddle.

SP-175T

8/6/2019 Welder 175T

16/36

B-3B-3 OPERATION

FIGURE B.1a

FIGURE B.1b

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 feed

enclosure.

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 the

wire.

Note:When loading and removing the 8 Spools makesure that the wing nut (inside the wire spool spindle

hub) is turned 90 from the wire spool spindle lockingtab. If the wing nut is positioned in line with the locking

tab, 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 the

shaft 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 in

place 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.

SP-175 T

3

21

4

FIGURE B.2

FIGURE B.3

Wire Spool must be pushed all the way on the spindle so that thespindles 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 Shaft4" Wire Spool

Wing Nutand Spacer

To wire drive

SP-175T

8/6/2019 Welder 175T

17/36

B-4 B-4OPERATIONFriction Brake Adjustment

With wire spool installed on the spindle shaft and the

wing nut loose, turn the spool by hand while slowlytightening the wing nut until a light drag is felt. Tightenthe wing nut an additional 1/4 turn.

Note: When properly adjusted, the brake should pro-vide only enough drag to prevent overrun of the spool

and excess slack in the wire. Too much drag mayresult in wire feeding problems, and may cause pre-mature wear of wire drive system components.

Wire ThreadingRefer 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 the

wire size being used. See Maintenance section forfurther information.

2. Carefully detach the end of the wire from the

spool. 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 (2) and latch the springloaded pressure arm (1) in place. Rotate the spool

counterclockwise if required to take up extra slackin the wire.

6. The idle roll pressure adjustment wing nut is facto-ry set to approximately five full turns from where

the wing nut first engages the threads of the pres-sure arm (1). If feeding problems occur because

the wire is flattened excessively, turn the pressureadjustment counter-clockwise to reduce distortion

of the wire. Slightly less pressure may be requiredwhen using 0.023 0.025" (0,6 mm) wire. If the

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-175T ON (I).

9. Straighten the gun cable assembly.

10. Depress the gun trigger switch and feed weldingwire through the gun and cable. (Point gun away

from yourself and others while feeding wire.)Release gun trigger after wire appears at end of

gun.

11. Turn the SP-175T OFF (O).

12. Replace contact tip and gas nozzle.

13. Refer to Figure B-6. Cut the wire off 3/81/2 (1013 mm) from the end of the tip. The SP-175T is

now ready to weld.

WARNING

FIGURE B.4

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

FIGURE B.5

Gun Handle

Gas Diffuser/Contact Tip

Gas Nozzle

1

2

3

4

5

SP-175T

8/6/2019 Welder 175T

18/36

B-5B-5 OPERATION

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 setting

the SP-175T 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, if

required, 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 metal

to be welded. Work clamp must make good elec-trical contact to the workpiece. The workpiecemust also be grounded as stated in Arc Welding

Safety Precautions in the beginning of this manu-al.

7. Position gun over joint. End of wire may be lightly

touching the work.

8. Lower welding helmet, close gun trigger, and

begin 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 then

pull 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 gun

trigger to release gas pressure, and turn off theSP-175T.

Cleaning Tip And NozzleClean the contact tip and nozzle to avoid arc bridgingbetween the nozzle and contact tip which can result in

a shorted nozzle, poor welds and an overheated gun.Hint: Anti-stick spray or gel, available from a welding

supply distributor, may reduce buildup and aid in spat-ter removal.

PROCESS GUIDELINES

The SP-175T can be used for welding mild steel using

the GMAW, single pass, process which requires asupply of shielding gas or it can be used for the self-

shielded, Innershieldprocess (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 L-56 mild-steel weldingwire, supplied on 12-1/2 lb (5.7 kg) spools. The blend-

ed gas is recommended for welding on heavier steel,14 gauge (2.0 mm), for example.

The recommended electrode for the self-shielded

process is Lincoln Innershield NR-211-MP on 10 lb(4.5 kg) spools. This electrode is available as .035"(0.9 mm) and .045" (1.2 mm) NR-211-MP for all posi-

tion welding of 18 gauge (1.2 mm) through 5/16" (8.0mm) steel. Thickness of 1/4" (6.4 mm) and 5/16" (7.9

mm) require multiple passes. both wire sizes can alsobe used for the welding of galvanized coated sheetmetal.

Contact Tip

Wire Electrode

FIGURE B.7

WORKPIECE

GUN CABLE

ARC

WORK CLAMP

SP-175T

3/8"1/2"(10-13mm) ContactTip to Work Distance(CTWD)

8/6/2019 Welder 175T

19/36

B-6

SP-175T

B-6 OPERATIONThe SP-175T is suitable for .035" aluminum wire and

.023".035" stainless wire. Refer to Table B.1 for rec-ommended procedure settings. (Requires K586-1

Deluxe Gas Regulator 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-175TWELDING PROCEDURES

CHANGING MACHINE OVER TOFEED OTHER WIRE SIZES

The SP-175T is shipped from the factory ready to feed0.023.025" (0.9 mm) diameter wire. To operate the

SP-175T with other sizes of wire, it maybe necessaryto change the contact tip, drive roll and gun-liner con-figuration. For component configuration and place-

ment. Refer to the MAINTENANCE section on theseprocedures.

WELDING WITH GMAW (MIG)

Shielding GasWhen using the GMAW process, install the gas regu-lator and hose.

1. For CO2, an optional adapter is required. Openthe cylinder valve very slowly. For argon-mixedgas, open cylinder valve slowly a fraction of a turn.

When the cylinder pressure gauge pointer stopsmoving, 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

position or in a drafty location.

3. Keep the cylinder valve closed, except when using

the SP-175T. 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-175T.

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 the

polarity.

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

OVERLOAD PROTECTION

Output OverloadThe SP-175T is equipped with a circuit breaker which

protects the machine from damage if a severe over-load occurs. The circuit breaker button will extend outwhen tripped. The circuit breaker must be manually

reset.

Thermal ProtectionThe SP-175T has a rated output duty cycle of 30%. If

the 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-175T and does not require user inter-

vention. The fan continues to run during cooling.

Electronic Wire Drive Motor ProtectionThe SP-175T has built-in protection for wire drive

motor 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+ 16 ga 14 ga 12 ga 10 ga

.030 Dia 98% Argon/ A-3 C-6 D-7.5 D-7.5308L Stainless 2% OxygenSteel Wire

8/6/2019 Welder 175T

20/36

B-7B-7 APPLICATION CHART

SP-175T

8/6/2019 Welder 175T

21/36

C-1C-1 ACCESSORIES

OPTIONAL ACCESSORIES

1. K549-1 .035" (0.9 mm) Innershield Welding Kit Includes a contact tip, a gasless nozzle and a.030/.035 (.8/.9mm) cable liner to permit the

Magnum 100L gun and cable to use .035" (0.9mm) diameter flux-cored electrode. The fitting on

the end of the liner is stenciled with the maximum

rated 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 on

the end of the liner is stenciled with the maximumrated wire size (.045"/1.2 mm). Also included is a

10 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 Knurled

drive 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 for

mounting a single gas cylinder. Has front castersand large rear wheels. Handle height is easily

adjustable. Bottom tray provided for tools andaccessories. Easy assembly required; takes lessthan 15 minutes.

6. K586-1 Deluxe Adjustable Gas Regulator &Hose KitAccommodates CO2 or mixed Gas Cylinders.

SP-175T

8/6/2019 Welder 175T

22/36

C-2 C-2ACCESSORIESINNERSHIELD (FCAW)CONVERSION

Several changes are needed to convert the unit for

operation 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 should

be made using the contents of this kit:

1. Change the output polarity to DC(). See Work

Cable Installation in Installation section for details.

2. Install proper drive roll for the wire size selected.See Changing Drive Roll in Maintenance section

for details.

3. Install the proper gun liner (Note 1) and tip for thewire size selected. See Component Replacementin Maintenance 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.

(Note 1): The factory installed gun liner will feed.025 - .035 ( 0.6 - 0.9mm) wire.

REPLACEMENT PARTS

Complete Gun and Cable AssemblyL8311-6 (K530-4)

Contact Tip .025 (0.6 mm)KP2039-1B1




Contact Tip-Tapered .025 (0.6 mm)KP2052-1B1



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-175T

8/6/2019 Welder 175T

23/36

MAINTENANCE

SAFETY PRECAUTIONS

ELECTRIC SHOCK can kill.

Disconnect input power by removingplug from receptacle before workinginside SP-175T. Use only groundedreceptacle. Do not touch electricallyhot parts inside SP-175T.

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 with

low pressure air at regular intervals to eliminate excessivedirt and dust build-up on interval parts.

WIRE FEED COMPARTMENT

1. When necessary, vacuum accumulated dirt from gearbox

and wire feed section.

2. Occasionally inspect the incoming guide tube and clean

inside diameter if necessary.

3. Motor and gearbox have lifetime lubrication and requireno maintenance.

FAN MOTOR

Has lifetime lubrication requires no maintenance.

WIRE REEL SPINDLE

Requires no maintenance. Do not lubricate shaft.

D-1D-1 MAINTENANCE

WARNING

SP-175T

8/6/2019 Welder 175T

24/36

D-2D-2 MAINTENANCEGUN AND CABLEMAINTENANCE

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-cored

wire. 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 the

cable 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 further

dirt 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 may

be 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 size

contact tip for the electrode being used (wire size isstenciled on the side of the contact tip) and screw it

snugly 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 the

Innershieldprocess, the gasless nozzle should bescrewed onto the diffuser.

5. To remove gun tube from gun, remove gas nozzle

or 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 as

far 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 is

perpendicular 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 cable

connector. 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 KP1937-3 KP665-035SP-175T .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 KP665-035 - Use Large groove

Innershield Welding Kit .035 (0.9mm) .(0.8-0.9mm)

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

Innershield Welding Kit .045 (1.2mm) .035-.045

(0.9-1.2mm)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-175T.

* 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-175T

8/6/2019 Welder 175T

25/36

D-3D-3 MAINTENANCE

COMPONENTREPLACEMENTPROCEDURES

CHANGING THE CONTACT TIP

1. Refer to Figure D.2. Remove the gas nozzle from

the gun by unscrewing counter-clockwise.

2. Remove the existing contact tip from the gun by

unscrewing counter-clockwise.

3. Insert and hand tighten desired contact tip.

4. Replace gas nozzle.

CHANGING DRIVE ROLL (Refer to Figure D.1)

The drive roll has two grooves; one for .023" .025"

(0.6 mm) solid steel electrode and a larger groove for.030" (0.8 mm) solid and .035" (0.9 mm) flux-cored

steel electrode. As shipped, the drive roll is installed inthe .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 per

instructions in Installation section.

2. Release the spring-loaded pressure arm (1) and liftthe idle roll arm away (2) from the drive roll (3).

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 set

screw 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" (2.0

mm) 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 on

the wire. Make certain the set screw is located onthe flat portion of the shaft and tighten.

Figure D.1

CAUTION

3

2

1

SP-175T

8/6/2019 Welder 175T

26/36

D-4 D-4MAINTENANCE

8. Screw the gas diffuser onto the end of the gun tube

and securely tighten.

9. Replace the contact tip and nozzle.

GUN HANDLE PARTS

The gun handle consists of two halves that are heldtogether with a collar on each end. To open up the

handle, 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 and

give the screwdriver a sharp blow to turn the collarpast an internal locking rib. See Figure D-3.

Figure D-3

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

Counter-clockwise

SP-175T

CHANGING LINER

NOTICE: The variation in cable lengths prevents the

interchangeability 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 by

unscrewing 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.

5. Insert a new untrimmed liner into the connector endof the cable. Be sure the liner bushing is stenciled

appropriately 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 then

trim the liner to the length shown in the Figure D.2.Remove any burrs from the end of the liner.

8/6/2019 Welder 175T

27/36

E-1TROUBLESHOOTINGE-1

SP-175T

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 you

locate 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 symptoms

that 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 contribute

to the machine symptom.

Step 3. RECOMMENDED COURSE OF ACTIONThis column provides a course of action for the

Possible 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 your

local 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 Electrical

Shock, please observe all safety notes and precautions detailed throughout this manual.__________________________________________________________________________

WARNING

8/6/2019 Welder 175T

28/36

E-2 E-2TROUBLESHOOTING

PROBLEMS(SYMPTOMS)

Major physical or electrical damageis evident.

No wire feed, weld output or gas

flow 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 Field

Service Facility.

1. Make sure correct voltage is

applied to the machine. SeeInstallation section, Electrical

Connections.

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 your

LOCAL AUTHORIZED LINCOLN ELECTRIC FIELD SERVICE FACILITY for assistance before you proceed.

CAUTION

SP-175T

Observe all Safety Guidelines detailed throughout this manual

8/6/2019 Welder 175T

29/36

E-3E-3 TROUBLESHOOTING

PROBLEMS(SYMPTOMS)

No wire feed when gun trigger ispulled. Fan runs, gas flows and

machine has correct open circuitvoltage (33 vcd maximum)weld

output.

POSSIBLECAUSE

1. If the wire drive motor is runningmake sure that the correct drive

rolls are installed in the machine.

2. Check for clogged cable liner orcontact tip.

3. Check for proper size cable linerand contact tip.


Contact your local Lincoln

Authorized Field Service Facility.

FEEDING PROBLEMS



CAUTION

PROBLEMS(SYMPTOMS)

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

POSSIBLE AREAS OFMISADJUSTMENT(S)

1. Check gas supply, flow regulatorand gas hoses.

2. Check gun connection tomachine for obstruction or leaky

seals.


Contact your local LincolnAuthorized Field Service Facility.

GAS FLOW PROBLEMS

SP-175T


8/6/2019 Welder 175T

30/36

E-4E-4 TROUBLESHOOTING



CAUTION

PROBLEMS(SYMPTOMS)

Arc is unstablePoor starting

POSSIBLECAUSE

1. Check for correct input voltageto machine. See Installation sec-

tion, Electrical InputConnections.

2. Check for proper electrode

polarity for process.

3. Check gun tip for wear or dam-

age and proper sizeReplace.

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

5. Check work cable for loose or

faulty connections.

6. Check gun for damage or

breaks.

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

8. Check liner for proper size.


Contact your local Lincoln

Authorized Field Service Facility.

WELDING PROBLEMS

SP-175T


8/6/2019 Welder 175T

31/36

F-1F-1 WIRING DIAGRAMS

NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. Thespecific diagram for a particular code is pasted inside the machine on one of the enclosure panels.

SP-175T

SP-175TWIRINGDIAG

RAM

8/6/2019 Welder 175T

32/36

NOTES

SP-175T

8/6/2019 Welder 175T

33/36

NOTES

SP-175T

8/6/2019 Welder 175T

34/36SP-170T

WARNING

AVISO DEPRECAUCION

ATTENTION

WARNUNG

ATENO

Spanish

French

German

Portuguese

Japanese

Chinese

Korean

Arabic

READ AND UNDERSTAND THE MANUFACTURERS INSTRUCTION FOR THIS EQUIPMENT AND THE CONSUMABLES TO BEUSED AND FOLLOW YOUR EMPLOYERS 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 UNFALLVERHTUNGSVORSCHRIFTEN DES ARBEITGEBERS SIND EBENFALLS ZU BEACHTEN.

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

G Insulate yourself from work andground.

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

G Aislese del trabajo y de la tierra.

G Ne laissez ni la peau ni des vte-ments mouills entrer en contactavec des pices sous tension.

G Isolez-vous du travail et de la terre.

G Berhren Sie keine stromfhrendenTeile oder Elektroden mit IhremKrper oder feuchter Kleidung!

G Isolieren Sie sich von denElektroden und dem Erdboden!

G No toque partes eltricas e elec-trodos com a pele ou roupa molha-

da.G Isole-se da pea e terra.

G Keep flammable materials away.

G Mantenga el material combustiblefuera del rea de trabajo.

G Gardez lcart de tout matrielinflammable.

G Entfernen Sie brennbarres Material!

G Mantenha inflamveis bem guarda-dos.

G Wear eye, ear and body protection.

G Protjase los ojos, los odos y elcuerpo.

G Protgez vos yeux, vos oreilles etvotre corps.

G Tragen Sie Augen-, Ohren- und Kr-perschutz!

G Use proteo para a vista, ouvido ecorpo.

8/6/2019 Welder 175T

35/36SP-170T

WARNING

AVISO DEPRECAUCION

ATTENTION

WARNUNG

ATENO

Spanish

French

German

Portuguese

Japanese

Chinese

Korean

Arabic

LEIA E COMPREENDA AS INSTRUES DO FABRICANTE PARA ESTE EQUIPAMENTO E AS PARTES DE USO, E SIGA ASPRTICAS DE SEGURANA DO EMPREGADOR.

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

remove fumes from breathing zone.

G Los humos fuera de la zona de res-piracin.

G Mantenga la cabeza fuera de loshumos. Utilice ventilacin oaspiracin para gases.

G Gardez la tte lcart des fumes.G Utilisez un ventilateur ou un aspira-

teur pour ter les fumes des zonesde travail.

G Vermeiden Sie das Einatmen vonSchweibrauch!

G Sorgen Sie fr gute Be- undEntlftung des Arbeitsplatzes!

G Mantenha seu rosto da fumaa.G Use ventilao e exhausto para

remover fumo da zona respiratria.

G Turn power off before servicing.

G Desconectar el cable de ali-mentacin de poder de la mquinaantes de iniciar cualquier servicio.

G Dbranchez le courant avant lentre-tien.

G Strom vor Wartungsarbeitenabschalten! (Netzstrom vllig ff-nen; Maschine anhalten!)

G No opere com as tampas removidas.G Desligue a corrente antes de fazer

servio.G No toque as partes eltricas nuas.

G Do not operate with panel open orguards off.

G No operar con panel abierto oguardas quitadas.

G Noprez pas avec les panneauxouverts ou avec les dispositifs deprotection enlevs.

G Anlage nie ohne Schutzgehuseoder Innenschutzverkleidung inBetrieb setzen!

G Mantenha-se afastado das partesmoventes.

G No opere com os paineis abertosou guardas removidas.

8/6/2019 Welder 175T

36/36

Welder 175T

Documents

Transcript of Welder 175T