flextec tm 650 - lincoln electric

Operator’s Manual

FLEXTEC TM 650

Register your machine: www.lincolnelectric.com/register

Authorized Service and Distributor Locator: www.lincolnelectric.com/locator

IM10217-A | Issue D ate Sep-16

© Lincoln Global, Inc. All Rights Reserved.

For use with machines having Code Numbers:

12391, 12623

Save for future reference

Date Purchased

Code: (ex: 10859)

Serial: (ex: U1060512345)

THANK YOU FOR SELECTING A QUALITY PRODUCT BY LINCOLN ELEC TRIC.

PLEASE EXAMINE CARTON AND EQUIPMENT FORDAMAGE IMMEDIATELY

When this equipment is shipped, title passes to the purchaserupon receipt by the carrier. Consequently, claims for materialdamaged in shipment must be made by the purchaser against thetransportation company at the time the shipment is received.

SAFETY DEPENDS ON YOU

Lincoln arc welding and cutting equipment is designed and builtwith safety in mind. However, your overall safety can be increasedby proper installation ... and thoughtful operation on your part. DO NOT INSTALL, OPERATE OR REPAIR THIS EQUIPMENT WITHOUT READING THIS MANUAL AND THE SAFETYPRECAUTIONS CONTAINED THROUGHOUT. And, most importantly,think before you act and be careful.

This statement appears where the information must be followedexactly to avoid serious personal injury or loss of life.

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

KEEP YOUR HEAD OUT OF THE FUMES.

DON’T get too close to the arc.Use corrective lenses if necessaryto stay a reasonable distanceaway from the arc.

READ and obey the Safety DataSheet (SDS) and the warning labelthat appears on all containers ofwelding materials.

USE ENOUGH VENTILATION orexhaust at the arc, or both, tokeep the fumes and gases from your breathing zone and the general area.

IN A LARGE ROOM OR OUTDOORS, natural ventilation may beadequate if you keep your head out of the fumes (See below).

USE NATURAL DRAFTS or fans to keep the fumes away from your face.

If you de velop unusual symptoms, see your supervisor. Perhaps the welding atmosphere and ventilation system should be checked.

WEAR CORRECT EYE, EAR & BODY PROTECTION

PROTECT your eyes and face with welding helmetproperly fitted and with proper grade of filter plate(See ANSI Z49.1).

PROTECT your body from welding spatter and arcflash with protective clothing including woolenclothing, flame-proof apron and gloves, leatherleggings, and high boots.

PROTECT others from splatter, flash, and glarewith protective screens or barriers.

IN SOME AREAS, protection from noise may be appropriate.

BE SURE protective equipment is in good condition.

Also, wear safety glasses in work areaAT ALL TIMES.

SPECIAL SITUATIONS

DO NOT WELD OR CUT containers or materials which previouslyhad been in contact with hazardous substances unless they areproperly cleaned. This is extremely dangerous.

DO NOT WELD OR CUT painted or plated parts unless specialprecautions with ventilation have been taken. They can releasehighly toxic fumes or gases.

Additional precautionary measures

PROTECT compressed gas cylinders from excessive heat,mechanical shocks, and arcs; fasten cylinders so they cannot fall.

BE SURE cylinders are never grounded or part of an electrical circuit.

REMOVE all potential fire hazards from welding area.

ALWAYS HAVE FIRE FIGHTING EQUIPMENT READY FORIMMEDIATE USE AND KNOW HOW TO USE IT.

WARNING

CAUTION

Safety 01 of 04 - 5/16/2018

SECTION A:WARNINGS

CALIFORNIA PROPOSITION 65 WARNINGS

WARNING: Breathing diesel engine exhaustexposes you to chemicals known to the Stateof California to cause cancer and birth defects,

or other reproductive harm.• Always start and operate the engine in a

well-ventilated area.• If in an exposed area, vent the exhaust to the outside.• Do not modify or tamper with the exhaust system. • Do not idle the engine except as necessary.For more information go to www.P65 warnings.ca.gov/diesel

WARNING: This product, when used for welding or

cutting, produces fumes or gases which contain

chemicals known to the State of California to cause

birth defects and, in some cases, cancer. (California

Health & Safety Code § 25249.5 et seq.)

WARNING: Cancer and Reproductive Harm

www.P65warnings.ca.gov

ARC WELDING CAN BE HAZARDOUS. PROTECTYOURSELF AND OTHERS FROM POSSIBLE SERIOUSINJURY OR DEATH. KEEP CHILDREN AWAY. PACEMAKER WEARERS SHOULD CONSULT WITHTHEIR DOCTOR BEFORE OPERATING.

Read and understand the following safety highlights. Foradditional safety information, it is strongly recommended that you purchase 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 available from 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.

FOR ENGINE POWEREDEQUIPMENT.

1.a. Turn the engine off before troubleshootingand maintenance work unless themaintenance work requires it to be running.

1.b. Operate engines in open, well-ventilated areas or vent the engineexhaust fumes outdoors.

1.c. Do not add the fuel near an open flame weldingarc or when the engine is running. Stop theengine and allow it to cool before refueling toprevent spilled fuel from vaporizing on contact

with hot engine parts and igniting. Do not spill fuel when fillingtank. If fuel is spilled, wipe it up and do not start engine untilfumes 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 orrepairing equipment.

1.e. In some cases it may be necessary to remove safety guards toperform required maintenance. Remove guards only whennecessary and replace them when the maintenance requiringtheir removal is complete. Always use the greatest care whenworking near moving parts.

1.f. Do not put your hands near the engine fan. Do not attempt tooverride the governor or idler by pushing on the throttle controlrods while the engine is running.

1.g. To prevent accidentally starting gasoline engines while turningthe engine or welding generator during maintenance work,disconnect the spark plug wires, distributor cap or magneto wireas appropriate.

1.h. To avoid scalding, do not remove the radiatorpressure cap when the engine is hot.

ELECTRIC ANDMAGNETIC FIELDS MAYBE DANGEROUS

2.a. Electric current flowing through any conductorcauses 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 physicianbefore welding.

2.c. Exposure to EMF fields in welding may have other health effectswhich 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 and workcables. If the electrode cable is on your right side, thework cable should also be on your right side.

2.d.4. Connect the work cable to the workpiece as close as pos-sible to the area being welded.

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

SAFETY

Safety 02 of 04 - 5/16/2018

ELECTRIC SHOCK CAN KILL.

3.a. The electrode and work (or ground) circuits areelectrically “hot” when the welder is on. Donot 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 areaof physical contact with work and ground.

In addition to the normal safety precautions, if

welding must be performed under electrically

hazardous conditions (in damp locations or while

wearing wet clothing; on metal structures such as

floors, gratings or scaffolds; when in cramped

positions such as sitting, kneeling or lying, if there

is a high risk of unavoidable or accidental contact

with the workpiece or ground) use the following

equipment:

• 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 weldinggun are also electrically “hot”.

3.d. Always be sure the work cable makes a good electricalconnection with the metal being welded. The connection shouldbe 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 electrodeholders connected to two welders because voltage between thetwo can be the total of the open circuit voltage of bothwelders.

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 It ems 6.c. and 8.

ARC RAYS CAN BURN.

4.a. Use a shield with the proper filter and cover plates to protect youreyes from sparks and the rays of the arc when welding orobserving open arc welding. Headshield and filter lens shouldconform to ANSI Z87. I standards.

4.b. Use suitable clothing made from durable flame-resistant materialto protect your skin and that of your helpers from the 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.

FUMES AND GASESCAN BE DANGEROUS.

5.a. Welding may produce fumes and gaseshazardous to health. Avoid breathing thesefumes and gases. When welding, keep your head out of the fume.Use enough ventilation and/or exhaust at the arc to keep fumesand gases away from the breathing zone. When welding

hardfacing (see instructions on container or SDS)

or on lead or cadmium plated steel and other

metals or coatings which produce highly toxic

fumes, keep exposure as low as possible and

within applicable OSHA PEL and ACGIH TLV limits

using local exhaust or mechanical ventilation

unless exposure assessments indicate otherwise.

In confined spaces or in some circumstances,

outdoors, a respirator may also be required.

Additional precautions are also required when

welding

on galvanized steel.

5. b. The operation of welding fume control equipment is affected byvarious factors including proper use and positioning of theequipment, maintenance of the equipment and the specificwelding procedure and application involved. Worker exposurelevel should be checked upon installation and periodicallythereafter to be certain it is within applicable OSHA PEL andACGIH TLV limits.

5.c. Do not weld in locations near chlorinated hydrocarbon vaporscoming from degreasing, cleaning or spraying operations. Theheat and rays of the arc can react with solvent vapors to formphosgene, a highly toxic gas, and other irritating products.

5.d. Shielding gases used for arc welding can displace air and causeinjury or death. Always use enough ventilation, especially inconfined areas, to insure breathing air is safe.

5.e. Read and understand the manufacturer’s instructions for thisequipment and the consumables to be used, including theSafety Data Sheet (SDS) and follow your employer’s safetypractices. SDS forms are available from your weldingdistributor or from the manufacturer.

5.f. Also see item 1.b.

SAFETY

Safety 03 of 04 - 5/16/2018

WELDING AND CUTTINGSPARKS CAN CAUSEFIRE OR EXPLOSION.

6.a. Remove fire hazards from the welding area. Ifthis is not possible, cover them to prevent the welding sparksfrom starting a fire. Remember that welding sparks and hotmaterials from welding can easily go through small cracks andopenings to adjacent areas. Avoid welding near hydraulic lines.Have a fire extinguisher readily available.

6.b. Where compressed gases are to be used at the job site, specialprecautions should be used to prevent hazardous situations.Refer to “Safety in Welding and Cutting” (ANSI Standard Z49.1)and the operating information for the equipment being used.

6.c. When not welding, make certain no part of the electrode circuit istouching the work or ground. Accidental contact can causeoverheating 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 procedures will not cause flammable or toxic vapors from substances inside.They can cause an explosion even though they have been“cleaned”. For information, purchase “Recommended SafePractices for the Preparation for Welding and Cutting ofContainers and Piping That Have Held Hazardous Substances”,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 oil freeprotective garments such as leather gloves, heavy shirt, cufflesstrousers, high shoes and a cap over your hair. Wear ear plugswhen welding out of position or in confined places. Always wearsafety glasses with side shields when in a welding area.

6.g. Connect the work cable to the work as close to the welding areaas practical. Work cables connected to the building framework orother locations away from the welding area increase thepossibility of the welding current passing through lifting chains,crane cables or other alternate circuits. This can create firehazards or overheat lifting chains or cables until they fail.

6.h. Also see item 1.c.

6.I. Read and follow NFPA 51B “Standard for Fire Prevention DuringWelding, Cutting and Other Hot Work”, available from NFPA, 1Batterymarch Park, PO box 9101, Quincy, MA 022690-9101.

6.j. Do not use a welding power source for pipe thawing.

CYLINDER MAY EXPLODE IFDAMAGED.

7.a. Use only compressed gas cylinders containingthe correct shielding gas for the process usedand properly operating regulators designed forthe gas and pressure used. All hoses, fittings,etc. should be suitable for the application andmaintained in good condition.

7.b. Always keep cylinders in an upright position securely chained toan undercarriage or fixed support.

7.c. Cylinders should be located:

• Away from areas where they may be struck or subjectedto physical damage.

• A safe distance from arc welding or cutting operationsand any 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 hand tightexcept when the cylinder is in use or connected for use.

7.g. Read and follow the instructions on compressed gas cylinders,associated equipment, and CGA publication P-l, “Precautions forSafe Handling of Compressed Gases in Cylinders,” available fromthe Compressed Gas Association, 14501 George Carter WayChantilly, VA 20151.

FOR ELECTRICALLYPOWERED EQUIPMENT.

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

8.b. Install equipment in accordance with the U.S. National ElectricalCode, all local codes and the manufacturer’s recommendations.

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

Refer to

http://www.lincolnelectric.com/safety

for additional safety information.

SAFETY

Safety 04 of 04 - 5/16/2018

Page

Installation .......................................................................................................Section A Technical Specifications ........................................................................................A-1 Welding Process, Physical Dimensions.................................................................A-2 Safety Precautions.................................................................................................A-3 VRD™ (Voltage Reduction Device) ..............................................................................A-3 Select Suitable Location..................................................................................A-3 Lifting...............................................................................................................A-3 Stacking ..........................................................................................................A-3 Environmental Limitations ...............................................................................A-3 Input and Grounding Connections ..................................................................A-3 High Frequency Protection..............................................................................A-3 High Temperature Operation.................................................................................A-3 Input Connection ..................................................................................................A-4 Input Fuse and Supply Wire Considerations .........................................................A-4 Input Voltage Selection..........................................................................................A-4 Cable Connections ................................................................................................A-5 Recommended Electrode and Work Cable for Arc Welding..................................A-6 Output Cable Guidelines .......................................................................................A-6 Control Cable Connections, Paralleling.................................................................A-7 Connection Diagrams Flextec 650 to Wire Feeders and Tractor...........A-8 thru A-12________________________________________________________________________

Operation .........................................................................................................Section B Safety Precautions ................................................................................................B-1 Graphic Symbols............................................................................................B-1, B-2 Product Description ..............................................................................................B-2 Duty Cycle .............................................................................................................B-2 Design Features ....................................................................................................B-2 Recommended Processes and Equipment ...........................................................B-3 Case Front Controls...............................................................................................B-4 Case Back Controls ...............................................................................................B-5 Internal Controls ....................................................................................................B-6 Power-Up Sequence..............................................................................................B-7 Common Welding Procedures, Weld Controls and Displays.................B-7 thru B-10_______________________________________________________________________

Accessories .....................................................................................................Section C Options / Accessories............................................................................................C-1________________________________________________________________________

Maintenance ....................................................................................................Section D Safety Precautions ................................................................................................D-1 Visual Inspection ...................................................................................................D-1 Routine Maintenance ............................................................................................D-1 Periodic Maintenance............................................................................................D-1________________________________________________________________________

Section E ..............................................................................................Troubleshooting How to Use Troubleshooting Guide.......................................................................E-1 Troubleshooting Guide ..........................................................................................E-2 Error Codes....................................................................................................E-3, E-4________________________________________________________________________

Wiring Diagram and Dimension Print ..............................................................Section F________________________________________________________________________

Parts List ........................................................................................................parts.lincolnelectric.com Content/details may be changed or updated without notice. For most current Instruction Manuals, go to parts.lincolnelectric.com.________________________________________________________________________

6

TABLE OF CONTENTSFLEXTECTM 650

7

NOTESFLEXTECTM 650

A-1

INSTALLATIONFLEXTECTM 650

TECHNICAL SPECIFICATIONS - FLEXTEC™ 650

RATED OUTPUT*

POWER SOURCE-INPUT VOLTAGE AND CURRENTModel

K3060-3

Duty Cycle

60% rating100% rating

Volts at Rated Amperes

44V

34V

44V

Amperes

750

650

750

650

750

650

750

650

750

650

750

650

Duty Cycle

60%

100%

60%

100%

60%

100%

60%

100%

60%

100%

60%

100%

Process

GMAW (CV)

GTAW (CC)

SMAW (CC)

FCAW-GS (CV)

FCAW-SS (CV)

SAW (CV)

Input Amperes

70 / 58 / 46

57 / 47 / 38

Idle Power(W)

230 MAX.( Fan On)100 MAX. (Fan Off)

Power Factor @Rated Output

88%

Input Voltage ± 10%

380 / 460 / 575 / 3 / 50 / 60

(1) Cord and Fuse Sizes based upon the U.S. National Electric Code and maximum output for 40°C (104°) ambient.(2) Also called “inverse time” or “thermal/magnetic” circuit breakers; circuit breakers that have a delay in tripping action that decreases as the

magnitude of current increases.(3) Type SJ cord or similar in 30°C ambient.

VOLTAGE50/60Hz

380/3/50460/3/60575/3/60

MaximumInput

Amperes

70 A58 A46 A

Cord Size(3)AWG SIZES

(mm)

4(25)4(25)6(16)

Fuse (Super Lag) orBreaker Size (2)

908060

COPPER GROUNDINGCONDUCTORAWG (mm2)

8 (10)8 (10)10 (6)

Type 75°C CopperWire in Conduit

AWG (mm2)

4(25)6(16)8 (10)

RECOMMENDED INPUT WIRE AND FUSE SIZES (1)

**

********

* Output is limited to 600A / 100% and 700A / 60% when used with K3091-1 Multi-Process Switch.

A-2


PHySICAL DIMENSIONS

TEMPERATURE RANGES

HEIGHT

21.8 in (554 mm)

MODEL

K3060-3

WIDTH

16.14 in (410 mm)

DEPTH

29.33 in (745 mm)

WEIGHT

165lbs (74.8kg)*

OPERATING TEMPERATURE RANGEEnvironmentally Hardened: 14°F to 131°F (-10°C to 55°C**)

STORAGE TEMPERATURE RANGEEnvironmentally Hardened: -40°F to 185°F (-40°C to 85°C)

PROCESS

GMAW (CV)GTAW (CC)SMAW (CC)

FCAW-GS (CV)FCAW-SS (CV)

SAW (CV)

OUTPUT RANGE (AMPERES)

40-75010-75015-75040-75040-75040-750

OCV (Uo)

653065656565

WELDING PROCESS

IP23 180º(H) Insulation Class* Weight does not include input cord.** Power Source is de-rated at temperatures above 40C.

"A" LEAD POSITION

380 VoltReconnect

460 VoltReconnect

575 VoltReconnect

VAC INPUT LIMITS (VOLTS)

Low LimitHigh Limit

Low LimitHigh Limit

Low LimitHigh Limit

VRD Disabled

340 Vac420 Vac

390 Vac505 Vac

485 Vac620 Vac

VRD Enabled

340 Vac455 Vac

390 Vac520 Vac

485 Vac655 Vac

AUXILIARy RECONNECT INPUT RANGES

A-3


VRD™ (VOLTAGE REDUCTION DEVICE)The VRD™ feature provides additional safety in the CC-Stick mode. The VRD™ reduces the OCV (Open CircuitVoltage) at the welding output terminals while not welding toless than 35VDC peak. The VRD™ requires that the welding cable connections bekept in good electrical condition because poor connectionswill contribute to poor starting. Having good electrical con-nections also limits the possibility of other safety issuessuch as heat-generated damage, burns and fires.The machine is shipped with VRD™ “Disabled”. The VRD™function can be disabled or enabled via dip switches on thecontrol P.C. board. Dip switch setting will differ dependingon input voltage.The control board and dip switches can be accessed byremoving the case top and side as shown in the OperationSection figure B.3.SELECT SUITABLE LOCATIONLOCATION AND VENTILATION FOR COOLINGPlace the welder where clean cooling air can freely circu-late in through the rear louvers and out through the casesides. Dirt, dust, or any foreign material that can bedrawn into the welder should be kept at a minimum.Failure to observe these precautions can result in exces-sive operating temperatures and nuisance shutdowns.

This equipment is for industrial use only and it is notintended for use in residential locations where theelectrical power is provided by the public low-voltagesupply system. There can be potential difficulties inresidential locations due to conducted as well as radi-ated radio-frequency disturbances. The EMC or RFclassification of this equipment is Class A.

SAFETy PRECAUTIONS

ELECTRIC SHOCK can kill.

ONLy QUALIFIED PERSONNELSHOULD PERFORM THIS INSTALLA-TION.

• TURN OFF INPUT POWER TO THE POWERSOURCE AT THE DISCONNECT SWITCH ORFUSE BOX BEFORE WORKING ON THISEQUIPMENT. TURN OFF THE INPUT POWERTO ANy OTHER EQUIPMENT CONNECTED TOTHE WELDING SySTEM AT THE DISCONNECTSWITCH OR FUSE BOX BEFORE WORKING ONTHE EQUIPMENT.

• DO NOT TOUCH ELECTRICALLy HOT PARTS.• ALWAyS CONNECT THE FLEXTEC™ 650

GROUNDING LUG (LOCATED INSIDE THERECONNECT INPUT ACCESS DOOR) TO APROPER SAFETy (EARTH) GROUND.

----------------------------------------------------------------------

WARNINGTILTINGPlace the machine directly on a secure, level surface oron a recommended undercarriage. The machine maytopple over if this procedure is not followed.

LIFTINGThe FLEXTEC™ 650 has 2 lifting eyelets and 2 han-dles that can be used to lift the machine. Both handlesor both eyelets should be used when lifting the FLEXTEC™ 650. When using a crane or overhead device to lift usingthe handles, a lifting strap should be connected toboth handles. Do not attempt to lift the FLEXTEC™650 with accessories attached to it.

STACKINGMultiple FLEXTEC™ 650’s cannot be stacked.

TILTINGPlace the machine directly on a secure, level surfaceor on a recommended undercarriage. The machinemay topple over if this procedure is not followed.

ENVIRONMENTAL LIMITATIONSThe FLEXTEC™ 650 is IP23 rated for use in an out-door environment. The FLEXTEC™ 650 should not besubjected to falling water during use nor should anyparts of it be submerged in water. Doing so maycause improper operation as well as pose a safetyhazard. The best practice is to keep the machine in adry, sheltered area.

Do not mount the FLEXTEC™ 650 over com-bustible surfaces. Where there is a combustiblesurface directly under stationary or fixed electricalequipment, that surface shall be covered with asteel plate at least .060” (1.6mm) thick, which shallextend not less than 5.90” (150mm) beyond theequipment on all sides.-----------------------------------------------------------------------

INPUT AND GROUNDING CONNECTIONS

MACHINE GROUNDINGThe frame of the welder must be grounded.A ground terminal marked with the symbolshown is located inside the reconnect/input connec-tion area for this purpose. See your local and nationalelectrical codes for proper grounding methods.

HIGH FREQUENCy PROTECTIONLocate the FLEXTEC™ 650 away from radio con-trolled machinery. The normal operation of the FLEX-TEC™ 650 may adversely affect the operation of RFcontrolled equipment, which may result in bodily injuryor damage to the equipment.

CAUTION

A-4


INPUT FUSE AND SUPPLy WIRECONSIDERATIONS

Refer to Specification in this Installation Section forrecommended fuse, wire sizes and type of the copperwires. Fuse the input circuit with the recommendedsuper lag fuse or delay type breakers (also called"inverse time" or "thermal/magnetic" circuit breakers).Choose input and grounding wire size according tolocal or national electrical codes. Using input wiresizes, fuses or circuit breakers smaller than recom-mended may result in "nuisance" shut-offs fromwelder inrush currents, even if the machine is notbeing used at high currents.

INPUT VOLTAGE SELECTION

Welders are shipped connected for 460 Volt inputvoltage. To move this connection to a different inputvoltage, see Figure A.1 which is illustrated below.Refer to Auxiliary Reconnect Input Ranges table inthe Technical Specification Section. If the Auxiliarylead (indicated as ‘A’) is placed in the wrong positionand power is applied to the machine, the machine willprotect itself and display an error message:• "Err" "713 or 714" will be shown on the display. • The control board and switch boards will blink out

error 713 or 714 on their status leds.• The weld output will be turned off and the control

board will force itself into an idle state.• The machine will need to have the misconnect

condition removed before it will recover. Powermust be removed prior to changing reconnect posi-tion.

ELECTRIC SHOCK can kill.

ONLy A QUALIFIED ELECTRICIANSHOULD CONNECT THE INPUTLEADS TO THE FLEXTEC™ 650.

CONNECTIONS SHOULD BE MADE IN ACCOR-DANCE WITH ALL LOCAL AND NATIONALELECTRICAL CODES AND THE CONNECTIONDIAGRAM LOCATED ON THE INSIDE OF THERECONNECT/INPUT ACCESS DOOR OF THEMACHINE. FAILURE TO DO SO MAy RESULTIN BODILy INJURy OR DEATH.

----------------------------------------------------------------------

WARNING

INPUT CONNECTION(See Figure A.1)Use a three-phase supply line. A 1.75 inch (45 mm)diameter access hole for the input supply is located onthe case back. Remove the reconnect access panellocated on the case back and connect W, V, U andground according to the Input Supply ConnectionDiagram decal.

POWER SUPPLY TERMINAL BLOCK• Line Cord/Cable attaches here.• A ground terminal marked with the symbol shown is provided separate from this block for connecting the ground lead of the line cord. (See your local and national electrical codes for proper grounding methods.)

POWER SUPPLY ACCESS HOLE• Route input power cable through this hole.• Strain relief required. See your local and National Electrical codes for proper strain relief.

REMOVE FOUR SCREWS AND ACCESS PANEL

• Reconnects auxiliary transformer for the proper input voltage.

RECONNECT TERMINAL BLOCK

FIGURE A.1

AMPS600650750

VOLTS

44V

TEMPERATURES

55°C

DUTY CYCLE100%50%30%

HIGH TEMPERATURE OPERATIONWELDER OUTPUT RATINGS AT 55°C

ELEVATED TEMPERATURES

A-5


Pin

ABCDEF

Wiring

77 Remote potentiometer, 10K76 Remote potentiometer, wiper75 Remote potentiometer, commonTrigger, commonTrigger, inputGround

CABLE CONNECTIONSSee FIGURE A.2 for locating 6-pin and 14-pin con-nectors on the front of the FLEXTEC™ 650.

FIGURE A.2

Function

6-pin remotecontrol con-nector forremote orhand/footamptrol.

AE

C

F

BD

6-PIN REMOTE CONTROL CONNECTOR

Pin

ABCDEFGHIJKLMN

Wiring

115 VACGroundTrigger, CommonTrigger input77 Remote potentiometer, 10K76 Remote potentiometer, wiper75 Remote potentiometer, commonVoltage Sense (21)Motor (42 VAC)115 VACMotor (42 VAC)

Function

14 pin con-nector forwire feederconnectivity.G

F

EM

N

D BA

JI

LK

C

H

14-PIN CONNECTOR FOR WIRE FEEDER

14-PIN CONNECTORFOR WIRE FEEDER

6-PIN REMOTE CONTROL CONNECTOR

RECOMMENDED ELECTRODE ANDWORK CABLE SIZES FOR ARC WELDING

General GuidelinesConnect the electrode and work cables between theappropriate output studs of the FLEXTEC™ 650 perthe following guidelines:

• Most welding applications run with the electrodebeing positive (+). For those applications, connectthe electrode cable between the wire drive feedplate and the positive (+) output stud on the powersource. Connect a work lead from the negative (-)power source output stud to the work piece.

• When negative electrode polarity is required, suchas in some Innershield applications, reverse the out-put connections at the power source (electrodecable to the negative (-) stud, and work cable to thepositive (+) stud).

The following recommendations apply to all outputpolarities and weld modes:

• Select the appropriate size cables per the“Output Cable Guidelines” (See Table A.1).Excessive voltage drops caused by undersizedwelding cables and poor connections often result inunsatisfactory welding performance. Always use thelargest welding cables (electrode and work) that arepractical, and be sure all connections are clean andtight.

Note: Excessive heat in the weld circuit indicatesundersized cables and/or bad connections.• Route all cables directly to the work and wire

feeder, avoid excessive lengths and do not coilexcess cable. Route the electrode and work cablesin close proximity to one another to minimize theloop area and therefore the inductance of the weldcircuit.

• Always weld in a direction away from the work(ground) connection.

A-6


** Tabled values are for operation at ambient temperatures of 104°F(40°C) and below. Applications above 104°F(40°C) may require cableslarger than recommended, or cables rated higher than 167°F(75°C).

OUTPUT CABLE GUIDELINESCABLE SIZES FOR COMBINED LENGTHS OF ELECTRODE AND WORK CABLES

(RUBBER COVERED COPPER - RATED 167°F or 75°C)**AMPERES

200200250250250250300300350400400500600600600650650700800800

PERCENTDUTY

CYCLE

60100304060

10060

1004060

100606080100608010080100

0 to 50Ft.(0 to15m)

2232111

2/01/02/03/02/03/0

2-1/02-1/03/0

2-1/02-2/03-1/02-3/0

50 to 100Ft.(15 to 30m)

2232111

2/01/02/03/02/03/0

2-1/02-1/03/0

2-1/02-2/03-1/02-3/0

100 to 150 Ft.(30 to 46m)

2221111

2/02/02/03/03/03/0

2-1/02-1/04/0

2-1/02-3/03-1/02-3/0

150 to 200 Ft.(46 to 61m)

111111

1/02/02/03/03/03/04/0

2-2/02-2/02-2/02-2/02-3/02-3/02-3/0

200 to 250 Ft.(61 to 76m)

1/01/01/01/01/01/02/03/03/04/04/04/0

2-3/02-3/02-3/02-3/02-3/02-4/02-4/02-4/0

TABLE A.1

A-7


CONTROL CABLE CONNECTIONS

General GuidelinesGenuine Lincoln control cables should be used at alltimes (except where noted otherwise). Lincoln cablesare specifically designed for the communication andpower needs of the FLEXTEC™ 650. Most aredesigned to be connected end to end for ease ofextension. Generally, it is recommended that the totallength not exceed 100 feet (30.5 m). The use of non-standard cables, especially in lengths greater than 25feet, can lead to communication problems (systemshutdowns), poor motor acceleration (poor arc start-ing), and low wire driving force (wire feeding prob-lems). Always use the shortest length of control cablepossible, and DO NOT coil excess cable.

Regarding cable placement, best results will beobtained when control cables are routed separatefrom the weld cables. This minimizes the possibility ofinterference between the high currents flowingthrough the weld cables, and the low level signals inthe control cables.

PARALLELING

FLEXTEC™ 650 power sources may be paralleled forincreased output requirements. No kit is required forparalleling of FLEXTEC™ 650 power sources. TheFLEXTEC™ 650 can only be paralleled for constantcurrent processes (mode switch must be in the SMAWposition). Connect the power sources as shown, andset the output control of each power source to onehalf of the desired arc current. (See Figure A.3)

PPOOSSIITTIIVVEE

AATT WWOORRKK PPIIEECCEE

PPOOSSIITTIIVVEE

AATT WWOORRKK PPIIEECCEEPPOOSSIITTIIVVEE

AA

NNEEGGAATTIIVEVE

WW

PARALLELING DIAGRAM

VVUU

IINNPPUUTTTTEERRMMIINNALAL VV

WWIINNPPUUTT LLIINNESES

AA

NNEEGGAATTIIVEVE

TTOO GGRROOUNUNDD

EELLEECCTTRRIICCAALL CCOODDEEPEPERR NNAATTIIOONNAALL

UUGGNNDD

NNEEGGAATTIIVEVE

TTOO GGRROOUNUNDD

GGNNDD

PPEERR NNAATTIIOONNAALLEELLEECCTTRRIICCAALL CCOODDEE

BBLLOOCCKK

FFLLEEXXTTEECC 665500((MMAACCHHIINNEE #1#1))

FFLLEEXXTTEECC 665500((MMAACCHHIINNEE #2#2))

IINNPPUUTTTTEERRMMIINNALAL

BBLLOOCCKK

WWVVUU

VVWW

IINNPPUUTT LLIINNESES

UU

FIGURE A.3

A-8


CONNECTING LF-72 AND LF-74 TO THE FLEXTEC™ 650

CONTROL SETTING

14-PIN CONTROL CABLE K1797-XXWIRE FEEDER

ELECTRODEFLEXTEC™-650

WORK

LF-72LF-74

WELD MODE

WELD TERMINALS

REMOTE/LOCAL

VOLTMETER POLARITy

CV, CV-INNERSHIELD

OFF

LOCAL

(REMOTE IF K2329-1 INSTALLED)

PROCESS DEPENDENT

A-9


LN-10,DH-10 CONTROL SWITCHSETUPInitial set up of the LN-10, DH-10 control for the sys-tem components being used and for general operatorpreferences is done using a pair of 8-pole DIP switch-es located inside the LN-10, DH-10 control box.

Setup DIP Switch Access

1) Shut off the input power to the LN-10, DH-10 con-trol by turning off the power at the welding powersource it is connected to.

2) Remove the two screws on the top of the LN-10,DH-10 control box door and swing the door downto open.

3) Locate the two 8-pole DIP switches, near the topleft corner of the LN-10, DH-10 Control P.C. board,labeled S1 and S2.

4) Switch settings are only programmed during inputpower-up restoration.

Setting the DIP Switches

The DIP switches are each labeled with an “ON”arrow showing the on direction for each of the 8 indi-vidual switches in each DIP switch (S1 and S2). Thefunctions of these switches are also labeled and setas described below:

Pwr Sources

S1ON

S1

1 2 3 4 5 6 7 8

Head Pwr Sources

S1ON

S1

1 2 3 4 5 6 7 8

CONNECTING LN-10 AND DH-10 TO THE FLEXTEC™ 650

CONTROL SETTING

14-PIN CONTROL CABLE K1501-XX


WIRE FEEDER

LN-10DH-10

WORK

WELD MODE

WELD TERMINALS

REMOTE/LOCAL

VOLTMETER POLARITy

CV, CV-INNERSHIELD

OFF

REMOTE

PROCESS DEPENDENT

A-10


CONNECTING LN-25 PRO, LN-25 PIPE, ACTIV8 TO THE FLEXTEC™ 650


WIRE FEEDERLN-25 PRO

ACTIV8LN-25 PIPE

WORKWORK CLIP


WIRE FEEDER*LN-25 PRODUAL POWER

WORK

CONTROL CABLE K1797-XX

CONTROL SETTINGWELD MODE

WELD TERMINALS

REMOTE/LOCAL

VOLTMETER POLARITy

CV, CV-INNERSHIELD

ON

LOCAL

PROCESS DEPENDENT


WELD TERMINALS

REMOTE/LOCAL

VOLTMETER POLARITy

CV, CV-INNERSHIELD

OFF

REMOTE

PROCESS DEPENDENT

CONNECTING LN-25 PRO DUAL POWER TO THE FLEXTEC™ 650

*CONTROL CABLE SETUP SHOWN. REFER TO LN-25 PRO CONNECTION DIAGRAM IF SETTING UP"ACROSS-THE-ARC" FEEDER.

A-11


CONNECTING LN-7 TO THE FLEXTEC™ 650



WIRE FEEDER

LN-7

WORK



WIRE FEEDER

LN-8LN-9

WORK


WELD TERMINALS

REMOTE/LOCAL

VOLTMETER POLARITy

CV, CV-INNERSHIELD

OFF

LOCAL

PROCESS DEPENDENT


WELD TERMINALS

REMOTE/LOCAL

VOLTMETER POLARITy

CV, CV-INNERSHIELD

OFF

REMOTE

PROCESS DEPENDENT

CONNECTING LN-8 AND LN-9 TO THE FLEXTEC™ 650

A-12


CONNECTING NA-3, NA-5 TO THE FLEXTEC™ 650



WIRE FEEDER

NA-3NA-5

WORK

FOR NA-3, NA-4 WIRE FEEDERS ONLY:- MOVE JUMPER LEAD ON VARIABLE VOLTAGE BOARD TO "L" PIN.

FOR NA-5 WIRE FEEDER ONLY:- MOVE "BLUE" JUMPER LEAD ON VOLTAGE BOARD TO "AUTO " TERMINAL.


WELD TERMINALS

REMOTE/LOCAL

VOLTMETER POLARITy

CV- SAW

OFF

REMOTE

PROCESS DEPENDENT


WELD TERMINALS

REMOTE/LOCAL

VOLTMETER POLARITy

CV- SAW

OFF

REMOTE

PROCESS DEPENDENT

CONNECTING LT-7 TO THE FLEXTEC™ 650



TRACTOR

LT-7

WORK

B-1

OPERATIONFLEXTECTM 650

SAFETy PRECAUTIONSRead this entire section of operating instructionsbefore operating the machine.

ELECTRIC SHOCK can kill.• Unless using cold feed feature, when

feeding with gun trigger, theelectrode and drive mechanism arealways electrically energized andcould remain energized severalseconds after the welding ceases.

• Do not touch electrically live parts or electrodeswith your skin or wet clothing.

• Insulate yourself from the work and ground.• Always wear dry insulating gloves.

FUMES AND GASES can bedangerous.• Keep your head out of fumes.• Use ventilation or exhaust to remove

fumes from breathing zone.

WELDING SPARKS can causefire or explosion.• Keep flammable material away.• Do not weld on containers that have

held combustibles.

ARC RAyS can burn.• Wear eye, ear, and body protection.

Observe additional guidelines detailed in thebeginning of this manual.

WARNINGINPUT POWER

ON

OFF

HIGH TEMPERATURE

CIRCUIT BREAKER

WIRE FEEDER

POSITIVE OUTPUT

NEGATIVE OUTPUT

3 PHASE INVERTER

INPUT POWER

THREE PHASE

DIRECT CURRENT

GRAPHIC SyMBOLS THATAPPEAR ON THIS MACHINEOR IN THIS MANUAL

B-2


The FLEXTEC™ 650 is designed for the NorthAmerica and export markets and operates on 3 phase380V, 460V, or 575V 50hz or 60hz power.

DUTy CyCLEThe FLEXTEC™ 650 is capable of welding at a 100%duty cycle (continuous welding) at 650 amps ratedoutput. The 60% duty cycle rating is 750 amps (basedoff of a ten minute cycle – 6 minutes on time and 4minutes off time). The maximum output of themachine is 815 amps.

The FLEXTEC™ 650 is also rated for Desert Duty,elevated temperature operation, in a 55°C ambient.The machine is de-rated for this application. (SeeTable in the Installation Section.

DESIGN FEATURES• Severe Duty Design for outdoor use (IP23 rating)• Passive Power Factor Correction – reliably gives

88% power factor for lower installation costs.• 91% Efficiency rating – reduces electrical utility

costs.• Simple user interface - user interface is designed

with the operator in mind. Getting setup for the weldis several clicks away and even the most novicewelder can be confident he is setup properly.

• F.A.N. (fan as needed). Cooling fan runs when theoutput is energized and for a 5 minute cool downperiod after output is disabled

• Thermal protection by thermostats with ThermalIndicator LED.

• Reversible handles for ease of lifting and transport-ing

• Multiple options for lifting / transporting: Reversiblehandles; eyelet lifting bolts; and single forklift forkaccess

• Error Codes display on LED screen for ease of trou-ble shooting

• Electronic over current protection.• Input voltage mis-connection protection.• Utilizes digital signal processing and microprocessor

control.• VRD™ (Voltage Reduction Device)- Enable this

function for reduced OCV in CC modes for addedsafety.

OPEN CIRCUIT VOLTAGE

REDUCED OPENCIRCUIT VOLTAGE

INPUT VOLTAGE

OUTPUT VOLTAGE

INPUT CURRENT

OUTPUT CURRENT

PROTECTIVEGROUND

WARNING or CAUTION

Explosion

Dangerous Voltage

Shock Hazard

GRAPHIC SyMBOLS THATAPPEAR ON THIS MACHINEOR IN THIS MANUAL

U0

Ur

U1

U2

I1

I2

PRODUCT DESCRIPTIONThe FLEXTEC™ 650 is a multi-process CC/CV DCinverter and is rated for 650 amps, 44 volts at a 100%duty cycle. The FLEXTEC™ 650 is intended for bothfactory and field operation. It comes in a compact,rugged case that is designed for portability and out-door use with an IP23 environmental rating. The userinterface of the FLEXTEC™ 650 is simple and intu-itive. Weld modes are selected via a 5 position selec-tor switch. Volts and Amps are displayed on an easyto view LED display, and the amps and volts are setvia a large output control knob. A hot start and an arccontrol knob allow for finer tuning of the welding arcfor the application.

RECOMMENDED PROCESSES ANDEQUIPMENT

RECOMMENDED PROCESSES

The FLEXTEC™ 650 is designed for CC-SMAW, CC-GTAW (lift tig), CV-GMAW, CV-FCAW-SS, CV-FCAW-GS and CV-SAW welding processes. CAG(arc gouging) is also supported.

PROCESS LIMITATIONS

The FLEXTEC™ 650 is suitable only for the process-es listed.

Note: When used with K3091-1 Multi-Process Switch,the output is limited to 600A / 100% and 700A / 60%.

EQUIPMENT LIMITATIONSOperating Temperature Range is -10° C to + 55° C.Output De-rated at Temperatures above 40°C.

B-3


K3060-1K2327-5K2149-13100211

Flextec 650LF-72 Bench Model

Work CableHarris Regulator and gas hose

Basic Package

K857K857-1K870

K963-3K3091-1

Remote Output Control (25 feet)Remote Output Control (100 feet)

Foot AmptrolHand Amptrol

Multi-Process Switch

Common Optional Kits

All Models

LF-72LF-74LN-10DH-10

LN-25 ProLT-7 Tractor

LN-8LN-9

NA SERIES

Compatible Wire Feeders

COMMON EQUIPMENT PACKAGES

B-4


CASE FRONT CONTROL DESCRIPTIONS(See Figure B.1)

1. Power Switch: Controls input power to theFlextec 650.

2. Voltage Display Meter

3. Amperage Display Meter

4. Thermal LED: A yellow light that comes onwhen an over temperature situation occurs.Output is disabled until the machine coolsdown. When cool, the light goes out and outputis enabled.

5. Weld Process Selector Switch: A rotary switchthat toggles through the five available weldmodes for the Flextec 650 – CC-SMAW; CC-GTAW; CV; CV-Innershield; CV-SAW.

6. Hot Start Control Dial

7. Output Control Dial: Sets the output current orvoltage for the selected weld process.

1723

4

5

6

7

8

9

10

11

12

16

13

14

15

1FIGURE B.1

8. Local/Remote Selector Toggle Switch: Sets thecontrol of the output to local (output controlknob) or remote (K857 hand amptrol or K870foot amptrol).

9. Arc Force Control Dial

10. Weld Terminals On/Remote selector switch.

11. 14 pin wire feeder circular connector.

12. 115V or 42V wire feeder selector switch.

13. Circuit breaker reset buttons for the 14 pinwire feeder connector.

14. 6 pin remote circular connector.

15. Positive and negative welding output studs.

16. Wire Feeder Voltmeter Polarity SelectionSwitch.

17. VRD™ (Voltage Reduction Device) IndicatorLights

CASE BACK CONTROLS(See Figure B.2)

1. Input Power Cord Access Hole.

2. Access Panel – Allows access for connectinginput power and configuring the machine.

3. Input Power Reconnect – Configures themachine for the input supply voltage.

4. OPTION – GFCI protection for the 115V auxiliaryoutput.

5. 115 volt, 15 amp auxiliary output duplex withprotective environmental cover.

6. 15 Amp Circuit Breaker for the 115V auxiliarypower.

B-5


FIGURE B.2

1

2

4

3

5

6

INTERNAL CONTROLS - ENABLING VRD™

Internal Controls Description

The Control PC Board has one bank of Dip Switches.As shipped from the factory VRD™ mode is disabledand the Dip Switches are all in the “off” position. Forproper operation ensure that the ”A” lead is connectedproperly according to the Auxiliary Reconnect InputRanges table see Technical Specification Section.

To Enter VRD™ Mode (VRD™ Enabled)

a. For 380V input: Switch #5 in the “ON”Position.

b. For 460V input: Switch #6 in the “ON”Position.

c. For 575V input: Switch #5 and #6 in the“ON” Position

B-6


1 2 3 4 5 6 7 8ONOFF

DIP SWITCH LOCATION

CONTROL PCB

CONTROL PCB LOCATION

1 2 3 4 5 6 7 8ONOFF

1 2 3 4 5 6 7 8ONOFF

1 2 3 4 5 6 7 8ONOFF

FIGURE B.3

COMMON WELDING PROCEDURES

MAKING A WELDThe serviceability of a product or structure utiliz-ing the welding programs is and must be the soleresponsibility of the builder/user. Many variablesbeyond the control of The Lincoln ElectricCompany affect the results obtained in applyingthese programs. These variables include, but arenot limited to, welding procedure, plate chemistryand temperature, weldment design, fabricationmethods and service requirements. The availablerange of a welding program may not be suitablefor all applications, and the build/user is and mustbe solely responsible for welding program selec-tion.

The FLEXTEC™ 650 is a multi-process inverterwelder. The Weld Process Selector Switch is usedto set the desired weld mode. The FLEXTEC™ 650has 5 selectable welding modes:

1. SMAW – This is a CC (constant current) weldmode used for the SMAW stick welding process.

2. GTAW – This is a CC (constant current) weldmode used for the GTAW TIG welding process.

3. CV – This is CV (constant voltage) weld mode usedfor welding the GMAW MIG welding process andthe FCAW-GS flux cored gas shielded weldingprocess.

4. CV-Innershield – This is a CV (constant voltage)weld mode used for welding the FCAW-SS, fluxcored self shielded welding process.

5. CV-SAW – This is a CV (constant voltage) weldmode used for welding the SAW submerged arcwelding process

The FLEXTEC™ 650 is also capable of gouging.Gouging can be done in either the SMAW mode or theCV and CV-Innershield modes.

In addition to the weld process selector switch, a hotstart control dial, output control dial and arc control dialare provided to setup and fine tune the welding proce-dure.

WELD CONTROLS AND DISPLAyS

Weld Process Selector Switch5 Position switch used to select the welding process.

Hot Start Control Dial• The Hot Start control regulates the starting current at

arc initiation. Hot Start can be set to “0” and no addi-tional current is added at arc start. Increasing from 0to 10 will increase the additional current (relative tothe preset current) that is added at arc initiation.

Arc Control Dial• Full range selection of arc control from -10 to +10.

In CV mode, this control is an inductance control. Instick mode, the control adjusts the arc force.

Output Control Dial• Output control is conducted via a single turn poten-

tiometer.• Adjustment is indicated by the meters.• When in REMOTE modes, this control sets the maxi-

mum welding current. Full depression of a foot orhand amptrol results in the preset level of current.

Voltage Display Meter• Prior to CV operation (current flow), the meter dis-

plays desired preset voltage value (+/- .5V).• Prior to STICK or TIG operation, the meter displays

the Open Circuit Voltage of the Power Source orthree dashes if the output has not been turned on.

• During welding, this meter displays actual averagevolts.

• After welding, the meter holds the actual voltagevalue for 5 seconds. The displays blink indicating thatthe machine is in the "Hold" period.

• Output adjustment while in the "Hold" period resultsin the "prior to operation" characteristics.

Amperage Display Meter• Prior to STICK or TIG operation (current flow), the

meter displays preset current value (either 2 amps or+/- 3% (e.g. 3 amps on 100), whichever is greater).

• Prior to CV operation, the meter displays three dash-es indicating non-presettable AMPS.

• During welding, this meter displays actual averageamps.

• After welding, the meter holds the actual currentvalue for 5 seconds. The displays blink indicating thatthe machine is in the "Hold" period.

• Output adjustment while in the "Hold" period resultsin the "prior to operation" characteristics.

WARNING

POWER-UP SEQUENCE

When power is applied to the FLEXTEC™ 650, the dis-plays will illuminate and display the voltage and/oramperage settings.

B-7


Weld Terminals On/Remote Toggle Switch• This switch determines the trigger location.• When set to the “ON” position, the weld terminals

are at OCV (open circuit voltage) and ready to weld.• When set to the “REMOTE” position, output is

enabled through a remote trigger.

Control - Local/Remote Toggle Switch• Set the switch to “LOCAL” to control output at the

Flextec via the Output Control dial.• Set the switch to “REMOTE” to control output via a

remote device (K857 hand amptrol or K870 footamptrol) connected to the 6-pin remote connector ora wire feeder connected to the 14-pin connector.

Wire Feeder Selector Switch• This switch configures wire feeder supply voltage in

the 14 pin connector to either 42 volt or 115 volt.• If the switch is in the incorrect position for the

attached wire feeder, there will be no power sup-plied to the wire feeder.

Wire Feeder Voltmeter Polarity Switch• The switch provides a work connection for wire

feeder voltmeters. Place the switch in the position ofthe electrode polarity indicated by the decal. Theswitch does not change the welding polarity.

Thermal Light• This status light indicates when the power source

has been driven into thermal overload. If the outputterminals were "ON", the output will be turned backon once the unit cools down to an acceptable tem-perature level. If the unit was operating in the"REMOTE" mode, the trigger will need to be openedbefore or after the thermal has cleared and closedafter the machine has cooled down to an acceptabletemperature to establish output.

VRD™ (VOLTAGE REDUCTION DEVICE) INDICATOR LIGHTThere are 2 indicator lights on the case front of theFlextec™ 650 above the Voltage LED Display to indi-cate the status of VRD™ operation. As shipped, theVRD™ function is disabled. VRD™ is enabled by set-ting dip switches on the Control P.C. board (SeeInternal Controls Figure B.3 in this OperationSection). When VRD™ is active:

• A green light indicates the OCV (open circuit volt-age) is less than 35V peak.

• A red light indicates the OCV is at or above 35Vpeak.

• Both lights will illuminate for 5 seconds at power up.

For each weld mode, the VRD™ lights function asshown in Table B.1:

BASIC MODES OF OPERATION

SMAWThis weld mode is a constant current (CC) mode featuring con-tinuous control from 15 – 815 amps. It is intended for theSMAW stick welding processes and arc gouging.

Output Control Local/Remote – When the control is set to“LOCAL” (no remote potentiometer/control plugged into the 6pin or 14 pin connectors), the output is controlled through theOutput Control Dial on the front of the FLEXTEC™ 650. Setthis switch to “REMOTE” when an external potentiometer/con-trol is connected.

• When a remote potentiometer is connected, the output con-trol on the FLEXTEC™ 650 and the remote act as a mas-ter/slave configuration. Use the control dial on theFLEXTEC™ 650 to set the maximum welding current. Theremote will control output from minimum to the pre-set maxi-mum.

B-8


VRD™ Indicator LightsTABLE B.1

* It is normal for the lights to alternate between colors while welding.

Mode VRD™ “ON”Green (OCV reduced)Green or Red (depends on weld voltage)*Red (OCV Not Reduced)Weld Terminals ‘ON’Red (OCV Not Reduced)Weld Terminals Remotely ControlledGun Trigger ClosedGreen (NO OCV)Weld Terminals Remotely ControlledGun Trigger OpenGreen or Red (depends on weld voltage)*

CC-SMAWCC-GTAWCV-GASCV-InnershieldCV-SAW

OCVWhile weldingOCV

While welding

VRD™ “OFF”

No lights areactive

Hot Start - The Hot Start control regulates the starting currentat arc initiation. Hot Start can be set to “0” and no additionalcurrent is added at arc start. Increasing from 0 to 10 willincrease the additional current (relative to the preset current)that is added at arc initiation.

Arc Control - The Arc Control regulates the Arc Force to adjustthe short circuit current. The minimum setting (-10) will producea "soft" arc and will produce minimal spatter. The maximum set-ting (+10) will produce a "crisp" arc and will minimize electrodesticking.

Weld Terminals On/Remote – Set to “ON” and the machine isin the ready to weld state.

Voltage Display Meter – This display will display three dashedlines when the machine is in the idle state. This indicates thatvoltage is not settable in this weld mode. While output isenabled, the actual welding voltage will be displayed. Afterwelding, the meter holds the actual voltage value for 5 sec-onds. Output adjustment while in the "hold" period results in the"prior to operation" characteristics stated above. The displaysblink indicating that the machine is in the "hold" period.

GTAWThis weld mode is a constant current (CC) mode featuring con-tinuous control from 10 – 815 amps. It is intended for theGTAW tig welding processes.

Hot Start - Hot start regulates the arc initiation current. A set-ting of +10 results in the most positive arc initiation.

Arc Control – This control is not used in the GTAW mode.

Weld Terminals On/Remote• When set to the “ON” position, the weld terminals are at

OCV (open circuit voltage) and ready to weld.• When set to the “remote” position, output is enabled through

a remote trigger.

Voltage Display Meter – This display will display three dashedlines when the machine is in the idle state. This indicates that voltage is not settable in this weld mode.While output is enabled, the actual welding voltage will be dis-played. After welding, the meter holds the actual voltage valuefor 5 seconds. Output adjustment while in the "hold" periodresults in the "prior to operation" characteristics stated above.The displays blink indicating that the machine is in the "hold"period.

Amperage Display Meter – This display will display the pre-set welding current when the machine is in the idle state. Afterwelding, the meter holds the actual amperage value for 5 sec-onds. Output adjustment while in the "hold" period results in the"prior to operation" characteristics stated above. The displaysblink indicating that the machine is in the "hold" period.


• When a remote potentiometer is connected, the output con-trol on the FLEXTEC™ 650 and the remote act as a mas-ter/slave configuration. Use the control dial on theFLEXTEC™ 650 to set the maximum welding current. Theremote will control output from minimum to the pre-set maxi-mum.

Output Control Dial• When the Local/Remote is set to “LOCAL”, this dial sets the

welding amperage.• When the Local/Remote is set to “REMOTE”, this dial sets

the maximum welding amperage. The remote potentiometercontrols the amperage from minimum to this pre-set maxi-mum.

CV-GasThis weld mode is a constant voltage (CV) mode featuring con-tinuous control from 10 to 45 volts. It is intended for theGMAW, FCAW-GS, MCAW welding processes and arc goug-ing.

Hot Start – Rotate from the “0” position to the “10” position toprovide more energy during the start of a weld.

Arc Control – The Arc Control regulates pinch effect. At theminimum setting (-10), minimizes pinch and results in a softarc. Low pinch settings are preferable for welding with gasmixes containing mostly inert gases. At the maximum setting(+10), maximizes pinch effect and results in a crisp arc. Highpinch settings are preferable for welding FCAW and GMAWwith CO2.


OCV (open circuit voltage) and ready to weld. This selectionis used for across the arc wire feeders.

• When set to the “REMOTE” position, output is enabledthrough a remote trigger.

Amperage Display Meter – This display will displaythree dashed lines when the machine is in the idlestate. This indicates that amperage is not settable in this weldmode. While output is enabled, the actual welding amperagewill be displayed. After welding, the meter holds the actualamperage value for 5 seconds. Output adjustment while in the"hold" period results in the "prior to operation" characteristicsstated above.

The displays blink indicating that the machine is in the "hold"period.

B-9


Voltage Display Meter – This display will display the pre-setwelding voltage when the machine is in the idle state. Afterwelding, the meter holds the actual voltage value for 5 seconds.Output adjustment while in the "hold" period results in the "priorto operation" characteristics stated above. The displays blinkindicating that the machine is in the "hold" period.



welding voltage.• When the Local/Remote is set to “REMOTE”, this dial is dis-

abled.

CV-InnershieldThis weld mode is a constant voltage (CV) mode featuring con-tinuous control from 10 to 45 volts. It is intended for the FCAW-SS welding process and arc gouging.

Hot Start – Toggle from the “0” position to the “10” position toprovide more energy during the start of a weld.

Arc Control – The Arc Control regulates pinch effect. At theminimum setting (-10), minimizes pinch and results in a softarc. At the maximum setting (+10), maximizes pinch effect andresults in a crisp arc.

Weld Terminals On/Remote • When set to the “ON” position, the weld terminals are at



Amperage Display Meter – This display will display threedashed lines when the machine is in the idle state. This indi-cates that amperage is not settable in this weld mode. Whileoutput is enabled, the actual welding amperage will be dis-played. After welding, the meter holds the actual amperagevalue for 5 seconds. Output adjustment while in the "hold" peri-od results in the "prior to operation" characteristics statedabove. The displays blink indicating that the machine is in the"hold" period.

Voltage Display Meter – This display will display the pre-setwelding voltage when the machine is in the idle state. Afterwelding, the meter holds the actual voltage value for 5 sec-onds. Output adjustment while in the "hold" period results in the"prior to operation" characteristics stated above. The displaysblink indicating that the machine is in the "hold" period.



welding voltage.• When the Local/Remote is set to “REMOTE”, this dial is dis-

abled.

CV-SAWThis weld mode is a constant voltage (CV) mode featuring con-tinuous control from 10 to 45 volts. It is intended for the CV-SAW submerged arc welding process.

Hot Start – Not used for this welding process.

Arc Control – Not used for this welding process .




Amperage Display Meter – This display will display threedashed lines when the machine is in the idle state. This indi-cates that amperage is not settable in this weld mode. Whileoutput is enabled, the actual welding amperage will be dis-played. After welding, the meter holds the actual amperagevalue for 5 seconds. Output adjustment while in the "hold" peri-od results in the "prior to operation" characteristics statedabove. The displays blink indicating that the machine is in the"hold" period.

Voltage Display Meter – This display will display the pre-setwelding voltage when the machine is in the idle state. Afterwelding, the meter holds the actual voltage value for 5 sec-onds. Output adjustment while in the "hold" period results in the"prior to operation" characteristics stated above. The displaysblink indicating that the machine is in the "hold" period.


Output Control Dial• When the Local/Remote is set to “LOCAL”, this dial

sets the welding voltage.• When the Local/Remote is set to “REMOTE”, this dial

is disabled.

B-10


OPTIONS / ACCESSORIES

General Options

K2149-1 Work Lead Package.

K1842-10 10ft. Weld Power Cable (Lug to Lug).

K3091-1 Multi-ProcessSwitch

Inverter and Wire Feeder CartRear-wheeled cart with front castersand gas bottle platform. Convenienthandles allow for easy cable stor-age. Small footprint fits through 30in. (762 mm) door. Not intended foruse with double head wire feeders.Order K3059-1

Fume Extracting Systems

Accessory Kit For stick weld-ing. Includes 35 ft. (10.7 m) 2/0electrode cable with lug, 30 ft.(9.1 m) 2/0 work cable with lugs,headshield, filter plate, coverplate, work clamp and electrodeholder. 400 amp capacity. OrderK704

Remote Output ControlConsists of a control box withchoice of two cable lengths.Permits remote adjustment of out-put.Order K857 for 25 ft. (7.6 m)Order K857-1 for 100 ft. (30 m)

C-1

ACCESSORIESFLEXTECTM 650

TIG Options

Pro-Torch™ TIG Torches – PTA-9, PTA-17, PTA-26 – 2 piecepower cord.

Foot Amptrol®Provides 25 ft. (7.6 m) of remotecurrent control for TIG welding.(6-pin plug connection).Order K870

Hand Amptrol® - Provides 25 ft.(7.6 m) of remote current controlfor TIG welding. (6-pin plug con-nection).Order K963-3

Arc Start Switch - May be usedin place of the Foot or HandAmptrol®. Comes with a 25 ft.(7.6m) cable. Attaches to the TIGtorch for convenient finger controlto start and stop the weld cycle atthe current set on the machine.Order K814

GFCI KIT - Order K3157-1

Dual Cylinder Inverter and WireFeeder Cart - Rear-wheeled cartwith front casters and dual gas bot-tle platform. Convenient handlesallow for easy cable storage. Smallfootprint fits through 30in. (762 mm)door. Can be used with dual headwire feeders. Order K3059-3

PERIODIC MAINTENANCE

Thermal ProtectionThermostats protect the machine from excessiveoperating temperatures. Excessive temperatures maybe caused by a lack of cooling air or operating themachine beyond the duty cycle and output rating. Ifexcessive operating temperature should occur, thethermostat will prevent output voltage or current. Themeter wil l remain energized during this t ime.Thermostats are self-resetting once the machine coolssufficiently. If the thermostat shutdown was caused byexcessive output or duty cycle and the fan is operatingnormally, the Power Switch may be left on and thereset should occur within a 15 minute period.

SAFETy PRECAUTIONS

ELECTRIC SHOCK can kill.• Only Qualified personnel should

perform this maintenance.

• Turn the input power OFF at thedisconnect switch or fuse box beforeworking on this equipment.

• Do not touch electrically hot parts.------------------------------------------------------------------------

See additional warning informationthroughout this Operator’s Manual -----------------------------------------------------------

WARNING

VISUAL INSPECTION

Clean interior of machine with a low pressure airstream. Make a thorough inspection of all compo-nents. Look for signs of overheating, broken leads orother obvious problems. Many problems can beuncovered with a good visual inspection.

ROUTINE MAINTENANCEVRD™ Functionality should be checked once per dayor once per shift. VRD™ functionality can be verifiedby the indicator lights on the front of the power source.One of the lights will be illuminated at all times whenVRD™ is enabled. No lights will be illuminated whenVRD™ is disabled. VRD™ can be verified by cyclingpower as well. When VRD™ is enabled, the VRD™indicator lights will illuminate for 5 seconds at powerup and one light will remain illuminated.

1. Every 6 months or so the machine should becleaned with a low pressure airstream. Keeping themachine clean will result in cooler operation andhigher reliability. Be sure to clean these areas:

• All printed circuit boards• Power switch• Main transformer• Heatsink fins• Input rectifier • Auxiliary transformer• Reconnect switch area• Fan (blow air through the rear louvers)

2. Examine the sheet metal case for dents or break-age. Repair the case as required. Keep the case ingood condition to insure that high voltage parts areprotected and correct spacings are maintained. Allexternal sheet metal screws must be in place toinsure case strength and electrical ground continu-ity.

D-1

MAINTENANCEFLEXTECTM 650

D-2

NOTESFLEXTECTM 650

E-1

TROUBLESHOOTINGFLEXTECTM 650

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

Observe all Safety Guidelines detailed throughout this manual

E-2


PROBLEMS(SyMPTOMS)

POSSIBLE CAUSE

RECOMMENDEDCOURSE OF ACTION

Major physical or electrical damageis evident when the sheet metalcovers are removed.

Machine won’t weld, can’t get anyoutput.

Thermal LED is lit.

Wire feeder won’t work. Apparentlyno power to wire feeder

1. Contact your local authorizedLincoln Electric Field Service facil-ity for technical assistance.

1. If the displays show an Err ###see the fault section for correctiveaction.

2 If the thermal LED is lit refer to thethermal section.

3 If the output terminals are inremote control switch to "ON" andcheck for output voltage. If outputvoltage is now present check forcorrect remote control connectionand operation.

1. Check for proper fan operation.• Check for material blocking

intake or exhaust louvers.• Blow air in the rear louvers to

clear dirt from the fan.Note: The Fan As Needed circuitry

automatically shuts off the fan5 minutes after welding hasstopped.

2. Welding output ratings may havebeen exceeded. Allow themachine to cool down and reset.

1. Check the 115/42V wire feederswitch (located on the case front)to make sure it is properly set forthe input voltage requirement ofthe wire feeder.

2. Check circuit breakers by the wirefeeder receptacles on the front ofthe machine. Reset if required.

3. Check the control cable betweenthe power source and the wirefeeder for continuity.

1.If all recommended possible areasof misadjustment have beenchecked and the problem persists,Contact your local LincolnAuthorized Field ServiceFacility.



CAUTION

USING THE STATUS LED TO TROUBLESHOOT SySTEM PROBLEMSErrors are displayed on the amperage and voltage display meters. In addition, there are status lights on the con-trol pc board and the switch pc board that contain error sequences.

Included in this section is information about the fault codes indicated on the status lights and some basic trou-bleshooting charts for both machine and weld performance.

The status lights on the main control board and the switch pc board are dual-color LED’s. Normal operation foreach is steady green.

E-3


ErrorCode#

21

31

36

45

712

Description

Device that controls sequenceof the welding operation halt-ed due to an error.

Primary Over Current.

Thermal Fault

VRD™ Voltage limit exceeded.

Communication Fault

Check the input power (voltage and fre-quency). Verify the primary reconnect isproperly configured for the input voltage.

Machine shut off output due to elevatedinternal temperatures.

During OCV, the voltage exceeded allow-able VRD™ levels.

• Verify dip switch settings are correct forthe input voltage.

CAN communication between the controlpcb and switch pcb has been interrupted.

Weld Terminals Remote:Re-trigger to recover fromerror.

Weld Terminals Local:Toggle Remote/Local Switchto recover from error.

Machine needs to be turnedoff and back on to reset.

1. Check for material block-ing intake or exhaust lou-vers.• Blow air in the rear lou-

vers to clear dirt from thefan.

Note: The Fan As Neededcircuitry automaticallyshuts off the fan 5 minutesafter welding has stopped.

2. Welding output ratingsmay have been exceeded.Allow the machine to cooldown and reset.

Machine needs to be turned offand back on to reset.

Inspect harness for damage /loose connections.

FLEXTEC™ 650 Fault CodesCorrective ActionPossible Cause



CAUTION

E-4


ErrorCode#

713

714

715

719

Description

Input Power Misconnect.Supply Voltage is too high.

Input Power Misconnect.Supply Voltage is too low.

Under Voltage Lockout.

Switch PCB Error.

Occurs upon power up when the supplyvoltage to the switch pcb exceeded accept-able levels.

Occurs upon power up when the supplyvoltage to the switch pcb is below accept-able levels.

The supply voltage to the switch pcb isbelow acceptable levels

Verify the primary reconnectis properly configured for theinput voltage.


Verify the primary reconnect is properly configured for theinput voltage.




FLEXTEC™ 650 Fault CodesCorrective ActionPossible Cause

If any of these conditions persist contact an authorized Lincoln Field Service Shop.

E-5

NOTESFLEXTECTM 650

F-1

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F-2


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F-3


L160

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23.64

NOTESFLEXTECTM 650

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.

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

l Insulate yourself from work andground.

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

l Aislese del trabajo y de la tierra.

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

l Isolez-vous du travail et de la terre.

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

l Isolieren Sie sich von denElektroden und dem Erdboden!

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

l Isole-se da peça e terra.

l Keep flammable materials away.

l Mantenga el material combustiblefuera del área de trabajo.

l Gardez à l’écart de tout matérielinflammable.

l Entfernen Sie brennbarres Material!

l Mantenha inflamáveis bem guarda-dos.

l Wear eye, ear and body protection.

l Protéjase los ojos, los oídos y elcuerpo.

l Protégez vos yeux, vos oreilles etvotre corps.

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

l 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.

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

remove fumes from breathing zone.

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

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

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

teur pour ôter les fumées des zonesde travail.

l Vermeiden Sie das Einatmen vonSchweibrauch!

l Sorgen Sie für gute Be- undEntlüftung des Arbeitsplatzes!

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

remover fumo da zona respiratória.

l Turn power off before servicing.

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

l Débranchez le courant avant l’entre-tien.

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

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

serviço.l Não toque as partes elétricas nuas.

l Do not operate with panel open orguards off.

l No operar con panel abierto oguardas quitadas.

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

l Anlage nie ohne Schutzgehäuseoder Innenschutzverkleidung inBetrieb setzen!

l Mantenha-se afastado das partesmoventes.

l Não opere com os paineis abertosou guardas removidas.

Customer assistanCe PoliCy

The business of The Lincoln Electric Company is manufacturing andselling high quality welding equipment, consumables, and cuttingequipment. Our challenge is to meet the needs of our customers andto exceed their expectations. On occasion, purchasers may askLincoln Electric for advice or information about their use of ourproducts. We respond to our customers based on the best informationin our possession at that time. Lincoln Electric is not in a position towarrant or guarantee such advice, and assumes no liability, withrespect to such information or advice. We expressly disclaim anywarranty of any kind, including any warranty of fitness for anycustomer’s particular purpose, with respect to such information oradvice. As a matter of practical consideration, we also cannot assumeany responsibility for updating or correcting any such information oradvice once it has been given, nor does the provision of informationor advice create, expand or alter any warranty with respect to the saleof our products.

Lincoln Electric is a responsive manufacturer, but the selection anduse of specific products sold by Lincoln Electric is solely within thecontrol of, and remains the sole responsibility of the customer. Manyvariables beyond the control of Lincoln Electric affect the resultsobtained in applying these types of fabrication methods and servicerequirements.

Subject to Change – This information is accurate to the best of ourknowledge at the time of printing. Please refer to www.lincolnelectric.com for any updated information.

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flextec tm 650 - lincoln electric

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