Lincoln Electric SVM141-A service manual Installation, Technical Specifications Square Wave TIG

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A-2

 

 

 

INSTALLATION

 

 

 

 

A-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TECHNICAL SPECIFICATIONS - Square Wave TIG 275

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

INPUT - SINGLE PHASE ONLY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Standard

 

 

Input Current at

Input Current at

Input Current at

Idle Current

Idle Power

 

 

Code

 

 

Voltage

 

 

40% Duty Cycle

60% Duty Cycle

100% Duty Cycle

 

 

 

 

Number

 

 

 

 

 

DC

 

AC

DC

 

AC

DC

 

AC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

208/230/460/1/60 (K1617-1)

 

 

95/86/43

 

130/120/61

76/69/34

 

106/97/50

57/52/26

 

82/75/38

5/4/2

900 W Max.

 

 

10523

 

 

460/575/1/60 (K1617-2)

 

 

43/35

 

61/49

34/28

 

50/41

26/21

 

38/31

2/1.5

900 W Max.

 

 

10525

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RATED OUTPUT & ADDITIONAL OUTPUT CAPACITY

 

Duty Cycle

 

Amps

Volts at Rated Amperes

Current Range

Auxiliary Power

 

 

40% Duty Cycle

DC TIG & AC/DC Stick

275 A

31.0 V

5-315 Amps

115 Volts AC, 10 Amps

 

 

NEMA Class II (40)

AC TIG

255 A

16.1 V

 

Grounded NEMA-5-15R

 

 

 

 

 

 

MAX O.C.V.

Receptacle and

 

 

 

 

 

 

 

 

60% Duty Cycle

DC TIG & AC/DC Stick

225 A

29.0 V

10 Amp Circuit Breaker

 

 

 

AC TIG

200 A

15.4 V

AC & DC 80V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal O.C.V.

 

 

 

100% Duty Cycle

DC TIG & AC/DC Stick

175 A

27.0 V

 

 

 

 

AC TIG

150 A

14.8 V

72 V (AC) 59 V (DC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RECOMMENDED INPUT WIRE AND FUSE SIZES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

For all Stick, DC TIG and Balanced AC TIG

 

 

For Unbalanced AC TIG Welding above 180A,

 

 

 

 

 

 

 

Welding at 275A 40% Duty Cycle

 

 

255A 40% Duty Cycle, Maximum Penetration

 

 

 

 

 

 

 

w/o Optional K1620-1 Power Factor Capacitors

 

 

w/o Optional K1620-1 Power Factor Capacitors

 

 

 

 

 

 

 

Based on the 1996 U.S. National Electrical Code

 

 

Based on the 1996 U.S. National Electrical Code

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Type 75°C

 

Type 75°C

 

 

 

 

Type 75°C

 

Type 75°C

 

 

Input

 

 

 

Fuse

 

Input

 

 

Copper Wire in

 

Copper

 

Fuse

Input

 

Copper Wire in

 

Copper

 

 

Voltage /

 

 

(Super Lag)

 

Amperes

 

 

Conduit AWG

 

Ground Wire in

(Super Lag)

Amperes

 

Conduit AWG

 

Ground Wire in

 

 

phase/

 

 

or Breaker

 

 

 

 

(IEC) Sizes

 

Conduit AWG

or Breaker

 

 

(IEC) Sizes

 

Conduit AWG

 

 

Frequency

 

 

 

Size(1)

 

 

 

 

40°C (104°F) Ambient

 

(IEC) Sizes

 

Size(1)

 

 

40°C (104°F) Ambient

 

(IEC) Sizes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

208/1/60

 

 

125

 

111

 

 

4 (21.2 mm2)

 

6 (13.3 mm2)

150

130

 

3 (25.0 mm2)

 

6 (13.3 mm2)

 

 

230/1/60

 

 

125

 

100

 

 

4 (21.2 mm2)

 

6 (13.3 mm2)

150

120

 

3 (25.0 mm2)

 

6 (13.3 mm2)

 

 

460/1/60

 

 

60

 

50

 

 

8 (8.4 mm2)

 

10 (5.3 mm2)

70

61

 

8 (8.4 mm2)

 

8 (8.4 mm2)

 

 

575/1/60

 

 

50

 

40

 

 

10 (5.3 mm2)

 

10 (5.3 mm2)

60

49

 

8 (8.4 mm2)

 

10 (5.3 mm2)

 

(1)Also called “inverse time” or “thermal/magnetic” circuit breakers; circuit breakers which have a delay in tripping action that decreases as the magnitude of cur- rent increases.

PHYSICAL DIMENSIONS

 

Height

Width

Depth

Weight

Power

24.06 in.

19.15 in.

28.00 in.

Approx. 330 lbs.

Source

611 mm

486 mm

711 mm

150 kg.

 

Lift Hook add 3.57” (91 mm)

 

 

 

 

 

 

 

 

Power Source

33.40 in.

27.65 in.

40.65 in.

Approx. 375 lbs.

on

848 mm

702 mm

1033 mm

170 kg.

Undercarriage

 

 

 

 

 

 

 

 

 

SQUARE WAVE TIG 275

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Contents Safety Depends on You Square Wave TIGSafety Square Wave TIGFumes and Gases can be dangerous Electric Shock can killARC Rays can burn Cylinder may explode if damaged IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcMaster Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical Specifications Square Wave TIGSafety Precautions Input Supply Connections Figure A.1Input Reconnect Procedure Return to Section TOC To Section TOCUser Supplied Connectors Output ConnectionsWork Cable Connection Table A.1TIG Torch Connection Cylinder could explode if damagedTWIST-MATE Adapter for LA-9 and LA-17 TIG Torch TWIST-MATE Adapter for LW-18 and LW-20 TIG TorchCompleted Assembly Square Wave TIG Table of Contents Operation Section Operation Electric Shock can killFumes and Gases can be dangerous Welding Sparks can cause fire or explosionRecommended Processes and Equipment Design Features AdvantagesGeneral Description Welding Capability LimitationsControls and Settings Figure B.1 Control PanelWelding Operation TIG WeldingTIG Welding Guidelines Twist Mate ElectrodeTIG Welding Sequence of Operation 4-Step TIG Mode TIG Welding Sequence of Operation 2-Step TIG ModeTable B.2 Recommended Polarity Settings for TIG Welding AC Wave Balance and Auto Balance Advanced TIG Welding FeaturesHand and Foot Amptrol Operation Auxiliary Power Stick WeldingHertz Domestic Machines 50/60 Hertz European MachinesSquare Wave TIG Table of Contents Accessories Section C-1Section C-1K963-1, -2 Hand Amptrol Accessories Included with MachineOptional Accessories Table of Contents Maintenance Section Overload Protection MaintenanceRoutine and Periodic Maintenance Component Location and Access Spark GAP ASSEMBLY, High Voltage TransformerControl PC Board Display PC BOARD, ARC STARTER/BYPASS PC BoardFigure D.2 Major Component Locations Table of Contents Theory of Operation Section Input Power Circuit Theory of OperationOutput Rectification Control Board and Feedback Figure E.3 Output RECTIFICATION, Control Board and FeedbackHigh Voltage / High Frequency Circuit Figure E.4 High Voltage / High Frequency CircuitDC Welding Output Figure E.5 DC Welding OutputAC Welding Output Figure E.7 AC Welding OutputSCR Operation Figure E.9 SCR OperationOverload Protection Protective CircuitsThermal Protection Table of Contents Troubleshooting & Repair Section Troubleshooting & Repair HOW to USE Troubleshooting GuideDisable Procedure High Voltage / High Frequency can damage test equipmentPC Board Troubleshooting Procedures PC Board can be damaged by static electricityDetailed in the beginning of this manual Troubleshooting GuideObserve Safety Guidelines Perform the SCR Bridge Test Troubleshooting & Repair Connections Troubleshooting Guide Troubleshooting & Repair TIG Welding Problems Electric Shock Can KillTroubleshooting & Repair To Technical Specifications Stick Welding Problems Function Problems 15F-15Function Problems Installation Troubleshooting & Repair Materials Needed High Frequency Circuit Disable ProcedureTest Description High Frequency Circuit Disable Procedure ProcedureT1 Main Transformer Test Test Procedure T1 Main Transformer TestReplace the case side covers Test Points Primary WINDINGS1GAS Water Solenoid Test GAS Water Solenoid Test Figure F.3 GAS Solenoid LocationStatic SCR Test Static SCR Test Figure F.4 Plug J1 Location on Control BoardAssembly Removal and Replacement Active SCR Test DescriptionActive SCR Test Figure F.6 Plug J1 Location on Control BoardFigure F.7 Active SCR Test Setup SCR Bridge Assembly Removal and Replacement Normal Open Circuit Voltage Waveform AC TIG ModeScope Settings DC TIG Mode AC Stick Mode DC Stick Mode AT 30 VAC Typical Output Voltage Waveform Machine LoadedMachine Loaded to 255 Amps Machine Loaded to 275 Amps AT 31 VDCAC Stick Mode DC Stick Mode 50 V/Div High Voltage Transformer Removal Replacement High Voltage Transformer Removal ReplacementRemoval Procedure Replacement Procedure Figure F.10 High Voltage Transformer Mounting InsulatorsSCR Bridge Assembly Removal and Replacement SCR Bridge Assembly Removal and Replacement Using the 3/8 nut driver, remove the caseFigure F.13 SCR Bridge Connections Refer to Figures F.11 F.13 Polarity Switch Removal and Replacement Polarity Switch Removal and Replacement Allen Screw Control Knobs Polarity Switch HandlePOS Micro Switch Leads Square Wave TIG 253Figure F.16 Polarity Switch Wiring Diagram Replacement Procedure For Steps 9--17, see Figure F.15 and F.16Description Main Transformer and Output Choke Assembly Removal and ReplacementFigure F.18 Transformer Connections Figure F.19 Polarity Switch Connections Choke NEG POS Micro Switch LeadsReassembly Procedure Refer to Figures F.17 F.19Minimum Acceptable Output Voltage AT Maximum Output Setting Retest After RepairInput Idle Amps Open Circuit VoltagesSquare Wave TIG Section G Wiring Diagram L10747Electrical TIGDiagram L10747-2 SquarewaveElectrical Diagrams Control Board Schematic G3358-1Control Board Schematic G3358-2 OCI4 TRI3 MT2Display Board Schematic L10768 Return to Section Return to Section TOC To Section TOCBypass Display Board Layout L10770-1 L10770-17-24-98XXX Bypass Board Layout L10121-1 10G-10Square Wave TIG

SVM141-A specifications

The Lincoln Electric SVM141-A is a cutting-edge solution designed for operators requiring precision, efficiency, and versatility in their welding applications. This machine is known for its compact form but robust feature set, making it an ideal choice for both professional welders and industrial applications.

One of the standout features of the SVM141-A is its advanced inverter technology. This innovation allows for a stable arc, providing consistent results even under varying conditions. The machine minimizes power consumption, making it energy-efficient without compromising performance. The inverter technology also supports a wider input voltage range, making the SVM141-A suitable for use in diverse environments and job sites.

Another key characteristic is its multi-process capability. The SVM141-A supports MIG, stick, and TIG welding processes, providing flexibility for various welding tasks. This versatility enables operators to tackle different materials, including mild steel, stainless steel, and aluminum, making it a valuable tool for numerous projects.

The user-friendly interface of the SVM141-A includes an intuitive digital display, which allows welders to adjust settings with ease. This feature is crucial for ensuring the right configurations for specific welding tasks, reducing the chances of errors and enhancing the overall finish of welds.

Safety is also a priority with the Lincoln Electric SVM141-A. It comes with built-in safety features such as overheat protection and automatic shutdown, ensuring operator safety and equipment longevity. The machine's lightweight design enhances portability, allowing it to be used in various workspaces with ease.

Durability is another hallmark of the SVM141-A. Constructed with high-quality materials, the machine is designed to withstand the rigors of demanding work environments. This ensures reliability over time, providing consistent performance even under heavy use.

In summary, the Lincoln Electric SVM141-A is a versatile, efficient, and user-friendly welding machine that appeals to a wide range of users. Its advanced inverter technology, multi-process capabilities, safety features, and durable construction make it a strong contender in the welding market, suitable for both professionals and hobbyists alike. Whether it’s for light fabrication, repairs, or industrial welding tasks, the SVM141-A meets diverse needs with precision and reliability.
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