Lincoln Electric SVM186-A service manual For Electrically, Powered equipment

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iii

 

 

 

 

 

SAFETY

 

 

 

iii

 

 

 

 

 

 

 

 

 

 

 

WELDING and CUTTING

 

CYLINDER may explode

 

SPARKS can

 

 

 

 

if damaged.

 

 

 

cause fire or explosion.

 

7.a. Use

only compressed

gas

cylinders

 

6.a. Remove fire hazards from the welding area.

 

containing the correct shielding gas for the

 

 

If this is not possible, cover them to prevent

 

process used and properly operating

 

the welding sparks from starting

a

fire.

 

regulators designed for the gas and

 

Remember

that

welding

sparks

and

hot

 

pressure used. All hoses, fittings, etc. should be suitable for

 

materials from welding can easily go through small cracks

 

the application and maintained in good condition.

 

 

and openings to adjacent areas. Avoid welding near

7.b. Always keep cylinders in an upright position securely

 

hydraulic lines. Have a

fire extinguisher readily available.

 

 

 

 

 

 

 

 

chained to an undercarriage or fixed support.

 

6.b. Where compressed gases are to be used at the job site,

7.c. Cylinders should be located:

 

 

 

special precautions should be used to prevent hazardous

 

 

 

situations. Refer to “Safety in Welding and Cutting” (ANSI

 

• Away from areas where they may be struck or subjected to

 

Standard Z49.1) and the operating information for the

 

physical damage.

 

 

 

 

equipment being used.

 

 

 

 

 

• A safe distance from arc welding or cutting operations and

 

 

 

 

 

 

 

 

6.c. When not welding, make certain no part of the electrode

 

any other source of heat, sparks, or flame.

 

 

circuit is touching the work or ground. Accidental contact can

7.d. Never allow the electrode, electrode holder or any other

 

cause overheating and create a fire hazard.

 

 

 

 

 

 

 

 

 

 

electrically “hot” parts to touch a cylinder.

 

 

6.d. Do not heat, cut or weld tanks, drums or containers until the

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

 

proper steps have been taken to insure that such procedures

 

will not cause flammable or toxic vapors from substances

 

when opening the cylinder valve.

 

 

 

inside. They can cause an explosion even though they have

7.f.

Valve protection caps should always be in place and hand

 

been “cleaned”. For information, purchase “Recommended

 

Safe Practices for the Preparation for Welding and Cutting of

 

tight except when the cylinder is in use or connected for

 

Containers and Piping That Have Held Hazardous

 

use.

 

 

 

 

Substances”, AWS F4.1 from the American Welding Society

7.g. Read and follow

the instructions on

compressed gas

 

(see address above).

 

 

 

 

 

 

 

 

 

 

cylinders, associated equipment, and CGA publication P-l,

 

 

 

 

 

 

 

 

6.e. Vent hollow castings or containers before heating, cutting or

 

“Precautions for Safe Handling of Compressed

Gases in

 

Cylinders,” available from the Compressed Gas Association

 

welding. They may explode.

 

 

 

 

 

 

 

 

 

1235 Jefferson Davis Highway, Arlington, VA 22202.

 

 

 

 

 

 

 

 

6.f.

Sparks and spatter are thrown from the welding arc. Wear oil

 

 

 

 

 

 

free protective garments such as leather gloves, heavy shirt,

 

FOR ELECTRICALLY

 

cuffless trousers, high shoes and a cap over your hair. Wear

 

 

ear plugs when welding out of position or in confined places.

 

powered equipment.

 

Always wear safety glasses with side shields when in a

 

 

 

 

 

 

 

 

welding area.

 

 

 

 

 

 

 

 

 

 

6.g. Connect the work cable to the work as close to the welding

 

8.a. Turn off input power using the disconnect

 

switch at the fuse box before working on

 

area as practical. Work cables connected to the building

 

the equipment.

 

 

 

 

framework or other locations away from the welding area

8.b. Install equipment in accordance with the U.S. National

 

increase the possibility of the welding current passing

 

through lifting chains, crane cables or other alternate circuits.

 

Electrical Code, all local codes and the manufacturer’s

 

This can create fire hazards or overheat lifting chains or

 

recommendations.

 

 

 

 

cables until they fail.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8.c. Ground the equipment in accordance with the U.S. National

6.h. Also see item 1.c.

 

 

 

 

 

Electrical Code and the manufacturer’s recommendations.

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

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

Jan ‘07

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Contents Precision TIG ISAFETYi Safety Fumes and GasesPowered equipment For ElectricallyPrécautions DE Sûreté Sûreté Pour Soudage a LʼArcElectromagnetic Compatibility EMC Safety Master Table of Contents for ALL Sections Table of Contents Installation Section Installation Input Single Phase onlyModel Height Width Depth Weight K2533-2 Input at Rated OutputSafety Precautions Select Suitable Location MountingLifting and Moving TiltingInput and Grounding Connections Input Reconnect Procedure Return Section TOCConnections for TIG Gtaw Welding Connections for Stick Smaw WeldingPrecision TIG Table of Contents Operation Section Operation Product Description Recommended Processes and EQUIP- MentFigure B.1 Control Panel Control FunctionalityPOWER-UP Sequence Case Rear Components Machine Rating PlateOperating Steps Welding in TIG ModePulse TIG Control Operation Welding in Stick Mode Turn the power switch to onPrecision TIG Table of Contents Accessories Section Standard Equipment Packages AccessoriesTable C.1 Factory Installed Options Table C.2Field Installed Options K2348-1 Under-Storage CartTable of Contents Maintenance Section Maintenance Safety PrecautionsRoutine and Periodic Maintenance Spark GAP Adjustment1TABLE of CONTENTS-THEORY of Operation Section E-1 Theory of Operation Input Power CircuitGeneral Description Output Rectification Feedback Control ProtectedHigh Voltage / High Frequency Circuit Figure E.2 High Voltage/High Frequency CircuitDC Welding Output Figure E.5 DC Welding Current GenerationAC Welding Output Figure E.6 AC Square Wave Welding Current GenerationSCR Operation Figure E.7 SCR OperationProtective Circuits Thermal ProtectionOverload Protection VAC Receptacle1TABLE of Contents Troubleshooting and Repair F-1 Troubleshooting and Repair HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures WorkstationsPerform the T1 Transformer Amptrol is depressed Troubleshooting and Repair Perform the SCR Bridge Test Possible Areas Misadjustments Problems SymptomsRecommended Course of Action Troubleshooting and Repair Troubleshooting and Repair Problems Symptoms Electric Shock can Perform the SCR Bridge Test Stick electrode Blasts Off when Weld current may be set too Test Description High Frequency Circuit Disable ProcedureMaterials Needed Procedure Figure F.1 Spark GAP AssemblyT1 Transformer Test T1 Transformer Test Primary Windings Primary Voltages Precision TIG Static SCR Test Test Procedure Precision TIG 225 ControlCase Cover Removal and Replacement Procedure Precision TIG Active SCR Test Active SCR Test Figure F.6 SCR Gate Locations Precision TIG Normal Open Circuit Voltage Waveform AC TIG Mode Scope SettingsNormal Open Circuit Voltage Waveform DC TIG Mode Normal Open Circuit Voltage Waveform AC Stick Mode Normal Open Circuit Voltage Waveform DC Stick Mode Typical Output Voltage Waveform Machine Loaded AC TIG ModeMachine Loaded to 180 Amps AT 16VDC DC TIG Mode AC Stick Mode Machine Loaded to 180 Amps AT 26VDCDC Stick Mode Troubleshooting and Repair Precision TIG SCR Bridge Assembly Removal and Replacement Procedure SCR Bridge Assembly Figure F.7 Case Back Mounting ScrewsProcedure Plug J2 Removed Replacement Procedure Precision TIG Polarity Switch Removal and Replacement Procedure Polarity Switch Removal ProcedureReplacement Procedure Precision TIG High Voltage Transformer Removal and Replacement Procedure High Voltage Transformer Transformer Secondary LeadsFigure F.12 High Voltage Transformer Mounting Insulators Precision TIG 53F-53 Perform the SCR Bridge Assembly Replacement Procedure Input Idle Amps Retest After RepairRecommended Meters for Machine Output Tests Precision TIG Table of Contents Diagram Section Electrical Diagrams Schematic Complete Machine ALL Codes G5647 Schematic Control PC Board #1 G5640 Schematic Control PC Board #2 G5640 Schematic Control PC Board #3 G5640 PC Board Assembly Control #1 G5641 PC Board Assembly Control #2 G5641 1B0-S22530 PC Board Assembly Bypass L10121

SVM186-A specifications

The Lincoln Electric SVM186-A is a versatile and highly efficient welding machine that stands out in the competitive landscape of industrial welding equipment. Designed to meet the needs of both professionals and hobbyists, this machine combines advanced technology with robust construction, delivering outstanding performance in various welding applications.

One of the standout features of the SVM186-A is its multi-process capability. This welding machine can handle MIG, TIG, and Stick welding processes, making it suitable for a diverse range of projects, from light fabrication to heavy-duty work. This flexibility reduces the need for multiple machines, saving time and space for users who require versatility in their welding operations.

The SVM186-A is powered by a reliable and durable inverter technology, which ensures a stable arc and efficient operation across different materials, including stainless steel, aluminum, and mild steel. This inverter technology not only enhances performance but also reduces energy consumption, making it an environmentally friendly choice.

Another notable characteristic of the SVM186-A is its user-friendly interface. The digital display provides real-time information on voltage and wire feed speed, allowing welders to easily adjust settings for optimal results. This intuitive control panel design makes it accessible for both novice welders and seasoned professionals who value precision.

The machine is also built with safety features in mind. It comes equipped with overcurrent protection and thermal overload protection to prevent damage during operation. This ensures that users can work confidently, knowing that the equipment is designed to handle demanding tasks while prioritizing safety.

Portability is another advantage of the SVM186-A. Weighing in at a relatively light weight compared to other industrial welders, this machine is designed for ease of transport. Whether working on-site or in a workshop, welders can easily move the equipment as needed.

In summary, the Lincoln Electric SVM186-A is a sophisticated welding machine that merges technology and practicality. Its multi-process capability, inverter technology, user-friendly interface, safety features, and portability make it a top choice for those seeking dependable and efficient welding solutions. Whether for professional fabrication or personal projects, the SVM186-A is equipped to handle the demands of modern welding tasks with exceptional ease and effectiveness.
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