Lincoln Electric SVM179-B Safety Precautions, High Frequency Protection, Location, Table A.1

Page 9

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A-3

INSTALLATION

A-3

 

 

 

SAFETY PRECAUTIONS

The LN-25™ PRO is rated IP23 and is suitable for

 

outdoor use.

 

WARNING

The handle of the LN-25™ PRO is intended for moving the wire feeder about the work place only.

ELECTRIC SHOCK CAN KILL.

 

• Turn the input power OFF at the

When suspending a wire feeder, insulate the

disconnect switch or fuse box

hanging device from the wire feeder enclosure.

before attempting to connect or

HIGH FREQUENCY PROTECTION

disconnect input power lines, out-

put cables or control cables.

 

• Only qualified personnel should

CAUTION

perform this installation.

• Do not touch metal portions of the LN-25™ PRO

 

work clip when the welding power source is on.

Locate the LN-25™ PRO away from radio controlled

• Do not attach the work clip to the wire feeder.

machinery. The normal operation of the LN-25™

• Connect the work clip directly to the work, as

PRO may adversely affect the operation of RF con-

close as possible to the welding arc.

trolled equipment, which may result in bodily injury

• Turn power off at the welding power source

or damage to the equipment.

before disconnecting the work clip from the

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work.

 

• Only use on power sources with open circuit

WELD CABLE SIzE

voltages less than 110 VDC.

 

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LOCATION

For best wire feeding performance, place the LN- 25™ PRO on a stable and dry surface. Keep the wire feeder in a vertical position. Do not operate the wire feeder on an angled surface of more than 15 degrees.

Table A.1 Located below are copper cable sizes rec- ommended for various currents and duty cycles. Lengths stipulated are the distance from the welder to work and back to the welder again. Cable sizes are increased for greater lengths primarily for the purpose of minimizing voltage drop in the cables.

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Do not submerge the LN-25™ PRO.

TABLE A.1

RECOMMENDED CABLE SIzES (RUBBER COVERED COPPER - RATED 167°F or 75°C)**

 

 

CABLE SIZES FOR COMBINED LENGTHS OF ELECTRODE AND WORK CABLES

AMPERES

PERCENT

 

 

 

 

 

 

DUTY

0 to 50Ft.

50 to 100Ft.

100 to 150 Ft.

150 to 200 Ft.

200 to 250 Ft.

 

CYCLE

(0 to15m)

(15 to 30m)

(30 to 46m)

(46 to 61m)

(61 to 76m)

 

 

 

 

 

 

 

 

 

 

 

 

 

200

60

2

2

2

1

1/0

200

100

2

2

2

1

1/0

225

20

4 or 5

3

2

1

1/0

225

40 & 30

3

3

2

1

1/0

250

30

3

3

2

1

1/0

250

40

2

2

1

1

1/0

250

60

1

1

1

1

1/0

250

100

1

1

1

1

1/0

300

60

1

1

1

1/0

2/0

325

100

2/0

2/0

2/0

2/0

3/0

350

60

1/0

1/0

2/0

2/0

3/0

400

60

2/0

2/0

2/0

3/0

4/0

400

100

3/0

3/0

3/0

3/0

4/0

500

60

2/0

2/0

3/0

3/0

4/0

 

 

 

 

 

 

 

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

LN-25™ PRO

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Contents LN-25PRO Wire Feeder LN-25 PRO SafetyElectric Shock can kill ARC Rays can burn Welding Cutting For ElectricallyIii Sûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Table of Contents Installation Section Installation High Frequency Protection Safety PrecautionsLocation ELECTRIC SHOCK can KillCable Connections Wire Drive ConfigurationShielding GAS Connection Changing the GUN Receiver BushingWire Guides Procedure to Install Drive RollsPressure ARM Adjustment Loading Spools of WireGUN Connection Power Source to LN-25 PRO Cable Connection Diagrams Across the ARC SET-UPSDescription Figure A.7 Table of Contents Operation Section Operation Safety PrecautionsGeneral Description Wire Feed Speed Knob DescriptionAnalog Voltmeter Figure B.2 Wire Feed Speed, CC Operation See Figure B.2 orTable B.2 VV CC Wire Speed Setting Figure B-3 Constant Current VS Constant Voltage Wire WeldingWire Feed Speed Range Switch K2613-5 and K2613-7 only PIN GUN Trigger Connector See Figure B.1Work Sense Lead Thermal LED, Motor Overload See Figure B.1Figure B.4 Internal ControlsCV/CC Switch Step Trigger Interlock SwitchInternal Controls Description Cold Feed PushbuttonPreflow Timer Optional PREFLOW, Burnback Postflow Timer KIT K2330-2Figure B.5 Rear ControlsGAS Purge Pushbutton POWER-UP SequenceFlow Meter ScfhLN-25 PRO Table of Contents Accessories Section Factory Installed Equipment AccessoriesWire Type Drive Roll KitsAccessories Accessories K435 Spindle Adapter, for mounting Installation of the K590-6 Water Cooling KIT Table of Contents Maintenance Section Routine Maintenance MaintenancePeriodic Maintenance Calibration SpecificationWire Feed Speed CoverBoard Figure D.3. Major Component Location Control Board 1TABLE of CONTENTS-THEORY of Operation Section E-1Figure E.2 General Description Theory of OperationTRIGGER CIRCUIT Input PowerFigure E.4 Feedback & Control Circuits Feedback and Control CIR- CuitsFigure E.5 Optional Circuits & Digital Display Board Optional CircuitsLN-25 PRO Table of Contents Troubleshooting & Repair HOW to USE Troubleshooting Guide Troubleshooting & RepairPC Board Troubleshooting Procedures Fault Code Description Possible Adjustment Motor Solenoid Test Problems Symptoms Possible Areas MisadjustmentsRecommended Course of Action LN-25 PRO Case Removal Procedure Test DescriptionMaterials Needed Figure F.1 Case Removal ProcedureGAS Solenoid Test GAS Solenoid Control BOX Control BOX Cover Contactor Test Control BOX Contactor Drive Motor and Tach Feedback Test Case Control BOX Assembly Motor Overload Test Figure F.5 Control BOX Assembly Contactor Removal and Replacement Procedure Figure F.6 Control BOX Removal ProcedureFigure F.7 Buss BAR and Mounting Block Replacement ProcedureLN-25 PRO Front Panel Removal and Replacement Procedure Front Panel Troubleshooting & Repair Gas Hose Control BOX Wire Drive Panel Drive Gear Cover LN-25 PRO PC Board Removal and Replacement Procedure Figure F.11 Control PC Board Location PC BOARD Removal and Replacement ProcedureGAS Solenoid Removal and Replacement Procedure GAS Solenoid GAS Hose Control BOX Lock NUT Retest After Repair SET UPRetest a machine Operation VerificationLN-25 PRO Table of Contents Diagram Section Wiring Diagram LN-25 PRO WiriNG DiaGram lN-25 prO CODEs 11507, 11508 G5681-1 Wiring DIAGRAM- LN-25 PRO Analog WiriNG DiaGram lN-25 prO CODEs 11746, 11747 G5681-3 G5683 LN-25 PRO Wire FeederLN-25 PRO Wire Feeder ElECTriCal DiaGrams G5683-1 Pushbutton LN-25 PRO Analog G5683-2G5683 G5683-3 Circuitryconfidential Equipmenttype Xres RXD Work 624 4783-1C0 Flexiblepowerfeede R 50V OF05 Circuitryconfidential S27505-1B0 R2 CW