Lincoln Electric SVM186-A - Manual

Lincoln Electric SVM186-A

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Table of Contents:

  • Page 2 – SAFETY; WARNING; CALIFORNIA PROPOSITION 65 WARNINGS; The Above For Diesel Engines
  • Page 3 – ii; ELECTRIC SHOCK can kill.
  • Page 4 – iii
  • Page 5 – iv; PRÉCAUTIONS DE SÛRETÉ
  • Page 6 – b) radio and television transmitters and receivers
  • Page 7 – Methods of Reducing Emissions
  • Page 8 – - MASTER TABLE OF CONTENTS FOR ALL SECTIONS -; RETURN TO MAIN INDEX; Page; RETURN TO MAIN MENU
  • Page 9 – TABLE OF CONTENTS - INSTALLATION SECTION
  • Page 10 – INSTALLATION; GTAW; INPUT - SINGLE PHASE ONLY; AC/DC Stick and Auto-Balance TIG Output Limits; Using provided input cable for protected; Output
  • Page 11 – PHYSICAL DIMENSIONS
  • Page 12 – SAFETY PRECAUTIONS; Read and follow; LIFTING AND MOVING; Accessories section; TILTING
  • Page 13 – INPUT AND GROUNDING CONNECTIONS; Technical Specifications
  • Page 14 – INPUT RECONNECT PROCEDURE; Included Equipment; CAUTION; FIGURE A.1 Reconnect Leads; OUTPUT CONNECTIONS; FIGURE A.2 Location of Output Connections
  • Page 15 – CONNECTIONS
  • Page 16 – NOTES
  • Page 17 – TABLE OF CONTENTS - OPERATION SECTION
  • Page 18 – OPERATION; have held combustibles.
  • Page 19 – PRODUCT DESCRIPTION; Built-in high frequency stabilization for DC TIG starting; RECOMMENDED PROCESSES; Installed Options; EQUIPMENT LIMITATIONS; rated output graph
  • Page 20 – Remote Receptacle; CONTROLS AND SETTINGS
  • Page 21 – Mode Switch
  • Page 22 – CASE REAR COMPONENTS; GAS INPUT CONNECTOR –; Air is drawn in through the; MACHINE RATING PLATE
  • Page 23 – OPERATING STEPS; WELDING IN TIG MODE
  • Page 24 – REMOTE CONTROL OPERATION; Accessories Section; BENEFITS OF THE PRECISION TIG® 225 DESIGN
  • Page 25 – WELDING IN STICK MODE; Put the electrode holder and cable quick connect; • In Stick Mode the output terminal; Adjust the Current Control to the desired amps.; RECOMMENDED ELECTRODE AMPERAGE RANGES - PRECISION TIG 225; SMAW Process
  • Page 27 – TABLE OF CONTENTS - ACCESSORIES SECTION
  • Page 28 – ACCESSORIES; STANDARD EQUIPMENT PACKAGES; Machine Only
  • Page 29 – FACTORY INSTALLED OPTIONS; Water Cooled System
  • Page 30 – FIELD INSTALLED OPTIONS; • K814 Arc Start Switch; assemblies and; • K2374-1 Electrode Holder and Cable
  • Page 31 – TABLE OF CONTENTS - MAINTENANCE SECTION
  • Page 32 – MAINTENANCE
  • Page 33 – TABLE OF CONTENTS-THEORY OF OPERATION SECTION; FIGURE E.1 PRECISION TIG® 225 BLOCK LOGIC DIAGRAM
  • Page 34 – THEORY OF OPERATION; GENERAL DESCRIPTION; INPUT POWER CIRCUIT
  • Page 35 – OUTPUT; The control board controls the firing of the
  • Page 36 – NOTE: Unshaded areas of Block Logic
  • Page 37 – DC WELDING OUTPUT; FIGURE E.5 DC Welding Current Generation.; CHOKE
  • Page 38 – AC WELDING OUTPUT; FIGURE E.6 AC Square Wave Welding Current Generation.
  • Page 39 – SCR OPERATION; An SCR is fired by a short burst of current into the gate.; FIGURE E.7 SCR Operation
  • Page 40 – PROTECTIVE CIRCUITS; THERMAL PROTECTION; OVER TEMPERATURE LIGHT-; OVERLOAD PROTECTION
  • Page 41 – TABLE OF CONTENTS - TROUBLESHOOTING AND REPAIR; Test Procedures
  • Page 42 – TROUBLESHOOTING AND REPAIR; HOW TO USE TROUBLESHOOTING GUIDE
  • Page 43 – PC board can be damaged by static electricity.; PC BOARD TROUBLESHOOTING PROCEDURES
  • Page 45 – The welding application may
  • Page 46 – The control board may be
  • Page 48 – Reconnect
  • Page 49 – SCR Bridge Test
  • Page 50 – Maintenance
  • Page 51 – Technical
  • Page 53 – The tungsten electrode may be
  • Page 55 – HIGH FREQUENCY CIRCUIT DISABLE PROCEDURE; TEST DESCRIPTION; HIGH VOLTAGE IS STILL PRESENT IN THE HIGH FREQUENCY CIRCUIT.
  • Page 56 – LEFT SIDE OF MACHINE; FIGURE F.1 – SPARK GAP ASSEMBLY; HIGH FREQUENCY CIRCUIT DISABLE PROCEDURE (continued); PROCEDURE
  • Page 57 – T1 TRANSFORMER TEST
  • Page 58 – Remove main supply power to the machine.; Plugs J3 & J4 on Control Board
  • Page 59 – Main
  • Page 61 – See; MATERIALS NEEDED; STATIC SCR TEST
  • Page 62 – PLUG J2 REMOVED; TEST PROCEDURE; Remove main supply power to the TIG 225 and; FIGURE F.3 – Plug J2 Location on Control Board
  • Page 63 – CASE COVER REMOVAL AND REPLACEMENT PROCEDURE (continued); Using an analog ohmmeter test the resistance; FIGURE F.4 – SCR TEST POINTS
  • Page 65 – ACTIVE SCR TEST
  • Page 66 – FIGURE F.5 – ACTIVE SCR TEST SETUP; Remove main supply power to the TIG 225
  • Page 67 – FIGURE F.6 – SCR GATE LOCATIONS
  • Page 69 – SCOPE SETTINGS; volts; HIGH VOLTAGE / HIGH FREQUENCY can damage test equipment.
  • Page 70 – NORMAL OPEN CIRCUIT VOLTAGE WAVEFORM
  • Page 73 – Note that each vertical division; TYPICAL OUTPUT VOLTAGE WAVEFORM - MACHINE LOADED; AC TIG MODE
  • Page 74 – MACHINE LOADED TO 180 AMPS AT 16VDC.; DC TIG MODE
  • Page 75 – TYPICAL OUTPUT VOLTAGE WAVEFORM; AC STICK MODE
  • Page 76 – DC STICK MODE
  • Page 77 – ABNORMAL OPEN CIRCUIT VOLTAGE - DC TIG MODE
  • Page 79 – SCR BRIDGE ASSEMBLY
  • Page 80 – FIGURE F.7 – CASE BACK MOUNTING SCREWS
  • Page 81 – FIGURE F.8 – FRONT PANEL MOUNTING SCREWS
  • Page 82 – FIGURE F.9 – PLUG J2 ON CONTROL BOARD; FIGURE F.10 DIODE PIGTAIL CONNECTION TO POLARITY SWITCH LEAD.
  • Page 83 – REPLACEMENT PROCEDURE
  • Page 85 – POLARITY SWITCH
  • Page 86 – REMOVAL PROCEDURE
  • Page 89 – HIGH VOLTAGE TRANSFORMER
  • Page 90 – FIGURE F.11 – SECONDARY LEADS AT HIGH FREQUENCY STARTER BOARD
  • Page 91 – FIGURE F.12 – HIGH VOLTAGE TRANSFORMER MOUNTING INSULATORS
  • Page 93 – MAIN TRANSFORMER AND OUTPUT CHOKE ASSEMBLY
  • Page 94 – SCR Bridge Assembly Removal; SCR
  • Page 95 – RETEST AFTER REPAIR; Maximum Idle Amps
  • Page 97 – TABLE OF CONTENTS - DIAGRAM SECTION
  • Page 98 – ELECTRICAL DIAGRAMS; VOLTAGE RECONNECTION
  • Page 103 – COMPONENT SIDE
  • Page 105 – BYPASS/STABILIZER BOARD; NONE; MATERIAL; NA; DOCUMENT
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For use with machine code numbers:

SVM186-A

October, 2008

Safety Depends on You

Lincoln arc welding and cutting
equipment is designed and built
with safety in mind.

However,

your

overall

safety

can

be

increased by proper installation
. . . and thoughtful operation on
your part.

DO NOT INSTALL,

OPERATE OR REPAIR THIS
EQUIPMENT WITHOUT READ-
ING THIS MANUAL AND THE
SAFETY PRECAUTIONS CON-
TAINED THROUGHOUT.

And,

most importantly, think before you
act and be careful.

SERVICE MANUAL

PRECISION TIG

225

Return

to

Master

T

OC

Return

to

Master

T

OC

Return

to

Master

T

OC

Return

to

Master

T

OC

V

iew

Safety

Info

V

iew

Safety

Info

V

iew

Safety

Info

V

iew

Safety

Info

RETURN TO MAIN INDEX

• Sales and Service through Subsidiaries and Distributors Worldwide •

Cleveland, Ohio 44117-1199 U.S.A. TEL: 1.888.935-3877 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com

• World's Leader in Welding and Cutting Products •

Copyright © Lincoln Global Inc.

11317, 11318, 11319
(11320 Ready-Pak)
(11321 Ready-Pak w/Cart)

®

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Summary

Page 2 - SAFETY; WARNING; CALIFORNIA PROPOSITION 65 WARNINGS; The Above For Diesel Engines

Return to Master T OC Return to Master T OC Return to Master T OC Return to Master T OC SAFETY i i FOR ENGINEpowered equipment. 1.a. Turn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running. ________________________________________________...

Page 3 - ii; ELECTRIC SHOCK can kill.

SAFETY ii ii Return to Master T OC Return to Master T OC Return to Master T OC Return to Master T OC FUMES AND GASEScan be dangerous. 5.a. Welding may produce fumes and gases hazardous to health. Avoid breathing thesefumes and gases.When welding, keepyour head out of the fume. Use enoughventilation ...

Page 4 - iii

SAFETY iii iii Return to Master T OC Return to Master T OC Return to Master T OC Return to Master T OC Jan ‘07 FOR ELECTRICALLYpowered equipment. 8.a. Turn off input power using the disconnect switch at the fuse box before working on the equipment. 8.b. Install equipment in accordance with the U.S. ...

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