Lincoln Electric SVM186-A OUTPUTCONNECTIONS

INSTALLATION

A-6 A-6

PRECISION TIG® 225

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC

INPUT RECONNECT PROCEDURE

Onmultiple input voltage welders, be sure the machine

is connected per the following instructions for the volt-

age being supplied to the welder.

Failure to follow these instructions can cause

immediatefailureofcomponentswithinthewelder

and void machineʼs warranty.

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

Multiplevoltagemodelsareshipped connected for

the highest voltage. To change this connection

refer to the following instructions.

ELECTRIC SHOCK can kill.

• Turnthe input power OFF at the dis-

connect switch or fuse box before

working on this equipment.

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

For the lowest rated voltage connection (Refer to figure A.1):

1. Remove the sheet metal left side cover.

2. Disconnect lead H3 from the power switch and insu-

late with the insulation from the H2 lead.

3. Connect lead H2 to the power switch where H3 was

connected.

4. Tighten connections.

5. Replace sheet metal cover and all screws

For the highest rated voltage connection (Refer to Figure A.1):

The machine is normally shipped connected for the

highest rated voltage, however verify the following:

1. Remove the sheet metal left side cover.

2. Disconnect lead H2 from the power switch and insu-

late with the insulation from the H3 lead.

3. Connect lead H3 to the line switch where H2 was

connected.

4. Tighten connections.

5. Replace sheet metal cover and all screws.

CONNECTIONS FOR TIG (GTAW)WELDING

TIG TORCH CONNECTION

Refer to Included Equipment in the Operation

Section of this manual for TIG welding equipment

which is included with the PRECISION TIG® 225.

CAUTION

WARNING

FIGUREA.1ReconnectLeads

INPUTLEADSINPUT LEADS

L1& L2L1 & L2

LEADH1LEAD H1

(DONOT(DO NOT

REMOVE)REMOVE)

FORLOWEST RATED VOLTAGEFOR LOWEST RATED VOLTAGE

:H2 CONNECTED : H2 CONNECTED

FORHIGHEST RATED VOLTAGEFOR HIGHEST RATED VOLTAGE

:H3 CONNECTED : H3 CONNECTED

BACKVIEW OF LINE SWITCHBACK VIEW OF LINE SWITCH

OUTPUTCONNECTIONS

FIGUREA.2LocationofOutputConnections

ELECTRODE/GAS

OUTLET

RECEPTACLE

(TWIST-MATE)

WORKCABLE & CLAMP

Contents

Main SVM186-A SERVICE MANUAL PRECISION TIG 225 i i FOR ENGINE powered equipment. Mar 95 WARNING ELECTRIC AND MAGNETIC FIELDS may be dangerous ii ii FUMES AND GASES can be dangerous. Aug 06 ARC RAYS can burn. ELECTRIC SHOCK can kill. iii iii FOR ELECTRICALLY powered equipment. CYLINDER may explode if damaged. WELDING and CUTTING SPARKS can cause fire or explosion. iv iv Mar 93 PRCAUTIONS DE SRET PRCAUTIONS DE SRET POUR LES MACHINES SOUDER TRANSFORMATEUR ET REDRESSEUR Page Electromagnetic Compatibility (EMC) - MASTER TABLE OF CONTENTS FOR ALL SECTIONS - RETURN TO MAIN MENU TABLE OF CONTENTS - INSTALLATION SECTION TECHNICAL SPECIFICATIONS - PRECISION TIG 225 (K2533-1AND K2535-1,-2) INPUT - SINGLE PHASE ONLY OUTPUT RANGE RATED OUTPUT AC/DC Stick and Auto-B alance TIG Output L imits TECHNICAL SPECIFICATIONS - CANADIAN (K2533-2), INTERNATIONALK2534-1) PHYSICAL DIMENSIONS ENVIRONMENTALRANGES OUTPUT RANGE RATED OUTPUT K2533-2 INPUT (at Rated Output) SAFETYPRECAUTIONS SELECT SUITABLE LOCATION MOUNTING LIFTING AND MOVING TILTING MACHINE GROUNDING AND HIGH FRE- QUENCY INTERFERENCE PROTECTION INPUT AND GROUNDING CONNECTIONS INPUT RECONNECT PROCEDURE CONNECTIONS FOR TIG (GTAW)WELDING FIGUREA.1ReconnectLeads OUTPUTCONNECTIONS FIGUREA.2LocationofOutputConnections CONNECTIONS FOR TIG (GTAW)WELDING CONNECTIONS FOR STICK (SMAW) WELDING Page TABLE OF CONTENTS - OPERATION SECTION SAFETYPRECAUTIONS PRODUCT DESCRIPTION RECOMMENDED PROCESSES AND EQUIP- MENT WELDING CAPABILITY(Duty Cycle) CONTROLSAND SETTINGS POWER-UPSEQUENCE Page OPERATING STEPS Page RECOMMENDEDELECTRODEAMPERAGERANGES -PRECISION TIG 225 Page Page STANDARD EQUIPMENT PACKAGES FACTORYINSTALLED OPTIONS FIELD INSTALLED OPTIONS Page MAINTENANCE SAFETYPRECAUTIONS WARNING WARNING TABLE OF CONTENTS-THEORY OF OPERATION SECTION E-1 E-1 INPUT POWER SWITCH MAIN TRANSFORMER POLARITY SWITCH GENERALDESCRIPTION INPUT POWER CIRCUIT OUTPUT RECTIFICATION AND FEEDBACK CONTROL E-4 E-4 HIGHVOLTAGE/ HIGH FREQUENCY CIRCUIT FIGURE E.2 - High Voltage/HighFrequency Circuit. NOTE: Unshaded areas of Block Logic Diagram are the subject of discussion INPUT POWER SWITCH MAIN TRANSFORMER DC WELDING OUTPUT AC WELDING OUTPUT SCROPERATION PROTECTIVE CIRCUITS THERMALPROTECTION OVERLOAD PROTECTION 115 VACRECEPTACLE TABLE OF CONTENTS - TROUBLESHOOTING AND REPAIR HOW TO USE TROUBLESHOOTING GUIDE PC BOARD TROUBLESHOOTING PROCEDURES Page Page Page Page Page Page Page Page WARNING Page Page HIGH FREQUENCY CIRCUIT DISABLE PROCEDURE HIGH FREQUENCY CIRCUIT DISABLE PROCEDURE (continued) LEFT SIDE OF MACHINE T1 TRANSFORMER TEST Page T1 TRANSFORMER TEST (continued) Page STATICSCR TEST PLUG J2 REMOVED STATICSCR TEST (continued) TEST PROCEDURE CASE COVER REMOVALAND REPLACEMENT PROCEDURE (continued) TEST PROCEDURE (continued) Page ACTIVE SCR TEST ACTIVE SCR TEST (continued) TEST PROCEDURE ACTIVE SCR TEST (continued) TEST PROCEDURE (continued) Page AC TIG MODE DC TIG MODE AC STICK MODE DC STICK MODE AC TIG MODE DC TIG MODE AC STICK MODE DC STICK MODE ABNORMAL OPEN CIRCUIT VOLTAGE- DC TIG MODE ONE OUTPUT SCR NOT FUNCTIONING Page Page Page PROCEDURE (continued) FRONT PANEL MOUNTING SCREWS PLUG J2 REMOVED Page Page POLARITY SWITCH Page POLARITYSWITCH Page Page TRANSFORMER SECONDARY LEADS Page Page Page MAIN TRANSFORMER AND OUTPUT CHOKE ASSEMBLY NOTES RETEST AFTER REPAIR Page TABLE OF CONTENTS - DIAGRAM SECTION ELECTRICAL DIAGRAMS WIRING DIAGRAM - COMPLETE MACHINE - ALL CODES (G5646) IEW) V PTAC ELECTRICAL DIAGRAMS SCHEMATIC - COMPLETE MACHINE -ALL CODES (G5647) GangF Gang G Page Page Page ELECTRICAL DIAGRAMS PC BOARD ASSEMBLY- CONTROL #1 (G5641) 2 3 4 5 COMPONENT SIDE CONTROL ELECTRICAL DIAGRAMS PC BOARD ASSEMBLY- CONTROL #2 (G5641) OPPOSITE COMPONENT SIDE X XXX S22530-1B0 08/26/2002 NA CRM34563 ION: IT S22530-1B0 MATERIAL DISPOS APPROVAL DATE: PROJECT NUMBER: 1 ELECTRICAL DIAGRAMS PC BOARD ASSEMBLY - BYPASS (L10121) ATI NFORM I