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OPTIMARC
Safety Depends on You
Lincoln
arc
welding
equipment is designed and built with
safety in mind. However, your overall
safety can be increased by proper
installation and thoughtful operation on
you part. DO NOT INSTALL, OPERATE
OR
REPAIR
THIS
WITHOUT READING THIS MENUAL
AND THE SAFETY PRECAUTIONS
CONTAINED
THROUGHOUT.
most importantly, think before you act
and be careful.
®
For use with machine Part Number K60108-1, Code 76251
and
cutting
EQUIPMENT
And,
• World's Leader in Welding and Cutting•
THE SHANGHAI LINCOLN ELECTRIC COMPANY
No. 195, Lane 5008, Hu Tai Rd. Baoshan, Shanghai, PRC 201907
www.lincolnelectric.com.cn
OPTIMARC
AC/DC 350-TP
Copyright © 2019 The Shanghai Lincoln Electric Company
®
AC/DC 350-TP
IM7024-1
Nov, 2019
Rev. 05
Rev. 05

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Summary of Contents for Lincoln Electric OPTIMARC AC/DC 350-TP

  • Page 1 And, most importantly, think before you act and be careful. Copyright © 2019 The Shanghai Lincoln Electric Company • World’s Leader in Welding and Cutting• THE SHANGHAI LINCOLN ELECTRIC COMPANY No. 195, Lane 5008, Hu Tai Rd. Baoshan, Shanghai, PRC 201907 www.lincolnelectric.com.cn...
  • Page 2 Thank you for selecting QUALITY Lincoln Electric products.  Please examine the packaging and equipment for damage. Claims for material damaged in shipment must be notified immediately to the authorized dealer from whom you purchased the machine.  For future reference, please record your equipment identification information in the table below. Model Name, Code &...
  • Page 3 SAFETY WARNING ARC WELDING CAN BE HAZARDOUS. PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH. KEEP CHILDREN AWAY. PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING. BE SURE THAT ALL INSTALLATION, OPERATION, MAINTENANCE AND REPAIR PROCEDURES ARE PERFORMED ONLY BY QUALIFIED INDIVIDUALS. ELECTRIC AND ELECTRIC SHOCK MAGNETIC FIELDS...
  • Page 4 SAFETY FUMES AND GASES WELDING SPARKS can be dangerous. can cause fire or explosion. 4.a Welding may produce fumes and gases hazardous to health. Avoid breathing these 6.a Remove fire hazards from the welding area. If fumes and gases. When welding, keep your this is not possible, cover them to prevent the head out of fume.
  • Page 5: Table Of Contents

    CONTENTS INSTALLATION ............................A-1 TECHNICAL SPECIFICATIONS –OPTIMARC ® AC/DC 350-TP ................A-1 SAFETY PRECAUTIONS ............................A-2 SELECT SUITABLE LOCATION ........................A-2 INPUT POWER AND GROUNDING CONNECTION ..................A-2 CABLE CONNECTIONS ........................... A-2 OPERATION…………………………………………………………………………………………………….B-1 GRAPHIC SYMBOLS THAT APPEAR ON THIS MACHINE OR IN THIS MANUAL ..........B-1 SAFETY PRECAUTIONS ............................
  • Page 6: Installation

    For any maintenance or repair operation it is recommended to contact the nearest technical service center or directly consult the machine division of the Shanghai Lincoln Electric. Maintenance or repairs performed by unauthorized service center or personnel will void the manufacturer’s warranty.
  • Page 7: Safety Precautions

    INSTALLATION refer to Figure A.1 on this page. SAFETY PRECAUTIONS Read the entire installation section before starting Make sure the amount of power available from the input installation. connection is adequate for normal operation of the WARNING machine. Refer to the Technical Specifications at the beginning of this Installation section for recommended ELECTRIC SHOCK can kill.
  • Page 8: Operation

    OPERATION GRAPHIC SYMBOLS THAT APPEAR ON THIS MACHINE OR IN THIS MANUAL HIGH FREQUENCY TOUGH START TIG SPOT TIG AC-SQUARE WAVE AC-TRIANGLE AC-SINE WAVE WAVE 2-STEP 2-STEP REPEAT 4-STEP 4-STEP REPEAT PULSE PULSE OFF LOW FREQUENCY PULSE SETTING HIGH FREQUENCY MEMORY SAVE PROCEDURE RECALL...
  • Page 9 OPERATION MMA WELDING WATER-COOLING SWITCH REMOTE CONTROL BRIGHTNESS CONNECTION CONNECTION NORMAL FAULTY WATER-COOLING SCREEN LOCKED PROTECTION OUTPUT IGBT OUTPUT IGBT TOP DOWN TUBE TUBE PROTECTION PROTECTION OVER/LOW OVER CURRENT VOLTAGE PROTECTION PROTECTION THERMAL RELAY PROTECTION PROTECTION MMA-SQUARE MMA-DC WAVE MMA-TRIANGLE MMA-SINE WAVE WAVE TIG-DC...
  • Page 10 OPERATION TIG-TRIANGLE TIG-SPOT WAVE ARC FORCE LANGUAGE Rev. 05 ® OPTIMARC AC/DC 350-TP...
  • Page 11: Safety Precautions

    OPERATION thermal protection symbol will be displayed on the SAFETY PRECAUTIONS screen. When the machine has been cooled to a safe Read this entire section of the operating temperature, the thermal protection symbol will disappear instructions before operating the machine. and the machine may resume normal operation.
  • Page 12: Rear Panel (See Figure

    OPERATION output signal - 7. COOLED WATER OUTLET Reserve Connected with water inlet of water-cooling TIG torch as Reserve being operated. 8. PROTECTIVE GAS OUTLET 15. GROUNDING CABLE CONNECTION Connected with gas inlet of TIG torch as being operated. Connect the grounding cable to the paint-free location on the case back.
  • Page 13: Output Waveforms

    OPERATION RECALLED FAULTS REMOTE LOCK PROCEDURE FUNCTION IDENTIFICATION SETTING NUMBER CONFIGURATION STATUS SCREEN WELDING STATUS WELDING CURRENT & VOLTAGE WELDING WAVEFORM CURRENT WELDING PARAMETER PARAMETERS SETTING WELDING OUTPUT CRATER PULSE SETTINGS MEMORY MODES WAVEFORMS MODES FIGURE B.3 OUTPUT WAVEFORMS Click the selector button (item 3 in FIGURE B.1), menu bar on the bottom will be selected with a black square The setup procedures are same as above.
  • Page 14 OPERATION 4-Step Brightness, the range is 1-10. The factory default setting is 7; Language, 0-English,1-Chinese. The 4-Step Repeat factory default setting is 0. You can refer to the ‘TIG Trigger Sequences’ in B-9 FACTORY section for more details. FUNCTION VALUE SETTING 0: OFF PULSE...
  • Page 15: Remote Setting Value

    OPERATION WELDING WAVEFORM It illustrates the welding parameters. For changing the welding parameter, choose the target parameter by It illustrates the various welding waveforms. rotating the selector button (the name and unit of parameter will be displayed on the ‘current parameter setting’...
  • Page 16: Tig Trigger Sequences

    OPERATION Release the TIG torch trigger. The machine will decrease the output current in downslope time, the output is turned OFF until reached the crater current. The gas valve will remain open to continue the flow Water-cooling protection of the shielding gas until post flow time is over. 2-Step Repeat Trigger Sequence With the 2-Step Repeat trigger mode and a TIG welding Output IGBT Top tube protection...
  • Page 17: 4-Step Repeat Trigger Sequence

    OPERATION B-10 B-10 When the TIG torch trigger is released, the output of the machine is turned OFF and the post flow time will start. The gas valve will remain open to continue the flow of the shielding gas until post flow time is over. 4-Step Repeat Trigger Sequence With the 4-step Restart trigger mode and a TIG welding mode selected, the following welding sequence will occur.
  • Page 18: List Of Parameters And Factory Configuration Program

    OPERATION B-11 B-11 List of parameters and Factory Configuration program: Min Step Factory Mode Parameter Name Selectable Value Range Setting Rate Pre-flow time 0.1~15S 0.1S 0.5S Initial current 0~200% (Percentage of the welding current) Upslope 0~15S 0.1S 0.5S 4~350A 150A Welding Current Downslope 0~15S...
  • Page 19: Troubleshooting

    TROUBLESHOOTING If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your local authorized Lincoln Electric CAUTION Field Service Facility for technical assistance. Observe all Safety Guidelines detailed in the beginning and throughout this menual.
  • Page 20 TROUBLESHOOTING If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your local authorized Lincoln Electric CAUTION Field Service Facility for technical assistance. Observe all Safety Guidelines detailed in the beginning and throughout this menual.
  • Page 21: Wiring Diagram

    WIRING DIAGRAM OPTIMARC AC/DC 350-TP EXPORT WIRING SCHEMATIC 221F 221G 220D 222A 221D 221E GND4 220D OUT+ 258 258 220C DIVIDER PANEL 220A 222B MAIN TRANSFORMER PRECHARGE BOARD POWER SWITCH 220D QC_1 J4-1 222A C8_P C7_P J4-4 222A STABILIZING ARC BOARD...
  • Page 22: Notes

    NOTES • World’s Leader in Welding and Cutting• THE SHANGHAI LINCOLN ELECTRIC COMPANY No. 195, Lane 5008, Hu Tai Rd. Baoshan, Shanghai, PRC 201907 www.lincolnelectric.com.cn Rev. 05 ® OPTIMARC AC/DC 350-TP...
  • Page 23 P‐7097 2017.10 Rev. 01 PARTS LIST FOR OPTIMARC® AC/DC 350‐TP...
  • Page 24 P‐7097 Rev. 01 PA‐1  ILLUSTRATION OF SUB‐ASSEMBLIES  Ⅴ Ⅱ Ⅳ Ⅰ Ⅲ OPTIMARC® AC/DC 350‐TP  2017.10 ...
  • Page 25 P‐7097 Rev. 01 PA‐2  OPTIMARC® AC/DC 350‐TP  For code: 76251, 76252  Do Not use this Parts List for a machine if its code number is not listed. For any code numbers not listed, contact the Service Department via:   china_service@lincolnelectric.com. Use the Illustration of Sub-Assemblies page and the table below to determine which sub assembly page and column the desired part is located on for your particular code machine.
  • Page 26 P‐7097 Rev. 01  PB‐1  Case Front Assembly  OPTIMARC® AC/DC 350‐TP  2017.10 ...
  • Page 27 P‐7097 Rev. 01  PB‐2  Case Front Assembly  ITEM DESCRIPTION PART NO. QTY. 76251 Case Front Welded Assembly G5874-12 76252 ST4.8x13 Hex Self Tapping Screw (Not Shown) S26738-2 Control Panel Decal G6082-55 Control Panel Decal G6082-56 AC/DC 350-TP Decal G6082-57 Knob T13639-6 Water Valve Assembly, Includes: M22042-7 Water Valve Connect Tube (with two 7/16-20 UNF Nuts)
  • Page 28 P‐7097 Rev. 01  PB‐3  Case Front Assembly    (Continued) ITEM DESCRIPTION PART NO. QTY. 76251 Dustproof Cover M25456-3 76252 M3x10 Combined Screw S28798-6 M4x8 Combined Screw S26641-38 M4 Plain Washer (Not Shown) S26638-2 M4 Lock Washer (Not Shown) S26639-2 Display Board Harness - J14 (Not Shown) G8305-4 Water Inlet Decal (Not Shown) S26743-22...
  • Page 29 P‐7097 Rev. 01  PC‐1  Divider Panel Assembly  OPTIMARC® AC/DC 350‐TP  2017.10 ...
  • Page 30 P‐7097 Rev. 01  PC‐2  Divider Panel Assembly  ITEM DESCRIPTION PART NO. QTY. 76251 Divider Panel G5926-11 76252 Grommet T12380-4 Rubber Bushing S26787-18 M5x12 Machine Screw (Not Shown) S26641-4 Pre-charge and Capacitor Assembly, Includes: M22737-1 Pre-charge and Capacitor Assembly, Includes: M22737-3 Capacitor Bracket M24711 Pre-charge Board G6811-1...
  • Page 31 P‐7097 Rev. 01  PC‐3  Divider Panel Assembly  (Continued) ITEM DESCRIPTION PART NO. QTY. 76251 Thermostat T13359-33 76252 Thermal Joint Compound E1868 (Not Shown) M3x6 Combined Screw (Not Shown) S28798-14 M5x16 Screw (Not Shown) S26641-36 M5x12 Combined Screw S28798-4 Choke M25155-3 M6x12 Combined Screw S28798-10 HF Board Box M24919-1...
  • Page 32 P‐7097 Rev. 01  PD‐1  Base & Center Assembly                    27b 27c       OPTIMARC® AC/DC 350‐TP        2017.10 ...
  • Page 33 P‐7097 Rev. 01  PD‐2  Base & Center Assembly    ITEM DESCRIPTION PART NO. QTY. 76251 Base G5872-5 76252 Copper Strap (#220, IGBT to Positive Terminal) S27092-8 Main Transformer L15759-5 M5x16 Combined Screw (Not Shown) S28798-5 M6 Plain Washer (Not Shown) S26638-8 Copper Strap (Main Transformer to Arc Start Coil) S27092-36 M8x25 Hex Head Screw S26641-8...
  • Page 34 P‐7097 Rev. 01  PD‐3  Base & Center Assembly  (Continued) ITEM DESCRIPTION PART NO. QTY. 76251 IGBT Module (MAGNACHIP) M22734-4 76252 M6x16 Combined Screw S28798-7 Thermal Joint Compound (Not Shown) Support Bracket (Left Heatsink Top) L13173-26 M5x12 Combined Screw S28798-4 Wind Shield (Left) M25150-5 AST4.2x13 Self Tapping Screw S26738-2...
  • Page 35 P‐7097 Rev. 01  PD‐4  Base & Center Assembly  (Continued) ITEM DESCRIPTION PART NO. QTY. 76251 Copper Strap S27092-37 76252 M8x25 Hex Head Screw (Not Shown) S26641-8 M8 Plain Washer (Not Shown) S26638-4 M8 Lock Washer (Not Shown) S26639-4 M8 Hex Nut (Not Shown) S26640-4 Output Rectifier Thermostat (Not Shown) T13359-26...
  • Page 36 P‐7097 Rev. 01  PE‐1  Case Back Assembly  OPTIMARC® AC/DC 350‐TP  2017.10 ...
  • Page 37 P‐7097 Rev. 01  PE‐2  Case Back Assembly    ITEM DESCRIPTION PART NO. QTY. 76251 Case Back Welded Assembly G5873-13 76252 ST4.8x13 Self Tapping Screw (Not Shown) S26738-2 Solenoid Valve (Gas) M22042-3 Plain Washer (Not Shown) S26638-6 Fan, Includes: M22731-3 Fan Capacitor (Not Shown) M22731-3-B M5x20 Hex Head Screw S26641-5...
  • Page 38 P‐7097 Rev. 01  PF‐1  Wraparound Assembly                      OPTIMARC® AC/DC 350‐TP        2017.10 ...
  • Page 39 P‐7097 Rev. 01  PF‐2  Wraparound Assembly  ITEM DESCRIPTION PART NO. QTY. 76251 Case Top G5878-5 76252 M5x12 Hex Washer Head Philips Screw (Not Shown) S26641-4 ST4.8x13 Hex Self Tapping Screw (Not Shown) S26738-2 Left Case Side G5879-7 M5x12 Hex Washer Head Philips Screw (Not Shown) S26641-4 ST4.8x13 Hex Self Tapping Screw (Not Shown) S26738-2...

This manual is also suitable for:

K60108-1Optimarc ac 350-tpOptimarc dc 350-tp

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