Lincoln Electric PRECISION TIG 375 Operator's Manual
  1. Manuals
  2. Brands
  3. Lincoln Electric Manuals
  4. Welding System
  5. Precision TIG 375
  6. Operator's manual
Lincoln Electric PRECISION TIG 375 Operator's Manual

Lincoln Electric PRECISION TIG 375 Operator's Manual

Hide thumbs Also See for PRECISION TIG 375:
Table of Contents

Advertisement

Quick Links

Download this manual
Operator's Manual
PRECISION TIG
Register your machine:
www.lincolnelectric.com/register
Authorized Service and Distributor Locator:
www.lincolnelectric.com/locator
Save for future reference
Date Purchased
Code:
(ex: 10859)
Serial:
(ex: U1060512345)
IM898
| Issue D ate Mar-17
© Lincoln Global, Inc. All Rights Reserved.
375
®
For use with machines having Code Numbers:
11161, 11162

Advertisement

Table of Contents
loading

Related Manuals for Lincoln Electric PRECISION TIG 375

Summary of Contents for Lincoln Electric PRECISION TIG 375

  • Page 1 Operator’s Manual PRECISION TIG ® For use with machines having Code Numbers: 11161, 11162 Register your machine: www.lincolnelectric.com/register Authorized Service and Distributor Locator: www.lincolnelectric.com/locator Save for future reference Date Purchased Code: (ex: 10859) Serial: (ex: U1060512345) IM898 | Issue D ate Mar-17 ©...
  • Page 2 THANK YOU FOR SELECTING A QUALITY PRODUCT BY KEEP YOUR HEAD OUT OF THE FUMES. DON’T get too close to the arc. LINCOLN ELEC TRIC. Use corrective lenses if necessary to stay a reasonable distance away from the arc. READ and obey the Safety Data PLEASE EXAMINE CARTON AND EQUIPMENT FOR Sheet (SDS) and the warning label DAMAGE IMMEDIATELY...
  • Page 3 MAGNETIC FIELDS MAY W117.2-1974. A Free copy of “Arc Welding Safety” booklet BE DANGEROUS E205 is available from the Lincoln Electric Company, 22801 St. Clair Avenue, Cleveland, Ohio 44117-1199. 2.a. Electric current flowing through any conductor BE SURE THAT ALL INSTALLATION, OPERATION, causes localized Electric and Magnetic Fields (EMF).
  • Page 4 S FETY ELECTRIC SHOCK ARC RAYS CAN BURN. CAN KILL. 3.a. The electrode and work (or ground) circuits are 4.a. Use a shield with the proper filter and cover plates to protect your electrically “hot” when the welder is on. Do eyes from sparks and the rays of the arc when welding or not touch these “hot”...
  • Page 5 S FETY WELDING AND CUTTING CYLINDER MAY EXPLODE IF SPARKS CAN CAUSE DAMAGED. FIRE OR EXPLOSION. 7.a. Use only compressed gas cylinders containing the correct shielding gas for the process used 6.a. Remove fire hazards from the welding area. If and properly operating regulators designed for this is not possible, cover them to prevent the welding sparks the gas and pressure used.
  • Page 6 We respond to our customers based on the best information in our possession at that time. Lincoln Electric is not in a position to warrant or guarantee such advice, and assumes no liability, with respect to such information or advice.

  • Page 7: Table Of Contents

    TAbLE OF CONTENTS Page. Installation ......................Section A Technical Specifications..................A-1,A-2 Safety Precautions ..............................Select Suitable Location..................A-3 Grinding......................... A-3 Stacking......................... A-3 Undercarriage Lifting and Moving................. A-3 Tilting........................A-3 Environmental Rating.................... A-3 Machine Grounding and High Frequency Interference Protection.......A-3, A-4 Input and Grounding Connections................
  • Page 8 INSTALLATION TECHNICAL SPECIFICATIONS-Precision TIG 375 (K2624-1 Domestic Package*-60Hz) ® (K2622-1 Domestic,K2622-2 Canadian-60Hz) RATED INPUT - SINGLE PHASE ONLY Duty Cycle-Applications Voltage + 10% Max. Amps With Power Factor Capacitor Number AC/DC Stick / Balance TIG 112/102/51 Unbalance (70% Penetration ) AC TIG 139/126/63 K2622-1 AC/DC Stick / Balance TIG...

  • Page 9: Installation

    INSTALLATION ADDITIONAL OUTPUT CAPACITY Output Current Maximum Open Type of Output Auxiliary Power Range Circuit Voltage 15Amp Circuit Breaker and NEMA 5-15R Duplex 2Amps DC Receptacle for up to: (STICK AND TIG) CC (Constant Current) AC/DC OCV: 80 115VAC 8 Amp Auxiliary Power Receptacle 420Amps AC-DC AC/DC (GTAW) 115VAC 5 Amp weld Switched Cooler Receptacle...

  • Page 10: Safety Precautions

    INSTALLATION SAFETY PRECAUTIONS ENVIRONMENTAL RATING Read entire installation section before starting Precision TIG 375 power sources carry an IP21S ® installation. Environmental rating. They are rated for use in damp, WARNING dirty rain-sheltered environments. MACHINE GROUNDING AND HIGH FRE- ELECTRIC SHOCK can kill. QUENCY INTERFERENCE PROTECTION •...

  • Page 11: Input And Grounding Connections

    INSTALLATION INPUT and GROUNDING CONNECTIONS 3. Be sure the torch and work cable rubber coverings are free of cuts and cracks that allow high frequency WARNING leakage. Cables with high natural rubber content, such as Lincoln Stable-Arc , better resist high fre- ®...

  • Page 12: Work Cable Connection

    INSTALLATION Welders are shipped connected for the highest input Recommended Cable Sizes for Combined Lengths of voltage as listed on the rating plate. To change this Copper Work and Electrode Cables using 75 C Wire: connection, designations on the reconnect panel LOW, MID, and HIGH correspond to the name plated input Machine Rating 0 to 100 Ft.

  • Page 13: Tig Torch Connection

    INSTALLATION FIGURE A.2 TIG TORCH REMOTE CONNECTION CONTROL P ANEL RECEPTACLE STICK STICK WORK WORK WORK STICK ELECTRODE STUD STUD (Shown without hinged s tud cover) FIGURE A CABLE STRAIN TIG TORCH CONNECTION RELIEF HOLES CYLINDER could explode if damaged. •...

  • Page 14: Auxiliary Power Connections

    INSTALLATION FIGURE A.3 For Gas Supply hose with 5/8-18RH male (Provided with Weld Package model) 1/2-13 For Coolant Supply Stud Hoses with 5/8-18LH male (Provided with Weld Package model Under-Cooler Cart) AUXILIARY POWER CONNECTIONS Export models also provide a The Precision TIG ®...

  • Page 15: Robotic Interface Connection

    INSTALLATION RObOTIC INTERFACE CONNECTION Robotic interface can be made at the Remote Receptacle (See Operation Section B-2). The machine is shipped with the remote receptacle circuit internally connected to receptacle J5 of the Control board for standard Amptrol operation. In order to enable the remote receptacle for robotic interface its connection plug must be moved from J5 to J5A on the Control board.

  • Page 16: Peration

    OPERATION SAFETY PRECAUTIONS PRODUCT DESCRIPTION Read and understand this entire section before operat- The Precision TIG 375 is part of a new family of indus- ® ing the machine. trial arc welding power sources providing constant cur- rent, single range square wave AC/DC TIG (GTAW) WARNING with patented Micro-Start II Technology, Presettable...

  • Page 17: Recommended Processes And Equipment

    OPERATION RECOMMENDED PROCESSES AND EQUIPMENT LIMITATIONS EQUIPMENT The Precision TIG machines are protected from over- ® loads beyond the electrical ratings and duty cycles, per the Specifications Section A-1, A-2, with Thermostat protection of the primary and secondary transformer coils. RECOMMENDED PROCESSES The Precision TIG 375 is recommended for the TIG...

  • Page 18: Controls And Settings

    OPERATION CONTROLS AND SETTINGS The Front Control Panel contains the knobs and switches necessary for adjusting the operation of the Precision 375, with function indicator lights and an electronic display for volts and amps. The components are ® described below: FIGURE b.1 - CONTROL PANEL 1.
  • Page 19 OPERATION • When the Polarity Switch is set to DC (- or +), the • With the Current Control switch to REMOTE posi- TIG mode provides high frequency only for starting. tion, this knob sets the maximum welding level that the Peak output can be set with the remote Amptrol.
  • Page 20 OPERATION 7a MENU bUTTON AND DISPLAY SWITCH – TIG Mode Menu (with Advanced Control Panel installed): Pressing and holding the (Menu) Button for about 5 Setting: Description: seconds enters the menu display which allows: HS (TIG Hot Start % of output setting) Selection 4: (Only setting for SS0, above.) election of up to seven programmable parameters...
  • Page 21 OPERATION 8. DIGITAL METER AND DISPLAY SWITCH– A (3- • When the Current Control Switch is in either LOCAL digit) LED meter is used to monitor the preset and or REMOTE positions the arc start switch functions actual welding procedure based on the Display when connected to the Remote receptacle.
  • Page 22 OPERATION • In 4-Step position allows welding without continu- 15. PULSE % ON / SPOT TIME CONTROL –This ously holding the start switch trigger. The arc start switch functions in the following manner: knob sets the time for Pulse or Spot modes: •...

  • Page 23: Internal Set Up Controls

    OPERATION INTERNAL SET UP CONTROLS TIG WELDING FEATURES Precision TIG 375 Advanced Panel has the following The following DIP switch feature selections function ® additional control features which are set up using the only when the Precision TIG is set to TIG mode (See ®...
  • Page 24 OPERATION FIGURE b.3 (With DIP Switch #2 OFF) (With DIP Switch #2 ON, As Shipped) PRECISION TIG ®...
  • Page 25 OPERATION b-10 b-10 FIGURE b.4 (With DIP Switch #3 ON) (With DIP Switch #3 OFF, As Shipped) PRECISION TIG ®...

  • Page 26: Setup Guidelines For Tig Welding With An Amptrol

    OPERATION b-11 b-11 TIG WELD CYCLE SEE ITEM 12 SEE ITEM 12 SEE ITEM 12 SEE ITEM 12 SEE ITEM 7a SEE ITEM 6 SEE ITEM 6 & 7 SEE ITEM 7 SEE ITEM 15 SEE ITEM 14 SEE ITEM 7 SEE ITEM 15 SEE ITEM 7a SEE ITEM 9...
  • Page 27 OPERATION b-12 b-12 FIGURE b.6 Setup for TIG Amptrol Welding Standard Controls Power Switch Mode Switch Polarity Switch AC Balance AUTO Set: More + for alum.oxide " Cleaning" w/o "Spitting" or " wetting" loss. Balanced for equal + and - current. More - for higher "...

  • Page 28: Making A Tig Weld With An Amptrol

    OPERATION b-13 b-13 MAKING A TIG WELD WITH AN AMPTROL Close the arc start switch. This opens the gas valve to automatically purge air from the hose and torch, then shields the arc strike area. After the 0.5 sec- 1. Install welding equipment per Section A-5. ond preflow time, the high frequency becomes available to strike the arc.

  • Page 29: Accessories

    ACCESSORIES OPTIONAL EQUIPMENT • K963-3 Hand Amptrol Fastens to torch for convenient thumb activation of FACTORY INSTALLED OPTIONS arc start switch and output control, with 25’ plug cable. The basic Precision TIG 375 machine is factory ® equipped with: • K814 Arc Start Switch •...

  • Page 30: Maintenance

    MAINTENANCE SAFETY PRECAUTIONS OVERLOAD PROTECTION WARNING FAN-AS-NEEDED (F.A.N.) The Precision TIG 375 has the F.A.N. circuit feature, ELECTRIC SHOCK can kill. ® which means the cooling fan will operate only while • Only qualified personnel should welding; then for about 8 minutes after welding has perform this maintenance.

  • Page 31: Under-Cooler Service

    MAINTENANCE SERVICE PROCEDURES FIGURE C.1 SPARK GAP Operation of the Precision TIG should be trouble-free ® for the life of the machine. Should a malfunction occur, however, the following procedures will be useful to trained service personnel with experience in repairing arc welding equipment: .015 Spark Gap COMPONENT ACCESS...

  • Page 32: Troubleshooting

    HOW TO USE TROUbLESHOOTING GUIDE WARNING Service and Repair should only be performed by Lincoln Electric Factory Trained Personnel. Unauthorized repairs performed on this equipment may result in danger to the technician and machine operator and will invalidate your factory warranty. For your safety and to avoid Electrical Shock, please observe all safety notes and precautions detailed throughout this manual.
  • Page 33 TROUbLESHOOTING Observe all Safety Guidelines detailed throughout this manual PRObLEMS POSSIbLE RECOMMENDED (SYMPTOMS) CAUSE COURSE OF ACTION OUTPUT PRObLEMS Thermal light comes on. 1. Thermal shut down. Dirt and dust may have clogged the cooling channels inside machine; air intake and exhaust louvers may be blocked.;...
  • Page 34 TROUbLESHOOTING Observe all Safety Guidelines detailed throughout this manual PRObLEMS POSSIbLE RECOMMENDED (SYMPTOMS) CAUSE COURSE OF ACTION METER PRObLEMS Meter does not light up. 1. Bad meter or its connection. 2. Bad connection at P8 of Control PC board. If all recommended possible areas misadjustment have been...
  • Page 35 TROUbLESHOOTING Observe all Safety Guidelines detailed throughout this manual PRObLEMS POSSIbLE RECOMMENDED (SYMPTOMS) CAUSE COURSE OF ACTION HI-FREQ PRObLEMS No hi-freq. 1. Circuit breaker CB1 open. 2. Bad connection at P12 of Control PC board. 3. Spark gaps shorted. 4. Faulty Control PC board. Hi-freq intensity too weak.
  • Page 36 TROUbLESHOOTING Observe all Safety Guidelines detailed throughout this manual PRObLEMS POSSIbLE RECOMMENDED (SYMPTOMS) CAUSE COURSE OF ACTION PRESET & OUTPUT CONTROL PRObLEMS Meter does not display preset. 1. Faulty potentiometer R1 or its con- nection. 2. Bad connection at P9 of Control PC board.
  • Page 37 TROUbLESHOOTING Observe all Safety Guidelines detailed throughout this manual PRObLEMS POSSIbLE RECOMMENDED (SYMPTOMS) CAUSE COURSE OF ACTION STICK WELDING PRObLEMS Stick electrode "blast off" when arc 1. Current may be set too high for is struck. electrode size. 2. (Machine with Advanced Control If all recommended possible areas PC board only) Hot Start Menu misadjustment...
  • Page 38 TROUbLESHOOTING Observe all Safety Guidelines detailed throughout this manual PRObLEMS POSSIbLE RECOMMENDED (SYMPTOMS) CAUSE COURSE OF ACTION TIG PRObLEMS Arc "pulsates" in AC polarity, DC 1. Micro switch S2A on polarity switch polarity is o.k. does not open in AC polarity. Black area along weld bead.

  • Page 39: Wiring Diagrams

    WIRING DIAGRAM PRECISION TIG ®...
  • Page 40 WIRING DIAGRAM PRECISION TIG ®...

  • Page 41: Dimension Prints

    DIMENSION PRINT PRECISION TIG ®...
  • Page 42 DIMENSION PRINT PRECISION TIG ®...
  • Page 43 Precision TIG 375 - 11162...
  • Page 44 Contents TIG Welders Precision TIG Precision TIG 375 - 11162 Index of Sub Assemblies - 11162..................1 Miscellaneous Items ......................3 Case Front Assembly ......................5 Control Panel Assembly ......................8 Arc Starter & Bypass Asbly ....................10 Case Back Assembly......................12 Center Assembly........................15 Cover Assembly.........................19...
  • Page 45 THIS PAGE INTENTIONALLY LEFT BLANK...

  • Page 46: Index Of Sub Assemblies - 11162

    PART NUMBER DESCRIPTION P-558-A INDEX OF SUB ASSEMBLIES P-558-B.2 MISCELLANEOUS ITEMS P-558-C CASE FRONT ASSEMBLY P-558-D CONTROL PANEL ASSEMBLY P-558-E ARC STARTER & BYPASS ASBLY P-558-F CASE BACK ASSEMBLY P-558-G CENTER ASSEMBLY P-558-H COVER ASSEMBLY Precision TIG 375 - 11162...
  • Page 47 Index of Sub Assemblies - 11162 P-558-A.jpg Precision TIG 375 - 11162...

  • Page 48: Miscellaneous Items

    BYPASS PC BD ASBLY 9SS19655-2 RECEPTACLE & LEAD ASBLY 9ST13657-3H24 LED FORMED 9ST13657-4FA YELLOW LED 9ST13657-2H24 LED-T-1 3/4REDHLMP-3301-F00dd 9SG5784 HARNESS ASBLY 9SS18543-4 INPUT CABLE GROMMET 9SG5699 HARNESS ASBLY 9SS18543-4 INPUT CABLE GROMMET 9ST12380-4 BUSHING 9ST12380-1 BUSHING Precision TIG 375 - 11162...
  • Page 49 Miscellaneous Items No Image Precision TIG 375 - 11162...

  • Page 50: Case Front Assembly

    POLARITY SWITCH ASBLY 9SCF000017 1/4-20HN 9ST9860-6 LOCKWASHER 9SS18234 POLARITY SWITCH JUMPER 9SCF000029 5/16-18HN 9SM15248 HANDLE-MOLDED 9SS9225-63 THREAD FORMING SCREW (CUTTING) 9SS18250-776 PLUG & LEAD ASBLY 9SCF000029 5/16-18HN 9SS9262-30 PLAIN WASHER 9SE106A-14 LOCKWASHER 9SG4763-1 CONTROL PC BD ASBLY Precision TIG 375 - 11162...
  • Page 51 PROTECTION PC BD ASBLY 9ST10082-27 SEMS SCREW 9SG4761-1 ADVANCED CONTROL PC BD ASBLY 9SS25391-1 OPTION PC BD MOUNTING PANEL 9SS19300-6 SUPPORTPCBSNAP-IN0.50 9SS25397 MICRO SWITCH BRKT 9ST12485-2 MICRO SWITCH 9SCF000138 #3-48X.875RHS-FULL-GR2 9SS9262-39 PLAIN WASHER 9ST4291-B LOCKWASHER 9SCF000139 #3-48HN-4265 Precision TIG 375 - 11162...
  • Page 52 Case Front Assembly P-558-C.jpg Precision TIG 375 - 11162...

  • Page 53: Control Panel Assembly

    9SL12959-1 PULSE PANEL HARNESS 9ST10812-119 POTENTIOMETER 9ST13657-3H24 LED FORMED 9ST13657-2H24 LED-T-1 3/4REDHLMP-3301-F00dd 9SS23093-1 LED LENS CLEAR 9SS18280 POTENTIOMETER SPACER 9ST13639-3 KNOB 9SS23094-1 RETAINING O RING 9ST10800-46 SWITCH;TOGGLESPDT 9ST9187-13 #10-24HLN-1817/1-NYLON INSERT 9SS9225-68 THREAD FORMING SCREW (CUTTING) Precision TIG 375 - 11162...
  • Page 54 Control Panel Assembly P-558-D.jpg Precision TIG 375 - 11162...

  • Page 55: Arc Starter & Bypass Asbly

    SEMS SCREW 9ST12380-3 BUSHING 9SS25215 HIGH FREQUENCY LEAD 9SS9262-98 PLAIN WASHER 9ST9695-17 LOCKWASHER 9SCF000017 1/4-20HN 9SS9225-68 THREAD FORMING SCREW (CUTTING) 9ST10812-99 RHEOSTAT 9SL13115 DECAL 9ST13639-3 KNOB 9SS9225-68 THREAD FORMING SCREW (CUTTING) 9SM19959 HIGH FREQUENCY INTENSITY BRACKET Precision TIG 375 - 11162...
  • Page 56 Arc Starter & Bypass Asbly P-558-E.jpg Precision TIG 375 - 11162...

  • Page 57: Case Back Assembly

    RIVET 9ST13259-2 GROUNDING DECAL 9SL13115 DECAL 9SS19450 BY-PASS ASBLY 9SL13115 DECAL 9SL13115 DECAL 9SS20580-1 BOX CONNECTOR 9SL11584 TORCH CONNECTION BOX COVER ASBLY 9SS8025-94 SELF TAPPING SCREW 9SS25305 MAGNETIC CATCH LATCH 9SL12925 TORCH CONNECTION BOX ASBLY Precision TIG 375 - 11162...
  • Page 58 PLAIN WASHER 9ST14370-1 CONDUIT LOCKNUT 9ST12380-8 BUSHING 9SM19793 TORCH CONNECTION PANEL 9SS9225-92 THREAD FORMING SCREWCUTTING(1/4-20X.50) 9ST12380-3 BUSHING 9SS15122-14 RELAY 9SS8025-115 SELF TAPPING SCREW 9ST14798-4 IDENTIFICATION STICKER (CR4) 9SG4079 HI-FREQ TRANSFORMER ASBLY 9SS21132-27 RATING PLATE 9SL13115 DECAL Precision TIG 375 - 11162...
  • Page 59 Case Back Assembly P-558-F.jpg Precision TIG 375 - 11162...

  • Page 60: Center Assembly

    LOCKWASHER 9SCF000067 3/8-16HN 9SS25387-1 HV TRANSFORMER & TERMINAL ASBLY 9ST14539 TRANSFORMER STANDOFF 9SS8025-100 SELF TAPPING SCREW 9ST11577-64 CAPACITOR PPMF 15 250 VAC. 10% FLXLD 9ST12563-21 LEAD CLAMP 9SS8025-92 SELF TAPPING SCREW 9SG3985 RECTIFIER HEATSINK ASBLY Precision TIG 375 - 11162...
  • Page 61 CARRIAGE BOLT 9ST9764-6 INSULATOR 9SS9262-98 PLAIN WASHER 9SE106A-2 LOCKWASHER 9SCF000017 1/4-20HN 9SS21170-3 SHUNT & LEAD ASBLY 9SCF000062 5/16-18X1.00HHCS 9SS9262-30 PLAIN WASHER 9SE106A-14 LOCKWASHER 9SCF000029 5/16-18HN 9SS10404-131 RESISTOR 9ST9781-34 THRU BOLT 9ST9764-6 INSULATOR 9SS9262-98 PLAIN WASHER Precision TIG 375 - 11162...
  • Page 62 LEAD-FLAT COPPER 9SCF000067 3/8-16HN 9SS9262-30 PLAIN WASHER 9SE106A-14 LOCKWASHER 9SCF000040 5/16-18X.75HHCS 9SS11604-48 SET SCREW 9ST13260-4 DECAL-EARTH GROUND CONN 9ST14530-1 RECEPTACLE 9ST12380-3 BUSHING 9SS22969-2 BYPASS ASBLY 9SCF000010 #10-24HN 9SS9225-68 THREAD FORMING SCREW (CUTTING) 9SS18922-6 GROUND SCREW ASBLY Precision TIG 375 - 11162...
  • Page 63 Center Assembly P-558-G.jpg Precision TIG 375 - 11162...

  • Page 64: Cover Assembly

    9SM19769 RECONNECT DOOR 9SS8025-94 SELF TAPPING SCREW 9SM19845 SPARK GAP DOOR 9SS8025-94 SELF TAPPING SCREW 9SL8064-1 WARNING DECAL (INTERNATIONAL) 9SG5694-1 WIRING DIAGRAM 9SS25247-1 INPUT CONNECTION DIAGRAM 9ST13086-172 DECAL-LINCOLN W/ NASCAR (LARGE) 9SL13115 DECAL 9SS22127-1 DECAL-WARRANTY Precision TIG 375 - 11162...
  • Page 65 Cover Assembly P-558-H.jpg Precision TIG 375 - 11162...
  • Page 66 WARNING Do not touch electrically live parts or Keep flammable materials away. Wear eye, ear and body protection. electrode with skin or wet clothing. Insulate yourself from work and AVISO DE ground. Spanish PRECAUCION No toque las partes o los electrodos Mantenga el material combustible Protéjase los ojos, los oídos y el bajo carga con la piel o ropa moja-...
  • Page 67 WARNING Keep your head out of fumes. Turn power off before servicing. Do not operate with panel open or Use ventilation or exhaust to guards off. remove fumes from breathing zone. AVISO DE Spanish PRECAUCION Los humos fuera de la zona de res- Desconectar el cable de ali- No operar con panel abierto o piración.
  • Page 68 We respond to our customers based on the best information in our possession at that time. Lincoln Electric is not in a position to warrant or guarantee such advice, and assumes no liability, with respect to such information or advice.

Table of Contents