Gebruiksaanwijzing /service van het product IM909 van de fabrikant Lincoln Electric
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PRECISION TIG 375 OPERA T OR’S MANUAL IM909 November , 2006 Safety Depends on Y ou 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.
FOR ENGINE powered equipment. 1.a. T urn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running. ____________________________________________________ 1.b. Operate engines in open, well-ventilated areas or vent the engine exhaust fumes outdoors.
ii SAFETY ii ARC RA YS can burn. 4.a. Use a shield with the proper filter and cover plates to protect your eyes from sparks and the rays of the arc when welding or observing open arc welding. Headshield and filter lens should conform to ANSI Z87. I standards.
FOR ELECTRICALL Y powered equipment. 8.a. T urn 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. National Electrical Code, all local codes and the manufacturer ’s recommendations.
iv SAFETY iv PRÉCAUTIONS DE SÛRETÉ Pour votre propre protection lire et observer toutes les instructions et les précautions de sûreté specifiques qui parraissent dans ce manuel aussi bien que les précautions de sûreté générales suiv- antes: Sûreté Pour Soudage A L ’Arc 1.
v SAFETY v.
vi SAFETY vi.
vii vii Thank You for selecting a QUALITY product by Lincoln Electric. We want you to take pride in operating this Lincoln Electric Company product ••• as much pride as we have in bringing this product to you! Read this Operators Manual completely before attempting to use this equipment.
T ABLE OF CONTENTS Page . Installation ..........................................................................................................Section A T echnical Specifications ......................................................................
A-1 INST ALLA TION PRECISION TIG 375 A-1 TECHNICAL SPECIFICA TIONS- PRECISION TIG 375 (K1834-3 Export-50/60Hz) Max. Amps With Power Factor Capacitor 1 19/69/63 1 18/68/62 1 10/64/59 97/56/52 88/51/47 73/42/39 48/28/25 .
A-2 INST ALLA TION PRECISION TIG 375 A-2 ADDITIONAL OUTPUT CAP ACITY Output Current Range 2Amps DC to 420Amps AC-DC * T ype of Output CC (Constant Current) AC/DC (GT AW) Stick (SMA W) Maximum Open Cir.
A-3 INST ALLA TION PRECISION TIG 375 A-3 SAFETY PRECAUTIONS SELECT SUIT ABLE LOCA TION Place the welder where clean cooling air can freely cir- culate in through the top rear vents and out through the bottom rear vents. Dirt, dust or any foreign material that can be drawn into the welder should be kept at a minimum.
INPUT and GROUNDING CONNECTIONS Be sure the voltage, phase, and frequency of the input power is as specified on the rating plate, located on the rear of the machine. Remove the reconnect panel cover located near the back of the left case side to reveal the reconnect panel.
A-5 INST ALLA TION PRECISION TIG 375 A-5 Recommended Cable Sizes for Combined Lengths of Copper Work and Electrode Cables using 75 o C Wire: Machine Rating 0 to 100 Ft .
A-6 INST ALLA TION PRECISION TIG 375 A-6 TIG TORCH CONNECTION The Precision TIG torch connection box, located on the right side of the machine, provides all the input and output connections for the in.
A-7 INST ALLA TION PRECISION TIG 375 A-7 AUXILIAR Y POWER CONNECTIONS The Precision TIG machines provide a standard NEMA 5-15R duplex receptacle, located on the upper case back on the torch side of the machine: • The bottom outlet of this duplex receptacle provides switched 1 15V AC power for the Under-Cooler , or W ater Solenoid accessory .
A-8 INST ALLA TION PRECISION TIG 375 A-8 ROBOTIC INTERF ACE 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.
B-1 OPERA TION B-1 PRODUCT DESCRIPTION The Precision TIG 375 is part of a new family of indus- trial arc welding power sources providing constant cur- rent, single range square wave AC/DC TIG (GT A W) with new patented (pending) Micro-Start TM T echnology , Presettable Min.
B-2 OPERA TION B-2 RECOMMENDED PROCESSES AND EQUIPMENT RECOMMENDED PROCESSES The Precision TIG 375 is recommended for the TIG (GT AW) and Stick (SMA W) welding processes within its output capacity range of 2 amps DC, or 5 amps AC, to 420 amps AC/DC.
B-3 OPERA TION B-3 1. POWER SWITCH - Input line switch turns input power ON or OFF , as indicated by the on or off sta- tus of the front panel displays. 2. POLARITY SWITCH – The 3-position rotary power switch has detente positions for DC-, AC and DC+ selections for the Electrode output welding polarity .
B-4 OPERA TION B-4 • When the Polarity Switch is set to DC (- or +), the TIG mode provides high frequency only for starting. Hi-Freq. turns on after pre-flow time with the arc start switch closure, and turns off when the arc is established* • Also functions for DC+ polarity to permit "balling" of tungsten for AC TIG welding.
B-5 OPERA TION B-5 8. DIGIT AL METER AND DISPLA Y SWITCH – A3 - digit LED meter is used to monitor the preset and actual welding procedure based on the Display (momentary) switch position: • Befor.
B-6 OPERA TION B-6 • In 4-Step position allows welding without continu- ously holding the start switch trigger . The arc start switch functions in the following manner: 1. Closing switch starts preflow , then arc starts at Minimum (Start) setting level (See Item 7).
B-7 OPERA TION B-7 INTERNAL SET UP CONTROLS Precision TIG 375 Advanced Panel has the following additional control features which are set up using the DIP Switch (S1) provided on the internal panel of this option.
B-8 OPERA TION B-8 PRECISION TIG 375 ( With DIP Switch #2 ON , As Shi pp ed ) ( With DIP Switch #2 OFF ) FIGURE B.3.
B-9 OPERA TION B-9 PRECISION TIG 375 FIGURE B.4 ( With DIP Switch #3 OFF , As Shi pp ed ) ( With DIP Switch #3 ON ).
B-10 OPERA TION B-10 SETUP GUIDELINES FOR TIG WELDING WITH AN AMPTROL Both the Hand and Foot Amptrols work in a similar manner . They are meant to be used for remote current control for TIG welding using the machine ’ s 2-Step trigger mode (See Item 12).
B-11 OPERA TION B-11 PRECISION TIG 375 Max. to Min. Amptrol Min. to Max. Amptrol Setup for TIG Ampt rol Weld ing Advanced P anel (If used) Standard C ontrols Power Switch ON Polarity Switch AC or DC - Mode Switch TIG AC Balance AUTO or Set: More + for a lum.
B-12 OPERA TION B-12 PRECISION TIG 375 RECOMMENDED ELECTRODE AMPERAGE RANGES - Precision TIG 375 SMA W Process ELECTRODE POLARITY 3/32" 1/8" 5/32" Fleetweld 5P , Fleetweld 5P+ DC+ 40 - .
C-1 ACCESSORIES C-1 OPTIONAL EQUIPMENT F ACTOR Y INST ALLED OPTIONS The basic Precision TIG 375 machine is factory equipped with: • K1829-1 Precision TIG Advanced Control Panel. Provides 2/4-step trigger with adjustable Pulser con- trols and Down slope timer for TIG welding.
D-1 MAINTENANCE D-1 PRECISION TIG 375 ELECTRIC SHOCK can kill. • Only qualified personnel should perform this maintenance. • T urn the input power OFF at the disconnect switch or fuse box before working on this equipment. • Do not touch electrically hot parts.
D-2 MAINTENANCE D-2 SERVICE PROCEDURES 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.
DO NOT use a volt-ohm meter to measure output voltages in TIG mode. The High Frequency Arc Starter voltage can damage the meter . CAUTION E-1 TROUBLESHOOTING E-1 PRECISION TIG 375 If for any reason yo.
E-2 TROUBLESHOOTING E-2 PRECISION TIG 375 Observe all Safety Guidelines detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely , contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
E-3 TROUBLESHOOTING E-3 PRECISION TIG 375 Observe all Safety Guidelines detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely , contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
E-4 TROUBLESHOOTING E-4 PRECISION TIG 375 Observe all Safety Guidelines detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely , contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
E-5 TROUBLESHOOTING E-5 PRECISION TIG 375 Observe all Safety Guidelines detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely , contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
E-6 TROUBLESHOOTING E-6 PRECISION TIG 375 Observe all Safety Guidelines detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely , contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
E-7 TROUBLESHOOTING E-7 PRECISION TIG 375 Observe all Safety Guidelines detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely , contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.
F-1 WIRING DIAGRAM F-1 PRECISION TIG 375 NOTE: This diagram is for refer ence only . It may not be accurate for all machines covered by this manual. The specific diagram for a particular code is pasted inside the machine on one of the enclosure panels.
F-2 DIMENSION PRINT F-2 PRECISION TIG 375 L11660 XB-UF ** L OC ATIO N OF (4) O .28 4 BASE MOUNTING HOLES. 12.77 31.00 26.00 1.00 24.00 ** .28 3.47 20.50 * * 22.
NOTES.
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W ARNING A VISO DE PRECAUCION A TTENTION W ARNUNG A TEN ÇÃ O Spanish French German Portuguese Japanese Chinese Korean Arabic READ AND UNDERST AND THE MANUF ACTURER’S INSTRUCTION FOR THIS EQUIPMENT AND THE CONSUMABLES TO BE USED AND FOLLOW YOUR EMPLOYER’S SAFETY PRACTICES.
W ARNING A VISO DE PRECAUCION A TTENTION W ARNUNG A TEN ÇÃ O Spanish French German Portuguese Japanese Chinese Korean Arabic LEIA E COMPREENDA AS INSTRUÇÕES DO F ABRICANTE P ARA ESTE EQUIPAMENTO E AS P ARTES DE USO, E SIGA AS PRÁTICAS DE SEGURANÇA DO EMPREGADOR.
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