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RETURN TO MAIN MENU
IM10015
T T OMAHAWK
375 AIR
™
January, 2012
11579
For use with machines having Code Number:
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.
OPERATORʼS MANUAL
Copyright © Lincoln Global Inc.
• World's Leader in Welding and Cutting Products •
• Sales and Service through Subsidiaries and Distributors Worldwide •
Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com
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Summary of Contents for Lincoln Electric TOMAHAWK 375 AIR
- Page 1 RETURN TO MAIN MENU IM10015 T T OMAHAWK 375 AIR ™ January, 2012 11579 For use with machines having Code Number: 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 ...
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Page 2: Electric Shock Can Kill
SAFETY WARNING PLASMA CUTTING or GOUGING 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. Read and understand the following safety highlights. For additional safety information it is strongly recommended that you purchase a copy of “Safety in Welding &... - Page 3 SAFETY FOR ELECTRICALLY 4.c. When not cutting or gouging, make certain no part of the elec- trode circuit is touching the work or ground. Accidental contact powered equipment. can cause overheating and create a fire hazard. 6.a. Turn off input power using the disconnect 4.d.
- Page 4 NOTES...
- Page 5 SAFETY PRÉCAUTIONS DE SÛRETÉ 6. Eloigner les matériaux inflammables ou les recouvrir afin de prévenir tout risque dʼincendie dû aux étincelles. Pour votre propre protection lire et observer toutes les instructions et les précautions de sûreté specifiques qui parraissent dans ce 7.
- Page 6 Electric for advice or information about their use of our products. We respond to our customers based on the best information in our posses- sion at that time. Lincoln Electric is not in a position to warrant or guarantee such advice, and assumes no liability, with respect to such infor- mation or advice.
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Page 7: Table Of Contents
TABLE OF CONTENTS Page Installation........................Section A Technical Specifications .......................A-1 Safety Precautions .......................A-2 Select Proper Location ......................A-2 Stacking..........................A-2 Tilting ............................A-2 High Frequency Interference Protection................A-2 Input Electrical Connections ....................A-2 Gas Input Connections ......................A-3 Output Connections......................A-3 Torch ..........................A-3 Built-In Compressor ......................A-3 ________________________________________________________________________________ Operation.........................Section B Safety Precautions .......................B-1 Description ...........................B-1 Preheat Temperature for Plasma Cutting................B-1... -
Page 8: Installation
INSTALLATION TECHNICAL SPECIFICATIONS -TOMAHAWK™ 375 AIR INPUT - SINGLE PHASE 60 HERTZ Standard Voltage 208V, 230V ±10% / 1 / 60Hz RATED OUTPUT AT 40° C Duty Cycle CURRENT AMPS VOLTAGE VOLTS 100% 13 A 85.2 VDC 18 A 87.2 VDC 25 A 90 VDC OUTPUT... -
Page 9: Safety Precautions
INSTALLATION Read entire Installation Section before installing the HIGH FREQUENCY INTERFERENCE TOMAHAWK™ 375 AIR. PROTECTION The TOMAHAWK™ 375 AIR employs a touch start SAFETY PRECAUTIONS mechanism for arc initiation which eliminates high fre- quency emissions from the machine as compared with WARNING spark gap and solid state type high frequency genera- tors. -
Page 10: Gas Input Connections
INSTALLATION NOTE: When using nitrogen gas from a cylinder, the The following Lincoln engine drives meet these condi- cylinder must have a pressure regulator. tions when run in the high idle mode: Outback 180, Ranger 225, 250, 250LPG, 305G and •... -
Page 11: Operation
OPERATION DESCRIPTION SAFETY PRECAUTIONS WARNING The TOMAHAWK™ 375 AIR is a constant current, continuous control plasma cutting power source. It provides superior and reliable starting characteristics, ELECTRIC SHOCK cutting visibility and arc stability. The control system can kill. has a safety mechanism to insure that the nozzle and •... -
Page 12: User Responsibility
OPERATION USER RESPONSIBILITY Because design, fabrication, erection and cutting vari- ables affect the results obtained in applying this type of information, the serviceability of a product or struc- ture is the responsibility of the user. Variation such as plate chemistry, plate surface condition (oil, scale), plate thickness, preheat, quench, gas type, gas flow rate and equipment may produce results different than those expected. -
Page 13: Cutting Capability
It is recommended that consumables be replaced in standoff of 0.15".) complete sets. (Example: Electrode and Nozzle). This will maximize the performance of the TOMAHAWK™ 375 AIR system. Figure B.1 TOMAHAWK 375 AIR TOMAHAWK 375 AIR TOMAHAWK™ 375 AIR... -
Page 14: Limitations
OPERATION LIMITATIONS LEDs Description Output Thermal (Red) (Yellow) Do not exceed output current and duty cycle rating of The cutting torch is energized. machine. Do not use the TOMAHAWK™ 375 AIR for Part in place error: the retaining pipe thawing. cap is not properly Attached. -
Page 15: Cutting Process
OPERATION 5. Internal / External Air selection: This switch WARNING selects the air supply. With the Internal Compressor Clean, dry air must be supplied to the machine. A position selected, the machine operates through the pressure setting above 110 PSI (7.5 bar) could built-in compressor. - Page 16 OPERATION • Attach the work lead clamp to the workpiece before • Pierce the work piece by slowly lowering the torch cutting. onto the metal at a 30 angle away from the opera- tor. This will blow the dross away from the torch •...
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Page 17: Torch
OPERATION TORCH PROCEDURE RECOMMENDATIONS • During operation, if the Red and Yellow LEDʼs light When properly used, plasma arc cutting is a very eco- together: nomical process. Improper use will result in a very high operating cost. • Check the assembly of the torch consumables. If they are not properly in place, the machine will not General - In All Cases start. -
Page 18: Suggestions For Extra Utility From The Tomahawk™ 375 Air System
OPERATION Suggestions for Extra Utility from the • Set air pressure to recommended setting. A higher or lower pressure will cause turbulence TOMAHAWK™ 375 AIR System: in the plasma arc, eroding the orifice of the nozzle tip. WARNING ELECTRIC SHOCK CAN KILL. •... -
Page 19: Torch Part Configurations
Refer to the torch parts decal located on your machine or the parts pages at the back of this manual for the specific part numbers required for each of these setups. ALWAYS USE GENUINE LINCOLN ELECTRIC ELECTRODES, NOZZLES, AND EXPENDABLE PARTS FOR THE BEST CUTTING PERFOR- MANCE. -
Page 20: Accessories
ACCESSORIES GENERAL OPTIONS /ACCESSORIES The following options/accessories are available for your Tomahawk Plasma cutter from your local Lincoln Distributor. K2377-1 - Small Canvas Cover Protect your machine when not in use. Made from attractive red canvas that is flame retardant, mildew resistant and water repellent. -
Page 21: Maintenance
MAINTENANCE PERIODIC MAINTENANCE WARNING WARNING ELECTRIC SHOCK CAN KILL. • Have an electrician install and ser- ELECTRIC SHOCK CAN KILL. vice this equipment. • Turn off machine at the disconnect • Turn the input power off at the fuse switch on the rear of the machine box before working on equipment. -
Page 22: 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 23 TROUBLESHOOTING TOMAHAWK™ 375 AIR...
- Page 24 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual PROBLEMS POSSIBLE RECOMMENDED (SYMPTOMS) CAUSE COURSE OF ACTION 1. This may be normal. If output is Input circuit breaker trips repeatedly. set to maximum a 20 amp circuit is required. Technical Specification page.
- Page 25 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual PROBLEMS POSSIBLE RECOMMENDED (SYMPTOMS) CAUSE COURSE OF ACTION The TOMAHAWK™ 375 AIR powers 1. Turn the output knob to purge zone on the front of the TOMA- up properly but there is no response when the trigger is pulled and only HAWK™...
- Page 26 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual PROBLEMS POSSIBLE RECOMMENDED (SYMPTOMS) CAUSE COURSE OF ACTION When the trigger is pulled air begins 1. Check the torch consumables to be to flow, but there is no pilot arc after sure they are not dirty or greasy, at least 3 seconds.
- Page 27 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual PROBLEMS POSSIBLE RECOMMENDED (SYMPTOMS) CAUSE COURSE OF ACTION 1. Check work lead connection for Pilot arc starts but will not transfer clean, secure connection. when brought near work. 2. Plasma will only cut conductive material.
- Page 28 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual STATUS BOARD INDICATORS SYMPTOM CHECK When trigger is pulled Red output LED is 1. Make sure there is at least 80 psi connected to the gas connec- Blinking or steady with no air flow. tion at the back of the machine.
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Page 29: Wiring Diagrams
WIRING DIAGRAM ENHANCED DIAGRAM TOMAHAWK™ 375 AIR... - Page 30 Do not touch electrically live parts or Keep flammable materials away. Wear eye, ear and body protection. • • • WARNING electrode with skin or wet clothing. Insulate yourself from work and • ground. Spanish No toque las partes o los electrodos Mantenga el material combustible Protéjase los ojos, los oídos y el •...
- Page 31 Keep your head out of fumes. Turn power off before servicing. Do not operate with panel open or • • • WARNING Use ventilation or exhaust to guards off. • remove fumes from breathing zone. Spanish Los humos fuera de la zona de res- •...
- Page 32 • World's Leader in Welding and Cutting Products • • Sales and Service through Subsidiaries and Distributors Worldwide • Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com...