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POWERTORCH™ PLASMA 20
For use with machines having Code Number:
This manual covers equipment which is no
longer in production by The Lincoln Electric Co.
Speci cations and availability of optional
features may have changed.
Safety Depends on You
Harris arc welding and cutting
equipment is designed and built
with safety in mind. However, your
overall safety can be increased by
proper installation ... and thought-
ful operation on your part. DO
NOT INSTALL, OPERATE OR
REPAIR THIS EQUIPMENT
WITHOUT
READING
MANUAL AND THE SAFETY
PRECAUTIONS CONTAINED
THROUGHOUT.
nd, most
importantly, think before you act
and be careful.
Gainesville, GA 30504-6000 U.S.A. TEL: 866.236.0044 FAX: 800.840.8684
11453
THIS
OPERATOR'S MANUAL
Copyright © Lincoln Global Inc.
IM944
December, 2008

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Summary of Contents for Harris POWERTORCH PLASMA 20

  • Page 1 The Lincoln Electric Co. Speci cations and availability of optional features may have changed. Safety Depends on You Harris arc welding and cutting equipment is designed and built with safety in mind. However, your overall safety can be increased by proper installation ...
  • Page 2 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 pur- chase 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- powered equipment. trode circuit is touching the work or ground. Accidental contact can cause overheating and create a fire hazard. 6.a. Turn off input power using the disconnect 4.d.
  • Page 4 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 5 for selecting one of our QUALITY products. We want you to take pride in operating this product ••• as much pride as we have in T T h h a a n n k k Y Y o o u u bringing this product to you! CUSTOMER ASSISTANCE POLICY The business of our company is manufacturing and selling high quality welding equipment.
  • Page 6: 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 Compressed Air or Gas Input Connections ................A-3 Connections to Ground Cable ....................A-3 Torch Connections .......................A-3 ________________________________________________________________________________ Operation.........................Section B Safety Precautions .......................B-1...
  • Page 7: Installation

    INSTALLATION TECHNICAL SPECIFICATIONS - POWERTORCH™ PLASMA 20 (K2682-1) INPUT - SINGLE PHASE Standard Voltage 1Ø Input Current at Rated Output 115/1/50/60Hz (15 Amp Branch) 115 V: 20A @ 50% 115 V: 26A @ 40% 115/1/50/60Hz (20 Amp Branch with 20 Amp Plug*) RATED OUTPUT Duty Cycle AMPS...
  • Page 8: Safety Precautions

    INSTALLATION Read entire Installation Section before installing the (1) Make sure the power supply chassis is connected POWERTORCH™ PLASMA 20. to a good earth ground. The work terminal ground does NOT ground the machine frame. SAFETY PRECAUTIONS (2) Keep the work clamp isolated from other work clamps that have high frequency.
  • Page 9: Compressed Air Or Gas Input Connections

    INSTALLATION WARNING Use of normal 20 amp household breakers may result in over current trips. If breaker trips occur, reduce the cutting current output until nuisance trips stop. CYLINDER could explode if damaged. COMPRESSED AIR OR GAS INPUT • Keep cylinder upright and CONNECTION chained to a fixed support.
  • Page 10: Operation

    OPERATION DESCRIPTION SAFETY PRECAUTIONS WARNING The POWERTORCH™ PLASMA 20 is a constant cur- rent, continuous control plasma cutter power source. ELECTRIC SHOCK The POWERTORCH™ PLASMA 20 comes standard can kill. with an air regulator and pressure gauge. The unit is •...
  • Page 11: User Responsibility

    OPERATION USER RESPONSIBILITY CONTROLS AND SETTINGS Variation such as plate chemistry, plate surface condi- tion (oil, scale), plate thickness, preheat, quench, gas type, gas flow rate and equipment may produce results different than those expected. Some adjust- ments to procedures may be necessary to compen- sate for unique individual conditions.
  • Page 12: Cutting Operations

    OPERATION CUTTING OPERATIONS CHECKING AIR QUALITY BEFORE CUTTING To check air quality, deactivate the torch (post-flow) and place a welding filter lens in front of the torch. Any WARNING oil or moisture in the air will be visible on the lens. DO NOT initiate pilot arc while checking air quality.
  • Page 13: Safety Precautions

    OPERATION NOTE: For better torch control, it is acceptable to let • When ready to cut, place the torch near the work, the nozzle drag along the work piece surface. This make certain all safety precautions have been taken will shorten nozzle life. Also, it is acceptable to place and pull the trigger.
  • Page 14: Pilot Arc Discussion

    NOTES PILOT ARC DISCUSSION The POWERTORCH™ PLASMA 20 has a smooth, contin- uous pilot arc. The pilot arc is only a means of transferring the arc to the workpiece for cutting. Repeated pilot arc starts, in rapid succession, is not recommended as these starts will generally reduce consumable life.
  • Page 15: Torch Consumable Parts Selection

    OPERATION OPERATING FAULTS WARNING ELECTRIC SHOCK CAN KILL. During cutting operations performance faults may • Disconnect input power by remov- arise, such as: ing the plug from the receptacle before assembling or disassembling • Insufficient penetration: torch parts, or torch and lead too high cutting speed;...
  • Page 16: Maintenance

    MAINTENANCE PERIODIC MAINTENANCE WARNING WARNING ELECTRIC SHOCK can kill. ELECTRIC SHOCK CAN KILL. • Have a qualified person service this • Turn off machine and disconnect equipment. input power by removing the plug • Turn off machine and disconnect from the receptacle before tighten- input power by removing the plug ing, cleaning or replacing consum- from the receptacle before working...
  • Page 17: Compressed Air Filter

    MAINTENANCE COMPRESSED AIR FILTER The unit is supplied with a filter for the compressed air and fitted with a manual drain for condensation. (Drain is located on the bottom of the filter). Purge periodical- ly to remove the water in the filter by opening the drain knob.
  • Page 18: Troubleshooting

    TROUBLESHOOTING HOW TO USE TROUBLESHOOTING GUIDE WARNING Service and Repair should only be performed by 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 19 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual PROBLEMS POSSIBLE RECOMMENDED (SYMPTOMS) CAUSE COURSE OF ACTION GREEN LED OFF, Fan not operat- 1. Plug unit into 115V outlet. ing. No Input Power. 2. Reset Breaker. GREEN LED ON, YELLOW 1.
  • Page 20: Wiring Diagrams

    WIRING DIAGRAM POWERTORCH™ PLASMA 20...
  • Page 21 NOTES POWERTORCH™ PLASMA 20...
  • Page 22 WARNING Do not touch electrically live parts or Keep flammable materials away. Wear eye, ear and body protection. electrode with skin or wet clothing. AVISO DE Insulate yourself from work and 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 23 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. AVISO DE remove fumes from breathing zone. Spanish PRECAUCION Los humos fuera de la zona de res- Desconectar el cable de ali- No operar con panel abierto o piración.
  • Page 24 Gainesville, GA 30504-6000 U.S.A. TEL: 866.236.0044 FAX: 800.840.8684...

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