Lincoln Electric SVM149-A - Manuals

Page 2 - PERFORMED ONLY BY QUALIFIED INDIVIDUALS.; ELECTRIC SHOCK can kill.; PLASMA CUTTING or GOUGING can be hazardous.; SAFETY

Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH. KEEP CHILDRENAWAY. PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING. Read and understand the following safety highlights. For ...

Page 3 - ii

Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC 4.c. When not cutting or gouging, make certain no part of the elec- trode circuit is touching the work or ground. Accidental contactcan cause overheating and create a fire hazard. 4.d. Do not cut or gouge tanks, ...

Page 4 - iii; PRÉCAUTIONS DE SÛRETÉ

SAFETY iii iii Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC 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...

Page 5 - MASTER TABLE OF CONTENTS FOR ALL SECTIONS; iv; Page

MASTER TABLE OF CONTENTS FOR ALL SECTIONS iv iv PRO-CUT 25 Page Safety .................................................................................................................................................i-iii Installation ....................................................................

Page 6 - NOTES

PRO-CUT 25 Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC NOTES

Page 7 - TABLE OF CONTENTS; Installation

TABLE OF CONTENTS - INSTALLATION SECTION - Section A-1 Section A-1 PRO-CUT 25 Installation Technical Specifications .............................................................................................................A-2 Safety Precautions........................................................

Page 8 - INSTALLATION; * Included with machine

INSTALLATION A-2 A-2 PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Weight Including Torch Cable 35 lbs. 15.9 kg. INPUT - SINGLE PHASE / 60 HERTZ ONLY RATED...

Page 9 - SAFETY PRECAUTIONS; Do not touch electrically hot parts.; SELECT PROPER LOCATION; STACKING; (1) Make sure the power supply chassis is connected; INPUT ELECTRICAL CONNECTIONS

INSTALLATION A-3 A-3 PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Read entire Installation Section before installing thePRO-CUT 25. SAFETY PRECAUTIONS ELE...

Page 10 - • Failure to wire as instructed may cause personal; GAS INPUT CONNECTIONS; NOTE: Oil in the air supply to the PRO-CUT 25 can; WARNING

INSTALLATION A-4 A-4 PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC • Failure to wire as instructed may cause personal injury or damage to equipment. • To b...

Page 11 - NOTE: When using nitrogen gas from a cylinder, the; OUTPUT CONNECTIONS; Torch

INSTALLATION A-5 A-5 PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC NOTE: When using nitrogen gas from a cylinder, the cylinder must have a pressure regulat...

Page 13 - Operation

Section B-1 Section B-1 PRO-CUT 25 TABLE OF CONTENTS - OPERATION SECTION - Operation ............................................................................................................................... Section B Safety Precautions .............................................................

Page 14 - OPERATION

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC B-2 B-2 PRO-CUT 25 OPERATION Read and understand this entire section before operat-ing the machine. SAFETY PRECAUTIONS D...

Page 15 - USER RESPONSIBILITY

OPERATION B-3 B-3 PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC USER RESPONSIBILITY Because design, fabrication, erection and cutting vari-ables affect the...

Page 16 - CUTTING CAPABILITY

OPERATION B-4 B-4 PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC CUTTING CAPABILITY The PRO-CUT 25 is rated at 25 amps, at 35% duty cycle on a 10 minute bas...

Page 17 - LIMITATIONS

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC OPERATION B-5 B-5 PRO-CUT 25 LIMITATIONS Do not exceed output current and duty cycle rating ofmachine. Do not use the PR...

Page 18 - PILOT ARC DISCUSSION; ELECTRIC SHOCK CAN KILL.

OPERATION B-6 B-6 PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Direction of Travel 5 ° - 15 ° 10 ° - 20 ° Arc Lag Leading Angle • Use a 5° - 15° leading a...

Page 19 - PROCEDURE RECOMMENDATIONS; General - In All Cases; Torch Standoff

OPERATION B-7 B-7 PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC PROCEDURE RECOMMENDATIONS When properly used, plasma arc cutting is a very eco-nomical proc...

Page 21 - Accessories

TABLE OF CONTENTS - ACCESSORIES - Accessories ........................................................................................................................... Section C Options/Accessories........................................................................................................

Page 22 - ACCESSORIES; • Only Genuine Lincoln Electric consumables yield the

ACCESSORIES C-2 C-2 PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC ALWAYS USE GENUINE LINCOLNELECTRIC ELECTRODES ANDVORTECH™ NOZZLES • Only Genuine Lincoln ...

Page 23 - Maintenance

Section D-1 Section D-1 PRO-CUT 25 TABLE OF CONTENTS -MAINTENANCE- Maintenance ......................................................................................................................... Section D Routine Maintenance ........................................................................

Page 24 - MAINTENANCE; PERIODIC MAINTENANCE; THERMAL PROTECTION; NOTE: If the fuse blows again after power is restored,; ELECTRIC SHOCK; ROUTINE MAINTENANCE; • When using a low pressure aistream, wear

MAINTENANCE D-2 D-2 PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC PERIODIC MAINTENANCE Change consumables as required. THERMAL PROTECTION Thermal Detection...

Page 25 - FIGURE D.2 – MAJOR COMPONENT LOCATIONS

LIN CO LN EL EC TR IC PR O-CUT 25 ON OF F PU RG E POWER GAS PRESSURE THERMAL SAFETY ! RE QU IRE S 2 0A /11 5V BR AN CH CIR CU IT RE QU IRE S 3 0A /11 5V BR AN CH CIR CU IT 25 20 PC T 2 0 6 1 2 4 3 5 7 MAINTENANCE D-3 D-3 PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC...

Page 27 - Output Sect; FIGURE E.1 – PRO-CUT 25 BLOCK LOGIC DIAGRAM

Section E-1 Section E-1 PRO-CUT 25 Theory of Operation ............................................................................................................. Section E General Description ............................................................................................................

Page 28 - FIGURE E.2 – INPUT LINE VOLTAGE; GENERAL DESCRIPTION; THEORY OF OPERATION

FIGURE E.2 – INPUT LINE VOLTAGE GENERAL DESCRIPTION The PRO-CUT 25 is an inverter based constantcurrent, continuous control plasma cutting powersource. The control system has a safety mechanismto insure that the nozzle and electrode are in placebefore cutting or gouging. The PRO-CUT 25 initiatesthe ...

Page 29 - PRECHARGE AND PROTECTION; IGBT Operation; FIGURE E.3 – PRECHARGE AND PROTECTION

PRECHARGE AND PROTECTION The input voltage is rectified by the input rectifier onthe inverter board. The resultant DC voltage is appliedto the filter capacitors through the automaticreconnect of the input board. The input board alsocontains precharging circuitry for the safe charging ofthe input fil...

Page 30 - FIGURE E.4 – MAIN TRANSFORMER; MAIN TRANSFORMER

THEORY OF OPERATION E-4 E-4 PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC FIGURE E.4 – MAIN TRANSFORMER 115/230/1/50/60 VAC INPUT CN1 2 1 4 3 5678 300uH L1...

Page 31 - OUTPUT SECTION AND TORCH; G Section; FIGURE E.5 – PLASMA OUTPUT SECTION AND TORCH

OUTPUT SECTION AND TORCH The output section contains a relay which, uponreceiving a pilot signal from the control board willenable the operation of a pilot arc or a cutting arc. Theprinted circuit board mounted current sensor regulatesthe pilot and cutting current. The output choke, whichis in serie...

Page 32 - CONTROL BOARD; FIGURE E.6 – CONTROL BOARD

CONTROL BOARD The control board receives status and analogfeedback signals from the inverter board, input board,and various sensors. The control circuitry interpretsthese signals, makes decisions and changes themachines mode and output to satisfy the requirementsas defined by the circuitry. The cont...

Page 33 - PROTECTION CIRCUITS; OVERLOAD PROTECTION

PROTECTION CIRCUITS Protection circuits are designed into the PRO-CUT 25machine to sense trouble, damages, problems withinternal components, and to provide safety. These arethe main protection circuits: OVERLOAD PROTECTION The PRO-CUT 25 is electrically protected fromproducing higher than normal out...

Page 35 - Test Procedures

PRO-CUT 25 Section F-1 Section F-1 Troubleshooting & Repair Section ................................................................................. Section F How to Use Troubleshooting Guide ....................................................................................F-2 PC Board Troubl...

Page 36 - HOW TO USE TROUBLESHOOTING GUIDE; TROUBLESHOOTING & REPAIR; CAUTION; The; Step 3. PERFORM COMPONENT TESTS

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC PRO-CUT 25 HOW TO USE TROUBLESHOOTING GUIDE Service and repair should be performed by only Lincoln Electric Factory Trai...

Page 37 - PC BOARD TROUBLESHOOTING PROCEDURES

PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC ELECTRIC SHOCK can kill. Have an electrician install and servicethis equipment. Turn the machine OFFbefore wo...

Page 38 - Observe Safety Guidelines; TROUBLESHOOTING GUIDE; detailed in the beginning of this manual.; OUTPUT PROBLEMS; Input Voltage

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC PRO-CUT 25 TROUBLESHOOTING & REPAIR F-4 F-4 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginnin...

Page 39 - FUNCTION PROBLEMS; Torch Continuity

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC PRO-CUT 25 TROUBLESHOOTING & REPAIR F-5 F-5 TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginnin...

Page 41 - Clamp directly to the piece to

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC PRO-CUT 25 TROUBLESHOOTING & REPAIR F-7 F-7 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginnin...

Page 42 - LED FUNCTION PROBLEMS; One of the machine’s thermal

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC PRO-CUT 25 TROUBLESHOOTING & REPAIR F-8 F-8 Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginnin...

Page 43 - INPUT FILTER CAPACITOR DISCHARGE PROCEDURE; DESCRIPTION

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-9 F-9 PRO-CUT 25 INPUT FILTER CAPACITOR DISCHARGE PROCEDURE WARNING Service and repair sh...

Page 44 - DISCHARGE PROCEDURE; RIGHT SIDE OF MACHINE; FIGURE F.1 – LOCATION OF INPUT FILTER CAPACITOR TERMINALS

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-10 F-10 PRO-CUT 25 ELECTRIC SHOCK can kill. • Have an electrician install and service thi...

Page 45 - MAIN INVERTER BOARD RESISTANCE TEST; Analog Volt/Ohmmeter

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-11 F-11 PRO-CUT 25 WARNING MAIN INVERTER BOARD RESISTANCE TEST Service and repair should ...

Page 46 - TEST PROCEDURE; Input Filter Capacitor Discharge

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-12 F-12 PRO-CUT 25 MAIN INVERTER BOARD RESISTANCE TEST (continued) FIGURE F.2 TEST PROCED...

Page 47 - FIGURE F.3 LOCATION OF IGBT; IGBT’s; Also check each device from Gate to Emitter.; GCE

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-13 F-13 PRO-CUT 25 MAIN INVERTER BOARD RESISTANCE TEST (continued) FIGURE F.3 LOCATION OF...

Page 51 - INPUT BOARD VOLTAGE TEST; mm Nut Driver

TROUBLESHOOTING & REPAIR F-17 F-17 PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC INPUT BOARD VOLTAGE TEST Service and repair should be performed by onl...

Page 52 - Capacitor Discharge; A B; AC; TEST POINTS; Figure F.6 Input Board Description

TEST PROCEDURE 1. Remove input power to the PRO-CUT 25 machine. 2. Remove carrying handle using a 4mm allen wrench. 3. Using a crescent wrench, carefullyremove the plastic nut from around thepressure regulator located on the top ofthe machine. 4. Using a 7mm nut driver, remove the case wraparound. 5...

Page 53 - After the relays activate check for; Figure F.7 Input Board Test Points

TROUBLESHOOTING & REPAIR F-19 F-19 PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC 10. After the relays activate check for 115VAC from both test points A...

Page 55 - MAIN INVERTER BOARD VOLTAGE TEST

F-21 F-21 PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR MAIN INVERTER BOARD VOLTAGE TEST Service and repair should be performe...

Page 56 - Remove carrying handle using a 4mm; detailed earlier in this; MAIN INVERTER BOARD VOLTAGE TEST (CONTINUED)

TEST PROCEDURE 1. Remove input power to the PRO-CUT 25 machine. 2. Remove carrying handle using a 4mm allen wrench. 3. Using a crescent wrench, carefullyremove the plastic nut from around thepressure regulator located on the top ofthe machine. 4. Using a 7mm nut driver, remove the case wraparound. 5...

Page 57 - Figure F.9 Test Points

10. Carefully test for 12VDC at test points C7. See Figure F.9. See the Wiring Diagram. This is the rectified and regulated supply for the pulse widthmodulation circuit. 11. Carefully test for 12VDC at C18 test points. If it is not correct the control board or associated wiring may be faulty. See th...

Page 59 - TORCH CONTINUITY AND SOLENOID TEST; 2 VDC @ 1 Amp Power Supply

TORCH CONTINUITY AND SOLENOID TEST Service and repair should be performed by only Lincoln Electric factory trained personnel.Unauthorized repairs performed on this equipment may result in danger to the technician ormachine operator and will invalidate your factory warranty. For your safety and to av...

Page 60 - Electrode Lead

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-26 F-26 PRO-CUT 25 TORCH CONTINUITY AND SOLENOID TEST (continued) TEST PROCEDURE 1. Remov...

Page 63 - mm Allen Wrench

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-29 F-29 PRO-CUT 25 WARNING AIR/GAS SOLENOID TEST Service and repair should be performed b...

Page 64 - AIR/GAS SOLENOID TEST; Input Capacitor Discharge; FIGURE F.12 – AIR SOLENOID; LEFT SIDE OF MACHINE; Air Solenoid

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-30 F-30 PRO-CUT 25 AIR/GAS SOLENOID TEST (continued) TEST PROCEDURE 1. Remove input power...

Page 66 - PROCEDURE; Remove carrying handle using a 4mm allen; CONTROL BOARD REMOVAL AND REPLACEMENT

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC PRO-CUT 25 TROUBLESHOOTING & REPAIR F-32 F-32 PROCEDURE 1. Remove input power to the PRO-CUT 25 machine. 2. Remove c...

Page 67 - Screws

PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC 7. A nut is located under the red plastic piece that you previously removed. Loosen this nut with a 6mmnut dr...

Page 68 - Do Not; Replace the carry handle.

PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC 16. Replace the red PURGE button. 17. Replace the plastic OUTPUT knob, align it in its original position, and...

Page 69 - mm Allen Wrench

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC PRO-CUT 25 TROUBLESHOOTING & REPAIR F-35 F-35 WARNING INPUT BOARD REMOVAL AND REPLACEMENT Service and repair should ...

Page 70 - Capacitor Discharge Procedure.; INPUT BOARD REMOVAL & REPLACEMENT; FIGURE F.16 Input Board Location; Input Board

PROCEDURE 1. Remove input power to PRO-CUT 25. 2. Remove carrying handle using a 4mm allen wrench. 3. Using a crescent wrench, carefully remove the plastic nut from around the pressure regulator located on the top of the machine. 4. Using a 7mm nut driver, remove the case wraparound. 5. Perform Capa...

Page 71 - FIGURE F.17 – INPUT BOARD REMOVAL; Do Not Over tighten; Reconnect the harness plug.; Do Not Over

Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC PRO-CUT 25 TROUBLESHOOTING & REPAIR F-37 F-37 FIGURE F.17 – INPUT BOARD REMOVAL FanLeads FourLeads SwitchLeads Mount...

Page 74 - FIGURE F.18 – MAIN INVERTER BOARD REMOVAL; MAIN INVERTER BOARD REMOVAL & REPLACEMENT; Perform; Main Board

CAUTION PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-40 F-40 FIGURE F.18 – MAIN INVERTER BOARD REMOVAL MAIN INVERTER BOARD ...

Page 75 - FIGURE F.19 – INVERTER BOARD LEAD LOCATIONS; Leads; Harness plugs; Reconnect all leads to the new board.

PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-41 F-41 FIGURE F.19 – INVERTER BOARD LEAD LOCATIONS Leads NZL WRK EL Harness P...

Page 78 - Switch; SWITCH; Replace the carry handle

PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-44 F-44 FIGURE F.20 – SWITCH LIN CO LN EL EC TR IC PR O-CUT 25 ON OFF PU RG E ...

Page 80 - FIGURE F.21 – FAN LOCATION; Fan; FAN REMOVAL AND REPLACEMENT

PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-46 F-46 FIGURE F.21 – FAN LOCATION LIN CO LN EL EC TR IC PR O-CUT 25 ON OFF PU...

Page 81 - Replace the case wraparound.

PRO-CUT 25 Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Section TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC TROUBLESHOOTING & REPAIR F-47 F-47 FAN REMOVAL AND REPLACEMENT (continued) 7. Using a phillips head screw...

Page 82 - RETEST AFTER REPAIR; Machine Input and Output; Input Current; Pilot Current; Functional Test; Turn on the machine and verify the following:

RETEST AFTER REPAIR Should a machine under test be rejected for any reason requiring the removal of any mechanical part that couldaffect the machine’s electrical characteristics, or if any electrical components are repaired or replaced, themachine must be retested. Machine Input and Output Input Vol...

Page 83 - ELECTRICAL DIAGRAMS

Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC Retur n to Master TOC G-1 G-1 PRO-CUT 25 ELECTRICAL DIAGRAMS TABLE OF CONTENTS -ELECTRICAL DIAGRAMS SECTION- ELECTRICAL DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Page 85 - WIRING DIAGRAM W/ADDITIONAL INFO; pressure; Thermo; Input Power; card

ELECTRICAL DIAGRAMS G-3 PRO-CUT 25 WIRING DIAGRAM W/ADDITIONAL INFO pressure Schematic 98056 (SIPC 25) Schematic 99016 ( SPA25) Schematic 98044 Purge Switch (n.o.) Gas Psi. Thermo Safety led Input Power 8 vdc when open for correct pressure RL1 RL3 Auto reconnect card RL1 (control bd mounted) 50hz /6...

Page 86 - SCHEMATIC- CONTROL PRINTED CIRCUIT BOARD - SHEET 1

ELECTRICAL DIAGRAMS G-4 PRO-CUT 25 SCHEMATIC- CONTROL PRINTED CIRCUIT BOARD - SHEET 1 G-4 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. Re tu rn t o Se ct io n T O C Re tu rn t o Se ct io n T O C Re tu rn t o Se ct io n T O C Re tu rn t o S...

Page 87 - SCHEMATIC- CONTROL PRINTED CIRCUIT BOARD - SHEET 2

ELECTRICAL DIAGRAMS G-5 PRO-CUT 25 SCHEMATIC- CONTROL PRINTED CIRCUIT BOARD - SHEET 2 G-5 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. Re tu rn t o Se ct io n T O C Re tu rn t o Se ct io n T O C Re tu rn t o Se ct io n T O C Re tu rn t o S...

Page 88 - SCHEMATIC- CONTROL PRINTED CIRCUIT BOARD - SHEET 3

ELECTRICAL DIAGRAMS G-6 PRO-CUT 25 SCHEMATIC- CONTROL PRINTED CIRCUIT BOARD - SHEET 3 G-6 NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. Re tu rn t o Se ct io n T O C Re tu rn t o Se ct io n T O C Re tu rn t o Se ct io n T O C Re tu rn t o S...

Page 89 - PC BOARD ASSEMBLY - MAIN INVERTER BOARD

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is pro-vided for reference only....

Page 90 - PC BOARD ASSEMBLY - INPUT BOARD

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is pro-vided for reference only....

Page 91 - PC 25 TORCH DETAILS; COMPRESSED AIR FLOW; VENT; Lift start type feature during pilot; Air Flowing & Torch Solenoid is; PILOT CURRENT PATH; CUTTING CURRENT PATH; NOZZLE; ELECTRODE; CURRENT PATH THROUGH TORCH; through plasma arc and yellow color parts

ELECTRICAL DIAGRAMS G-9 PRO-CUT 25 PC 25 TORCH DETAILS 5% 75% ELECTRODE SOL. ENERGIZED(surface area is great) Cup “O” rings must be good. electrode is held to the nozzle. COMPRESSED AIRINPUT 20% VERY LITTLE COMPRESSED AIR FLOWING at tip. %= AIR FLOW AIR IS FLOWING &ELECTRODE SOL. IS “ON”. HOLDS ...

Page 92 - SVM ERROR REPORTING FORM; Please give detailed description below:

SVM ERROR REPORTING FORM We need to know if there are errors in our manuals. We also value any suggestions as toadditional tests or procedures that would make this SVM a better tool for you. If you discover new or different “Problems or Symptoms” that are not covered in the three col-umn troubleshoo...