Manuale d’uso / di manutenzione del prodotto LF-72/74 del fabbricante Lincoln Electric
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LF- 72/74 SVM171-A January , 2007 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 pr oper installation ... and thoughtful operation on your part.
Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 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.
Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 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.
Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC FOR ELECTRICALL Y powered equipment. 8.a. T urn of f input power using the disconnect switch at the fuse box before working on the equipment.
Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC PRÉCAUTIONS DE SÛRETÉ Pour votre propre protection lire et observer toutes les instruc.
LF-72/74 MASTER T ABLE OF CONTENTS FOR ALL SECTIONS Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i-iv Installation LF-72 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 SINGLE/DUAL Section A-1 Section A-1 T ABLE OF CONTENTS - INST ALLA TION SECTION - Installation ....................................
LF-72/74 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC A-2 INST ALLA TION A-2 TECHNICAL SPECIFICA TIONS : LF-72 Wire Feeder SPEC.
A-3 A-3 LF-72/74 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n.
INST ALLA TION LF-72/74 A-4 A-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC BENCH MOUNT The LF-72 mounts in a variety of configurations.
LF-72/74 INST ALLA TION A -5 A-5 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC SAFETY PRECAUTION ELECTRIC SHOCK can kill.
LF-72/74 INST ALLA TION A-6 A-6 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e .
LF-72/74 INST ALLA TION A-7 A-7 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e .
LF-72/74 NOTES A-8 A-8 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re.
LF-72/74 INST ALLA TION A-9 A-9 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e .
LF-72/74 INST ALLA TION A-10 A-10 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st .
LF-72/74 INST ALLA TION A-11 A-11 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC WIRE DRIVE CONFIGURA TION (See Figure A.
LF-72/74 INST ALLA TION A-12 A-12 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC PRESSURE ARM ADJUSTMENT ELECTRIC SHOCK can kill.
LF-72/74 INST ALLA TION A-13 A-13 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 3.
LF-72/74 INST ALLA TION A-14 A-14 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st .
LF-72/74 INST ALLA TION A-15 A-15 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC SHIELDING GAS CONNECTION C YLINDER may explode if damaged.
LF-72/74 INST ALLA TION A-16 A-16 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC INST ALLING ELECTRODE CONDUIT KITS ELECTRIC SHOCK can kill.
LF-72/74 INST ALLA TION A-17 A-17 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ALUMINUM WIRE PREP ARA TIONS ELECTRIC SHOCK can kill.
LF-72/74 INST ALLA TION A-18 A-18 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st .
LF-72/74 INST ALLA TION A-19 A-19 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st .
LF-72/74 NOTES A-20 A-20 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC .
Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 SINGLE/DUAL Section B-1 Section B-1 T ABLE OF CONTENTS - OPERA TION SECTION - Operation ...........................................
Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O.
LF-72/74 OPERA TION B-3 B-3 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T .
OPERA TION LF-72/74 B-4 B-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T .
Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC OPERA TION B-5 B-5 LF-72/74 SINGLE/DUAL 1.
LF-72/74 OPERA TION B-6 B-6 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T .
Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 SINGLE/DUAL Section C-1 Section C-1 T ABLE OF CONTENTS - ACCESSORIES SECTION - Accessories ........................................
LF-72/74 ACCESSORIES C-2 C-2 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T.
LF-72/74 ACCESSORIES C-3 C-3 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T.
LF-72/74 ACCESSORIES C-4 C-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T.
LF-72/74 ACCESSORIES C-5 C-5 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T.
LF-72/74 NOTES C-6 C-6 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re.
Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 SINGLE/DUAL Section D-1 Section D-1 T ABLE OF CONTENTS - MAINTENANCE SECTION - Maintenance ........................................
D-2 D-2 LF-72/74 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC MAINTENANCE MAINTENANCE Safety Precautions ELECTRIC SHOCK can kill.
MAINTENANCE D-3 D-3 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 SINGLE/DUAL 4.
LF-72/74 MAINTENANCE D-4 D-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 3 1 4 2 1.
Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 Section AA-1 Section AA-1 T ABLE OF CONTENTS - INST ALLA TION SECTION - Installation ..............................................
LF-72/74 INST ALLA TION AA-2 AA-2 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TECHNICAL SPECIFICA TIONS : LF-74 Wire Feeder SPEC.
LF-72/74 INST ALLA TION AA-3 AA-3 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st .
LF-72/74 INST ALLA TION AA-4 AA-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC BENCH MOUNT The LF-74 mounts in a variety of configurations.
LF-72/74 INST ALLA TION AA-5 AA-5 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC SAFETY PRECAUTION ELECTRIC SHOCK can kill.
LF-72/74 INST ALLA TION AA-6 AA-6 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st .
LF-72/74 INST ALLA TION AA-7 AA-7 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st .
LF-72/74 INST ALLA TION AA-8 AA-8 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st .
LF-72/74 INST ALLA TION AA-9 AA-9 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st .
LF-72/74 INST ALLA TION AA-10 AA-10 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma s.
LF-72/74 INST ALLA TION AA-11 AA-11 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma s.
LF-72/74 INST ALLA TION AA-12 AA-12 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ASSEMBL Y OF DRIVE ROLLS AND WIRE GUIDES ELECTRIC SHOCK can kill.
PRESSURE ARM ADJUSTMENT ELECTRIC SHOCK can kill. • T urn the input power OFF at the welding power s ource before installation or changing drive rolls and/or guides.
LF-72/74 INST ALLA TION AA-14 AA-14 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC SHIELDING GAS CONNECTION C YLINDER may explode if damaged.
LF-72/74 INST ALLA TION AA-15 AA-15 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 3.
LF-72/74 INST ALLA TION AA-16 AA-16 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma s.
LF-72/74 INST ALLA TION AA-17 AA-17 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC INST ALLING ELECTRODE CONDUIT KITS ELECTRIC SHOCK can kill.
LF-72/74 INST ALLA TION AA-18 AA-18 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ALUMINUM WIRE PREP ARA TIONS ELECTRIC SHOCK can kill.
LF-72/74 INST ALLA TION AA-19 AA-19 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma s.
LF-72/74 INST ALLA TION AA-20 AA-20 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 2B 2B 4A 4A 1C 1C 4B 4B 5 5 2A 2A COMMON EQUIPMENT SET -UPS FIGURE AA.
LF-72/74 INST ALLA TION AA-21 AA-21 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma s.
LF-72/74 INST ALLA TION AA-22 AA-22 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma s.
Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC POWER FEED 10M SINGLE/DUAL Section BB-1 Section BB-1 T ABLE OF CONTENTS - OPERA TION SECTION - Operation ...................................
LF-72/74 OPERA TION BB-2 BB-2 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r .
LF-72/74 OPERA TION BB-3 BB-3 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r .
LF-72/74 OPERA TION BB-4 BB-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC ITEM DESCRIPTION 1 Wire Feed Speed Knob.
LF-72/74 OPERA TION BB-5 BB-5 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 1.
LF-72/74 OPERA TION BB-6 BB-6 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 6.
Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC POWER FEED 10M SINGLE/DUAL Section CC-1 Section CC-1 T ABLE OF CONTENTS - ACCESSORIES SECTION - Accessories ................................
LF-72/74 ACCESSORIES CC-2 CC-2 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r.
LF-72/74 ACCESSORIES CC-3 CC-3 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r.
LF-72/74 ACCESSORIES CC-4 CC-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r.
LF-72/74 ACCESSORIES CC-5 CC-5 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r.
LF-72/74 NOTES CC-6 CC-6 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC .
Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC POWER FEED 10M SINGLE/DUAL Section DD-1 Section DD-1 T ABLE OF CONTENTS - MAINTENANCE SECTION - Maintenance ................................
LF-72/74 MAINTENANCE DD-2 DD-2 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC MAINTENANCE Safety Precautions ELECTRIC SHOCK can kill.
LF-72/74 MAINTENANCE DD-3 DD-3 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC FIGURE DD.
LF-72/74 MAINTENANCE DD-4 DD-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 3 1 4 2 1.
Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 SINGLE/DUAL Section E-1 Section E-1 Theory of Operation ...........................................................................
F IGURE E.2 GENERAL DESCRIPTION & INPUT RECEPT ACLE, CONTROL BOARD AND OPERA TOR CONTROLS 14 PIN INPUT CABLE R ECEPTACLE 2 4/42 VAC CONTROL BOARD WIRE FEED SPEED POT. TRIGGER INTERLOCK 2-STEP C OLD FEED GAS PURGE OPTIONAL BURNBACK TIMER OPTIONAL REMOTE VOLTAGE C ONTROL GAS SOLENOID 3.
LF-72/74 THEOR Y OF OPERA TION DRIVE MOTOR, T ACH FEEDBACK AND GAS SOLENOID The leads to the drive motor , gas solenoid and the tach (hall effect device LF-74 and LF-72 above codes 11290) are br ought into the control box via the 14 pin receptacle. This 14 pin r eceptacle also houses the gun trigger leads and the voltage sense leads.
LF-72/74 NOTES E-4 E-4 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re.
Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC LF-72/74 SINGLE/DUAL Section F-1 Section F-1 T ABLE OF CONTENTS - TROUBLESHOOTING & REP AIR SECTION - T roubleshooting & Repair Section .
HOW TO USE TROUBLESHOOTING GUIDE Service and repair should be performed by only Lincoln Electric Factory T rained Personnel. Unauthorized repairs performed on this equipment may r esult in danger to the technician and machine operator and will invalidate your factory warranty .
LF-72/74 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TROUBLESHOOTING & REP AIR F-3 F-3 Sometimes machine failures appear to be due to PC board failures.
Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O.
The arc burns back to the tip. The gas continues to flow for a long time after the weld. 1. If timer kit is installed, reduce the amount of burnback time.
LF-72/74 TROUBLESHOOTING & REP AIR F-6 F-6 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu .
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 or machine operator and will invalidate your factory warranty .
LF-72/74 F-8 F-8 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TROUBLESHOOTING & REP AIR TEST PROCEDURE 1.
LF-72/74 F-9 F-9 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n.
LF-72/74 F-10 F-10 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TROUBLESHOOTING AND REP AIR GAS SOLENOID 552B 552 553 Off = 0 VDC OCV = 59 VDC On = 7.
LF-72/74 F-11 F-11 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur.
LF-72/74 F-12 F-12 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC TROUBLESHOOTING AND REP AIR 552A 552B + - 580 42 41 DIODE BRIDGE TEST (continued) FIGURE F .
LF-72/74 F-13 F-13 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur.
LF-72/74 F-14 F-14 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC 577 576 575 0 VDC MIN.
LF-72/74 F-15 F-15 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur.
LF-72/74 F-16 F-16 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T O C Re tur n t o Ma ste r T OC REMOV AL PROCEDURE 1.
LF-72/74 F-17 F-17 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur.
LF-72/74 F-18 F-18 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur.
LF-72/74 F-19 F-19 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur.
LF-72/74 TROUBLESHOOTING AND REP AIR F-20 F-20 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu .
LF-72/74 TROUBLESHOOTING AND REP AIR F-21 F-21 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu .
LF-72/74 NOTES F-22 F-22 Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T OC Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC .
LF-72/74 Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T OC Re tur n to Ma st e r T OC Section G-1 Section G-1 T ABLE OF CONTENTS - ELECTRICAL DIAGRAMS SECTION - Electrical Diagrams......................................
ELECTRICAL DIAGRAMS G-2 LF-72/74 WIRING DIAGRAM - ENTIRE MACHINE - CODE 1 1075, 1 1076, 1 1077 (L12146) LF-72 L12146 A CAVITY NUM BERING SEQU ENCE ( COMPONENT SIDE OF P.C. BOARD) J3 2 1 J5,J8 J9,J60 4 3 6 1 GENERAL INFORMATION ELECTRICAL SYMBOLS PER E 1537 C OLOR CODE B - BLACK R- R E D U - BLUE COMMON ANALOG P.
ELECTRICAL DIAGRAMS G-3 LF-72/74 WIRING DIAGRAM - ENTIRE MACHINE - CODE 1 1209, 1 1210, 1 121 1,1 1227 (L12146-1) LF-72 L12146-1 A CAVITY NUM BERING SEQU ENCE (COMPONENT SIDE OF P.C. BOARD) J 3 2 1 J 5,J8 J9,J60 4 3 6 1 GENERAL INFORMATION ELECTRICAL SYMBOLS PER E 1537 COLOR CODE B - BLACK R- R E D U - BLUE COMMON ANALOG P.
ELECTRICAL DIAGRAMS G-4 LF-72/74 WIRING DIAGRAM - ENTIRE MACHINE - CODE 1 1290, 1 1291, 1 1292,1 1293 (L12146-2) LF-72 L12146-2 A C AVITY NUM BERING SEQUENCE (COMPONENT SIDE OF P.
ELECTRICAL DIAGRAMS G-5 LF-72/74 WIRING DIAGRAM - ENTIRE MACHINE - CODE 1 1 195, 1 1 196, 1 1 197, (L12484) LF-74 L12484 A C AVITY NUM BERING SEQUENCE (COMPONENT SIDE OF P.
Re t ur n to Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re tur n t o Se ct io n T O C Re t ur n to Ma st e r T OC Re tu r n to Ma st e r T OC Re tur n to Ma st e r T .
ELECTRICAL DIAGRAMS G-7 LF-72/74 SCHEMA TIC - ENTIRE MACHINE - CODE 1 1209, 1 1210, 1 121 1,1 1227 (G4617-1) LF-72 A D C B E 554 556 TRIG GER C ONNECTOR J4 559 515 558 COLD F EED S1 FEED PLAT E T RIGG.
ELECTRICAL DIAGRAMS G-8 LF-72/74 SCHEMA TIC - ENTIRE MACHINE - CODE 1 1290, 1 1291, 1 1292,1 1293 (G4617-2) LF-72 A D C B E 554 556 TRIG GER CONNECTOR J 13 559 515 558 C OLD FEED S1 FEED PLAT E TRIG G.
ELECTRICAL DIAGRAMS G-9 LF-72/74 SCHEMA TIC - ENTIRE MACHINE - CODE 1 1 195, 1 1 196, 1 1 197, (G4942) LF-74 A D C B E 554 556 T RIG GER C ONNECTOR J13 559 515 558 COLD F EED S1 FEED PLAT E T RIGGER I.
ELECTRICAL DIAGRAMS G-10 LF-72/74 SCHEMA TIC - COMMON ANALOG CONTROL PC BOARD - (G4559 SHEET 1) G-10 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by this manual.
ELECTRICAL DIAGRAMS G-11 LF-72/74 SCHEMA TIC - COMMON ANALOG CONTROL PC BOARD - (G4559 SHEET 2) G-11 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by this manual.
ELECTRICAL DIAGRAMS G-12 LF-72/74 SCHEMA TIC - COMMON ANALOG CONTROL PC BOARD - (G4559 SHEET 3) G-12 NOTE: This diagram is for reference only . It may not be accurate for all machines covered by this manual.
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.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Lincoln Electric LF-72/74 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Lincoln Electric LF-72/74 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Lincoln Electric LF-72/74 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Lincoln Electric LF-72/74 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Lincoln Electric LF-72/74, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Lincoln Electric LF-72/74.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Lincoln Electric LF-72/74. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Lincoln Electric LF-72/74 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
