ESAB MT-450W, Инструкция по эксплуатации

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4.0 - TECHNICAL DATA
4.1 TORCH AMPERAGE RATINGS
NOTE: Ratings are based on tests that comply with NEMA ARC Welding Section Standard 11-6-1975 for Duty Cycle. “The
time period of one complete cycle shall be 10 minutes” (60% = 6 minutes). National Electrical Manufacturers
Association, 2101 L Street N.W. Washington D.C. 20037.
5.0 - TROUBLESHOOTING
100% DUTY CYCLE 60% DUTY CYCLE
CO
2
MIXED CO
2
MIXED
450 AMP 450 375 550 475
650 AMP 650 550 750 650
Model MT-450W MT-650W
Length ........................................ 15.2” (386 mm) ................... 13.0” (330 mm)
Height ........................................... 4.2” (107 mm) ..................... 4.2” (107 mm)
Handle Dilameter ............................ 1.6” (41 mm) ....................... 1.6” (41 mm)
Weight .....................................28.8 oz. (816 gm) ................32.8 oz. (930 gm)
(less service lines)
Water Cooling Requirement: 0.5 Gal./Min. (2 L./Min.)
4.2 SPECIFICATIONS
PROBLEM POSSIBLE CAUSE
Poor Wire Feed • conduit liner clogged or kinked
• incorrect liner size or contact tip
• liner cut too short and not seating properly in tip adaptor
• drive rolls too tight resulting in scoring of welding wire
• welding wire dirty, rusty or too much cast
Short Tip Life • drive rolls too tight resulting in scoring of welding wire
• welding wire dirty, rusty or too much cast
• uncoated wire being used, increasing usage
• wrong tip size
• torch being run beyond its amperage range
Torch Overheating • loose retaining screw on quick connect block
• insufficient gauge power cable and/or ground cable
• loose connector cones and/or cone nuts
• torch being run beyond its amperage range
• electrical malfunction in power source
• poor or no water flow
Weld Porosity • spatter built up in nozzle blocking gas
• leaks in gas hose or improper connection
• o-rings on power pin are cut or damaged
• inner tube loose from connector cone
• poor wire feed (see above)
• improper shielding gas or welding wire
• rusty or poor quality welding wire
• parent metal rusty or contaminated or high in sulphur content
• gas flow improperly set
Torch Leaking • Power cable burnt
• Leak in gooseneck