JESS WELDING E4-2800 PULS RMT, Руководство по эксплуатации

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04/2014 Operating Manual E4-2800/4200/5200 / M4-3000/4000/5500 Page 37
7.6.5 Changing the wire feed rollers
Clamping lever for contact pressure Pressure rollers
Fig. 7-2 Fig. 7-3
Knurled screws for cover plate Wire feed rollers
• Open clamping lever for contact pressure ( Pos. 15, Fig. 5-3 )
•
Loosen the knurled screws of the cover plate
•
Assemble wire feed rollers suitable for wire material and wire diameter
•
Push the pressure rollers down and close the clamping levers for contact pressure
Guideline to select the appropriate wire feed rollers:
The wire drive rollers are marked according to the wire size. If the wire drive rollers are
mounted, the wire diameter in use can be deduced from the marking of the rollers.
Wire material Wire feed roller Pressure roller
Hard materials, resistant to deformation
normal application
e.g. steel wire
V – groove or
T- groove
Smooth roller, not driven, or
V-groove or T-groove roller, driven
Hard materials, resistant to deformation
severe conditions (e.g. long welding torch hoses)
e.g. high tensile steel wire
Knurled groove Smooth roller, not driven, or
Knurled roller, driven
Soft materials, sensitive to deformation
e.g. AlMg wire
Circular groove Smooth roller, not driven
Very soft materials Circular groove Circular groove, driven
Guideline to adjust the correct contact pressure of the rollers
• Hold the wire with pliers, close to the current contact pipe of the welding torch.
Press the threading key (Pos. 16, Fig. 5-3)
➔
Wire must slip into the feed rollers.
• Hold the wire with pliers in a distance of about 10 cm behind the current contact tube
and press the threading key (Pos. 16, Fig. 5-3)
➔
Wire must not slip into the wire
feed rollers.