ESAB A6 TFD1 Operating Manual page 7

IMPORTANT!
To prevent the wire bobbin slipping
off the brake hub:
Lock the bobbin in place using the red knob,
as shown on the label (see drawing on right)
positioned next to the brake hub.
5. Contact tip equipment
Single wire 1.6 - - 2.5 mm (4.0 mm). Light duty (D20)
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For use in restricted spaces, etc., with wire diameters up to 4.0 mm.
Use contact tube D20 with contact tip (M12 thread), see table on page 55.
Tighten the contact tip using a no. 10 spanner to ensure good electrical
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contact.
For smaller wire diameters, 1.6 -- 2.5 mm, use a guide tube and separate fine
wire straightener.
Fit the clamp for the guide tube to the M12 hole normally used for the
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fixed straightening roller on the standard wire straightener. The guide
tube should bottom against the contact tip. Trim the length so that there
is about a 5 mm gap between the wire feed roller and the end of the
tube.
Install the fine wire straightener on top of the clamp for the wire straigh-
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tener unit.
Single wire 3.0 - - 6.0 mm. Heavy duty (D35)
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Use contact tube D35 with contact jaws. See also the remarks concerning
the use of contact tube D20 for wires up to 4.0 mm in diameter in restricted
spaces.
Use the standard wire straightener unit for the A6, consisting of one fixed
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and one adjustable roller.
Install the contact jaws using the M5 bolts supplied, fitting one half of the
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contact jaws in the fixed contact tube and the other in the loose half of
the split contact tube.
Install the loose half and contact jaw in position and tighten the pressure
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screw to ensure good electrical contact between the contact jaw and the
electrode.
Tube wire
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Either the D20 or D35 contact tubes can be used for tube electrode.
If contact jaws (D35) are used only moderate pressure should be applied to
them to prevent deforming the tube wire. Make sure that good contact is ob-
tained with the wire.
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INSTALLATION