Thermal Arc C/W VFE 4C HS III, Operation Manual

Page: 41 / 74

6.07 How to connect the gas cylinder
If the
Power Source
Wheel Kit is fitted, position a gas cylinder on the rear tray and lock
secruely to
the Power Source cylinder bracket with the chains provided. If this
arrangement is not used then ensure that the gas cylinder is secured to a building pillar,
wall bracket or otherwise securely fixed in an upright position.
Open the gas valve once to blow out possible dirt particles.
Connect the gas regulator to the gas cylinder valve.
Connect the gas hose to the gas regulator.
Open the gas cylinder valve and adjust the gas flow on the gas regulator while
pressing the gas purge button on the wire feeder control panel, The flow rate will
be shown at the flowmeter. This should be approximately wire diameter x 10 l/min.
6.08 How to configure the machine for aluminium welding
Change the feedrolls to U groove for aluminium wire.
Change the torch liner to a nylon or teflon liner.
Remove the capillary tube (23) at the central connection.
Cut the teflon liner close to the end of the feedroll and pull the brass tube over the
teflon liner with the corresponding length to stabilise it.
Fasten the torch and thread in the wire electrode.
NOTE
The parts required for the torch depends on the type torch and wire diameter. Please
refer to the torch spare list.
Figure 1 9 .
Pos Description
2 Central connection
19 Nipple for 4.0 mm and 4.7 external diameter
20 O-ring 3,5 x 1.5 mm to prevent gas outlet
21 liner nut
22 Nylon or Teflon liner
23 Support tube for nylon or teflon liner with 4 mm OD, it substitute the outlet
guide in the central connection (16). A 4.7 mm diameter liner does not
require the support tube is required.
16 Feedroll
35