12/30
ALFA IN a.s. ©
www.alfain.eu
ADJUSTING THE MACHINE FOR ANOTHER WIRE DIAMETER
In all machines ALFA IN MIG / MAG are used rolls with two grooves. These
grooves are intended for two different wire diameters (e.g. 0,8 a 1,0 mm). Groove
can be replaced by removing the rolls and rotating them, or use a different roll
grooves with required dimensions.
1. Open the nut
E1
to the forward, pressure rolls
E2
will be opened upward.
2. Unscrew the locking element
and remove the roll.
3. If there is a suitable groove on the roll, rotate the roll and place it back on
the shaft and secure it by screwing the element.
ADJUSTING THE MACHINE FOR WELDING OF ALUMINIUM
For feeding the AL wire it is necessary to use roll with the “U” profile - see
paragraph OVERVIEW OF ROLLS FOR WIRE FEED. To prevent problems with
feeding use wires with diameter 1,0 mm of AIMg3 or AlMg. Wire of alloy Al99, 5
or AlSi5 are too soft and easily will cause problems with movement.
For the aluminum welding it is also necessary to provide the torch tefl. liner and
special current nipple. We do not recommend you to use the torch longer than 3
m. Great attention must be paid to adjust the contact power of rolls – it must not
be too high, otherwise there is a deformation of the wire.
As a protective atmosphere is necessary to use argon.
Fig. 4 – Customization of the feed for the aluminium wire
Pos.
Description
G1
EURO connector
G2
Rolls
G3
Liner terminal for 4,0mm, 4,7mm outer diameter
G4
O-ring 3,5 x1, 5mm to prevent escape of gas
G5
Nut
G6
Liner tefl.
G7
Sustain pipe for teflon and plastic liner
INSERTING THE WIRE
1. Open the side cover of the wire feeder space.
2. Put the wire spool on the wire spool holder
D1
and fix it with the fixing nut
D2
. If a spool (size of 15 or 18 kg) is used, put on each side of the spool
adapter
D3
. The hole in the back of the adapter must fit into the pin on the
wire spool holder!
