Ignition Of The Tig Arc; Power Connector; Remote Connection - Fimer T 422 Manuel D'emploi

9. IGNITION OF THE TIG ARC

After opening the gas by means of the tap on
the torch handle (A), adjust the flow rate using
the tap (B) on the cylinder (around 6 litres/min).
Fig.4
Rest the ceramic of the TIG torch on the work-
piece (step 1 of fig.5); bring the tungsten
electrode into contact with the workpiece, then
press the torch trigger, whilst moving in a cir-
cular motion where the ceramic is positioned
(see step 2 of fig.5).
At this stage, ignite the arc by moving the
electrode away from the workpiece a few
millimetres (step 3 of fig.5).
Weld maintaining the same distance from the
weld pool, whilst keeping the torch trigger
held down. Release the button to interrupt
the welding process.
12
B
A
Fig.5

10. POWER CONNECTOR

Before connecting the machine check the
tension, number of phases and the power
supply frequency. The admissible power
supply is indicated on the information
plate on the machine. Check that the earth
of the welder has been connected
correctly. Furthermore, make sure that the
plug provided with the equipment is
compatible with the local grid sockets.
Make sure that the power supply provides
sufficient power for the machine to function
(tension ranges)
The machine is provided with a specific
power cable that does not usually require an
extension lead; in the event an extension
lead is required, use one of the same
capacity or higher than the machine in use,
according to the length of the cable. A 2.5
mm² three-pole cable + earth, of the same
size or larger.

11. REMOTE CONNECTION

Figure 6 shows the connections of the
remote connector (12 of fig 1).
Where:
P
is the potentiometer for controlling the
current.
Fig.6