29
Lift-TIG
1
2
4
3
5
1
Power indicator light
2
Overtemperature control indicator
3
Welding current regulator
4
On/Off switch
5
Process selector switch MMA/Lift TIG
Always switch the machine off at the supply
switch. When changing electrode or return leads
the machine's on/off switch
4
should be in the
off postion. The machine should then also be
switched off at the mains supply plug and the plug
removed from the supply socket.
The green power light
1
will illuminate when
the machine is switched on using the on/off
switch
4
.
The machine is fitted with a process selector
switch
5
that will change the function of the
machine from MMA to Lift TIG.
The machine will stop working if the temperature
reaches a certain level. (Exceeds the units duty
cycle). The overtemperature control indicator
light
2
will illuminate.
5.1 Welding selections
Manual Metal Arc welding (MMA)
Select the current as per the
■
recommendations of the consumable
manufacturer.
Select the polarity of the electrode cable as
■
per the recommendations (+/-)
Select the process selector switch to MMA
■
DC TIG welding (Lift TIG)
Select the current as per the
■
recommendations of the consumable
manufacturer.
Connect the TIG torch to the negative (-)
■
pole of the welding machine.
Select the process selector switch to
■
'Lift TIG'
When Lift TIG is selected the tungsten
■
electrode can be touched onto the
workpiece. The arc will be initiated as the
electrode is moved upwards and the current
will revert to the adjusted current.
5.2 Earthing
For the welding process to be most effective
it is important to ensure that there is a solid
connection between the work return clamp and
the workpiece.
Always ensure that the return clamp is as close as
practically possible to the area to be welded.
Ensure that the workpiece is clean and free from
rust, scale paint or oil and grease before affixing
the work return clamp.
5.0 Operating Functions