9
Fig. 2: Front view of POWERmax
2
1) Main ON/OFF switch (at the back)
2) Control diode for operation
3) Control diode for thermal overload
4) Selector switch for MMA / TIG
5) Read-out potentiometer for welding current (5 - 140 A)
6) Plus output terminal
7) Minus output terminal
Standard values for setting parameters for thoriated (2%) and ceriated (2%) tungsten electrodes
Tungsten electrode
= (-)
Argon flow
Gas nozzle size
Ø/mm
Ampere
l/min
(G 140 RA)
1,0
< 80
3 - 4
4
1,6
70 - 140
4 - 5
6
2,4
130 - 230
4 - 6
8
Commissioning
o
Follow safety instructions.
o
Connect mains plug.
o
Connect TIG welding torch cable to adapter cable,
attach the cable to the minus terminal
of the
equipment and lock by turning to the right.
o
Insert earth cable in plus terminal
and lock by
turning to the right.
o
Attach gas tube to argon welding regulator.
The required rate of flow is 3 - 10 l/min.
o
Turn on main switch.
o
Tilt selector switch
to TIG operation
.
o
Adjust welding current (the standard value may be
found in the table) on the welding current poten-
tiometer .
o
Open gas valve on torch.
o
Place torch with gas nozzle on the workpiece so that
a distance of 2 - 3 mm is maintained between the
electrode end and the workpiece.
o
Tilt the torch with the gas nozzle slowly until the
tungsten needle touches the workpiece.
o
Ignite the arc by carefully lifting the torch.
o
Start welding.
o
Stop welding by increasing the distance between
the torch and the workpiece, thereby breaking the
arc.
Technical data
Welding current range:
5 A - 140 A
Welding current
at 35 % duty cycle
1
): 140 A
at 60 % duty cycle
1
): 120 A
at 100 % duty cycle
1
): 100 A
No-load voltage (electrode):
93 V
Mains voltage:
230 V
single phase
50/60 Hz
Max. input power
at 100 % duty cycle
1
): 3,8 kVA
Power factor cos.
ϕ
:
0,99
Efficiency at 100 % duty cycle
1
): 88 %
Mains fuse rating:
16 A slow blow
Supply line cross section:
3 x 2.5 mm²
Enclosure protection class:
IP 23
Cooling system:
AF
Insulation class:
B
Dimensions L x W x H (mm):
312 x 109 x 196
Weight (excluding mains cable):
4.2 kg
1
) 10 min. cycle, 40° C ambient temperature to comply with
EN 60974-1 european standard
