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PREPARING THE ELECTRODE
Special care is to be paid while preparing the electrode tip. Grind the tip so that it shows vertical lines (markings) as shown in Figure
below.
WARNING: flying hot metal particles can cause serious injury to personnel, cause fire and damage equipment.
WARNING: tungsten contamination may adversely affect the weld quality. Contact of the tungsten electrode with the welding bath
is to be avoided.
Shape tungsten electrode only with a grinder equipped with adequate protective guards in a safe location and wearing adequate
protections for face, hands and body. Shape tungsten electrodes with a fine grit, hard abrasive wheel used only for tungsten shaping.
Grind the tip of the tungsten electrode to a taper for a length of 1,5 – 2 times the electrode diameter.
Model
Max
Power
MMA 1255
3KVA
The arc welder is manufactured in conformity with these international standards: IEC 60974 -1 / IEC 60974 – 10.
MMA: Suitable for welding with coated electrodes:
TIG: Suitable for TIG welding
U0: Secondary no-load voltage.
I2 : Welding current.
U2 : Secondary voltage with load.
U1 : Rated supply voltage.
I1 : Power consumption with load.
IP 21C: Degree of protection of casing.
No-Load
Welding
Voltage
Current
80V
10-90
EXPLANATION OF TECHNICAL SYMBOLS
Single-phase, static frequency converter-transformer-rectifier.
Droping characteristic.
Duty Cicle
Electrodes
Diam.mm
90A – 40%
1,5-2,5
75A – 60%
Weight
Dimensions
Kg.
mm
3
265X105X178
Number of
Fans
1
9
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