Electrical Connection To Mains; Connecting The Equipment Components; Problems - Causes; Possible Faults In The Mma - Selco Genesis G 200 TLH Instruction Manual

6.1 Electrical connection to mains

The system is provided with one single electrical connection
with 5 m cable at the rear of the power source.
Power source input cable and fuse sizing table:
Power source
Rated voltage
Voltage range
Delayed fuses
Power supply cable
Power source
Rated voltage
Voltage range
Delayed fuses
Power supply cable
WARNING
* The electrical system must be made by skilled technicians
with the specific professional and technical qualifications
and in compliance with the regulations in force in the
country where the equipment is installed.
* The welding power source supply cable is provided with a
yellow/green wire that must ALWAYS be earthed. This yel-
low/green wire must NEVER be used with other voltage
conductors.
* Verity the existence of the earthing in the used plant and
the good condition of the socket/s
* lnstall only plugs that are homologated according to the
safety regulations.

6.2 Connecting the equipment components

Keep to the safety regulations contalned in section
"1.0 SAFETY".
Connect the componente carefully, in order to
avoid power losses.
Connection for MMA welding
The connection in the figure results in welding with
inverse polarity. To obtain welding with direct pola-
rity, invert the connection.
G 200 TLH e AC-DC
1x230 V ± 15%
195 V - 265 V
16 A
3x2.5 mm2
G 202 TLH e AC-DC
1x115 V /1x230 V
95-140 V / 195-265 V
25 A / 16 A
3x2.5 mm2
Connection for TIG welding
- Connect the gas pipe from the cylinder to the rear gas con-
nection.
In the case of TIG welding with torch provided with liquid
cooling and WU15 unit, make the following connections:
* Connect the TIG torch liquid delivery pipe to the
ting on the WU15 front panel.
* Connect the TIG torch return pipe to the
WU15 front panel.

7.0 PROBLEMS - CAUSES

7.1 Possible faults in the MMA welding
Fault
Excessive spatter
Craters
Inclusions
Insufficient penetration
Sticking
Blow-hole and porosity
Cracks
fit-
fitting on the
Cause
1) Long arc
2) High current
1) Fast movement of the
electrode away from piece.
1) Poor cleanliness or distri-
bution of the passes
2) Defective movement of
the electrode
1) High progression speed
2) Welding current too low
3) Narrow chamfering
4) Deseaming failure on top
1) Arc too short
2) Current too low
1) Humidity in electrode
2) Long arc
1) Current too high
2) Dirty materials
3) Hydrogen in weld
(present on electrode
coating)
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