EWM SATURN MIG 200, Operating Manual

Page: 53 / 68

11 Operating Faults, Causes and Cures
11/2
Problem Possible Cause What to do
The weld seam is
porous 1.
2.
3.
4.
5.
6.
7.
8.
Too little or too much gas
Gas cylinder is empty
Unsuitable gas quality or
inadequate purity
Excessive protrusion of welding
wire
Draft effects or wind influence
Gas nozzle blocked by splatter
Wrong wire quality or wire
surface is dirty
Very dirty surface of the
workpiece
Wire diameter x 10 is gas flow in
l/min
Replace the cylinder
Use a different gas
Reduce the gap from torch to weld
seam
Reduce the air flow by shielding the
welding area
clean or replace the gas nozzle
Use a wire of the quality prescribed
for MIG/MAG welding. Store wires
in clean conditions
Clean the base metal
9.
10
Local overheating of the
workpiece
Sucking in of “wrong“ air in the
gas line
Wherever several short passes are
welded the job must be given a
chance to cool down before welding
is continued
Check the gas line for sealing. Deal
with any leaks
Unusually strong
splatter 1.
2.
Weld blow occurring
No gas
Find a better place to connect the
workpiece lead by trial and error
Set the gas flow to correspond to the
application
Unit will not switch
on 1.
2.
No mains power
Fault in power source
Check mains fuses and replace if
necessary
Correct fault
No welding current 1.
2.
Poor contact on the workpiece
lead
Over-temperature
Check connection and positioning
Allow the unit to cool down
Lack of water 1.
2.
Too little water
Leak in water circuit
Top up coolant
Fix the leak and top up water
Malfunction of feed
or gas valve Electronic fault Change the electronics
Check connections
Unit does not weld
the values set on P2 Remote control or robot is
connected Disconnect remote control or have
display show remote control values