ESAB Firepower MST-200 User Manual

8 TROUBLESHOOTING
0463 766 001 - 73 - © ESAB AB 2021
Type of fault
Cause
Corrective action
Cold weld puddle
Loose welding cable
connection.
Check all welding cable
connections.
Low primary voltage.
Contact supply authority.
Fault in power source.
Have an accredited ESAB
service provider test then
replace the faulty
component.
The arc does not have a
crisp sound that short arc
exhibits when the wirefeed
speed and voltage are
adjusted correctly
The MIG gun has been
connected to the wrong
voltage polarity on the front
panel.
Connect the MIG polarity
cable to the positive (+)
welding terminal for solid
wires and gas shielded flux
cored wires. Refer to the
electrode wire manufacturer
for the correct polarity.
Poor weld result from setup
chart parameters
Contact tip has arc marks in
the bore causing excessive
drag on the wire.
Replace the contact tip with
only a genuine ESAB
velocity contact tip.

ESAB Firepower MST-200 Specifications

General

Brand	ESAB
Model	Firepower MST-200
Category	Welding System
Language	English