Rectifying faults
Checklist for rectifying faults
099-000151-EW501
18.01.2013
55
7
Rectifying faults
All products are subject to rigorous production checks and final checks. If, despite this, something fails to
work at any time, please check the product using the following flowchart. If none of the fault rectification
procedures described leads to the correct functioning of the product, please inform your authorised
dealer.
7.1
Checklist for rectifying faults
NOTE
The correct machine equipment for the material and process gas in use is a
fundamental requirement for perfect operation!
Legend Symbol Description
a
Fault/Cause
#
Remedy
Functional errors
a
Machine control without displaying the signal lights after switching on
#
Phase
failure
>
check
mains connection (fuses)
a
No welding performance
#
Phase
failure
>
check
mains connection (fuses)
a
Various parameters cannot be set
#
Entry level is blocked, disable access lock (see chapter entitled "Lock welding parameters
against unauthorised access")
a
Connection problems
#
Make control lead connections and check that they are fitted correctly.
No arc ignition
a
Incorrect ignition type setting.
#
Set ignition type changeover switch to the HF ignition setting.
Bad arc ignition
a
Material inclusions in the tungsten electrode due to contact with filler material or workpiece
#
Regrind or replace the tungsten electrode
a
Bad current transfer on ignition
#
Check the setting on the "Tungsten electrode diameter/Ignition optimisation" rotary dial and
increase if necessary (higher ignition energy).
Welding torch overheated
a
Loose welding current connections
#
Tighten power connections on the torch and/or on the workpiece
#
Tighten contact tip correctly
a
Overload
#
Check and correct welding current setting
#
Use a more powerful welding torch
