Rectifying faults
Checklist for rectifying faults
099-011445-EW501
24.06.2021
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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
The correct machine equipment for the material and process gas in use is a fundamental require-
ment for perfect operation!
Legend
Symbol
Description
Fault/Cause
Remedy
Welding torch overheated
Insufficient coolant flow
Check coolant level and refill if necessary
Eliminate kinks in conduit system (hose packages)
Vent coolant circuit
Check coolant lines for secure connection and lock in place, if required.
Check correct connection of the welding torch cooling unit
Loose welding current connections
Tighten power connections on the torch and/or on the workpiece
Overload
Check and correct welding current setting
Use a more powerful welding torch
Functional error with the welding torch operating elements
Connection problems
Make control lead connections and check that they are fitted correctly.
Unstable arc
Material inclusions in the tungsten electrode due to contact with filler material or workpiece
Regrind or replace the tungsten electrode
Incompatible parameter settings
Check settings and correct if necessary
Metal vapour on the gas nozzle
Clean and change gas nozzle
Pore formation
Inadequate or missing gas shielding
Check shielding gas setting and replace shielding gas cylinder if necessary
Shield welding site with protective screens (draughts affect the welding result)
Unsuitable or worn welding torch equipment
Check size of gas nozzle and replace if necessary
Condensation in the gas tube
Purge hose package with gas or replace
