Rectifying faults
Checklist for rectifying faults
099-000235-EW501
17.12.2020
33
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 dea-
ler.
7.1 Checklist for rectifying faults
The correct machine equipment for the material and process gas in use is a fundamental
requirement for perfect operation!
Legend
Symbol
Description
Fault/Cause
Remedy
Mains fuse triggers
Mains fuse triggers - unsuitable mains fuse
Set up recommended mains fuse
> see 8 chapter
.
Functional errors
Insufficient coolant flow
Check coolant level and refill if necessary
Eliminate kinks in conduit system (hose packages)
Reset automatic cutout of the coolant pump by activating
Air in the coolant circuit
Vent coolant circuit
Several parameters cannot be set (machines with access block)
Entry level is blocked, disable access lock
All machine control signal lights are illuminated after switching on
No machine control signal light is illuminated after switching on
No welding power
Phase failure > check mains connection (fuses)
Connection problems
Make control lead connections and check that they are fitted correctly.
Welding torch overheated
Loose welding current connections
Tighten power connections on the torch and/or on the workpiece
Tighten contact tip correctly
Overload
Check and correct welding current setting
Use a more powerful welding torch
No arc ignition
Incorrect ignition type setting.
Ignition type: Select “HF start”. Depending on the machine, the setting is defined by the change-
over switch for ignition types or the
parameter in one of the machine menus (see the “Con-
trol operating instructions”, if applicable).
Bad arc ignition
Material inclusions in the tungsten electrode due to contact with filler material or workpiece
Regrind or replace the tungsten electrode
Bad current transfer on ignition
Check the setting on the "Tungsten electrode diameter/Ignition optimisation" rotary dial and in-
crease if necessary (higher ignition energy).
