15
TROUBLESHOOTING GUIDE
1. MACHINE DOES NOT WORK
Mains switch is ON, but relevant
operating status LED and digital
displays are not lit up
REMEDYCAUSEFAULT
Mains power socket or plug is faulty Replace any faulty parts
2. NO REACTION WHEN TORCH
TRIGGER IS ACTUATED
Mains switch is ON, relevant
operating status LED and digital
displays are lit up, but LED displays
, , do not light up
when trigger is pulled back
The "Power ON" reset time after switch-on
(10 sec) has not yet elapsed
After switching on the mains switch, wait
for about 10 sec before starting to weld
3. NO WELDING CURRENT
Mains switch is ON, relevant opera-
ting status LED and digital displays
are lit up,
LED displays , , light up when
the trigger is pulled back.
HF and shielding gas are present
4. NO WELDING CURRENT
Mains switch is ON, relevant opera-
ting status LED is lit up, digital displays
and are signaling t - S
e.g.: 8 1 °C (Overtemp. Sec.)
Max. duty cycle has been exceeded or fan
is faulty (Display is signaling secondary
overtem-perature) t - S
Allow the machine to cool ð do not switch
off, check working of fan
Short circuit in welding-current circuit in
electrode welding mode (longer than 1 sec)
Eliminate the short circuit in the welding-
current circuit
Open up the machine and blast clean with
dry compressed air
Primary module is very dirty
5. ARC SOMETIMES BREAKS
(in manual electrode)
Arc-drop voltage of electrode is too high Use an alternative electrode if possible
6. NO SHIELDING GAS
all other functions are OK
Connect the gas hose, replace faulty hose
Call after-sales serviceGas solenoid valve is defective
Using internal program parameters,
increase the gas post-flow time (depends
on welding amperage)
7. NO GAS POST-FLOW
Tungsten electrode discolours after
end of welding
Gas post-flow time is set too short
8. POOR ARC IGNITION
Tungsten electrode is alloyed up, or poin-
ted tip is damaged
Sharpen tip of tungsten electrode
Tungsten electrode is underloaded
Use a suitable electrode for the ampera-
ge (also start-arc amperage) in question
Torch is damaged: torch body, protective
hose etc. are faulty
Replace the damaged parts or change
the torch
See Pt.6 above
9. HF IS TOO WEAK
10. REMOTE CONTROL UNIT DOES
NOT WORK
(all other functions are OK)
Change the remote control socket
10-pole remote control socket is faulty
No shielding gas, or not enough
Warning! Where fuses need to be changed, they must be replaced by fuses of the same rating. No warranty claims will be
accepted in respect of damage caused by the use of too high a raiting of fuse!
Break in mains lead,
Mains plug is not plugged in
Mains fuse is faulty
Check mains lead, and mains voltage if
necessary
Change the fuse
Torch control plug is not plugged in, or the
plug-in connection is faulty
Torch switch (micro-switch) or torch con-
trol line is faulty
Plug in the control plug and secure it,
check connection, replace if necessary
Repair or replace torch
Earth cable is not connected
Earth cable is plugged into wrong current
socket
Torch is faulty
Clamp the earth cable to the workpiece
Plug the earth cable into the socket
and secure it
Change the torch
Cooling air-stream is insufficient Ensure adequate supply of cooling air
Gas cylinder is empty
Pressure regulator is defective
Gas hose is not connected, or is faulty
Welding torch is faulty
Change the gas cylinder
Change the regulator
Replace the torch
Gas pre-flow time is set too short
HF is too weak
Gas nozzle is dirty; HF jumps over the gas
nozzle onto the workpiece
Gas nozzle is too small for the diameter of
tungsten electrode used
Increase gas pre-flow time
See Pt.9 below
Use a new ceramic nozzle
Use a bigger gas nozzle
Remote control cable is not properly con-
nected
Remote control unit or cable is faulty
Plug in the remote control cable the right
way round
Change the remote control unit or cable
Warning! Machine may only be opened up by suitably qualified and skilled personnel!
To Next Page
Loading...
Need help?
General
