Troubleshooting - Kemppi HiArc M 400R Operating Manual

4.

trOuBlesHOOting

Problem
The machine stops working.
Overheating indicator is lit, and
Err 4 is displayed.
Machine stops working.
Err 2 or Err 3 is displayed.
Machine stops working.
Err 43 is displayed.
Poor welding result
Main switch indicator does not
switch on
* Contact Kemppi service in case of Err 2 and Err 3 without mains voltage cause.
© Kemppi Oy / 1308
Cause
The machine has overheated.
• Ensure that cooling air has unrestricted flow.
• The machine's duty cycle has been exceeded.
If no other damage is caused, the fan starts working and the machine recovers within a
couple of minutes.
If the problem persists, please contact Kemppi service representative.
The mains voltage is either too low (Err 2) or too high (Err 3). *
The machine recovers automatically, when the mains voltage is in the recommended
range (342 – 484 V).
The wire feeder motor is overloaded.
Check that you are using the right wire type and that the wire feed route is unobstructed.
Several factors affect the welding quality.
• Check wire feed calibration.
• Check that the earth return clamp is properly attached, the point of contact is clean and
that the cable and its connectors are intact.
• Check the voltage and wire speed settings on the control panel are correct for the given
wire size and type.
• Check that the shielding gas flow rate at the gun nozzle is correct.
• Check that the shielding gas is suitable for the filler wire used.
• Check that the wire feed is constant, and adjust if necessary.
• Check that the mains voltage is not too irregular.
The machine has no mains voltage
• Check the mains fuses
• Check the mains cable and the wall plug
EN
15