Kemppi KEMPACT 251R - Ordering codes

EN
7.3 Troubleshooting
Welding performance can be eected by a number of issues, including the welding gun and/
or other parts of the welding system. The following information will help you to check, identify
and rectify possible causes of welding malfunction.
NOTE! The problems listed and the possible causes are not denitive, but serve to suggest some
standard and typical situations that may present during normal use when using the MIG/MAG
process.
Dirty, poor quality weld?
• Check that spatter is not blocking the nozzle or contact tip adapter
• Check shielding gas supply
• Check and set gas ow rate
• Check gas type for application
• Check gun polarity. Example: Fe solid ller wire: Earth return socket should be connected to the - pole, wire feed/gun
connection to the + pole
• Check power supply – Phase down?
Variable welding performance?
• Check wire feed mechanism is correctly adjusted
• Check correct drive rolls are tted
• Check wire spool/hub overrun tension is correctly adjusted
• Check gun liner is not blocked. Replace if necessary
• Check correct gun liner is tted for the ller wire size and type
• Check contact tip for size, type and wear
• Check gun is not over heating for the application
• Check cable connections and earth return clamp
• Check welding parameter settings.
Filler wire won’t feed?
• Check wire feed mechanism. Adjust as necessary
• Check welding gun switch function.
• Check euro gun connector is correctly tted
• Check gun liner is not blocked
• Check contact tip, size, type, wear
• Check ller wire diameter for correct size
High spatter volume?
• Check welding parameter values
• Check inductance/dynamics values
• Check gas type and ow
• Check welding polarity and cable connections
• Check ller material selection
• Check ller wire delivery system
• Check power supply. Are all electrical phases present?
• Check that operator maintains correct technique/arc length/travel speed/gun angle
NOTE! Many of these checks may be carried out by the operator. However certain checks relating to
mains power must be completed by an authorised trained electrician.
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