Manual Kemppi FastMig X 350MV (page 23 of 30) (English)

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5. TROUBLESHOOTING

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 environmental use when using

the MIG/MAG process with FastMig X 350MV.

Problem Check the following

Machine won’t work

• Check mains plug is connected correctly

• Check mains power distribution is switched on

• Check the mains fuse and or circuit breaker

• Check power source 0/I switch is ON

• Check interconnection cable set and connectors between the power source and

wire feed unit are correctly fastened. See the manual schematic

• Check earth return lead is connected

• Check control panels are switched on.

Dirty, poor quality weld

• Check shielding gas supply

• Check and set gas ow rate

• Check gas type for application

• Check gun/electrode polarity

• Check correct welding program selected

• Check correct channel number selected on wire feeder control panel

• Check power supply – Phase down?

Variable welding performance

• Check wire feed mechanism is correctly adjusted

• Check correct drive rolls are tted

• Check wire spool 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 in application

• Check cable connections and earth return clamp

• Check welding parameter settings.

Filler wire won’t feed

• Check that pressure arms are closed and adjusted in wire feed mechanism

• Check welding gun switch function

• Check Euro gun collar is correctly fastened

• Check gun liner is not blocked

• Check contact tip, size, type, wear

• Check and try alternative gun

High spatter volume

• Check welding parameter values

• Check inductance/Dynamics values

• Check cable compensation value if long cables are tted

• Check gas type and ow

• Check welding polarity – cable connections

• Check ller material selection

• Check correct welding program selected

• Check correct channel number selection

• Check ller wire delivery system

• Check power supply – 3-phase present?

Err1

Power source is not calibrated or calibration data cannot be read

• Restart power source

• if the problem continues after multiple startups contact Kemppi service

representative

Err 3

Overvoltage in the mains supply

• Check the mains voltage

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Kemppi FastMig X 350MV Manual

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