Troubleshooting Table - Panasonic YD-350GL4 Operating Instructions Manual

１１．２

Troubleshooting table

* In the case of welding errors without any error (Err) indication, refer to the following table to search for their causes..
Blowholes
Error
●
condition
Welded tip
●
Wire runs into the base metal
●
Bead turns black.
●
Lack of arc occurs.
●
Unstable arc start
●
No wire feeding
●
No gas supply
●
Gas flows without stop
●
Check item
Distribution box
• Switch is not ON. (Tripping of circuit breaker)
(Input protection
• Blown fuse.
device)
• Tripping of circuit breaker.
• No phase.
Input cable
• Cable is disconnected or severed.
• Loose connections.
This product
• Switch is not ON.
• Tripping of circuit breaker.
Gas cylinder
• Main cock is not open.
Gas regulator
• Gas nearly runs short.
• Insufficient flow rate setting.
• Loose connections.
Gas hose
• Loose connections
• Hose is damaged.
Motor (8A) fuse
• Blown fuse
(on the front panel)
Wire feeder
• Size of the wire for feed roller/SUS tube is wrong.
• Crack, clogging or breakage at the feed roller.
• Insufficient fastening of pressure rod.
• Accumulation of wire powder at SUS tube inlet.
• Fuse for voltage detection wire is blown.
Torch cable
• Cables (for power and torch switch) are severed.
• Loose connection to the wire feeder.
• Signs of dropping impact
• Torch cable is bent at an acute angle or coiled.
Welding torch
• Tip/liner is worn, clogged, distorted or has wire with
• Torch cable is bent at an acute angle or coiled.
• Tip/nozzle/insulation tube: Loose connection
• Loose connection of the torch body to the connec-
Base metal cables
• Cross section area is too small.
• Loose connection.
• Poorly energized base metal.
Welding conditions
• Improper welding conditions, such as welding cur-
• Wrong wavelength control.
Base metal surface
• Attachment of oil, dirt, rust or painting film.
and wire extension
Troubleshooting
Probable causes
wrong wire size.
tor fittings.
rent/voltage, torch angle, welding speed, wire
extension length.
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