Troubleshooting Table - Panasonic YD-500GP5 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..
●
Error
Blowholes
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 (Input •
protection device) •
•
•
Input cable
•
•
This product
•
•
Gas cylinder Gas •
regulator •
•
•
Gas hose
•
Motor (8A) fuse
•
(on the front panel)
•
•
Wire feeder •
•
•
•
•
Torch cable
•
•
•
wrong wire size.
•
Welding torch
•
•
fittings.
•
Base metal cables •
•
•
rent/voltage, torch angle, welding speed, wire extension
Welding conditions
length.
•
Base metal surface
•
and wire extension
Troubleshooting
Probable causes
Switch is not ON. (Tripping of circuit breaker)
Blown fuse.
Tripping of circuit breaker.
No phase.
Cable is disconnected or severed.
Loose connections.
Switch is not ON.
Tripping of circuit breaker.
Main cock is not open.
Gas nearly runs short.
Insufficient flow rate setting.
Loose connections.
Loose connections
Hose is damaged.
Blown fuse
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.
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.
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- tor
Cross section area is too small.
Loose connection.
Poorly energized base metal.
Improper welding conditions, such as welding cur-
Wrong wavelength control.
Attachment of oil, dirt, rust or painting film.
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