Troubleshooting
49
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
condition
●
Blowholes
●
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
Probable causes
Distribution box (Input
protection device)
•
Switch is not ON. (Tripping of circuit breaker)
•
Blown fuse.
•
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 Gas
regulator
•
Main cock is not open.
•
Gas nearly runs short.
•
Insufficient flow rate setting.
•
Loose connections.
Gas hose
•
Loose connections
•
Hose is damaged.
Motor (8A) fuse
(on the front panel)
•
Blown fuse
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
wrong wire size.
•
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
fittings.
Base metal cables
•
Cross section area is too small.
•
Loose connection.
•
Poorly energized base metal.
Welding conditions
•
Improper welding conditions, such as welding cur-
rent/voltage, torch angle, welding speed, wire extension
length.
•
Wrong wavelength control.
Base metal surface
and wire extension
•
Attachment of oil, dirt, rust or painting film.
Summary of Contents for YD-500GP5
Page 11: ...Rated Specifications 7 2 4 Dimensions 机型 W H L YD 500GP5HNX 383 1240 840 ...
Page 29: ...Connection 25 ...
Page 30: ...Connection 26 ...
Page 31: ...Connection 27 ...
Page 43: ...Operation 39 9 3 CRATER Operation Turn the torch switch on and off twice ...
Page 54: ...Parts list 50 12 Parts list 12 1 Parts list for GP5 Front view Rear view Top view 20 101 ...
Page 55: ...Parts list 51 Right view Left view 35 4 26 25 8 2 6 9 7 5 26 14 10 40 59 60 61 30 106 ...
Page 56: ...Parts list 52 30 102 103 104 105 24 ...
Page 60: ...Circuit diagram 56 13Circuit diagram 13 1 Circuit diagram for YD 500GP5 ...
