Troubleshooting
OMCTT5639E09
48
8.2 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
Front panel display is not turned on
Neither high frequency wave nor arc is gener
-
ated.
High frequency wave is generated without arc.
Bead turns black.
Lack of arc occurs.
Insufficient arc start
No gas supply
Gas flows without stop
Check item
Probable causes
Distribution box
(Input protection device)
• Switch is not ON.
• Blown fuse.
• Tripping of circuit breaker.
• Loose connections.
O
O
O
Input cable
• Cable is disconnected or severed.
• Loose connections.
• No phase.
O
O
O
Switches
• Switch is not ON.
O
O
O
• “GAS” switch is placed to “Purge”.
O
Gas cylinder and
Gas regulator
• Main cock is not open.
• Gas nearly runs short.
• Insufficient flow rate.
O
O
O
O
O
• Excessive flow rate.
O
O
Gas hose (From gas cylin
-
der to torch.)
• Loose connections
• Hose is damaged.
O
O
Torch cable
• Torch is bent at acute angle.
• Coating is damaged.
• Sign of insulation deterioration.
O
O
O
• Torch switch is not ON.
O
Around the torch body
• Insufficient fastening of the collet.
• Sizes of collet body, collet and electrode
do not match.
• Insufficient fastening of the torch body.
O
O
• Attach an earth ring ass’y.
O
Cables on the base metal
• Insufficient cable size (sectional area.)
• Loose connections
• Poorly energized base metal.
O
O
O
Welding conditions
• Check torch angle, distance between
electrode and base metal once again.
O
O
O
O
Factory settings
• Try to set “
Hot Cur Level
” to “High”
O
• Try to set “
AR Arc Recovery
” to “ON”.
O
Summary of Contents for YC-300BP2YAF
Page 10: ...Rated Specifications OMCTT5639E09 10 2 2 1 Dimensions ...
Page 16: ...Installation OMCTT5639E09 16 Example of extension cable connection ...
Page 49: ...Parts list OMCTT5639E09 49 9 Parts list ...
Page 52: ...OMCTT5639E09 52 ...
Page 53: ...Circuit diagram OMCTT5639E09 53 10 Circuit diagram NF9 NF8 ...
Page 54: ...Circuit diagram OMCTT5639E09 54 10 1 Enlarged left half NF8 MCB ...
Page 55: ...Circuit diagram OMCTT5639E09 55 10 2 Enlarged right half NF9 ...
Page 62: ...OMCTT5639E09 62 ...
Page 63: ...OMCTT5639E09 63 ...
