Troubleshooting Table; Welding Defects - CEA COMPACT 240M Bedienungsanleitung & Ersatzteilliste

Troubleshooting table

Problem
The line fuses burn out and
close the line circuit breaker
The line fuses burn out when
the torch button is pressed
The line fuses burn out after
working for some time
The welder does not
emit current
Welding current unsteady

Welding defects

Problem
Porosity (external or internal)
Withdrawal cracks
Lateral incisions
Excessive splashing
Cause
• Wrong connection
• Short circuit on fan motor
• Short circuit on rectifier
• Short circuit on main transformer winding
• Fuses not high enough capacity
• Wrong connection
• Line fuses burnt out
• Circuit open on welding cables
• Variations of voltage on the line
• Section of connecting cables too small
• Loose connections
Cause
• Defective wire
• Insufficient gas flow
• Defective flow meter
• Defective solenoid
• Wire guide nozzle clogged
• Gas flow holes clogged
• Drafts of air
• Wire or piece dirty or rusty
• Bead too small
• Bead too concave
• Bead too penetrating
• Pass speed too high
• Current too low and voltage too high
• Voltage too high
• Wire guide nozzle clogged
• Torch tilted too much
13
Remedy
• Check and follow the
instructions for connection
• Repair or replace the motor
• Replace rectifier
• Replace transformer
• Use fuses of adequate capacity
for the line absorption
• Check and follow the
instructions for connection
• Find the cause and replace
• Check the welding cables for breakage
• Check the line voltage with a voltmeter
• Replace with cables of adequate section
• Check connections to the power mains
and welding circuit and tighten if necessary
Remedy
• Change wire
• Adjust flow
• Check flow meter
• Check
• Clean nozzle
• Clean with jets of air
• Screen the workplace
• Replace wire or clean piece
• Increase current
• Reduce voltage
• Reduce voltage and current
• Slow down
• Increase wire speed and reduce voltage
• Adjust voltage
• Clean nozzle
• Tilt correctly