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DATE: January 8, 2003 BULLETIN NO: M_03_002
TITLE/ PRODUCT NAME: Capacitor Discharge for ESAB 353cv and
453cv power Sources
RATING:
_____ DIRECTIVE _____ ALERT
(Action is Required) (Potential Problem)
_____ INFORMATION _
X_ PRODUCT IMPROVEMENT
(Action is Optional) (Enhanced Product)
_
X_ General Distribution _____ Business Confidential
(Unrestricted) (Restricted Distribution)
PRODUCT SERIES/ MODEL/SERIAL NO.: ESAB 353cv MxxJ248001 and higher
ESAB 453cv MxxJ302001 and higher
SUMMARY: Some operators using the above power sources have complained about “sparking” or
“arcing” of the electrode wire that can occur if the wire comes in contact with a grounded work piece
shortly after welding has stopped. The capacitor discharge feature eliminates “sparking” or “arcing” of
the electrode wire.
This factory installed change consists of a small PCB, mounting brackets, resistor pack and associated
wiring mounted to the “A” frame support near the output rectifier bridge.
The PCB and resistor pack rapidly (<1/2 sec) discharges capacitor voltage to eliminate the electrode
“sparking” or “arcing” potential.
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OPERATIONAL IMPACT: This modification has no affect on the welding performance of the power
source and is offered as a no charge feature to eliminate the “sparking” or “arcing” of the electrode wire.
ACTION: Non required.
CONTACT:
ESAB Welding & Cutting Products
Product & Service Information Group
843-664-4416
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