ESAB ESABMig 325, Service Manual

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Edition 030411
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d1s325
READ THIS FIRST
Maintenance and repair work should be performed by an experienced person, and
electrical work only by a trained electrician. Use only recommended replacement parts.
This service manual is intended for use by technicians with electrical/electronic training for
help in connection with fault–tracing and repair.
Use the wiring diagram as a form of index for the description of operation. The circuit
board is divided into numbered blocks, which are described individually in more detail in
the description of operation. All component names in the wiring diagram are listed in the
component description.
This manual contains details of all design changes that have been made up to and
including August 2002.
The ESABMig 325 is designed and tested in accordance with international and
European standard IEC/EN 60974–1 and EN 50199.
On completion of service or repair work, it is the responsibility of the person(s) etc.
performing the work to ensure that the product does not depart from the requirements
of the above standard.
INTRODUCTION
The ESABMig 325 is step switched power source designed for MIG/MAG–welding
together with wire feed units ESABFeed 30 and the most of ESAB wire feeders.
The power unit is fan–cooled and equipped with thermal overload protection.
The machine can be fitted with an instrument that displays current and voltage.
It incorporates a hold function and can be calibrated.