Read This First - ESAB Caddyt Arc 150i Service Manual

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 November 2006.
The manual is valid for:
CaddyArc 150, CaddyTig 150 and OrigoTig 150 with serial no. 316--xxx--xxxx,
328--xxx--xxxx, 341--xxx--xxxx, 405--xxx--xxxx, 613--xxx--xxxx.
Caddyt Arc 150i, Caddyt Tig 150i and Origot Tig 150i with serial no. 620--xxx--xxxx.
The CaddyArc 150, CaddyTig 150, OrigoTig 150, Caddyt Arc 150i, Caddyt Tig 150i
and Origot Tig 150i are designed and tested in accordance with international and
European standards IEC/EN 60974.
On completion of service or repair work, it is the responsibility of the person(s)
performing the work to ensure that the product still complies with the requirements of
the above standard.
INTRODUCTION
The Power sources are renamed:
New name Old name
Caddyt Arc 150i CaddyArc 150
Caddyt Tig 150i CaddyTig 150
Origot Tig 150i OrigoTig 150
The power module of the power source is a single forward converter, operating at a
switching frequency of 65 kHz. IGBT transistors are used as the switching elements. All
power semiconductors are built into modules.
Schematic diagram of the power source
ct27d1
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S0740 800 161/E061205/P66