Lincoln Electric MULTI-WELD SVM151-A User Manual
Multi-weld 350 arc converter, Svm151-a, Service manual
SVM151-A
September, 2002
Safety Depends on You
Lincoln arc welding and cutting
equipment is designed and built
with safety in mind. However,
your overall safety can be in-
creased by proper installation . . .
and thoughtful operation on
your part. DO NOT INSTALL,
OPERATE OR REPAIR THIS
EQUIPMENT WITHOUT
READING THIS MANUAL AND
THE SAFETY PRECAUTIONS
CONTAINED THROUGHOUT.
And, most importantly, think
before you act and be careful.
SERVICE MANUAL
For use with machines having Code Numbers: 10645
10736
Multi-Weld 350 Arc Converter
TM
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• World's Leader in Welding and Cutting Products •
Copyright © 2000 Lincoln Global Inc.
Document Outline
- Table of Contents
- Safety
- Section A - Installation
- Section B - Operations
- Section C - Accessories
- Section D - Maintenance
- Section E - Theory of Operations
- Section F - Troubleshooting and Repair
- Symptoms
- Major physical or electrical damage is evident.
- The Multi-Weld 350 is completely dead. The meters do not light and the input contactor does not activate when the ON/OFF....
- The meters light, but the input con-tactor does not activate when the ON/OFF Mode Selector switch is...
- The Thermal Light is on. The Multi-Weld 350 does not have output. The fan operates normally.
- The Multi-Weld 350 does not have output. The meters turn on, the input contactor activates and the Thermal light is off.
- The preset amps (CC mode) or volts (CV mode) are not adjustable.
- The preset range is not correct.
- The meters do not light in either CV or CC modes.
- One or both of the meter’s readings are not accurate.
- The fan motor does not run when the machine is turned on.
- The fan does not run when welding.
- The welding output is high with no control.
- No control of welding output.
- When welding in the Stick Mode, the current changes with arc length.
- When using “fast freeze” type electrodes such as E6010 or E7010, the welding performance is poor.
- The arc starting is not satisfactory.
- When stick welding the electrode “stubs”.
- Section G - Electrical Diagrams