Troubleshooting & repair, Scr heat sink assembly removal, Warning caution – Lincoln Electric SQUARE WAVE TIG 255 SVM100-A User Manual
Page 83
SQUARE WAVE TIG 255
F-42
TROUBLESHOOTING & REPAIR
SCR HEAT SINK ASSEMBLY REMOVAL
TEST DESCRIPTION
The following procedure will aid the technician in the removal and replacement of
either or both of the two SCR heat sink assemblies.
MATERIALS REQUIRED
7/16” socket and box wrench
1/2" socket and box wrench
9/16” socket and box wrench
ohmmeter (multimeter)
Dow 340 heat sink compound
WARNING
CAUTION
Service and repair should only be performed by Lincoln Electric factory trained person-
nel. Unauthorized repairs performed on this equipment may result in danger to the
technician or machine operator and will invalidate your factory warranty. For your safe-
ty and to avoid electrical shock please observe all safety notes and precautions
detailed throughout this manual.
If for any reason you do not understand the test procedures or are unable to perform
the tests/repairs safely, contact the Lincoln Electric service department for technical
troubleshooting assistance before you proceed call 216-383-2531 or 1-800-833-9353
(WELD).
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If machine case sides and top are removed the case back and front must be support-
ed. Failure to do this could result in mechanical or electrical damage to the TIG 255.
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