It's very important before convert to equipment, create AutoCAD Block with the solid 3D. This is the way for modify in the future this equipment, with autocad command BE (Block Editor).
Now if you want you can copy the equipment, use the command EXPLODE, and modify the block in place.
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Yury Bogdanov
ASIDEK(Grupo CT) - Partner Directo de Autodesk
Barcelona (Spain)