Smooth the
oil lightly over the whole surface using
lint-free paper.
• Drip couple drops silicone oil on
the cleaned contact surfaces, avoid
getting oil the guide hole.
13. Then wipe the surface
in order get very thin layer oil.
• Use well moistened lint-free paper.
• Lightly polish the contact surface f
semiconductor (the nickel layer must not
be polished through) with abrasive cloth
P600 which fix flat surface.
• void contact with surface.
11.10. Rem ove the faulty thyristors.
The contact surfaces must dry before
lubrication. Mount the guide pins the bottom heatsink.
Place the semiconductor the right direction.
• Clean all polished contact surfaces
carefully with Ethanol. Connect the gate cables.
12. Preparation heat sink and semiconductor.
• Lubricate directly after
polishing/cleaning, within minutes.
Load side Line side
Load side
Thyristor
1
Line side
Thyristor
Black Blue
Brown Red
-.
• void contact with the surfaces after
lubrication. Check the semiconductor's symbol and type
specification
