Siemens 6GK1970–5CA20–0AA2 Instructions De Montage page 293

SIMATIC NET PROFIBUS Plastic Fiber Optic
Grinding and Polishing BFOC Connectors
To grind the BFOC connector, insert it in
the black polishing disc.
Fit the connector into the white polishing
disc
Repeat this procedure with the second
connector.
Installation Instructions for BFOC Connectors
Grind down the excess fiber by
describing a figure-of-eight on polishing
paper (400 grit) on a flat solid surface by
applying gentle pressure to the
connector.
Finally, place the light gray polishing
paper (1500 grit) on a firm flat surface
and polish the connector end face by
describing a figure of eight while applying
gentle pressure to the connector.
Repeat the figure-of-eight movement
approximately 25 times.
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Remove the connector from the polishing
disc and remove the debris with a soft
lint-free cloth.
Remove the connector from the polishing
disc and remove the debris with a soft
lint-free cloth.