maintenance/
troubleshooting
SYNRAD FH Series Flyer Operator’s Manual Version 3.4
183
Maintenance
7
It may be impossible to remove all traces of contaminants from the lens surface especially near the
edges. Ensure that the only remaining residue is around the outer edges and not in the center of the
lens.
8
Carefully examine the optical surface under a good light in front of a black background. Certain
contaminants or damage such as metal splatter or pitting cannot be removed. In these cases the optic
will require replacement.
9
Repeat Steps 5 through 8 as required, removing all possible contaminants and deposits.
10
Reinstall the focusing lens. If the cleaned optic will not be used immediately, wrap it in lens tissue
and place in clean, dry storage.
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