Chapter IV – Maintenance
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Chapter IV Maintenance
The Precision II series requires minimal maintenance, however, there are
some things that should be checked on a weekly basis.
Examine the optics biweekly and clean as inspection warrants. Initial
cleaning can be done with pulsed air. Then, if streaks or dust persist, the
optics should be carefully cleaned with soft optical tissue and either
reagent grade methanol or isopropyl alcohol.
A. Cleaning optics
Equipment needed:
• reagent grade (or better) methanol
• lens tissues
• hemostat (surgical pliers)
• finger cots or surgical style gloves
• cotton swabs
• eyedropper
Unmounted optics
1) Always wash your hands first in order to remove all dirt
and oil residues and put on finger cots or gloves.
2) Hold one sheet of lens tissue over optic to be cleaned.
3) Using eyedropper, place a few drops of good quality
methanol on top of lens tissue.
4) Drag the lens tissue across the optic once only.
5) If a residue of solvent is left on the optic, repeat the
procedure using less solvent and a new tissue until no
residue remains.
Mounted optics and rods
1) Wrap lens tissue on a cotton tipped applicator.
CAUTION:
When cleaning glued optics use solvent sparingly. Excessive
solvent will dissolve the glue and your cleaning action may
drag the residue onto mirror surface.
2) Apply a few drops directly on lens tissue and shake off
excess.