14
5° and 10° lens tube assembly
Tools required: Phillips head screwdriver.
1. Place the lens tube assembly (1) on your work surface with the colorframe grooves to your left.
2. If you are assembling a 5° tube, attach the handle (14) as shown on page 12, using the screws (17), washers
(16) and backing plate (15) indicated.
3. Install the required lens (5) as shown on page 12 or 13 and tube (1) using bumpers (4), screws (7), nuts (8),
and washers (9) as indicated.
Note: The side of lens with fresnel grooves should face the front of the tube. The smooth lens surface
should face the rear.
Cleaning 5° and 10° polymer lenses
Caution: Handle polymer lenses by their edges only. Never rub anything dry on a polymer lens. Do not use glass
and window cleaners on the lens.
Remove dust with a blast of oil-free air. If this is not sufficient, follow the instructions below.
1. Dip lens in clean alcohol/water mixture (10% alcohol).
2. Use a moistened nylon bristle brush to wash the smooth side in a straight motion.
3. Use the same moistened brush to clean the ridged side, following the ridges, without hand pressure.
4. Dip lens in clean alcohol/water mixture (10% alcohol).
5. Use air gun to dry the smooth surface.
6. Use air gun to dry the ridged surface. Use air stream to move the liquid away from you. Continue to remove
as much liquid as possible.
7. Inspect the lens for dirt. Repeat the entire process, as necessary.
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