User Manual

18 Source 4 WRD
Clean 5° and 10° polymer lenses
To quickly clean the lenses, remove dust with a blast of oil-free air. If this is not
sufficient, follow these steps.
1: Remove the beam focus knob at the bottom of the barrel. Remove the
lens tube from the barrel.
2: Use a Phillips screwdriver to remove the brackets that hold the lens in
place. Remove the lens from the tube.
3: Dip the lens in a clean isopropyl alcohol/water mixture (9 parts water to
1 part isopropyl alcohol).
4: Use a soft moistened nylon bristle brush to wash the smooth side of the
lens in a linear (non-circular) motion.
5: Use the same brush to lightly wash the ridged side of the lens by
following its ridges.
6: Dip the lens in a clean isopropyl alcohol/water mixture (9 parts water to
1 part isopropyl alcohol).
7: Dry the smooth and ridged surfaces with an air gun. Make sure the air
flow moves liquid away from you.
8: Inspect the lens for dirt. Repeat steps 3–7 if necessary.
9: Set the lens back in the lens tube with the ridged side facing the front
of the tube. Reinstall the lens brackets.
10: Slide the lens tube back into the barrel with gel frame retainer on top.
Reinstall beam focus knob.
CAUTION:
Handle polymer lenses by their edges only. Never rub
anything dry on a polymer lens.