User manual

Cleaning Lens and Reflector

Replace lenses if they contain visible damage (cracks or deep scratches) that may impair their

effectiveness.

Cleaning 14°, 19°, 26°, 36°, 50°, 70°, 90° and all EDLT glass lenses

Step 1: Remove the beam focus knob and retainer bolt from the barrel (see Figure 1). Remove

the lens tube from the barrel.

Step 2: Remove dust with a blast of oil-free air or wipe with a clean, lint-free cloth. Isopropyl

alcohol, distilled water or a 50%-50% mixture of each can be used to clean the glass

surface.

Step 3: Slide the lens tube back into the barrel with the color frame retaining clip on top. Reinstall

the beam focus knob and retainer bolt.

Cleaning 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.

Step 1: Remove the beam focus knob at the bottom of the barrel (see Figure 1). Remove the lens

tube from the barrel.

Step 2: Use a Phillips screwdriver to remove the brackets that hold the lens in place. Remove the

lens from the tube.

Step 3: Dip the lens in a clean isopropyl alcohol/water mixture (9 parts water to 1 part isopropyl

alcohol).

Step 4: Use a soft moistened nylon bristle brush to wash the lens’ smooth side in a linear (non-

circular) motion.

Step 5: Use the same brush to lightly wash the lens’ ridged side by following its ridges.

Step 6: Dip the lens in a clean isopropyl alcohol/water mixture (9 parts water to 1 part isopropyl

alcohol).

Step 7: Dry the smooth and ridged surfaces with an air gun. Make sure the air flow moves liquid

away from you.

Step 8: Inspect the lens for dirt. Repeat steps 3-7 if necessary.

WARNING:

Do not use ammonia-based or other harsh commercial cleaners. Clean lens

and reflector only as directed.

Commercially available glass cleaning agents should be avoided as they

may contain ammonia, other harsh chemical detergents or abrasive agents.

These cleaners may damage the glass surface and the Anti-Reflective

coatings. Do not immerse or soak the glass in any cleaning solution.

Note:

To clean the inside of lenses, it is necessary to remove the lenses from the lens

tube for cleaning. Instruction for removing the lens can be found in the Source

Four Assembly Guide available for download at our website:

www.etcconnect.com.

CAUTION:

Handle polymer lenses by their edges only. Never rub anything dry on a polymer

lens.