Library Handbook - Frontier School Division

OVERHEAD PROJECTORS
1. Open base of unit.
2. Use compressed air blowing out as many dust particles as possible.
DO NOT WIPE ANY PART OF INSIDE BASE!!
3. Depending on the make of the unit, either unscrew or pop out the Fresnel Lens and clean the
under-side of the glass with glass cleaner or an anti-static wipe.
4. If necessary, use air on both sides of Fresnel Lens to remove excess dust. Clean both sides of
the lens with water and paper towel in a circular motion.
5. Replace Fresnel lens and close base and clean top side of glass. Be sure to place the glass back
on in the correct position. *If it projects a circle – the Fresnel Lens is on upside down.
6. Unscrew top lens compartment and use a lens cleaner to gently wipe compartment & lens.
7. Reassemble.
8. Wipe down the outer casing of the unit with and anti-static wipe.
Tips
Never touch glass with fingers (use pliers or a clean cloth) Clean with alcohol if touched.
Do not move unit while still hot, as parts are very fragile.
DO NOT USE WINDEX!
Do not touch bulb with fingers, use a soft cloth or Kleenex to change bulbs.
Use compressed air on the mirror to remove excess dust particles.
To remove fingerprints: breathe on the mirror, and rub with a non-abrasive cloth.
Trouble Shooting
If you are continually blowing bulbs, your unit may need a new lamp socket.
You can use and anti-static wipe on the Fresnel Lens, but test first. If it clouds up, use water
and paper towel.
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