Keep the projector air filters clean. Clogged filters and/ or vents will not vent heat properly, and can cause the projector lamp to overheat and fail. Have your AV specialist service the projector every 100 operational hours. Do not place anything on top of the projector or in front of the intake or exhaust vents. This will cause the lamp to overheat and fail. Do not unplug the projector until the lamp has properly cooled. After the projector has been shut off, the fan will remain on for about 5 minutes. This aids in cooling the lamp evenly and completely and decreases the chance of early lamp failure. Do not turn the projector on and off frequently during presentations. Each time the projector is switched on, the inrush of power causes stress on the lamp. Try to minimise on/ off cycles. Some projectors offer "low lamp" or "economy mode" options. Use them whenever possible. These options have been developed to extend lamp life. When a lamp replacement is due rather have it done by your av specialist. Do not handle the lamp without gloves. Oils and deposits from hands and fingers can cause hot spots, which may result in premature lamp failure.