Conventional incandescent bulbs wear out over time. They must be replaced approximately every 2 years, even when they are still in good working order. This does not apply to halogen bulbs, which are used, for example, in headlights. These bulbs usually last much longer and must only be replaced if a fault occurs. An incandescent bulb with reduced luminous intensity is recognized by black deposits on the glass.
Before replacing an incandescent lamp, switch off the corresponding power consumer using the switch.
Caution: Do not touch the lamp glass with bare fingers.
Fingerprints, due to the heat emitted by the lamp, evaporate from the glass surface and settle on the reflector surface, reducing its reflectivity. Replace the incandescent lamp only with a lamp of similar design. Remove stains accidentally caused by contact with a clean, lint-free cloth soaked in alcohol or spirits.