PHILIPS Master Colour CDO lamps
are quartz metal halide lamps with a diffuse ovoid (egg-shaped) shape and a CDO discharge tube (from the CDM lamp. The exterior is a hard outer glass bulb with internal coated in white. They have the E27 or E40 lamp base. The CDO lamps give a warm white (2900K) color.

Replacing Philips master CDO source with E40 lamp base. Make the armature voltage. Allow to cool the lamp (may be 350 degrees Celsius!), As these have not yet burned, this may be 10 minutes in view of the high temperatures of the lamp. After this you can unscrew with a peaceful twist counterclockwise motion lamp. Placing the lamp screw clockwise until there is some resistance. -Energized making the luminaire is definitely recommended given the high ignition voltage but is often necessary to light the lamp.

Faulty master CDO lamp. Often, this master CDO lamp remains off and this for some minutes, then to start up again. It is then time to replace the lamp. Usually is to see whether any discoloration and weakening of the light.

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