Lamps should be installed, connected and tested by a certified installer based on the local regulations.
Pls check local voltage in accordance with the product requirement.
Relamping only can be done when the power is off and the lamp is completely cooled down.
When a lamp is to be cleaned, make the power off and let it cool down completely. Clean the fixture with a soft cloth and a standard PH Neutral detergent.
Do not cover the fixtures with flammale materials.