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5.Maintenance
Cleaning the lens:
Blow loose particles from the lens using clean compressed air. Gently brush remaining debris away
with a camel’s hair brush. Carefully wipe the surface with a cotton swab moistened with water.
NOTE:
DO NOT use solvents to clean the lens.
Clean the housing:
Use soap and water on a damp sponge or soft cloth.
NOTE:
Be careful not to allow any liquids or moisture to get inside the tachometer.