Cleaning Instructions

Lattice and base

Turn off the detection system prior to using liquid cleaners. Remove dirt and greasy buildup using towels or soft cloths that have been dampened with a common household grease-cutting liquid cleaner. 3M suggests a monthly cleaning to retain the best equipment appearance.

Photocell lens and reflector

At least once a month, wipe the photocell lens and reflector with a soft cloth dampened with water.

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3M 3900 owner manual Cleaning Instructions, Lattice and base, Photocell lens and reflector