Otis Gen2 door sensors need cleaning way more often than the manual says

I work on elevators in a shopping mall in Dallas and kept getting calls for doors not closing on a set of 6 Otis Gen2 units. Spent a full afternoon tracing wiring and checking boards before I noticed the sensor lenses had a thin film of dust on them. Shop rag and some glass cleaner fixed all 6 cars in about 20 minutes. The manual says to clean them every 6 months but in a dusty environment like a mall food court area it needs to be more like every 6 weeks. Has anyone else found a better way to keep those lenses clean between visits?

2 comments

2 Comments

nancybailey13d ago

Six weeks sounds about right for a food court setup, that dust buildup is relentless.

the_parker13d ago

The grease trap behind the teriyaki place at my local mall was basically a biohazard after Week 4, @nancybailey. I feel you on that dust too, it gets caked into every little ledge and vent. I saw a guy wiping down the same stainless steel counter three times before lunch rush and it still looked cloudy. It's like the food court just BREATHES grime into the air.