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?

3 comments

3 Comments

nancybailey2mo ago

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

hugoh551mo ago

@nancybailey you're right about that dust, it finds its way into every nook and cranny no matter how often you clean. I've seen food court workers battling that same cloudy film on counters and it never seems to fully go away. Six weeks is probably the best you can hope for before it all starts looking tired again.

the_parker2mo 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.