Found a weird door zone trick that saves 20 minutes per landing

We had a job last week where the door zone sensor kept tripping on a Schindler 330A in a hotel lobby. Tried all the usual adjustments and nothing worked, so out of frustration I sprayed some dry silicone lube on the door tracks and it stopped false tripping immediately. Anyone else run into a sensor sensitivity fix like that or am I just getting lucky?

2 comments

2 Comments

emmam3224d agoMost Upvoted

Wait, silicone lube actually helped with sensor tripping? I had a similar thing happen last month on a KONE elevator in a mall, the door zone sensor was going crazy every time the humidity kicked up. Ended up cleaning the track with a dry rag and putting a thin layer of graphite powder on it, figured maybe the track was causing enough friction to mess with the sensor calibration. It worked for a few weeks until the cleaning crew mopped up the lobby and probably washed it off. Lube on tracks feels like one of those fix-it tricks that might just mask a bigger problem though, like maybe the alignment was off from the start.

emmam3224d agoMost Upvoted

Yeah the graphite trick is way smarter than what I was doing honestly you changed my mind.