Warning: I just read a report about elevator door reopening devices failing after 200,000 cycles

I was looking through some old inspection bulletins from the state safety board last night. One from 2019 had a case study of a hospital elevator in Cleveland where the door reopening device failed. The report said the infrared sensor passed a basic test, but the mechanism that actually stops the door had worn out after about 200,000 cycles. They found the plastic cam was completely sheared. I never thought to check that specific part during a routine service. How often do you guys actually inspect the physical stop mechanism, not just the beam?

2 comments

2 Comments

felix982d ago

Check the cam wear during annuals, not just the beam.

phoenix_schmidt1d ago

Wait, people are skipping the cam check? That's a huge part of the inspection! I can't believe someone would just look at the beam and call it good. Good call pointing that out, @felix98. The cam wear tells you so much about the real load history and alignment issues. Skipping it is just asking for a nasty surprise later on.