Appreciation post: finally nailed a 48-hour load test after 6 tries

I've been fighting with a MRL elevator in an old building downtown for weeks. The problem was the brake pickup voltage kept drifting after about 30 hours. Turns out the contactor points were just slightly pitted from years of use. I replaced them last Tuesday and the test passed without a hitch. It felt good to finally close that call after the third time the customer called me back. Has anyone else had a similar issue with older MRL units in commercial buildings?

2 comments

2 Comments

betty12624d agoMost Upvoted

That part about the contactor points surprised me, I always blamed the controller first.

the_spencer24d ago

Oh man, I've been there too. Once you clean or replace those contactor points, the problem usually disappears.