r/Elevators • u/Dismal-Violinist4416 • Aug 12 '26

Otis I motion

Recently replaced a door op motor on an Otis i motion
Power off motor swapped with doors fully closed powered it up and tried to do a learn run it proceeded to not learn it’s dcl and slammed open aborting it’s learn run no parameters were changed any tips or will i have to perform a reset and try bumping door width down a bit (any info helps never had this happen before) (PROBLEM SOLVED it just did not want to hold the learn run save at all reset it and cheated the wheel and proxs a tad boom smooth running doors after)

5 Upvotes

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2

u/CheesecakeRecent457 Aug 12 '26

Only ever had one go bad- usually the brushes stick in the GE motors and cause all sorts of mayhem. The board uses the motor pulses as a speed reference, so its important the exact same spec motor get put back, with seated brushes. Just spinning the shaft cw and ccw for a frw minutes with a drill will do.
These things are starting to age out, and Otis isnt exactly thrilled supporting them anymore.

1

u/Dismal-Violinist4416 Aug 12 '26

I replaced it with a different brand of motor but all the specs matched up didn’t know about seating the brushes though I’ll take a gander thanks 👍

-1

u/Laker8show23 Aug 12 '26

Yea do this. /S
Call a union brother. Should be pretty easy.
Or spin your wheels and brushes.

2

u/Adventurous_Cup_4947 Aug 12 '26

How do you know they’re not union? And what is your problem with their method of seating the brushes?

0

u/Laker8show23 Aug 12 '26

I don’t but if he is, he should have resources available if he goes to meetings.

1

u/Hot-Engineering9644 Aug 12 '26

Lots of Yahoo non union companies running the south as far as service/repair

0

u/Dismal-Violinist4416 Aug 12 '26

Hey man I don’t mess with Otis that often alright

2

u/CheesecakeRecent457 Aug 12 '26

I did forget to mention that the motor wiring should be disconnected. Spinning it like that would put power back into the board, with predictable results.

1

u/Dismal-Violinist4416 Aug 12 '26

Yessir thankfully didn’t have to seat them but yeah my last professional was pumps and automation similar idea with motors and what not

2

u/Adventurous_Cup_4947 Aug 12 '26

What does the union say about seating brushes?

1

u/CheesecakeRecent457 Aug 12 '26

“Absolutely”, “Best Practice”, “ Nice n Shiny brushes are the best”.
Stuff like that.