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Picked a used MRL over a geared machine for a 6-stop job...

I had to choose between a used machine-room-less setup and a new geared machine for a 6-stop apartment building in Akron last month. The owner wanted to save money but the shaft was tight, so I went with the older MRL unit from a 2018 tear-out. It was a gamble since I had to rework the guide rails and install new sheave bearings myself. After about 12 hours of tweaking the controller parameters, it rides smooth and quiet. The customer saved about $4,000 compared to the new geared quote. I'm glad I took the risk on the used gearless drive, but I'm curious if anyone else has had luck swapping controller boards on those older Kone models?

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2 Comments

casey162mo ago

That line about tweaking controller parameters for 12 hours hit close to home. I once spent a whole Saturday tuning an old Otis just to find out a capacitor was cooked.

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jennys722mo ago

Used a Kone monospace from 2015 on a 12-story here in Cleveland last year. Had to swap in a DX controller with an aftermarket board, took about 8 hours of trial and error. Runs fine now but I'd rather buy new if the budget allows.

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