c/elevator-mechanics

All those guys saying roller guides are better than slide guides? Took me 4 years to see it.

I was at a job site in Columbus Ohio last month where an old Otis lift was getting a full guide replacement. Customer wanted rollers. I argued for slide guides because that's what I grew up with on these older cars. The senior lead there finally had me ride the car with him after the swap. Could not believe how quiet it was on the ride up. Floor leveling was spot on too. Has anyone else switched over and noticed a difference in ride comfort on older cars?

I skip the door dwell adjustment on most MRL jobs and it works fine

Everyone I work with swears you have to set the door dwell exactly per the manual for every MRL. I tried that on a 2021 Otis install in Denver and it gave me nothing but nuisance reopening calls. Started setting it just under what the book says and knocking 0.3 seconds off the close time. That was 18 months ago and I haven't had a single callback on that bank. I do still set it tight for hospital or nursing home elevators where people move slow. Am I the only one who tweaks this without the factory specs?

That time I skipped the leveling jacks on a short pit job in Chicago

Last month I had a hydro in a tight 6-foot pit and the jacks wouldn't fit, so I just shimmed the rail brackets by eye and ran the car. It leveled within 1/8 inch on every floor after three test runs, no adjustments needed. Anyone else ever skip a standard step and have it just work out weirdly perfect like that?

Had a door leveler on a unit in Denver that kept drifting...

Been setting them with the bubble pack for 12 years. Thought I had it dialed. Then the customer complained about binding on the 3rd floor. Foreman came up, put his $40 digital level on it, and it was off by almost a 32nd. He showed me how the bubble level gets loose after a few drops off the truck. Now I check all my setups with a digital every time before I button up the cab. Anybody else run into this with the old bubble style?

Last week a hospital job in Cleveland taught me a hard lesson about old door safety edges

I was swapping out a hydraulic controller in a 1970s freight elevator and got zapped by a frayed door edge wire that had been rubbing for years. Nobody had flagged it on the last inspection and it nearly knocked me off the ladder. How do you guys handle aging safety edges on old Otis units before they become a shock hazard?

That time I bypassed a door lock relay on a 1993 Otis and it actually worked

Had a call last Tuesday at a 12 story office building in Cincinnati where the car was stuck between floors. Spent 2 hours tracing the door lock circuit in the machine room before I remembered an old trick from a guy who retired back in 2018. Jumped the relay with a paper clip just to test my theory and the doors cycled right open. Anyone else have a hack like that which feels sketchy but never fails?

Talked to a retiree at the union hall who said he never rode an elevator he didn't install himself

He told me he trusts the motor and the rails but not the door safety edges because he's seen too many fail on paper, and that stuck with me all week - has anyone else heard old-timers say something similar about a specific part?

Just learned a surprising stat about elevator door lock monitoring

Worst week of my career: 3 stuck cars in 2 days downtown

Last Tuesday started with a no-heat call on a 20-year-old Otis in the Grand building. Got there, found the controller board fried. Then Wednesday I got two back-to-back entrapments in the same block. First one was a simple door lock issue, second was a brake jam on a hydraulic unit. Took me 6 hours just to get everything moving again. Has anyone else had a week where nothing goes right and you're just fighting fires?

Surprised by how many elevators still use relay logic from the 1960s

I was digging through old manuals at a building in St. Louis last week and found out about 15% of elevators in older high rises still run on relay logic controllers. That blew my mind since I figured most had been swapped to microprocessors by now. The guy who trained me said some of those systems have been running 50+ years with just basic maintenance. I guess if it ain't broke, don't fix it right? Has anyone else run into one of these old relay panels recently and had to troubleshoot them?

Spent $300 on a custom controller board that fried on day 3

I picked up a fancy aftermarket controller for an Otis lift in a 12-story building in Denver. Thought I was saving money over the OEM part, but it started throwing errors on startup by the second day. By day three, it completely smoked out and I had to pay a guy $200 in overtime to help me swap it back to the original. Has anyone else gotten burned by these third-party boards or am I just unlucky?

That magnetic brake tool I laughed at for 6 months finally saved my back

I had a buddy swear by this magnetic brake release tool for leveling machines, and I told him it was a waste of $45. Last week I had to swap a controller on a MCE iBox in a tight machine room in St. Louis, and my lower back was killing me after 20 minutes of reaching. I borrowed his tool on a whim, and it freed up my hands so I could work standing straight. That thing legit took 2 hours off my install time. Has anyone else tried one of those and actually seen a difference on hydraulic jobs?

I wasted $400 on a cheap controller board replacement

Last month I tried to save money on a MCE controller board for an Otis lift in an old building downtown. Figured it would be a straight swap, but after three hours of troubleshooting it just wouldn't sync with the door locks. Ended up buying the OEM part for $850 anyway and had to eat the cost of the first one. Has anyone else dealt with knockoff boards that just don't work right?

Switched from rope to drum for a 15-stop mod and will never go back

I always used rope governors on modernizations because that's what I learned on, but last week I did a 15-stop hydraulic in an old office building in Des Moines and swapped to a drum type. The drum was way easier to adjust and I didn't have to fight with fraying rope near the sheave. Has anyone else made the jump and noticed a big difference in setup time?

Nailed my first major rail replacement in a 30 year old Otis today

I'm still buzzing honestly. Building was a 12 floor office tower in downtown Minneapolis, the rails had like 1/8 inch wear in spots. Took me three tries to get the alignments perfect on the first car, but once I got the hang of it the second car went smooth. Anyone else find older hydraulic systems easier to work on than modern ones?

Blew $120 on a leveling tool that was total junk

Picked up a new digital leveling laser from a supply house in Chicago last month because my old one was acting up. First job I used it on had me recalibrating every 10 minutes and it threw the whole car alignment off by nearly an inch. Anybody else get burned by one of these cheap laser kits or is it just me?

Unpopular opinion: I think the new code on door zone clearance is overkill

I was working on a bank job in Charlotte last year, and the inspector failed us for a 3/8 inch gap instead of the new 1/4 inch standard. We had to re-shim the entire door frame for a Friday afternoon call back. That extra 1/8 of an inch cost the company 4 hours of labor on a perfectly safe install. I get safety is key, but sometimes the rules feel like they're made by people who've never had to actually make the fix. Has anyone else run into this and found a faster way to adjust the sill without a full teardown?

Bought a $90 inspection camera for a tight hoistway and it paid for itself in an hour

Was looking at a weird noise in a packed machine room and couldn't see past the motor. The camera on a bendy cable let me spot a worn sheave groove without taking everything apart. What's your favorite tool for jobs where you can't see a thing?

I just hit 500 elevator door adjustments in my career logbook and that number kind of blew my mind

Warning: Don't trust the old prints on a 90s Otis Gen2 without checking the sheave grooves first.

Had a call for excessive vibration on a unit in the downtown library. The prints said the sheave grooves were standard, but after three hours of chasing other issues, I finally miked them. They were worn almost 1/16" deeper than spec. Threw on a set of oversize belts as a temp fix and the noise stopped immediately. Anyone else run into mismatched specs on these older models?

Had to choose between a new $1200 hoist motor or rebuilding the old one on a 1980s Otis unit last Tuesday. Went with the rebuild.

The old motor was making that classic grinding noise, you know the one. Boss wanted to just slap a new one in and bill for it, but I had a feeling the armature was still good. Took it apart in the shop and sure enough, it was just the brushes and commutator were shot. Three hours of cleaning and new parts later, it purrs like a kitten. Saved the building manager a chunk of change and I got to keep a piece of history running. Anyone ever had a rebuild surprise them by holding up for years after?

My old foreman told me to never trust a 20-year-old hydraulic valve without checking the seals first. Guess what blew out on a 3-story lift yesterday?

Just logged my 500th call for a stuck door switch on the same model

I keep a simple log of common fixes in my phone, and this morning I hit 500 entries for 'door switch, Model 7C, binding at top roller'. That number hit me hard because it's not just a part wearing out, it's a clear design flaw they never fixed. Every single one is on buildings under 10 years old, and the switch pocket is just a hair too tight. It collects dust and grit, then the roller jams. I've started carrying a specific file in my kit just to widen that pocket by a millimeter during the call. It adds maybe five minutes to the job but saves a callback in six months. Has anyone else found a better long-term fix for this, or are we all just doing the same little grind to keep them running?

A talk with a fire inspector about elevator recall testing made me double-check our logs

I ran into a fire inspector named Carl at a job site in Springfield last Tuesday. We were chatting about the annual tests, and he offhandedly said, 'You know, I see a lot of guys just check for the car to move to the recall floor. They don't always verify the lobby signals and the door re-open function actually cut out.' That hit different because I've been guilty of that exact shortcut on a busy day. It's easy to see the car go to the lobby and call it good. But if the visual signal in the hall doesn't light up or the doors don't stay locked, it's not a full test. That could mean big trouble during a real fire. Now I'm going back through my last six months of test sheets to make sure I noted every step. Has anyone else had an inspector point out a common step we might be missing?

Bought a $400 thermal camera for tracing door operator circuits.

Found a bad relay in five minutes on a job that would've taken half a day with a meter. Anyone got a better brand they swear by for this kind of work?