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#28433 - 12/12/19 08:15 PM US Elevator Duplex Mod  
Joined: Jun 2018
Posts: 102
ElevatorGuy128 Offline
member
ElevatorGuy128  Offline
member

Joined: Jun 2018
Posts: 102
Have a customer with 2 US Elevator cars, both hydraulic looking to do a mod to tank controller and wiring/some electrical. they have handicap tenants in the building so we are looking to mod the slave car first to leave the master car in service for handicap accessibility, working on the master once the first mod is completed and running. Their current company says it cant be done, im almost certain there is a way, even with cars this old (80s). Trying to get by the site to look but wanted to see if anyone had any experience with taking one out of service for a mod while leaving the other in normal operation.

Thanks for any help.

Tom

#28435 - 12/13/19 01:31 AM Re: US Elevator Duplex Mod [Re: ElevatorGuy128]  
Joined: Dec 2010
Posts: 566
elmcannic Offline
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elmcannic  Offline
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Joined: Dec 2010
Posts: 566
S. Central Utah
First off, you’d be smart to get your hands on the job prints (if still available) and copy them, or a comparable duplex set from that era.
Yes it can be done...it happens all the time. You say “master and slave” cars...this is a US MP1230 processor based controller?
There is a car 1 and car 2 designation if it’s a 1230 duplex, but either car can be a simplex even with fire service.
There is a bit more to converting the 1230 duplex to a simplex (good luck there), but job prints will help on the controller side.

If it’s a standard R10 relay based control, again, either car can be a simplex, and you’ll need correct prints for the job to separate or remove duplex interconnections.

#28436 - 12/13/19 02:09 AM Re: US Elevator Duplex Mod [Re: ElevatorGuy128]  
Joined: Dec 2015
Posts: 1,529
Indirtwetrust Offline
ElevatorPractitioner
Indirtwetrust  Offline
ElevatorPractitioner

Joined: Dec 2015
Posts: 1,529
Local 18
Ya, not sure what the problem would be. I mean of course this could be screwed up, that happens all the time too, like hacking the interconnect. But if you familiarize yourself with the controller and prints you can carefully remove all of the interconnects and yank the other controller. I’m not sure how a legitimate elevator company could claim that couldn’t be done. You’re sure they weren’t asking to duplex the new with the old? That would be much more of a challenge but can be done too in most cases too.

#28438 - 12/13/19 03:53 AM Re: US Elevator Duplex Mod [Re: ElevatorGuy128]  
Joined: Aug 2016
Posts: 35
RustyIron Offline
newbie
RustyIron  Offline
newbie

Joined: Aug 2016
Posts: 35
Socal
Like the others suggested, separating the two shouldn't be a very big challenge. The 1230's are pretty basic. U.S. relay controllers from the same period should still be not-too-difficult to cut apart. My experience is with putting them together, not taking them apart. Don't expect to find comprehensive prints like we're used to in the 21st century. Back in the 80's, U.S. would send out a generic print, and it was up to the installer and adjuster to decide how to complete a non-standard installation.

#28450 - 12/16/19 01:17 PM Re: US Elevator Duplex Mod [Re: ElevatorGuy128]  
Joined: Jan 2010
Posts: 662
danzeitz Offline
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danzeitz  Offline
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Joined: Jan 2010
Posts: 662
st.louis mo
I agree with all above it’s just what we do not a big deal. Unless there is more to the story. Like one car has rear opening or serves an extra floor. But even then it wouldn’t matter what the old controls were.


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