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#29731 - 08/05/20 06:08 PM Dover traction with overhead selector  
Joined: Feb 2015
Posts: 19
ascendelev Offline
stranger
ascendelev  Offline
stranger

Joined: Feb 2015
Posts: 19
I have a Dover traction with IBM relays. The issue I'm having is, the elevator stops at every floor in the up direction and the down arrow is lit. The elevator runs fine in the down direction. Any help would be appreciated.

#29733 - 08/06/20 02:37 AM Re: Dover traction with overhead selector [Re: ascendelev]  
Joined: Dec 2010
Posts: 566
elmcannic Offline
addict
elmcannic  Offline
addict

Joined: Dec 2010
Posts: 566
S. Central Utah
Well, assuming up calls aren’t lighting up without physical button demand, I’d look at wire pins or worn relay components (N.O.-N.C. stationary contacts) in the following areas;
Up call cancel/stopping circuit, hall and car.
Selector relay contacts, directional relays as well.
The down arrow issue might be the relay that supports the voltage to the arrow itself.
Hopefully you have composite prints to help you track the areas you need to cover.
If you have access to a relay checker, that would be a big help.

Be careful inserting the relays back onto the relay base as those stupid copper base contacts will fold over.

#29735 - 08/06/20 12:38 PM Re: Dover traction with overhead selector [Re: elmcannic]  
Joined: Feb 2015
Posts: 19
ascendelev Offline
stranger
ascendelev  Offline
stranger

Joined: Feb 2015
Posts: 19
Thank you, I will take a look.

#29749 - 08/11/20 02:53 PM Re: Dover traction with overhead selector [Re: ascendelev]  
Joined: Jan 2014
Posts: 141
Boa Offline
member
Boa  Offline
member

Joined: Jan 2014
Posts: 141
NC
Take a look at the copper floor contacts if worn the skis won’t ride right


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