Home Forums General Discussion Technical Questions Dover 1969 pass traction

Not sure what these units a referred to as but it’s a late 60’s early 70’s duplex unit with the vertical selector My second car isn’t dropping hall calls at any floor except main. Car calls drop out as they should. First car is working fine. Occasional leveling issue at main but the hall calls drop normally for that unit. Can’t find a good print for this. Any help appreciated

We used to call them gull wing because of the side swing panels.. I believe you still have UC, DC and CC for call cancelling relays. This function should be on the logic controller, and not on the power controller.. Look for relays with loose rivets. This was fairly common on PB relays, /when coil energizes, the armature pulls in, but the plastic doesn't follow due to loose rivets. Good Luck

Does the car stop in response to the calls and just not cancel them, or does the car not stop except at the terminals?

On the selector, I believe there are UC and DC selector brushes to cancel the Hall calls also

What's your email, I can send you a pdf set for a duplex.

[email protected]. Thanks

The car stops and will cancel car calls but won’t cancel the hall call up or down.