Have a duplex Westinghouse hydro and one car is not opening doors at the floors. It slows down and levels in but isn't stopping long enough to get 44 and 44a every time. All notching is working correctly and once in awhile it will work as it should, usually when there is no demand from hall calls. When this happens the car will act like it is lost and do a terminal floor correction run and the doors will open fine. One thing we notice is that 45t doesn't drop out or doesn't stay dropped out long enough to allow us to pick 44 and 44a. Going to shut other car off and tag the hall stations to see if it will work fine every time with no hall calls placed. Any ideas boys?

One last thing.........we are modding these cars soon, signed contract and parts ordered, but we need to make this thing work in the meantime.

VTNY
43 is close, 44 is open, 45 is the master and 45t is is the master timer.
Can you give more info?
What is the model?

jkh is right, you need to get in the 45 circuit and see what drops 45 to pick 44. 38=car call & 438=hall call stop. What kind of door operator? HY? An old circle W hydro isn't gonna go do a correction run at a terminal unless it's skipping floors and ends up there. Has someone added a door zone feature? Hate to ask, did you check the door motor brushes? OL? 43 back contacts?

I probably said too much. Just start at the 44 coil and work your way back, you'll find it.

Still having issues. Car is still running top to bottom and will slow down and level into a floor and then take off. Can get it to stop and open doors if while it is leveling in we physically hold in 42 (corridor door open relay). One other thing.......if you stand in the hallway and hold in on either hall button at the floor it is leveling into, it will stop and open doors! It does this whether the other car in the duplex is on or off, doesn't matter. Selector is notching ok,selector resets at top and bottom like it should. It just thinks it is lost and is driving us bonkers.

VTNY
Do you have prints?
What model?
What are the drawing numbers?

VTNY
I'm asking for this info because there is many different models and each have several different drawings.

It is a 2c-2bc-hyl

172c - wiring diagram. I may be onto something though.....these cars have Electrolock Door restrictors on them and there is an ice cube relay (DUL) that is wired in between the door open limit and LA and we are checking to see if that ice cube is pulling in. This is only wired into the 44 door open relay, not the 42 door open relay. trying to find where they have added the coil for this DUL relay on these prints.

This is typically added to prevent the car doors from opening in flight in response to a door lock clip. The HY's are well known for this. I would install an extra switch on the selector "door zone" and wire it in series with the door open signal to the door operator.

Yes, I know what it does, and this ice cube relay has a set of contacts that are wired in series with the door open relay (44) but of coarse no one marked up the prints to show where the coil is for that ice cube and what pulls it in. Not even sure that is our problem but I am leaning towards it. The only thing that bugs me is that you can hold in on 42 when it's leveling in and then the car will stop and open the doors.

You need to start at the 44 coil and work your way back. Apparently 34's aren't picking or you'd be stopping at the correct floor. Picking up 42 while the car is at the floor will/should drop 45. Somebody has obviously been cutting into the circuitry. Probably need to pull wires and draw the circiut out.

I have a 2C2BC ERL that had some issues when I added a circiut to keep from hanging the restraint hook on an emergency stop in between floors. Turns out the previous elevator company made some wiring changes and didn't know and landed the wires on the wrong sides of the numbered/un-numbered contacts.... Took a while to fix that mess..

Interesting. I would look at(just guessing without knowing this type)

- Lock covering ccts to hold in door open signal(is there a pre stop open signal)
- Are you losing the door open too early?
- Is the lift actually stopping and then is door open actually coming in yet not staying in?
- Does it work on a landing call as normal?
- If you have a selector you may have a broken wire in the trailer?
- Does the lift stop on other floors? If it does are you losing this levels DZ vane or what ever it uses for a door zone reader? Remember it still could be a selector wire.
- Is the lift actually climbing or is it getting lost( what we call out of step), then resetting to top/bottom floors, then thinking I still have a call to answer and this is the reason why it doesn't open its doors?
- Put the lift on exclusive(independant) control to test this also.

Just a few idea's I would have to look at for any lift type and fault like this.

Door non interference timer. What a pain in the arse that was!