Elevator Forum

You have eliminated everything except the travel wire from D010/D07, or the micro switch's being in the wrong state. Try dis-connecting the travel wir...

Good find. you need a 20UCL print. they are pretty easy to come by.

Are the acceleration relays coming in? what is the controller type?

De nada

Have you checked the Motor? Could be brushes, or wires to motor.

Adding weight to the car top may sound like a quick fix. However as a QEI Inspector, I would write this up as a deficiency, and shut the car down. You...

The print is hard to read, but it looks like you have to pick UDX to drop the DO relay. The UDX relay is picked with a direction, either up or dn. The...

Will the doors close on auto? what relays are energized? need a few clues.

Can be caused by a number of things. Usually the door is getting tight when open. Could be the sill out of alignment with the top hangars, You should ...

When the Dover Composite was put into service, the Brush was a National SA-45, they ran great with no issues. Then Dover changed to what they called t...

Did you check the binary counting i/o's with the car position. What about HCN input. do you have one? Also on the i/o boards, if you can easily wiggle...

Another cause was the ETS Switch interfered with an NTS Stop. Try moving the ETS a coulpe of inches closer to the floor. To see if you can make a good...

Do these have CSV1 and CSV2 toggling on and off? like a master/slave setup? another thought, if the output stays hi, only as long as the input, it may...

The one I worked on had the CPU and PIO laying horizontally, and a card rack with input and output boards. The only reason for an overlay, is because ...

So not exactly a 2 car group, and not quite a Miprom 21. So an at floor hall call should make DO10 output go high. DO17 the door closed limit input sh...