Elevator Forum

no diagram, but some experience. Is this relay logic, or Miprom? What is the issue

Yikes! no tool plus SL = grope city. One thing you can look at are the leveling sensors. there are 4 sensors. the car is at floor when the top and bot...

Lets pronounce this fixed. Good work.

use a spray bottle while the gen is running, on idle, on inspect. let it run like that overnight.

I know this may seem simplistic, I'm a simple man. So have you checked the Brakes. you may have a corner Dragging heating up the drum as it runs. Just...

you may have a bad key switch. One of the 50 code causes is the start switch did not return to center within 10 seconds. Another is there is no start ...

The details are sketchy, what I hear is that the he stepped on a car top that wasn't there. From the 3rd floor. RIP Brother.

try checking the Zener Diode.

I have Turned and under cut many a Comm, both Motor and Gen. The best way I found was to remove the Brushes, install the correct size tool to hold the...

Transformers and other windings use Inductive Reactance after the Voltage is applied. The Ohmic Value with no Volatge is inherently low.

Refresh my memory. Is there a timer board on this? I forget what the controller looks like.

this sure seems like a position encoder problem. when all else fails replace the relay pilot board.

These are tough ones. I have fought the same ones and have made the same changes as you have. That said here are a couple that were successful for me ...

I believe this is an early version of a Miprom SL. If so you need a service tool to work on it. These are rare birds, they run great, but if you have ...

do you have a voltage on the fields? what is the Comparator Board Trip point set at? Are the M switch Contacts good? If you bypass the Comparator will...