Elevator Forum

The unit starts in the opposite, of the selected direction. Maybe the motor phased wrong, or the wrong contactor pulled in. Possible encoder issue. It...

With the car at floor level, the doors closed and ready to run. Are these led's high on the LCE Bd. sfty string, car door locks, ldg door locks, car l...

I don't think the HS used a position encoder. Although the SL did if it was over 2 stops.

Does the car run once then fault, or does it happen intermittently? I believe it is looking at an auxiliary contact on on one of the contactors. Do yo...

One more thing, I have worked many a power plant outage. If this is a coal fired plant, the corrosive atmosphere causes the pins, and plug in cables t...

Have you checked all your ground reference points. GDR starts at the Miprom II power supply. I don't have a print for the drive you are working on. Pa...

thanks, I have to inspect one tomorrow. They may need some help methinks.

If one suspension rope broke, I would imagine it was carrying most of the load,and it needed to be re-tensioned. Unless a shackle let go somehow. It i...

The test for unintended movement, and ascending car is to assure the E-Brake or Rope Gripper will decelerate, and stop the empty car in the up directi...

Your choices are reduce capacity, or Modernize. The unit is 90 years old. It has served admirably. Give it a salute and replace it.

You are absolutely under counter weighted. If you pull more amps empty car up you do not have enough counter weight. To see how much, you have to eith...

I would say you are under counter weighted. Many Drum Machines had 2 sets of counterweights, one to account for the weight of the car, and then anothe...

perhaps your ticking the door lock.

Yikes! This would never pass a QEI Inspection in the US. You need an enclosed Machine Room for sure. As heisenberg explained some brake adjustment wou...