2 High-Rise Schindler modded Schlieren Lifts in Chur, Switzerland

Timestamps:
0:00 intro
0:23 normal ride
2:44 motor room
6:15 car top / lift shaft

These lifts are situated in a residential block in Chur, Switzerland. They were built by Schlieren in the 1970s and installed upon construction of the tower. Originally, these lifts were 2-speed. They used Schlieren's own relay controller with motorized floor selector.

In 2008 the lifts have been modernised by Schindler. The complete electric part has been replaced with MX-GC controllers and Variodyn drives, as well as FI MXB buttons. The speed of 1.2m/s has been left unchanged.
The original Schlieren landing doors have also been kept and adapted to work with a new Schindler QKS inner door.

Interesting choices have been made regarding the motors:
The small lift has a standard W163 machine with a gear ratio of 43:1 and a 570mm traction sheave. This would only result in a speed of 1m/s at 1440 rpm, therefore a 1800 rpm motor was used instead to rech the 1.2m/s.
The big lift uses a P420 planetary geared machine. These gearboxes were manufctured by ZF (Zahnradfabrik Friedrichshafen) for Schindler and are pretty rare.

Manufacturer: Schlieren, 1970s
Modernised: Schindler, 2008
Capacity big: 10 persons / 750 kg
Capacity small: 6 persons / 450 kg
Type: Traction, 1:1 roping
Floors: 20: -2, -1, 0, 1 - 17
Fixtures: Schindler FI MXB
Speed: 1.2 m/s
Travel height: 54.1m
Logic: Schindler Miconic MX-GC
Drive: Schindler Variodyn VF22BR
Motor big: Schindler P420, 12 kW
Motor small: Schindler W163, 11 kW

WARNING/DISCLAIMER: DO NOT attempt to copy anything shown in the video without having the proper knowledge of how to do so! LIFT SHAFTS and MACHINE ROOMS are very DANGEROUS places and are NOT MEANT to be accessed by inexperienced or untrained personnel!
Dangers in these environments include but are not limited to crushing, electrocution, falling and burns.

Recording: Q4 / 2021