WITTUR WSG-SF Series, Руководство по эксплуатации

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Subject to changes without notice ! Änderungen vorbehalten !
Gearless Lift Machine
WSG-SF
Operating Instructions
EN
Code: GM.8.004284.EN
Date: 28. Jan 2020
Version: 0.16
Page: 21
7.2. Emergency evacuation
DANGER
f
All actions for evacuation in case of emergency have to be done by qualified service personnel.
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When attempting an evacuation, the car may not move even when the brakes are released, as a result of load
compensation between the car and the counterweight. In this case, add weight to the car by suitable means, e.g.
sand bags, or use the mechanical return motion device..
Manually operated evacuation in case of emergency
•
The brakes can be opened manually by using the release levers (option)
•
Two different options can be chosen (shown in the following pictures). The installation and operation of this device is
described in section „11.3. Brake manual release“ on page 33.
Manual lifting rods (machine room): Brake manual release remotely controlled:
Release
lifting
rods
~800 N
Release
•
Is the brake opened manually, the cabin moves in the direction of the higher weight.
•
The motor winding has to be short-circuited via the motor contactors. With the short circuit the motor cre ates a brake
torque, which is dependent on the motor speed. This prevents an uncontrolled acceleration of the elevator.
•
It is possible that the brake torque which is created by the motor short circuit is not enough to limit the speed of the
elevator. Therefore the cabin speed has to be observed carefully during the evacuation and if needed, the evacuation
has to be stopped.
• When the cabin has reached the next floor, the manually opened brake is closed again. The rescue of the trapped
persons in the cabin can begin.
WARNING
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Make sure that you restore the lift system to its original state after completing the emergency evacuation. Take
particular care to remove the lever extensions and all parts of the mechanical return motion device.
Electrically operated evacuation in case of emergency
•
The electrical opening of the brakes is done using the power grid or an UPS.
•
The operating instructions of the controller, the inverter or the evacuation unit with UPS have to be fol lowed!