Subject to changes without notice !
Änderungen vorbehalten !
Gearless Lift Machine
WSG-25
Operating Instructions
EN
Code: GM.8.002673.EN
Date:
07. May 2019
Version: 0.13a
Page: 20
Mechanical return motion device
•
For cases such as lift failure or the car being retained by the safety device, a mechanical return motion device can be
used to move the lift manually. Use of the return motion device is shown in the drawing.
•
Instructions for installing and using the return motion device can be found in section 12.5. „Return motion device“.
WARNING
f
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.
7.3. Testing the brake system to EN 81
Information
f
The brake system should be tested with the car about halfway down the shaft. If any motor short-circuit
connections have been made, these should be deactivated so that the brake effect can be tested independently.
Overload
•
The brake system should be tested by interrupting the power supply to the motor and brake system with the car
moving downward at rated speed and 1.25 times the rated load. The brake system must be capable of
decelerating the car.
Failure of a brake
•
If one brake fails, the brake system must still be capable of decelerating the car sufficiently during its down ward travel
at rated load and rated speed.
•
When simulating the failure of one brake, the other brakes must be kept open separately, even if the safety circuit is
open. This should be done using suitable electric circuitry or by hand.
•
This state must not be maintained in the long term!
•
Observe the lift during this test. If it does not decelerate, close the open brake circuit immediately.
Separate operation of the individual brakes
•
The only method by which the partial brakes can be released separately is through electrical control.
The
brakes can be activated/deactivated quickly using individual control buttons.
Monitoring the brakes
•
Check the brake monitoring switches individually. No car travel must be permitted if a microswitch signal is missing or
a wrong signal operates.
