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Work on the product
Testing the brake
TK Elevator
BA, TW45 | 6231003860 | 03/2023
7 Work on the product
7.1 Testing the brake
(At least once a year within the framework of central maintenance)
Test the braking deceleration at each brake circuit
WARNING
Elevator car movement by means of specific brake release.
The elevator car can move in an uncontrolled manner through the shaft.
Be prepared to brake at all times.
Regulate the travel speed of the elevator car by opening/closing the
brake manually if manual brake release is present.
The movement of the elevator car must be slow (0.3 m/s).
Immediately deactivate the live coils and check the brake.
1. Signs indicating that maintenance work is under way must be attached to
the elevator at all landing doors.
2. All doors must be properly and adequately locked.
3. Check that no persons are in the elevator car.
4. Position the elevator car at least two floors below the top landing.
5. For the single-circuit test with lever for the Mayr brake, ensure that the
brake magnet coil is connected with inrush/holding voltage (180 V / 90 V).
6. Test the brake circuit separately.
The brake of the brake circuit not being tested must remain open dur-
ing the entire test operation.
This is done by applying holding voltage to the magnet coil of the brake
circuit that is not involved.
Test the braking deceleration on one brake circuit in each case
1. Initiate normal travel (brake to be tested is opened).
2. After the rated speed has been reached, trigger an emergency stop (brake
to be tested closes).
3. Determine the deceleration value for the 1st brake circuit with the measur-
ing device.
4. Compare the measurement result with the default value.
5. Compare the measurement results with the default values.
6. Disconnect the permanent voltage supply of the continuously opened 2nd
brake circuit.
7. Connect the permanent voltage supply on the 1st brake circuit.
8. Connect the measuring device to the 2nd brake circuit.
9. Repeat the test operation on the 2nd brake circuit.
10. Re-establish the original state of the circuit (operation of both brakes sim-
ultaneously).
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