Maintenance and repair
Kendrion INTORQ | BA 14.0223 | 04/2022
45
1. Check the brake functionality when the drive is running: The armature plate must be tightened and the
rotor must move without residual torque.
2. Measure the DC voltage at the brake.
– Compare the measured voltage to the voltage specified on the name plate. A deviation of up to
10% is permitted.
– When using bridge/half-wave rectifiers: After switching to one-way voltage, the measured DC volt-
age may drop to 45% of the voltage specified on the name plate.
8.3.4
Brake replacement
DANGER
Danger: rotating parts!
Switch off the voltage. The brake must be free of residual torque.
Your system should be mechanically immobilized in the event that it could start moving
when the brake is released.
Notice
To maintain the rated air gap, you must keep the rotor and stator combined together as deliv-
ered! No adjustment should be made to the air gap!
1. Remove the connection cables.
2. Loosen the screws evenly and then remove them.
3. Pay attention to the connection cable during this step! Remove the complete brake from the end
shield.
4. Pull the brake off the hub.
5. Check the hub's gear teeth.
6. Check the end shield's friction surface. Replace the friction surface on the end shield when there is
clearly visible scoring at the running surface. In case of strong scoring on the end shield, rework the
friction surface.
7. Mount the new brake and tighten the screws evenly to the prescribed tightening torque (refer to chap-
8. Re-connect the connection cables.
9. Put the brake back into operations.
10. If necessary, deactivate the mechanical shutdown of the system.
Notice
After replacing the brake, the original braking torque will not be reached until the run-in opera-
tion for the friction surfaces has been completed.
