Universal Robots ur3, Original Instructions Manual

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All rights reserved 11 Servicemanual_UR3_en_rev3.1.2
3.1.3 Brake release
In an urgent situation the brake on Base, Shoulder and Elbow joints can be released without power
connected. It is not possible to release the brakes on Wrist 1, 2 and 3 manually.
IMPORTANT NOTICE:

Before releasing a brake it is extremely important to dismount any dangerous parts to avoid any
hazardous situations.

If releasing the brake on Base joint, Shoulder joint or Elbow joint, it is important to make proper
mechanical support prior to releasing the brake.

Always make sure personnel are in no risk when releasing the brake.

Do not move the joint more than necessary, Not more than about 160 degrees in order for the
robot to find its original physical position.
Procedure for releasing the joint

Shut down Controller.

Remove blue lid on joint.

Push brake pin down to release, joint can then be rotated.
On the Wrist 1, 2 and 3 it is not possible to release the brakes manually.
Brake on Base and Shoulder joints, Brake on Elbow joints

Make sure to mount blue lid properly on joint before turning on Controller.

Correct torque value for screws on blue lids are
0.4Nm