Warning - The Brake Release Buttons May Be Jammed After Service Work - ABB DressPack IRB 6620LX Product Manual

1.4.3 WARNING - The brake release buttons may be jammed after service work

1.4.3 WARNING - The brake release buttons may be jammed after service work
Description
The brake release unit has push-buttons for the brake release of each axis motor.
When service work is performed inside the SMB recess that includes removal and
refitting of the brake release unit, the brake release buttons may be jammed after
refitting.
If the power is turned on while a brake release button is jammed in depressed
position, the affected motor brake is released! This may cause serious personal
injuries and damage to the robot.
Elimination
To eliminate the danger after service work has been performed inside the SMB
recess, follow the procedure below.
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Product manual - DressPack/SpotPack IRB 6620LX
3HAC055327-001 Revision: A
DANGER
Action
Make sure the power is turned off.
Remove the push-button guard, if necessary.
Verify that the push-buttons of the brake release unit are working by pressing them
down, one by one.
Make sure none of the buttons are jammed in the tube.
If a button gets jammed in the depressed position, the alignment of the brake release
unit must be adjusted so that the buttons can move freely in their tubes!
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