4 Repair
4.5.2. Replacement of brake release unit
3HAC020993-001 Revision: G
278
©
Co
py
rig
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t 200
4-
200
8 ABB. All righ
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ed.
Removal, brake release unit
The procedure below details how to remove the brake release unit.
Action
Note/Illustration
1.
DANGER!
Turn off all electric power, hydraulic and
pneumatic pressure supplies to the robot!
For Foundry Prime robots: Do not turn off the
air pressure to motors and SMB.
2.
esd
WARNING!
The unit is sensitive to ESD, before handling
the unit please observe the safety information
in section
WARNING - The unit is sensitive to
3. Remove the
push button guard
from the SMB
cover.
Shown in the figure
.
The guard must be removed to ensure a
correct refitting of the brake release unit.
4. Open the
SMB cover
by unscrewing the
attachment screws.
Let the battery stay connected, to avoid the
need of synchronization of the robot!
Shown in the figure
!
5. Remove the complete brake release unit
(including brake release unit and bracket)
from the SMB recess, by removing its two
attachment screws.
6. Disconnect the connectors X8, X9 and X10
from the
brake release unit.
xx0200000129
•
A: Connector X8
•
B: Connector X9
•
C: Connector X10
•
D: Push buttons
Location of brake release unit is shown
in the figure
!
Continued
Continues on next page