Removing the SMB unit
Use these procedures to disconnect and remove the SMB unit.
Preparations before disconnecting the SMB unit
Note
Action
DANGER
Make sure that all supplies for electrical power and
hydraulic pressure are turned off.
1
ELECTROSTATIC DISCHARGE (ESD)
The unit is sensitive to ESD. Before handling the unit
please read the safety information in the section
unit is sensitive to ESD on page 49
2
xx1700001593
Check the leak flow value on the flow sensor (if not
already checked and noted).
Note the value to be able to compare it when repair
is completed.
3
CAUTION
Turn off the air pressure supply.
4
xx1700001806
Open the small cover on the SMB cover, disconnect
the battery cable and remove the battery.
5
xx1300000669
Remove the SMB cover.
CAUTION
Clean cover from metal residues before opening.
Metal residues can cause shortage on the boards
which can result in hazardous failures.
6
Continues on next page
Product manual - IRB 6790
241
3HAC063331-001 Revision: B
© Copyright 2019 - 2020 ABB. All rights reserved.
4 Repair
4.4.3 Replacing the SMB
Continued
Содержание IRB 6790
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