ABB FOX615 Installation & User Manual page 54

I N S T A L L A T I O N P R O C E D U R E S
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Please note:
A subsequent installation of the DUPF1 is not possible without service inter-
ruption and requires substantial installation effort.
The installation of the DUPF1 requires unlimited access to the bottom rear of
the FOX615 subrack. This access is normally only possible with unplugged
signal cables and if the subrack is removed from the rack.
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FOX615 Installation