Replacing Components; Power Supply Unit - Cisco C880 M4 Operating Manual

Power Supply Unit

9.

Replacing Components

△
! CAUTION!
It is imperative that you read the chapter
page 9 in this manual before you carry out work on your storage
subsystem.
Information about relevant error messages concerning the components to be
replaced can be found here:
– section "Operation Panel" on page 22
–
section "Power Supply Unit (PSU)" on page 27
–
section "I/O Module" on page 25
–
chapter "Fault Clearing" on page 40
i
See "Hard Disk Drives" on page 28 for replacing hard disk drives.
Power Supply Unit
The power supply units are supplied with mains voltage via the supplied
connecting leads.
The power supply units can be connected to two different phases of the in-
house circuit in order to achieve phase redundancy (see
Connection" on page
The Storage Subsystem has two power supply units, which makes it possible
for a failed unit to be replaced while the system is running. Each power supply
unit contains fans.
△
! CAUTION!
When replacing a power supply unit, do not leave it removed for longer
than 5 minutes to prevent temperature rise.
44
Cisco C880 M4 Storage Subsystem Operating Manual for Server with E7-8800 v3 CPU
34).
Replacing Components
chapter "Important Notes" on
section "Power Supply