
SecurStor 16i Installation and Hardware Reference Manual
5.5Replacing a Failed PSU Module
5.5.1Notes on PSU Module Maintenance
Two (1+1) redundant PSU modules: The subsystem comes with two fully redundant,
PSU canister: Each PSU module is housed in a robust steel canister, with the power supply converter unit in the front and two
Printed text on PSU handle: Before you insert a new PSU, make sure that the printed text on the PSU handle matches the printed text on a partner PSU.
Figure 5-8: Printed Text on PSU Handle
Immediate replacement: When a PSU fails, it should ideally be replaced immediately. Do not remove the PSU module unless a replacement is readily available. Removing a PSU without a replacement will cause severe disruptions to the internal airflow and the subsystem will overheat, possibly causing irreparable damage to some of the subsystem components.
WARNING!
Although the subsystem can operate using a single PSU module, it is not advisable to run the EMD subsystem with a single PSU module for an extended period of time.