Owner`s manual

2–12 DEChub 900 MultiSwitch Owner’s Manual
If you install any additional power supply modules to the DEChub 900 MultiSwitch
once it is operational, you may observe a momentary flicker in the power supply
LEDs each time a new power supply module is added. This is part of the normal
installation power up sequence when adding additional power supply modules. This
task does not cause a dc power interruption to the hub or the network modules.
You are now ready to install network modules into the chassis and make the neces-
sary network connections. Refer to each network module’s documentation for instal-
lation procedures.
Power supply modules can be removed while the hub is operational. To remove a
power supply module, perform the following two steps:
WARNING
!
Operational power supply modules are heavy, and may
be hot; use care when removing a power supply module.
1. Turn the locking mechanism 90 degrees to the right (counterclockwise) to
unlock the power supply.
2. Remove the power supply module from the DEChub 900 MultiSwitch.
Resetting the Power System
The following sections describe how to reset the power system.
Resetting a Non-Battery Backup Power System
If you have a non-battery backup power system and you need to reset the entire hub
and power system, cycle the power by removing the ac power cord.
Resetting a Battery Backup Power System
If you have a battery backup power system and you need to reset the entire hub and
power system, cycle the power by removing the ac power cord and pressing the bat-
tery backup disable switch located near the ac connector. When the battery backup
disable switch is pressed, the battery backup is disabled. With the ac power and bat-
tery removed, the system powers down and can only be restarted by plugging in the
ac power cord.