QDR InfiniBand Switch Platform User Manual
Rev 2.9
Mellanox Technologies
33
Figure 21: Two Power Inlets - Electric Caution Notifications
3.6.5 Extracting and Inserting the Power Supply Unit
With both power supplies installed in the redundant configuration, either PSU may be extracted
without bringing down the system.
Caution: After inserting a power cable and confirming the green system status
LED light is on; make sure that the Fan Status indicator shows green.
If the fan status indicator is not green then unplug the power connection and
check that the fan module is inserted properly and that the mating connector of
the fan unit is free of any dirt and/or obstacles.
Caution: When turning off the switch, make sure ALL LEDS are off to ensure
a powered down status.
Do not hot swap the power supply if your switch has only one power supply.
You must power down the system to replace the power supply unit when there
is only one PSU in the switch.
Make sure that the PSU that you are NOT replacing is showing all green, for
both the PSU and status indicators.
Power supply units have directional air flows similar to the fan module. The
Fan module airflow must coincide with the airflow of all of the PSUs. If the
PSU airflow direction is different from the fan module airflow direction the
system will shut down.
CAUTION
Risk of electric shock and energy
hazard. The two PSUs are indepen-
dent.
Disconnect all power supplies to
ensure a powered down state inside
of the switch platform.
ACHTUNG
Gafahr des elektrischen
Schocks. Entferrnen des
Netzsteckers elnes Netzteils
spannungsfrei. Um alle Einhi-
eten spannungsfrei zu machen
sind die Netzstecker aller
Netzteile zu entfernen
ATTENTION
Risque de choc et de danger
e’lectriques. Le de’branchment
d’une seule alimentation stabi-
lise’e ne de’branch uniquement
qu’un module “Alimentation Sta-
bilise’e”. Pour isoler com-
pletement le module en cause, Il
faut de’brancher toutes les alimen-
tations stabilise’es.
