Acer Network Device Altos R520 User's Manual | Page 86

Acer Network Card User's Manual - Network Device Altos R520.
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 3 System upgrade

76

Installing and removing a power 
supply module

The server has two power supply module bays on the rear panel that 
accept hot-plug power supply modules. The system ships out with only 
a single power supply module installed. You have the option to 
purchase an extra power supply module to provide the system with a 
redundant power source. A redundant power configuration enables a 
fully-configured system to continue running even if one power supply 
module fails.

WARNING! To reduce the risk of personal injury or damage to 
the equipment, the installation of power supply modules 
should be referred to individuals who are qualified to service 
server systems and are trained to deal with equipment capable 
of generating hazardous energy levels. 

WARNING! To reduce the risk of personal injury from hot 
surfaces, observe the thermal labels on each power supply 
module. You can also consider wearing protective gloves.

WARNING! To reduce the risk of personal injury from electric 
shock hazards, do not open the power supply modules. There 
are no serviceable parts inside the module.

Caution! Electrostatic discharge can damage electronic 
components. Make sure that you are properly grounded before 
handling a power supply module.

Caution! Due to chassis airflow disruption, a power supply bay 
should never be vacant for more than two minutes when the 
server is powered on. Exceeding five minutes might cause the 
system to exceed the maximum acceptable temperature and 
possibly damage the system components. 

Caution! The power supply is only hot-pluggable if you have a 
redundant system with two power supplies installed. If you 
only have one power supply installed, before removing or 
replacing the power supply, you must first take the server out 
of service, turn off all peripheral devices connected to the 
system, turn off the system by pressing the power button, and 
unplug the AC power cord from the system or wall outlet.

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