Artesyn Centellis 4100 Installation and Use (2015) - Manual (Page 125)

FRU Installation
Centellis 4100 Installation and Use (6806800D82E) 127
To ensure power supply of the system you have to connect
 one of PEM A1 or B1, and one of PEM A2 and B2
 or all four PEMs to external power supplies.
Damage of Circuits
Electrostatic discharge and incorrect blade installation and removal can damage circuits or
shorten their life.
Before touching the blade or electronic components, make sure that you are working in an
ESD-safe environment.
Personal Injury through Electric Shock and Burning
Touching the PEM power input terminals with metallic objects on your hands, wrists, or
hanging from your neck may lead to amputations. Do not wear any metallic attire or
commodity on your hands, wrists, or hanging from your neck when working at the power
input terminals or power input cables. Be extremely careful when you use electrically
conductive tools near the PEMs.
Short Circuit and Personal Injury through Electrical Shock
Ensure that the power feeds you plan to remove or attach are powered off and cannot be
switched on while you are working.
Ensure that all power input lines are not energized.
Personal Injury
PEMs will get hot. Touching a hot PEM can cause injuries. Let the PEM cool down before
pulling it out with bare hands.