Artesyn Centellis 4100 Installation and Use (2015) - Manual (Page 28)

Centellis 4100 Installation and Use (6806800D82E)
Safety Notes
30
Exchanging PEMs
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 serious injuries like burns or 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 Circuits or Personal Injury
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.
Short Circuit and Electric Shock
To avoid short circuits and electric shock, the power lugs must not be energized before
removing the screws. It is essential to ensure that the power lugs are not energized before
loosening the screws. Be careful with the used tools in order to prevent a short circuit.
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.
PEM Damage
Applying reversal power causes damage to the electrolytic capacitors of the filter. Therefore,
only switch on the breakers if no red light is visible.
Exchanging Blowers
System Overheating
Running the system with less than three blowers may damage the system. Do not operate the
system with less than three blowers.