Artesyn Centellis 4100 Installation and Use (2015) - Manual (Page 132)

FRU Installation
Centellis 4100 Installation and Use (6806800D82E) 134
4. If you want to inform shelf management about the replacement, set the PEM
handle switch to the Open position. The blue LED blinks indicating that the power-
down process is on-going. Wait until the blue LED is illuminated permanently. If the
LED conitinues to blink, a possible reason may be that the upper layer software
rejects the PEM extraction request.
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.