Fujitsu M10 Series Installation Planning Manual page 42

CHAPTER 2 Installation Sites
(6) Maintenance outlets
The computer room requires maintenance outlets to power instruments for
maintaining the server system or to clean the floor. Maintenance outlets should be
provided on column or wall surfaces 5 to 7 m (16 to 23 ft) apart at a height of about 30
cm (12 in.) above the floor. An extension cord is required where the outlet spacing
exceeds 7 m (23 ft). Power leading to the outlets may be fed from a common general
power source.
(7) Dust
It is recommended to provide preventive action for generation of dust within the room
in which the equipment is installed, and for entering of dust from the windows and
entrances of the room. Most equipment applies mandatory cooling method. If dust
particles adhere over the vent to shut down the airflow, the temperature inside the
equipment ascends. Such conditions may cause equipment fault or system down. Dust
may become a cause of readout malfunction when dust covers over magnetic tapes,
optical disks, or such media. Planning of media warehousing is also important.
24 C120-H007-08EN