Chapter 1 Before Installation 3
3. A minimum of 2U (88.9 mm/3.5 inches) clearance must be allowed at both top
and bottom of the Netra ft1800 cabinet when mounted to allow adequate inlet
and exhaust ventilation.
4. The Netra ft 1800 system must not be mounted above any heat-generating sources
within the same frame unless a heat deflector is used to provide fresh inlet air at
ambient temperature.
5. To maintain adequate airflow, replace the environmental filtersevery six months
(contact your local support organization for further information). The
environmental filter replacementkit (X-Option No.X6952A) contains six PSU
filters and three base filters.