Emerson AXP640-AC2-110VAC, Installation & Use Manual

Page: 57 / 190

Site Preparation
AXP640 Installation and Use (6806800M24E)
57
Free fall - 300mm (11.8 in) (packaged)
25mm (1 in) (unpackaged) per GR-
63-CORE
fully populated system
Noise ETSI ETS 300 753 (October 1997)
Telecommunication equipment rooms
(attended): 7.2 bel
Measurement of "declared A-weight sound
power level"
All values are applicable to normal operating
conditions (~23°C).
NEBS GR-63-CORE, Issue 3
Telecommunication equipment rooms
(attended): 78 dB
Measurement of "declared A-weight sound
power level"
All values are applicable to normal operating
conditions (~27°C).
-
Table 3-1 Environmental Conditions (continued)
Feature Operating Non-Operating (packed state)
z
The ambient temperature is defined as the air inlet temperature.
z
The AXP640 system regulates the fan speed based on the temperature sensors present
in the system. The fan speed is adjusted to the lowest speed which still keeps the
evaluated temperature readings below or at their respective "upper non-critical
threshold". Hence, the fan speed depends on the ambient temperature, blade design,
temperature threshold settings, and system configuration.