IBM eserver 630 6C4 Service Manual page 67

Specifications continued from the previous page.
Model 6C4 Noise Emissions
L
WAd
<L >
pA m
Install/Air Flow
Service
1. Inrush currents occur only at initial application of power, no inrush occurs during normal
power off-on cycle.
2. The upper limit of the dry bulb temperature must be derated 1 degree C per 137 m (450 ft.)
above 915 m (3000 ft.).
3. The upper limit of the wet bulb temperature must be derated 1 degree C per 274 m (900 ft. )
above 305 m (1000 ft.).
4. Levels are for a single system installed in a T00 32 EIA rack with the center of the unit
approximately 1500 mm (59 in.) off the floor.
Operating
6.1 bels
44 dBA
Maintenance of proper service clearance should allow proper
airflow.
When installing a rack unit, refer to "System Service
Clearances" on page 491 for the rack correct clearances.
Chapter 1. Reference Information
Idle
6.0 bels
43 dBA
47