IBM 4002-Y2A, Installation And User Manual

Page: 76 / 96

Table 25. Cooling system specifications for 4002-Y2B and 4002-Y4B switches (continued)
Total air flow 200 LFM
Operating noise ideal 51 dB-A
For the 4002-Y2A and 4002-Y4A models, the air flows from the front to the back of
the device. For the 4002-Y2C and 4002-Y4C models, the air flows from the back to
the front of the device.
Table 26. Cooling system specifications for 4002-Y2A, Y4A, Y2C, and Y4C model switches
Total cooling
capacity 180 watts
Total air flow 1152 LFM
Operating noise ideal 60 dB-A
Note: Operating noise is based on the ISO 7779 standard.
Figure 37 on page 51 shows the airflow for the 4002-Y2B and 4002-Y4B models.
Figure 38 on page 51 shows airflow for 4002-Y2A and 4002-Y4A devices. Figure 39
on page 52 shows the airflow for the 4002-Y2C and 4002-Y4C models.
Attention: For the 4002-Y2A, Y4A, Y2C, and Y4C devices, be sure that the airflow
direction of the power supply unit matches that of the installed fan tray. The
power supplies and fan trays are clearly labeled with an arrow with an “E”or "I",
as shown in Table 27.
Table 27. Power supply and fan tray labels for 4002-Y2A ,Y4A, Y2C, and Y4C devices
Devices
Label on required power
supply Label on required fan
tray
4002-Y2A and 4002-Y4A 4002-Y2A and Y4A power
supply airflow label
nety007
ATTENTION
AIRFLOW
Power supply and
fan FRU airflow
must be the
same to prevent
overheating.
E
4002-Y2A and Y4A fan
tray airflow label
nety008
E
AIRFLOW
4002-Y2C and 4002-Y4C 4002-Y2C and Y4C power
supply airflow label
Nety040
ATTENTION
AIRFLOW
Power supply and
fan FRU airflow
must be the
same to prevent
overheating.
4002-Y2C and Y4C fan
tray airflow label
AIRFLOW
nety039
50
Ethernet y-series Installation and User Guide: Installation and User Guide