SMART Embedded Computing 6806800V18A, Инструкция по установке и эксплуатации

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AXP1440-C07 Operations
AXP1440-C07 Installation and Use (6806800V18A) 93
4.6.2 Cooling Budget
The shelf cooling is designed to operate with the following temperature rises across the
shelf. This allows cards with these dissipations to operate with commercial grade
components, 70

C ambient temperature typical.
The following guidelines can assist in determining the cause of the cooling failure. Also
refer to
Environmental Requirements on page 81
for important information regarding
ambient temperature requirements during servicing.
If a cooling failure occurs, the failure may be caused by a failed fan or possibly a clogged
filter. Check the filter first before replacing the FTM (see
Air Filter Maintenance on page 93
).
For further information of nonrecoverable temperature events, refer to the FRU Information
chapter in the
Centellis 4440/4620 Control via IPMI Programmer’s Reference.
4.6.3 IPMC Circuitry
Preprogrammed FRU and SDR information reside on the s and is accessible from the
SAM1620-D through the I
2
C bus. FRU information can be found in the
Centellis 4440/4620
Control via IPMI Programmer’s Reference
, listed in
Appendix A
.
4.7 Air Filter Maintenance
Maintenance includes cleaning, replacing, and properly storing the air filters. Air filters
should be cleaned every 90 days or sooner, depending on the conditions of the
environment. Environments vary in physical location and cleanliness, check your air filters
every week after you first install your system. In a dusty environment a filter may need
cleaning more often than a filter in a cleaner environment. Check the filters frequently until
you have a good idea of how often it needs cleaning. Based on your findings, establish a
regular cleaning schedule and keep a log to record the date of each filter cleaning or
replacement.
Table 4-2 Cooling Budget
Ambient Temperature Temperature Rise
25

C Delta T = 20

C
40

C Delta T = 15

C
55

C Delta T = 10

C