Thermal Alarm - Silicon Graphics InfiniteStorage 6120 User Manual

4.2.5

Thermal Alarm

Symptom
1. Enclosure system
FAULT LED is amber.
2. An amber LED on
one or more power
cooling modules
3. Air temperature
exiting the PSU is
above 55°C.
!
Warning
0 0 7 - 5 5 3 3 - 0 0 1
Cause
If the air temperature
through the enclosure
exceeds a pre-set
threshold, a thermal
alarm will sound.
An enclosure will shut down when a critical temperature threshold is exceeded in
order to prevent permanent damage to the disk drives.
Action
1. Ensure that the local ambient environment
temperature is below the upper 40°C
specification.
2. Check the installation for any airflow
restrictions at the front and rear of the
enclosure. A minimum gap of 1" (25mm) at the
front and 2" (50mm) at the rear is
recommended.
3. Check for restrictions due to dust build-up.
Clean as appropriate.
4. Check for excessive re-circulation of heated
air from rear to the fron. Use in a fully enclosed
rack installation is not recommended.
5. If possible, shut down the enclosure and
investigate the problem before continuing.
Troubleshooting
67