Promise Technology VTrack M-Class M500p Manuál Strana 223

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Chapter 6: Maintenance
215
Replace Cooling Unit Fan – M500f/i/p
The blowers (scroll fans) in the cooling units are replaced as individual parts.
There are two fans in each cooling unit. No tools are required for this procedure.
To replace a fan, do the following:
1. Verify that the Fan LED is amber or red and note whether it is Fan 1 or 2
(above).
2. Press the release button and pull the handle downward as shown above.
Cautions
If the cooling unit you plan to remove contains the cache
backup battery, your system will be vulnerable to a power
failure. Temporarily set your cache policy to write-through
before starting this procedure. See “Logical Drive Settings” on
page 141 (WebPAM PROe) or “Logical Drive Settings and
Functions” on page 183. (CLU).
If power service has failed, do not remove the cooling unit if
the Controller’s Dirty Cache LED is flashing. See “Unsaved
Data in the Controller Cache” on page 289.
Fan 2 LEDFan 1 LED
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