Promise Technology VTrak 15110 - Manual (Page 205)

Chapter 6: Maintenance
197
Replace Cooling Unit Fan
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.
Caution
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 page 166.
Fan 2 LED Fan 1 LED