AP7500 Hardware Reference Guide
15
II.
Components
Circulation
System
Circulation System
The server’s air circulation system is comprised of five 3 inch (8 cm) fans
mounted on a metal fan module. The circulation system cools the hard disk
drives by bringing fresh air in from the front and forcing the hot air out
through the back. It is important to keep the air surrounding the hard disk
drives below 122˚F (50˚C) to prevent hard disk failures.
Fan Replacement
The fan module can be removed by pulling the handle and inserted by push-
ing. The handle must be in the out position to insert the fan module. The
individual fans are secured by two clips and two hooks. To release these clips,
use a screw driver to push these clips in and then slide the fan out. If an
individual fan fails, remove the fan and send it back to the vendor for replace-
ment. If all five fans fail, it may be that the fan control board needs replacing,
remove the control board and send it back to your vendor for replacement.
Removing or inserting the fan module
Release Handle
Fan Module
Air Inlet Vents (along
full length of door)
II. System Components
Fan module
Release Handle
Fan 1
Fan 2
Fan 3
Fan 4
Fan 5
Control Board
Fan removal (module’s reverse side)
When replacing fans, be sure that
the fan rotations are in the same
direction. Use the manufacturer’s
sticker on one side of the fan as a
reference as to the correct side.
Air flows from the front of the
server to the rear.