Sandia Aerospace SAFE 328 - Manual (Page 4)

1.0 Introduction
This sheet describes the installation of the SAFE 328 Blower with fault detection output. It is intended
for use by FAA certified repair stations to install the SAFE 328 and includes both mechanical and elec-
trical installation information. The installer should insure that the SAFE 328 is operating according to
its intended function.
1.1 Product Description
The SAFE 328 is an avionics cooling fan that provides an operating indication. When the fan is normal-
ly operating, this output is at low impedance. The output goes to high impedance whenever the RPM of
the motor drops below a preset threshold, signaling the connected avionics of the reduction in cooling
from the SAFE 328.
1.2 Technical Characteristics
1.2.1 Physical Characteristics
Width 1.25” Height 4.75”
Figure 1-1
Dimensions for Serial Numbers 101 - 9999 and 20000 and Up
Figure 1-2
Dimensions Seraial Numbers 10001 - 19999
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305467-00-IS