SAFE 328
Avionics Cooling Fan
With Fault Detection
INSTALLATION INSTRUCTIONS
SANDIA aerospace
Albuquerque, New Mexico
www.sandia.aero
305467-00-IS
Rev. D 06/25-13
ECN 3987
1.0
I
NTRODUCTION
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 electrical installation
information. The installer should insure that the SAFE 328 is operating according to its intended function.
1.1
P
RODUCT
D
ESCRIPTION
The SAFE 328 is an avionics cooling fan that provides an operating indication. When the fan is normally
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
T
ECHNICAL
C
HARACTERISTICS
1.2.1
P
HYSICAL
C
HARACTERISTICS
Width
1.25”
Height
4.75”
Depth
5.58”
Weight
0.7 lb
Figure 1
Dimensional Drawing
1.2.2
O
PERATIONAL
C
HARACTERISTICS
Operating Voltage
22-31Vdc
Current
Operating
.400 Amps Nominal
Start-up
.550 Amps
Air Flow (All Ports)
20 CFM No Static Pressure (10CFM @ .08 H
2
O Static Pressure)
Operating Temp
-20 to +55
o
C
Max Operating Altitude
55,000 Feet
1.2.3
C
ERTIFICATION
FAA-PMA
PQ0894SW Diamond DA40
DO 160D
[F1]BAA[S2R2U(F,B2,M)]XXXXXXZBAZA[XX]M[XXXX][XX]XX
