Sandia Aerospace SAFE 128 - Manual

SAFE 128
Avionics Cooling Fan
With Fault Detection INSTALLATION INSTRUCTIONS
SANDIA aerospace
Albuquerque, New Mexico
www.sandia.aero
1.1 I NTRODUCTION
This sheet describes the installation of the SAFE 128 avionics cooling fan with fault detection output. It is
intended for use by FAA certified repair stations to install the SAFE 128 and includes both mechanical and
electrical installation information. The installer should insure that the SAFE 128 is operating according to its
intended function.
1.1 P
RODUCT
D
ESCRIPTION
The SAFE 128 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 128.
1.2 T ECHNICAL C HARACTERISTICS
1.2.1 P
HYSICAL
C
HARACTERISTICS
Width 2.36” Height 2.87”
Depth 1.44” (inc. pins) Weight 0.25 lb
1.2.2 O PERATIONAL C HARACTERISTICS
Operating Voltage 22-31Vdc
Current Operating .100 Amps Nominal
Start-up <.250 Amps
Air Flow (No Load) 20 CFM (10CFM @ .08” H 2 O)
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[S2R2(B2,M)]XXXXXXZBAZA[XX]M[XXXX][XX]XX
Figure 1
Dimensional Drawing
305468-00-IS
Rev B 09/26/06
DRN 287