Sandia Aerospace SAFE 128 User Manual

Safe 128

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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

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