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G900X/G950 Installation and Maintenance Manual – G900X/G950 Installation Overview
Page 1-9
190-00719-00
Revision D
1.3.5.1 GDU 1040 Cooling Requirements
External cooling of the GDU 1040 is required. A fan bracket (Garmin P/N 115-00973-00) is available to
mount an axial fan (Garmin recommended fan 013-00102-00, See Table 1-6) to the system rack. The
bracket is designed to secure a 2.36 x 2.36 inch (60 x 60 mm) axial fan. See Appendix E for dimensions
and assembly instructions. Alternate fans can be found in Table 1-7.
Table 1-6. GDU 1040 Cooling Fan (013-00102-00) Specifications
Characteristic Specification
Operating Voltage
22-31 VDC
Current
100 mA (nominal)
250 mA (maximum)
Air Flow (no load)
20 CFM (10 CFM @ .08” H
2
O)
Operating
Temperature
-20 to +55
°
C
Maximum
Operating Altitude
55,000 feet
Weight 0.25
lb
Figure 1-3. GDU 1040 Cooling Fan (013-00102-00) Drawing