Davis Instruments Fan-Aspirated Radiation Shield Installation Instructions Manual page 6

Fan-Aspirated Shield Maintenance
3. Unscrew the three threaded spacers
holding the solar bracket and radia-
tion shield together.
4. Remove the three screws from the
bottom of the radiation shielding and
separate the shield stack.
Interior Maintenance
Once the shield has been disassembled,
do the following to clean and maintain
the interior of the shield:
• Remove all debris from inside the
shield and wipe the interior surfaces
clean.
• Expose the solar panel to the sun and
check that the fan rotates.
• Replace the fan motor and batteries
as needed (see instructions below).
Once interior maintenance is completed,
reassemble the shield and remount the
ISS.
Replacing Fan Motor and
Batteries
1. Unplug the old motor and lift it from
the Radiation Shield.
2. Install the new motor/fan assembly and
plug its cable into the junction board.
6
Threaded
Spacer
Lock Washer
Flat Washer
Solar Panel
Bracket
Closed Cap Plate
Open Cap Plate
(hole in center)
Stand-offs
Fan Plate
Plates
Flat Washer
Lock Washer
5-1/2" Screw
Fan Unit
Motor Connector
Temp/Hum
Sensor Cable
Channel
Junction Board
Solar Panel Cable
(Connects to Solar Panel,
Panel not shown)
Power Cable
Temp/Humidity
Cable
Fan Plate