DAVIS Vantage Pro ISS Fan-Aspirated Add., 2003 & later - Manual (Page 10)

Page 10 Addendum, Rev B
4. Gently place the mounting bracket on top of the radiation shield, being
careful to line up the three screw holes and also being very careful not to
move the top two (2) radiation shield plates.
Note: Solar ISS: Place the mounting bracket with the solar panel positioned opposite
the location of the junction board.
5. Hold the mounting bracket in place with one hand while you start the
three (3) long screws.
Tip: Be sure to start all three screws before you tighten any of them.
6. Place the rain collector base on top of the mounting bracket and fasten
using three screws. Do not over-tighten.
7. Install the rain collector cone on the base, making sure that nothing inside
the cone interfers with the tipping bucket operation.
Preparing the SIM for Installation
The ISS sensors are connected by cables to the Sensor Interface Module (SIM),
located inside the SIM housing. The SIM contains electronics that measure and
store weather values for transmission to the console via cable or radio. The SIM
housing protects the SIM from the elements and provides easy access to SIM
cable connections.
Connecting the Sensors
1. Take one of the square rubber grommets from the bottom of the SIM hous-
ing and run the cables for the UV and Solar Radiation sensors through it, if
included on your station.
2. Wireless ISS : Run the Solar Power cable through the grommet.
3. Take the other square rubber gromment and run the Rain Collector, Ane-
mometer, and Temp/Hum sensor cables through it.
4. Cabled ISS : run the console cable through the grommet.
5. Install the first grommet in the left slot in the SIM housing, and install the
second grommet in the right slot, adjusting the inside cable lengths as
needed for a tidy installation.
6. Refer to the ISS SIM Connections illustration and connect only the sensor
cables as shown. You will connect the power cables in the next procedure.
ISS Fan Rev B.fm Page 10 Thursday, November 14, 2002 4:29 PM