Davis Instruments Daytime Fan Aspirated Radiation Shield Kit, 7747 Installation Manual
Daytime Fan-Aspirated Radiation
Shield Kit Installation Manual
For Vantage Pro2™ & Vantage Pro2 Plus™ St ations
Introduction
The instructions describe how to upgrade a non-aspirated V antage Pro2™
radiation shield to a Daytime Fan-Aspirated Radiation Shield. The upgrade
™
kit can be installed on any Vantage Pro2
grated Sensor Suite (ISS) equipped with a round-plate non-aspirated, radiation shield. The Daytime Fan-Aspirated Radiation Shield Kit can only be
installed on round-plate non-aspirated radiation shields.
Components
The upgrade kit includes the following components:
Closed Cap Plate
or Vantage Pro2 Plus™ Inte-
Fan Plate
Open Cap Plate
SIM Cover
Open Plate
Daytime Fan Kit Components
1
Installing the Daytime Fan Kit
The kit also includes the following hardware:
#8-32 x 3-1/4" Screws
(3)
#8 Split-Lock Washers (6)
#8-32 x 1/2" Screws
(3)
Threaded Spacers
(3)
12" Cable Ties (2)
Daytime Fan Kit Hardware
#8 Flat Washers (6)
Tools Needed
You may need some or all of the following tools and other items to complete the upgrade:
• A medium Phillips-Head screwdriver
• A medium slot-tip screwdriver
• Other tools as required to remove and re-mount the ISS
• Cabled ISS Only: Wire cutters
• Wireless ISS Only: CR-123A 3-volt lithium battery (optional)
Note: If you are upgrading an ISS that has been in service for a year or more, you should
consider changing the ISS battery on the SIM board during the upgrade.
Installing the Daytime Fan Kit
Installation Overview
Installing the Daytime Fan Kit is not very complicated and should take
only 30 to 60 minutes to complete.
These are the steps to install the Daytime Fan components:
1. Put the console into Setup Mode.
2. Take the ISS down from its installed position.
3. Disassemble the standard radiation shield..
4. Assemble the lower section of the fan-aspirated shield.
5. Install the fan unit.
6. Assemble the upper section of the fan-aspirated shield.
7. Re-Install the ISS.
8. Take the console out of Setup Mode.
2
Installing the Daytime Fan Kit
Put Console in Setup Mode
1. At your Vantage Pro2 console, press and hold DONE and then press the
down arrow ( - ) to put the console in Setup Mode. This prevents the
reception of erroneous data while you are removing the ISS.
Note: If the console acquires erroneous data during the upgrade, refer to “Take the Console
Out of Setup Mode” for instructions on clearing data. Additional information on clearing and setting console data can be found in the Vantage Pro2 Console Manual.
Take Down the ISS
Please work on your Vantage Pro2 ISS in a safe place. We strongly recommend that you take the ISS down from its sited location before beginning
the upgrade. If you are installing the Daytime Fan Kit on an ISS that has
already been placed into service, you will need to take down the ISS from
its sited location and move it to a convenient and safe place to perform the
installation.
To dissassemble the ISS:
1. Locate the Sensor
Interface Module (SIM)
housing cover on the
side of ISS and open it..
2. Disconnect the Solar
Lift off cover,
unplug solar power
connector
Panel wire on the SIM
cover from the SIM
board by pulling the
Solar Panel connector
3. Pull the foam insert out
of the cable access port
in between the cables
and set the foam insert
aside.
4. Disconnect the anemometer cable from the
sensor connector
Dettaching the SIM Cover
labeled WIND and, if
you are using a cabled model, disconnect the console cable from the
SIM.
5. You can now remove the ISS from its mounted position. Move it to a
safe place to install the kit components.
Disassemble the Standard Radiation Shield
Note: We recommend using a workbench or table to perform the following procedures.
1. Open and remove the SIM cover if you have not done so already.
3
2. Disconnect the TEMP/HUM cable from the
SIM and slide the cable out of the cable access
port.
3. Remove the rain collector cone from the ISS
base by rotating the cone counter-clockwise.
When the cone’s latches line up with openings
in the base, you can lift the cone off. The cone
fits in the base tightly and may require extra
pressure to remove the first few times.
Steady the ISS base between your knees when
removing the cone.
Installing the Daytime Fan Kit
Twist to Open
Remove the Rain Collector
Cone
4
Installing the Daytime Fan Kit
4. Remove the three 8-32 x 4'' screws holding the radiation shield plates
together.
4" Screw
(3)
Lock
Washer
Flat
Washer
Rain Collector Base
Plates
Temp/Humidity
Sensor
Standard Radiation Shield Assembly Diagram
5
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