DAVIS 6252AU - Page 36

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Maintaining the Radiation Shield
The outer plating of the radiation shield should be cleaned when there is excessive
dirt and build-up on the plating. Wipe the outer edge of each ring with a damp cloth.
CAUTION: Spraying down or using water excessively to clean the radiation shield can damage
the sensitive sensors or alter the data and readings the sensor suite is transmitting.
Check the radiation shield for debris or insect nests several times a year and clean
when necessary. A buildup of material inside the shield reduces its effectiveness and
may cause inaccurate temperature and humidity readings.
At least once a year, thoroughly clean your radiation shield. Follow the instructions
below for the correct version of your sensor suite’s radiation shield.
Tip: You will not need to remove the rain collector base from the pole or post.
Maintaining a Standard (Passive) Radiation Shield
1. Remove the rain collector cone.
2. Open the transmitter shelter and
unplug and remove the temp-humidity
cable.
3. While supporting the radiation shield
from the bottom, use a Phillips-head
screwdriver, to loosen the three 4''
(~100mm) screws holding the
radiation shield plates together.
4. Taking care to maintain the order in
which the five plates are assembled,
separate the plates as shown and
remove all debris from inside the
shield.
5. Inspect and clean any dust or debris
from the temperature/humidity sensor
inside the shield.
6. Reassemble the plates in the same
order in which they were
disassembled, and fasten them together
using a Phillips-head screwdriver to
tighten the 4" screws.
7. Plug the sensor cable in, then replace
the foam insert snugly. Check other sensor cables to make sure they are plugged
in tightly. If you disconnected the door’s solar panel cable, plug it back in.
Note: For some models the order in which the five radiation shield plates are assembled may
be slightly different than the order shown in the figure. For this reason, ensure that you
always reassemble the plates in the same order in which they were disassembled.
4"
Screw
(3)
Plates
Rain Collector Base
Temp/Humidity
Sensor Plate
Lock
Washer
Flat
Washer