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Davis Instruments Rain Collector Heater Installation Manual page 11

Davis rain collector heater weather-accessories: install guide
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9. You may now plug the wall transformer into an outlet.
10. To insure that the heater is working, you may want to set the power unit to the "ON"
setting and then go to the Rain Collector to insure that the heater element is hot.
DO NOT TOUCH THE HEATER ELEMENT OR ANY METALLIC POR-
TION OF THE HEATER. You should be able to feel the heat at a short dis-
tance from the heater element.
U
R
SING THE
You may switch the Rain Collector Heater on and off from the power unit.
OFF
When the Rain Collector Heater is off, the indicator light on the power
unit is also off.
ON
When the Rain Collector Heater is on, it is capable of melting snow at a
rate of 1/4" (6 mm) of liquid precipitation per hour. It may not be able to
keep up with larger rates of snowfall. When the Rain Collector Heater is
set to "ON," the indicator light on the power unit is also on.
Note: The Rain Collector Heater warms only the inside of the Rain Collector and the cone. For some
weather conditions it may be necessary to add a lamp or heater beneath the unit to keep the drains
open.
The heater assembly includes a thermostat switch. If the temperature at the
thermostat reaches 110˚F (43˚C) the thermostat will interrupt power to the
heater element. When the temperature at the thermostat drops to about 85˚F
(30˚C) power flow to the heater element will be resumed.
You can turn the heater on when you expect the temperature to drop below
freezing, and turn it off again when you are no longer worried about freez-
ing conditions.
Using the Rain Collector Heater
C
AIN
OLLECTOR
Location of Thermostat
H
EATER
Page 11

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