DAVIS Weather Monitor II (7440, 7440CS) User Manual

Page 10

Assembling the Station

Page 6

Weather Monitor II

3. Plug the other end of the power adapter into an appropriate power outlet or, prefera-

bly, into a computer-grade surge protector.

It is highly recommended that you plug the power adapter into a computer-grade surge
protector, especially in high-lightning areas.

Once power is applied, the console

should run through a brief self-test procedure. All of the display segments
appear, and the console beeps twice within 10 seconds (3 times within 20 seconds
if WeatherLink is installed) to indicate everything is working properly.

4. After the second beep (or the third beep with WeatherLink), the compass rose, the

barometric trend arrow and the time (reading 12:00 a.m.) appear on the display.

To Install the Battery Backup Power Supply

Before you install the backup battery, make sure AC power is connected and
the console is completely powered up. Installing the battery first can cause the
console to lock up.

Once the console is powered up, install the backup battery as shown below.

Note:

When the unit is operating on battery power, the digits on the right side of the display blink on and

off. The unit operates normally in all other respects.

ONNECTING

THE

ONSOLE

AND

UNCTION

The junction box connects the external sensors and the console. Information
from the sensors comes into the junction box. The junction box then relays
information to the console where it is processed and displayed.

To Connect the Console and Junction Box

1. Plug one end of the 8-foot (2.4-meter) long junction box cable into the jack labeled

JUNCTION BOX underneath the console.

2. Plug the other end of the cable into the jack marked CONSOLE on the junction box.

SSEMBLING

THE

NEMOMETER

To assemble the anemometer you need the following: anemometer arm (with
cable), anemometer base, wind cups, drip rings, allen wrench, 4-40 x 1 1/8-
inch pan head screw, #4 flat washer, #4 lock washer, and 4-40 hex nut.

Underside

of Console

Battery

Cover

Release

Tab

Standard

9-Volt Alkaline

Battery