DAVIS Weather Monitor II Troubleshooting Guide download pdf (Page 9)

Powering the Weather Monitor II

Weather Monitor II Page 5

2. A

SSEMBLING

THE

TATION

The Weather Monitor II is a precision instrument, designed to give extremely

accurate readings. As with any precision instrument, care must be used during

assembly. These instructions detail how to assemble the stations with a mini-

mum of time and effort.

OWERING

THE

EATHER

ONITOR

The Weather Monitor II is powered by 9- to 12-volt DC (direct current). In

North America, the power adapter included with your unit converts 120-volt,

60-Hz AC (alternating current) to 9-volt DC, allowing you to run the unit on

ordinary household current. You may also run the Weather Monitor II on the

12-volt DC power supplied by a car, boat, or RV battery by using the optional

Car/Boat/RV Lighter Cord.

If you are outside North America and in a location where the power supply is

not equivalent to the North American standard (120-volt, 60-Hz), check to see if

your local dealer has supplied a power adapter that is appropriate for your

power supply before you connect the power adapter to the console. If not, you

must use a power converter/transformer or the appropriate power adapter (9-

volt, 2.5-mm female plug).

In any case, we recommend that you also install a 9-volt alkaline battery as a

backup power supply. In the event of a power outage, the battery will power

the station. Not only will this prevent the loss of stored data in the console, but

will also allow you to continue observing weather conditions during the power

outage.

New alkaline batteries will power the Weather Monitor II for 24 - 48 hours. For

maximum security, keep the battery backup fresh. You should replace batteries

any time the unit has operated on battery power for more than 18 hours. To

prevent loss of data when replacing batteries, make sure the unit is receiving

power from the adapter before changing batteries.

Whenever you repower the

unit, press and hold down CLEAR for approximately 12 seconds to clear

erroneous highs and lows.

Note:

We do not recommend the use of Ni-Cad batteries. Ni-Cad batteries carry less power than alkaline

batteries, and they will not be recharged by the station. In the event of a power outage, Ni-Cad bat-

teries will be able to power the station for a shorter period of time than alkaline batteries will.

To Connect the Power Adapter to the Console

1. Remove the mounting base from the console.

Push down on the large tab behind the display until it will easily slide out from

the notch. Then lift the mounting base so the two smaller tabs behind the key-

board slide free. Place the mounting base aside until you mount the console (see

“Displaying the Console” on page 14).

2. Slide the power adapter plug into the jack marked POWER underneath the console.

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DAVIS Weather Monitor II Troubleshooting Guide Page 9

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