1918
.To prevent water penetrating the battery compartment, the Water
Computer may only be installed in a perpendicular position with
the sleeve nut pointing upwards.
.Program the Water Computer with the tap turned off. In this way
you can avoid getting wet when trying out the manual On/ Off
function. You can remove the control unit from the housing to
program the Water Computer.
.Only use the Water Computer outdoors.
Warning! The Water Computer must not be used indoors.
.The Water Computer must be stored in a dry place away from frost
before the frosty season begins.
.The cover provided for the operating display must be used as
shown in Fig. B.To protect the operating display against the
weather the cover must be flipped over when you have finished
programming the computer.
Stick the programming help provided on the inside of the display
cover.
.At high temperatures (over 60 °C at the display) the LCD display
may extinguish. This does not affect the program in any way.
When the computer cools down the LCD display illuminates again.
.The max. temperature for the water flow is 40 °C.
.The minimum operating pressure is 1 bar, the maximum operating
pressure is 12 bar.
.Check the filter in the sleeve nut
J
regularly and clean if neces-
sary.
.Avoid tensile strain. Do not pull the hose connected to the Water
Computer.
.Only use clear fresh water.
14. Options
14.1 Anti-Theft Protection (Fig. D)
To protect your Water Computer against theft, the GARDENA anti-theft
protection
M
(1815-00 .791. 00) is available at GARDENA Service.
The bracket on the anti-theft protection is fitted onto the back of the unit.
Note that the screw included cannot be loosened once it has been
screwed in. The bracket can be used, for example, to attach a chain.
12. Battery
12.1 Status Indicator
If the battery voltage falls below a certain level the Batt. indicator appears
E
. It is possible to initiate watering manually even if the battery capacity is
too low (valve no longer opens), but programmed watering times, however,
are not initiated. Even if the battery capacity is too low to run a program,
if the valve is open it will be closed.
The battery voltage is tested during the opening pulse. In this way you
can test the capability of the battery at any time. To do this, simply
press the On/ Off key
4
. If the valve opens and the Batt. indicator does
not appear then the battery does not have to be changed.
12.2 Changing the Battery
If the battery is changed within 1 minute the data you have entered is
saved (program saved). When the battery is removed the display goes off
and programs cannot be run while the battery is being changed. When the
battery has been changed we recommend you check the data as described
in “Read/ Change Program”.
If it takes longer than a minute to change the battery or if the battery power
was already so low that there was no longer any opening pulse, the Water
Computer must be manually reset (all program data set to zero).To do this,
simultaneously press the ▲ and O.K. keys. All the symbols appear on the
LCD display. You must then reprogram the Water Computer. The current
date/ time which were previously displayed are saved.
13. Notes on Safety and Operation
A
For safety reasons only a 9 V alkali-manganese battery (alkaline)
type IEC 6LR61 must be used.
.The battery must be exchanged in time to prevent the Water Com-
puter failing due to a low battery when you are away for longer
periods of time. Make sure that the time the battery has been in
operation and the time you are planning to be away does not add
up to more than a year.
.The functional safety of the Water Computer depends on the capa-
bility of the battery. The Water Computer will only run for approx.
a year if the alkali-manganese battery has a nominal voltage of at
least 9 V. Check the battery before you buy it.