70
automatically after 30 minutes. The remaining watering time (RUN TIME)
is shown on the LCD display.
If the valve is opened manually and the manual watering time and a pro-
grammed watering time overlap, the programmed watering is suppressed.
11. Battery
11.1 Status Indicator
If the battery voltage falls below a
certain level
the
Batt
. indicator appears
8
. 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
man On / Off
key
1
. If the valve opens and the
Batt
. indicator
does not appear then the battery does not have to be changed.
11.2 Changing the Battery
If you exchange the
battery within 100 seconds,
the data you have
entered will be saved
(program saved).
When the battery is removed the
LCD display extinguishes and programs will not run while the battery is
being changed. When you have inserted a new battery, we recommend
that you check the data as described under
“Read / Change Program”.
If you do not insert a new battery within 100 seconds, or if the battery
power was already so low that the valve no longer opened, the water com-
puter is RESET (all program data is deleted). You must re-program your
water computer. The current date / time which was previously displayed
remain unchanged within the given time.
12. Notes on Safety and Operation
A
For safety reasons only a 9 V alkali-manganese battery (alkaline)
type IEC 6LR61 must be used.
.
The minimum water output to ensure that the Water Computer
functions correctly is 20 - 30 l / h.
For example, at least 10 x 2-litre Drip Heads are required to
control the Micro-Drip-System.
.
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
