AFRISO
EMA
AB
• Kilvägen 2, SE-232 37 Arlöv • Phone +46-(0)40-92 20 50 • [email protected] • www.afriso.se4
VA-ALERT
Full Tank Alarm for sewage tanks • Installation instructions
Subject to design modifications..
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1 2 3 4 5 6 7
NO C NC
Ev. 12 V matning *
Givarkabel
* Används endast om extern
strömkälla skall anändas,
batterier skall då ej monteras.
Sensor Cable
Opt. 12v Power
* Used only if the external power
source to be used, batteries
should then not be mounted.
Activating the alarm unit:
• Install the alarm unit in a location where
it can be easily observed and checked.
The sensor cable is connected to 3
and 4 on the terminal block. If an exter-
nal power supply is used (optional),
use connector 1 and 2 on the terminal
block. Connection of external equipment
can be made via the voltage-free relay
output contacts at 5,6,7.
• After sensors and other connections are
complete, put 3 x AA batteries of alkaline
type in the battery holder (calculated
life-span about 3.5 years).
Back side of the front to the VA ALERT Wiring on terminal
When using external power no
batteries should be used. (Mains / batt-
ery eliminator 12 VAC or 12 VDC is
optional.
• Insert the batteries into the holder and
verify that the polarization is correct (see
symbols in the battery holder). The
unit will now give a quick flash about
every two seconds. If this occurs, the
unit is in operation.
• If flash is not delivered, verify polariza-
tion or replace the batteries.
Functional testing of sensors
and alarm device:
To test the alarm: Immerse the sensor
in water (do not use rainwater or battery
water, as this is to clean and has poor
conductivity). Alternatively, the sensor elec-
trodes could be short circuited with a cable
stub or a cable clamp. Once this is done,
the unit reacts after about 4 seconds, the
buzzer will sound and the red LED flashes
every two seconds. The relay contacts will
switch. By pressing the button, the sound
is muted. If this occurs, the alarm is pro-
perly functioning. If this does not happen,
check the Troubleshooting section.
