AFRISO EMA AB
• Kilvägen 2, 232 37 Arlöv • Sweden • Phone +46-(0)40-92 20 50 • [email protected] • www.afriso.se
9
WGA 01
Oil- petrol- grease alarm type ema signal WGA 01
Front buttons and LED indicators:
Start Up
Connect the powersupply to the WGA 01 unit.
The unit will automatically perform a check
ofthe sensor in puts and any alarms will be
given within 30 seconds.
Operating Information
Normal :
No sensor alarms given. Green LED’s
for ”surface” and ”high” will be illuminated.
Relays R1 and R2 will be energized.
Oil surface alarm :
With an oil or grease
surface alarm the red LED for ”surface” will
be illuminated and the internal buzzer sounds.
Relay R1 will be de-energized.
High level alarm :
When the liquid level in the
separator reaches the R6 thermistor probe
the red LED for ”high” will be illuminated and
the interna! buzzer sounds. Relay R2 will be
de-energized*.
Oil sensor alarm :
With a short circuit on the
surface sensor input the red ”surface” LED
flashes at a rate of 1 Hz (quick flash), with an
open circuit the flash rate is reduced to 1/3 Hz
(slow flash). In either case the interna! buzzer
sounds and relay R1 will be de-energized*.
High level alarm :
With a short circuit on the
high level sensor input the red ”high” LED
flashes at a rate of 1 Hz (quick flash), with an
open circuitthe flash rate is reduced to 1/3 Hz
(slow flash). In either case the interna! buzzer
sounds and relay R2 will be de-energized*.
(* = Fail safe operation)
Pressing the RESET pushbutton mutes the
interna I buzzer only, the operation of relay
R1 and R2 is unaffected. The buzzer will
sound aga in after approximately 20 ho urs if
the alarm condition has not been corrected.
Test function
The WGA 01 unit has a built-in test function
which as follows is used to test the alarm
functions, the relay outputs and the LED
indicators. The test is carried out as follows:
- Press the ”TEST” pushbutton and hold
for approximately 3 seconds. The following
sequence will commence and the TEST
pushbutton can be released -
For 5 seconds the ”surface alarm” will be gi-
ven. The red ”surface” LED will be illuminated
and relay R1 will be de-energised.
For the next 5 seconds the ”high level” alarm
will be given. The red ”high” LED will be il-
luminated and relay R2 will be de-energised
NOTE: The interna! buzzer will sound conti-
nuously du ring the 10 seconds of the test
sequence. For the next 5 seconds no alarms
will be given, the green LED’s will be illumina-
ted and relays R1 and R2 will be energised.
After this sequence the unit will revert auto-
matically to the normal operating condition.
User instructions for ema Signal type WGA 01 Alarm Unit
LED for
surface alarm
and error indication
LED for
high level alarm
and error indication
Rest button
Test button
