AFRISO EMA AB
• Kilvägen 2, 232 37 Arlöv • Sweden • Phone +46-(0)40-92 20 50 • [email protected] • www.afriso.se
4
WGA 01
Oil- petrol- grease alarm type ema signal WGA 01
Installation EMA Signal WGA 01
Common information
Installation is only permitted by authorised
and competent personnel. The WGA 01 unit
is designed for wall mounting. The unit must
not be mounted in an EX zone.
All regulations and instructions for the
installation and maintenance of EX certified
equipment must be observed (EN60079-14,
EN60079-17 CENELEC).
This manual is the basis for certification of
explosion protection at level alarm WGA 01
according to certificate SP04ATEX3620X
and ES4 detector type according to certifi-
cate SP03ATEX3609X. It is not the basis for
certification of other products mentioned in
the manual. Specific connection examples
are not covered by certification according
to SP04ATEX3620X and SP03ATEX3609X.
Mounting
The protection class is IP 65.
Use 4 screws to mount the unit directly on
a wall.
Connections
The cable should be mechanically protected.
lf sensor cables need to be extended, scree-
ned cable (2 x 1,5 mm2) should be used,
Maximum length 200 m for each sensor.
The intrinsically safe circuit is not allowed
to be earthed.
Connections are made in accordance with
the connection notation shown below. The
power supply is connected to connector block
K1. The capacitance sensor probe type ES4
is connected to block P1 and the thermistor
sensor probe R6 (when used) is connected to
block P2. The WGA 01 unit has two voltage-
free relay contacts, R1 is the output for the
oil surface alarm provided by capacitance
probe type ES4 and R2 is the output for the
high level liquid alarm provided by thermistor
probe type R6.
230V power supply
L = Brown
N = Blue
Earth = Yellow/Green
Cap.probe
1 = Black (1)
2 = Black (2)
Thermistor probe
1 = Black (1)
2 = Black (2)
Cable connections for sensing
probes and power supply:
