AFRISO OSA 3 User manual

Afriso Ema AB
Kilvägen 2 • SE-232 37 Arlöv
Sweden
T [phone]
F [phone]
www.afriso.se 2460
CONTENTS:
Functional description................ 2
Component parts ....................... 3
Spare parts................................. 5
Safety regulations....................... 6
Checklist..................................... 7
Installation .................................. 8
Commissioning......................... 11
Operation.................................. 14
Maintenance............................. 15
Troubleshooting ....................... 16
Technical data .......................... 18
Retain these instructions for
future use.
Edition 1.3 - 18-11-22
OSA 3
Level alarm for oil separator

OSA 3
Seperator alarm OSA 3 • Manual
AFRISO EMA AB • Kilvägen 2, 232 37 Arlöv • Sweden • Phone [phone] • [email protected] • www.afriso.se
2
Layer sensor
ES4
Electronic unit
OSA 3
Sludge sensor
ES8
Damming sensor
R6-S
OSA 3 is an Intrinsically Safe (Ex) grease
and oil separator alarm comprising of a
central alarm control unit that can accept
up to three independent alarm sensors
from three separate alarm points.
The IP65 enclosure housing the alarm con-
trol is designed to be mounted onto a wall
or a suitably flat surface.
Note: This central alarm unit must only
be mounted in a “safe-area” and never
installed in an area where there a risk of an
explosion.
• ES4 Capacitance type layer (Ex) sensor
for raising the alarm when the layer of oil
or grease exceeds the alarm value.
• ES8 Ultrasonic type sludge (Ex) sen-
sor for raising the alarm when sand
or particles in the separator exceed a
predefined level.
• R6-S Thermistor type (Ex) damming sen-
sor for indication of a high level.
OSA 3 is an Intrinsically Safe (Ex) central
alarm control unit approved for use with
the listed Ex sensors. The central alarm
control unit has two individually program-
mable voltage free relay outputs
(R1 and R2) that can be used to provide
remote alarm monitoring or activation of
secondary external alarms.
The central alarm control unit is program-
mable by navigation of the membrane key-
pad and displays the settings and alarms in
a text format.
OSA 3 is supplied boxed and in the follow-
ing variants:
1316 OSA 3 Level sensor
1318 OSA 3 Level and damming sensor
1319 OSA 3 Level, damming and sludge
sensor
13347 OSA 3 Level and sludge sensor
13345 OSA 3 Sludge sensor
Functional description

AFRISO EMA AB • Kilvägen 2, 232 37 Arlöv • Sweden • Phone [phone] • [email protected] • www.afriso.se 3
OSA 3
Seperator alarm OSA 3 • Manual
COMPONENT PARTS
OSA 3 level sensor
Art nr: 1316
Central unit
OSA 3, 1 x
Level sensor ES4, 1 x
Central unit
OSA 3, 1 x
Level unit ES4, 1 x
Damming sensor R6-S, 1 x
Central unit
OSA 3, 1 x
Level sensor ES4, 1 x
Damming sensor R6-S, 1 x
Sludge sensor ES8, 1 x
OSA 3 Level and damming alarm
Art no: 1318
OSA 3
Level, damming and sludge alarm
Art no: 1319

OSA 3
Seperator alarm OSA 3 • Manual
AFRISO EMA AB • Kilvägen 2, 232 37 Arlöv • Sweden • Phone [phone] • [email protected] • www.afriso.se
4
COMPONENT PARTS
OSA 3 Level and damming alarm
Art no: 13347
Central unit
OSA 3, 1 x
Level sensor ES4, 1 x
Sludge sensor ES8, 1 x
Central unit
OSA 3, 1 x
Sludge sensor ES8, 1 x
OSA 3 Slamgivare
Art nr: 13345
OPTIONS
Float
Float for level sensor ES4 where
the surface is not constant
Art no: 1236
SMS-ALARM
GSM dialer for alarm transmission.
Art nr: 1324

AFRISO EMA AB • Kilvägen 2, 232 37 Arlöv • Sweden • Phone [phone] • [email protected] • www.afriso.se 5
OSA 3
Seperator alarm OSA 3 • Manual
SPARE PARTS
INSTALLATION PARTS, SENSOR
Hook, grommet, cable tie, coupling sleeve
Art no: 1053
CENTRAL UNIT OSA 3
Electronic unit
Art nr: 1310
LEVEL SENSOR ES4, 5 meters
Capacitive sensor ES4. Emits alarm if thick
layer of oil/grease in separator
Art nr: 1147
LEVEL SENSOR ES4, 20 meters
Capacitive sensor ES4. Emits alarm if thick
layer of oil/grease in separator
Art nr: 1148
DAMMING SENSOR R6-S, 5 meters
Thermistor sensor. Emits alarm if high
level in separator.
Art nr: 990143
DAMMING SENSOR R6-S, 20 meters
Thermistor sensor. Emits alarm if high
level in separator.
Art nr: 990144
SLUDGE SENSOR ES8
Ultrasound sensor. Emits alarm if high
sludge level in separator.
Art nr: 1162

OSA 3
Seperator alarm OSA 3 • Manual
AFRISO EMA AB • Kilvägen 2, 232 37 Arlöv • Sweden • Phone [phone] • [email protected] • www.afriso.se
6
CAUSE/ERROR
ACTION
Note:
Critical warning, risk of injury
Warning: risk of injury or damage to
equipment
Attention required
SYMBOL DESCRIPTION
Read instructions before installation
Installation may only be carried out by
a qualified installation engineer
The intrinsically safe circuit must not
be earthed
Observe regulatory requirements
when connected in an EX-classified
area
SYMBOL DESCRIPTION
Regulations applicable to OSA 3
To note when there is a risk of
explosion.
Note:
Safety regulations:
Safety symbols
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AFRISO EMA AB • Kilvägen 2, 232 37 Arlöv • Sweden • Phone [phone] • [email protected] • www.afriso.se 7
OSA 3
Seperator alarm OSA 3 • Manual
Before installation
• Do you have the knowledge necessary
to carry out electrical installation? Note
relevant EX regulations and regula-
tory requirements: EN60079-14 and
EN60079-17 are particularly important.
• All pole switches should never be
installed so as to prevent the disconnec-
tion of the alarm function.
• Extension cables to sensor, 2 x 1.5 mm²
or 6 x 1.0 mm², max. 200 metres
• Remember to check regulations and
installation instructions for your specific
system
After installation
• Check the connection of the electronic
unit, cable area and use of poles
• Flat strip for cover fitted on electronic
unit, and cover closed
• Check installation position of sensor as
per the separator manufacturer’s recom-
mendations
• Make sure the separator is filled with
water as per the manufacturer’s recom-
mendation before carrying out a sensor
function control
• Switch on the power and check sensor
signals
• Carry out a function control as shown in
the commissioning instructions
Important information
Note that the unit’s intrinsically safe sensor
outputs on terminal block K3 (1,2,3,G) are
galvanically isolated from earth.
This user manual constitutes the basis
for certification governing protection in a
potentially explosive atmosphere for level
alarms of type OSA 3 in accordance with
certificate SP11 ATEX3644X. It does not
extend to certification of other products
mentioned in the user manual.
Specific connection examples contai-
ned in the user manual are not covered
by certification in accordance with SP11
ATEX3644X.
It is not permitted to repair the electronic
unit in the event of a fault. The unit must
either be replaced or sent to Afriso Ema AB
for fault diagnostics/examination.
The unit comes supplied with a cable
gland or a cable grommet. Only a cable of
suitable outer diameter may be used in ac-
cordance with the installation regulations.
Unused connections must be suitably
plugged.
Checklist:

OSA 3
Seperator alarm OSA 3 • Manual
AFRISO EMA AB • Kilvägen 2, 232 37 Arlöv • Sweden • Phone [phone] • [email protected] • www.afriso.se
8
Wiring the system using multi-core cables
Note: Read the installation instructions
Installation should only be carried
out by a suitably qualified Instal-
lation Engineer.
The intrinsically safe circuit must
not be earthed
When connecting more than 1 sensor it is
recommended that a junction box is used.
If a junction box is not used all cable joints
should be sealed using heat shrink tubing.
When connecting an ES8 sludge sensor an
external junction box should be used that
allows the shielded cable to be grounded
to earth.
When making connections between the
central control unit and a junction box this
should be interconnected using a multi-
core cable (6-core 1.0mm²) with connec-
tions made as shown in the following
diagram.
Terminals
K1: 230 VAC, 4 VA
K2: R1 Voltage free relay output (Symbols
on the circuit board are indicated in the
alarm condition)
K2: R2 Voltage free relay output (Symbols
on the circuit board are indicated in the
alarm condition)
K4: Terminal contact for membrane keypad
ribbon cable (not shown)
K3: 1-G Capacitive sensor ES4
K3: 2-G Thermal sensor R6-S
K3: 3-G Sludge sensor ES8
Recommended cable
Power supply: 3 x 1.5 mm²
Multi-core cable to junction box: 6 x 1 mm²
1 2 3 4 5 6
21
2
1
2
1
Shield
Installation
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AFRISO EMA AB • Kilvägen 2, 232 37 Arlöv • Sweden • Phone [phone] • [email protected] • www.afriso.se 9
OSA 3
Seperator alarm OSA 3 • Manual
Wiring the system using individual cables
When fitting an ultrasonic sludge
sensor a junction box should
always be used that allows the
equalisation of the earth potential
outside of the alarm control unit.
When connecting more than 1 sensor it is
recommended that a junction box is used.
If a junction box is not used all cable joints
should be sealed using heat shrink tubing.
When connecting an ES8 sludge sensor an
external junction box should be used that
allows the shielded cable to be grounded
to earth.
Terminals
K1: 230 VAC, 4 VA
K2: R1 Voltage free relay output (Symbols
on the circuit board are indicated in the
alarm condition)
K2: R2 Voltage free relay output (Symbols
on the circuit board are indicated in the
alarm condition)
K4: Terminal contact for membrane keypad
ribbon cable (not shown)
K3: 1-G Capacitive sensor ES4
K3: 2-G Thermal sensor R6-S
K3: 3-G Sludge sensor ES8
Recommended cable
Power supply: 3 x 1.5 mm²
Separate cable for sensor ES4 and
R6-S: 2 x 1 mm²
Separate cable for sensor ES8: 3 x 1 mm²
or 2 x 1 mm² with shielding

230 VAC
Layer sensor - ES4
Damming sensor - R6-S
Sludge sensor - ES8
Junction box
2 1 2 1
2 1
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OSA 3
Seperator alarm OSA 3 • Manual
AFRISO EMA AB • Kilvägen 2, 232 37 Arlöv • Sweden • Phone [phone] • [email protected] • www.afriso.se
10
The electronic must not be posi-
tioned in any area where there is
a risk of explosion
All cables laid within the hazard-
ous area zones should be
mechanically protected.
OSA 3 should be wall mounted in an
appropriate safe-area. It is always recom-
mended that the power supply should be
connected so as to prevent accidental
isolation of the system that may result in
separator alarm conditions being inactive
and missed. of fitting. The exact appear-
ance of separator types will vary from
manufacturer to manufacturer.
Check with your separator manufacturer for
more details.
The following recommendations apply:
Level sensor ES4 is fitted so that its
underside H* is fixed approx. 100-500 mm
below the static water level. The precise
installation depth H* below the static
water level is specified in the separator
manual. The underside of the level sensor
must be in water so as NOT to trigger an
alarm, see the illustration below.
Damming sensor R6-S is fitted approx.
100 mm above the top of the separator’s
intake pipe. The damming sensor must be
in air so as NOT to trigger an alarm, see
the illustration below.
Sludge sensor ES8 is fitted so that its
underside is located at the recommended
emptying height for sludge, specified
in the separator manual.
Assembly
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!
Inlet
Level sensor
Sludge
sensor
Damming sensor
Outlet
H*: the precise installation depth is specified in the
separator manual.