Mess-, Regel- und
Überwachungsgeräte
für Haustechnik,
Industrie und Umweltschutz
Lindenstraße 20
74363 Güglingen
Telefon +49 7135-102-0
Service +49 7135-102-211
Telefax +49 7135-102-147
[email protected]
www.afriso.de
Operating Instructions
Alarm unit for oil and petrol separators
WGA 01
WGA 01
Probe WGA-R6
Probe WGA-ES4
# 53410
# 53419
# 53418
Layer level alarm/overflow alarm



Read instructions before using device!
Observe all safety information!
Keep instructions for future use!
09.2012 1
854.001.0397
0123
Contents
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
2
This instruction manual............................................................................................ 3
1.1
Precautions .................................................................................................. 3
1.2
Explanation of symbols and typeface .......................................................... 3
Safety....................................................................................................................... 4
2.1
Intended use................................................................................................. 4
2.2
Predictable incorrect application .................................................................. 4
2.3
Safe handling ............................................................................................... 4
2.4
Staff qualification .......................................................................................... 4
2.5
Modifications to the product ......................................................................... 4
2.6
Usage of spare parts and accessories ......................................................... 5
2.7
Liability information ...................................................................................... 5
Product description .................................................................................................. 5
3.1
Function........................................................................................................ 6
3.2
Front buttons and LED indicators................................................................. 6
Specifications .......................................................................................................... 6
Transportation and storage ..................................................................................... 8
Mounting and commissioning .................................................................................. 8
6.1
Electrical connection .................................................................................... 9
6.2
Commission the device .............................................................................. 10
6.3
Test ............................................................................................................ 11
Operation ............................................................................................................... 11
Maintenance .......................................................................................................... 12
Shutting down and disposal .................................................................................. 12
Spare parts and accessories ................................................................................. 13
Warranty ................................................................................................................ 13
Copyright ............................................................................................................... 13
Customer satisfaction ............................................................................................ 13
Addresses .............................................................................................................. 13
Appendix ................................................................................................................ 14
15.1 Approval documents evaluation unit .......................................................... 14
15.2 Approval documents WGA-ES4 capacitance probe .................................. 15
15.3 Approval documents WGA-R6 PTC thermistor probe ............................... 15
15.4 Declaration of conformity ........................................................................... 16
WGA 01
This instruction manual
1
This instruction manual
This instruction manual is part of the product.
 Read this manual before using the product.
 Keep this manual during the entire service life of the product
and always have it readily available for reference.
 Always hand this manual over to future owners or users of the
product.
1.1
Precautions
WARNING TERM Type and source of the danger is shown here.

Precautions to take in order to avoid the danger are shown
here.
There are three different levels of warnings:
1.2
WGA 01
Warning term
Meaning
DANGER
Immediately imminent danger!
Failure to observe the information will result in
death or serious injuries.
WARNING
Possibly imminent danger!
Failure to observe the information may result in
death or serious injuries.
CAUTION
Dangerous situation!
Failure to observe the information may result in
minor or serious injuries as well as damage to
property.
Explanation of symbols and typeface
Symbol
Meaning

Prerequisite for an activity

Activity consisting of a single step
1.
Activity consisting of several steps

Result of an activity
•
Bulleted list
Text
Indication on a display
Highlighting
Highlighting
3
Safety
2
2.1
Safety
Intended use
The WGA 01 alarm unit consists of a evaluation unit, a capacitance
probe (WGA-ES4) and optional a PTC thermistor probe (WGA-R6).
With the WGA-ES4 capacitance probe the WGA 01 alarm unit is exclusively suitable for detecting the layer level in an oil/grease separator. With the additional WGA-R6 PTC thermistor probe the WGA 01
alarm unit is exclusively suitable for detecting the maximum level
(overflow alarm).
Any use other than the use explicitly permitted in this instruction
manual is not permitted.
2.2
Predictable incorrect application
The WGA 01 alarm unit must never be used in the following cases:
•
Using the evaluation unit in hazardous areas (ex)
If the device is operated in hazardous areas, sparks may cause
deflagrations, fires or explosions
2.3
Safe handling
The WGA 01 alarm unit represents state-of-the-art technology and is
made according to the pertinent safety regulations. Each device is
subjected to a function and safety test prior to shipping.
 Operate the WGA 01 alarm unit only when it is in perfect condition. Always observe the operating instructions, all pertinent local and national directives and guidelines as well as the applicable safety regulations and directives concerning the prevention of accidents.
2.4
Staff qualification
The product may only be mounted, commissioned, operated, maintained, shut down and disposed of by qualified, specially trained
staff.
Electrical work may only be performed by trained electricians qualified in accordance with the local and national directives.
2.5
Modifications to the product
Changes or modifications made to the product by unauthorised persons may lead to malfunctions and are prohibited for safety reasons.
4
WGA 01
Product description
2.6
Usage of spare parts and accessories
Usage of unsuitable spare parts and accessories may cause damage to the product.
 Use only genuine spare parts and accessories of the manufacturer (refer to chapter 10, page 13).
2.7
Liability information
The manufacturer shall not be liable for direct or consequential damage resulting from failure to observe the technical instructions, guidelines and recommendations.
The manufacturer and the sales company shall not be liable for costs
or damages incurred by the user or by third parties in the usage or
application of this device, in particular in case of improper use of the
device, misuse or malfunction of the connection, malfunction of the
device or of connected devices. The manufacturer or the sales company shall not be liable for damages resulting from any use other
than the use explicitly permitted in this instruction manual.
The manufacturer shall not be liable for misprints.
3
Product description
Bild 1: Evaluation unit
Bild 2: WGA-ES4
capacitance
probe
Bild 3: WGA-R6
PTC thermistor
probe
The evaluation unit and the WGA-ES4 capacitance probe are included in delivery. Optional the WGA-RG PTC thermistor probe is additionally included in delivery.
WGA 01
5
Specifications
3.1
Function
The sensing probe circuits are intrinsically safe.
The evaluation unit has a selectable jumper link on the printed circuit
board (only accessible with the front cover removed) which provides
selection for the number of sensing probes.It has two positions:
•
1 = WGA-ES4 capacitance probe only
•
2 = WGA-ES4 capacitance probe and WGA-R6 PTC thermistor
probe
On start-up the control evaluation unit automatically checks to determine if one or two sensors are connected. With the jumper link in
position 1 the evaluation unit will not give a sensor failure alarm
when the WGA-R6 PTC thermistor probe is omitted.
3.2
Front buttons and LED indicators
1
LED for layer
level alarm and
failure alarm
2
LED for overflow
alarm and failure
alarm
3
Test button
4
Reset button
Bild 4: Front buttons and LED indicators of the evaluation unit
4
Specifications
Tabelle 1: Specifications evaluation unit
Parameter
Value
General specifications
Intrinsically safe
II (1) G [EEx ia] II B
Sensor output galvanically
isolated from earth.
Intrinsically parameters
C0 = 0.60 µF; L0 = 2.0 mH
Sensor output
I0 = 170 mA; U0 = 24.9 V; P0 = 1.1 W
Relay outputs, contact data
Um 250 V, Im 5 A, max. 100 VA (AC)
Um 24 V, Im 1.5 A, 20 W (DC)
Protection
6
IP 65
WGA 01
Specifications
Parameter
Value
Operating temperature range
Ambient
0 to +40 °C
Supply
Power supply
230 V, 50 Hz
Tabelle 2: Specifications WGA-ES4 capacitance probe
Parameter
Value
General specifications
Intrinsically safe
II 1 G EEx ia II A T4
Sensor must be connected to
barrier isolated from earth.
Electrical parameters
500 nF; Li = 10 µH; Ii = 170 mA;
Ui = 25,0 V; Pi = 1,1 W
Operating temperature range
Ambient
-20 to +40 °C
Tabelle 3: Specifications WGA-R6 PTC thermistor probe
Parameter
Value
General specifications
Intrinsically safe
II 1 G EEx ia II A T3
Sensor must be connected to
barrier isolated from earth.
Electrical parameters
1 nF; Li = 10 µH; Ii = 200 mA;
Ui = 30,0 V; Pi = 1,0 W
Operating temperature range
Ambient
WGA 01
-25 to +50 °C
7
Transportation and storage
5
Transportation and storage
CAUTION
Damage to the device due to improper transportation.

CAUTION
6
Do not throw or drop the device.
Damage to the device due to improper storage.

Protect the device against shock when storing it.

Store device in a clean and dry environment.
Mounting and commissioning
Evaluation unit


All regulations and instructions for the installation and maintenance of EX certified equipment must be observed (EN 6007914, EN 60079-17 CENELEC).
Use 4 screws to mount the evaluation unit directly on a wall.
Probes
 Fix the ES4 capacitance probe at a height 150 mm below the
constant water level in the separator.
The WGA-ES4 capacitance probe must be immersed in water to
prevent an alarm being initiated.
The WGA-R6 PTC thermistor probe must be immersed in air to prevent an alarm being initiated.
1
Oil
2
Water
3
WGA-ES4 capacitance probe
4
WGA-R6 PTC
thermistor probe
Bild 5: Mounting the probes

8
If a 1" cable gland is used for the mounting in the tank make
sure that the cable is securely tightened.
WGA 01
Mounting and commissioning



6.1
Make sure that the sensor is easy to lift out of the tank in order
to protect the probe when emptying the tank.
The cable should be mechanically protected.
If the device is used for oil surface and high level alarm functions, make sure the WGA-R6 PTC thermistor probe is mounted
at the correct level in the separator tank.
Electrical connection


The cable should be mechanically protected.

The intrinsically safe circuit is not allowed to be earthed.
If the sensor cable needs to be extended, screened cable
2
should be used (2 x 1,5 mm , maximum length 200 m).
Bild 6: Cable connections
P1 WGA-ES4 capacitance probe
1
Brown
P2 WGA-R6 PTC thermistor
probe
2
Blue
R1 Voltage-free relay contact for
layer level alarm
a
230 V supply
R2 Voltage-free relay contact for
overflow alarm
R1 and R2 are shown in the de-energised state, in an alarm
condition.
1. Connect the power supply to connector block K1.
2. Layer level alarm: Connect the WGA-ES4 capacitance probe to
block P1.
3. Overflow alarm (optional): Additionally connect the WGA-R6
PTC thermistor probe to block P2.
WGA 01
9
Mounting and commissioning
4.
Select the right jumper position:
1
Position 1 (factory
setting):
Only layer level
alarm
2
Position 2: layer
level alarm and
overflow alarm
Bild 7: Jumper
6.2
Commission the device





1.
2.
3.
10
Make sure that the connections are made correctly in accordance with fig. 6, page 9.
Incorrect polarity of the sensor cables will result in an alarm on
the evaluation unit.
Make sure that the correct cable type and size has been used.
Make sure the jumper is in the correct position, refer to fig. 7,
page 10.
Make sure that the probes have been mounted at the correct
hight.
Make sure that the cable glands are properly tightened.
Correctly connect the ribbon cable to the pin connector on the
circuit board.
Close the lid.
Start the evaluation unit.
WGA 01
Operation
 While starting the evaluation unit will perform a diagnostic check
of the sensor inputs. In the event of an incorrect connection or
sensor fault an alarm will be given within 30 seconds.
6.3
Test
The evaluation unit has a built-in test function which is used to test
the alarm functions, the relay outputs and the LED indicators.
 Press and hold the "Test" button for approximately 3 seconds.
The test function starts and will go on as follows:
 For 5 seconds a layer level alarm is given.
The red LED for layer level alarm is illuminated and relay R1 is
de-energised.
 For 5 seconds an overflow alarm is given.
The red LED will be illuminated and relay R2 is de-energised.
 For 5 seconds no alarms is given and relays R1 and R2 are energised.

7
The evaluation unit will revert to the normal operating condition.
Operation
WGA 01 will only give a layer level alarm if there is a definite oil or
grease surface layer on the water in the separator chamber. Please
be aware that certain solvents and chemicals can destroy or degrade
the oil or surface layer which could make it impossible for the unit to
provide a proper layer level alarm.
Normal operation – no alarm
No senor alarms given.
•
Green LEDs for "layer level alarm" and "overflow alarm" illuminate.
•
Relays R1 and R2 are energized.
Overflow alarm
•
The red LED for „overflow alarm“ is illuminated.
•
The internal buzzer sounds.
•
R2 is de-energized.
Layer level alarm
•
The red LED for „layer level alarm“ is illuminated.
•
The internal buzzer sounds.
•
R1 is de-energized.
WGA 01
11
Maintenance
Probe failure alarm – layer level
•
With a short circuit on the layer level alarm sensor input the red
LED "layer level alarm" flashes quick (at a rate of 1 Hz), with an
open circuit the red LED flashes slow (at a rate of 1/3 Hz).
•
The internal buzzer sounds.
•
R1 is de-energized.
Probe failure alarm – overflow
•
With a short circuit on the overflow alarm sensor input the red
LED "overflow alarm" flashes quick (at a rate of 1 Hz), with an
open circuit the red LED flashes slow (at a rate of 1/3 Hz).
•
The internal buzzer sounds.
•
R2 is de-energized.
Acknowledge alarms
 Press the reset button.
 The internal buzzer mutes.
The buzzer will sound again after approximately 20 hours if the alarm
condition has not been corrected.
8
Maintenance
Repair and modification is not permitted on site.
 Send the unit to the manufacturer or supplier for attention.
9
Shutting down and disposal
1.
2.
Switch off mains voltage.
Dismount the device (see chapter 0, page 8, reverse sequence
of steps).
3. To protect the environment, this device must not be disposed of
together with the normal household waste. Dispose of the device according to the local conditions and directives.
This device consists of materials that can be reused by recycling
firms. The electronic inserts can be easily separated and the device
consists of recyclable materials.
If you do not have the opportunity to dispose of the used device in
accordance with environmental regulations, please contact us for
possibilities to dispose of it or to return it.
12
WGA 01
Spare parts and accessories
10 Spare parts and accessories
Part
Part No.
Event reporting system Phone Alarm SD1
90003
Event reporting system GSM Alarm
90002
Event reporting system EMS 220
90220
Event reporting system EMS 442
90442
11 Warranty
The warranty of the manufacturer for this product is 24 months after
the date of purchase. This warranty shall be good in all countries in
which this device is sold by the manufacturer or its authorised dealers.
12 Copyright
The manufacturer retains the copyright to this manual. This manual
may only be reprinted, translated, copied in part or in whole with the
prior written consent of the manufacturer.
We reserve the right to technical modifications with reference to the
specifications and illustrations in this manual.
13 Customer satisfaction
Customer satisfaction is our prime objective. Please get in touch with
us if you have any questions, suggestions or problems concerning
your product.
14 Addresses
The addresses of our worldwide representations and offices can be
found on the Internet at www.afriso.de.
WGA 01
13
Appendix
15 Appendix
15.1
14
Approval documents evaluation unit
WGA 01
Appendix
15.2
Approval documents WGA-ES4 capacitance probe
15.3
Approval documents WGA-R6 PTC thermistor probe
WGA 01
15
Appendix
15.4
16
Declaration of conformity
WGA 01