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Appendix 3 - Bilge Alarm Monitor OMD 11
1. Edition
V301110002 Page 1
Operating and Maintenance Instructions Bilge Alarm Monitor OMD 11
ppm POWER ON
OIL ALARM 1
SYSTEM FAULT
OIL ALARM 2
OIL MONITOR OMD-11 RWO Water Technology
1 5
p p m
O i l
C o n t e n t
Al a r m
M o n i t o r
RWO Water Technology Leerkämpe 3 • D-28259 Bremen •Germany Tel. +49-421-537050 • Fax +49-421-5370540 e-mai: [email protected] • http://www.rwo.de A member of the Sterling Fluid Systems Group
Water Technology * Bremen * Germany
P. Gross
Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
1. Edition
V301110002 Page 2
Table of Contents Page 1
Monitor description 1.1 Introduction 1.2 Scattered light measurement method 1.3 Design of the Monitor OMD 11
3 3 4 5
2
Technical Specifications
6
3
Installation of Monitor OMD 11 3 3.1 With an RWO oily water separator of 0.1 or 0.25 m /h capacity 3 3.2 With an RWO oily water separator from 0.5 to 10 m /h capacity
7 7 7
4
Operation 4.1 Important notes 4.2 Commissioning 4.2.1 4.2.2
4.3 4.4 4.5 4.6
8 8 8 8 9 9 9 10 10
Connections Functional tests
Alarm levels Alarm set points and time delay Setting alarm levels and time delays Recorder
5
Piping connections 3 5.1 With an RWO oily water separator of 0.1 or 0.25 m /h capacity 3 5.2 With an RWO oily water separator from 0.5 to 10 m /h capacity
11 11 12
6
Electrical connections 6.1 Warning 3 6.2 With an RWO oily water separator of 0.1 or 0.25 m /h capacity 3 6.3 With an RWO oily water separator from 0.5 to 10 m /h capacity 6.4 Wiring plan
13 13 13 14 14
7
Monitor operation 3 7.1 With an RWO oily water separator of 0.1 or 0.25 m /h capacity 3 7.2 With an RWO oily water separator from 0.5 to 10 m /h capacity 7.3 Before commissioning 7.4 Before each start 7.5 Monitoring operation and alarm events during operation
15 15 15 15 15 16 16 16
7.5.1 7.5.2
When water containing oil flows through the device If the oil concentration should exceed 15 ppm
8
Storage under frost conditions
16
9
Maintenance
16
10
Troubleshooting 10.1 Fault finding 10.2 Sample cell tube replacement 10.3 Replacement of the PCB 10.4 Calibration
17 17 17 18 20
11
Spare parts 11.1 Drawing of spare parts positions 11.2 Spare parts list 11.3 Exchange parts service
21 21 21 22 22 22 22
11.3.1 11.3.2 11.3.3
General exchange equipment service Exchange of electronic components
Water Technology * Bremen * Germany
P. Gross
Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
1
1. Edition
V301110002 Page 3
Monitor description 1.1 Monitor description The OMD-11 Bilge Alarm Unit has been designed specifically for use in conjunction with 15 ppm oil-water separator units and has a specification and performance which meets the requirements of the IMO (International Maritime Organisation) specifications for Bilge Alarm Units contained in Resolution MEPC. 60 (33). The unit is supplied with 2 works-adjusted alarms at 15 ppm. Other set points (10 ppm or 5 ppm) are possible and can be adjusted on site at any time by using the buttons at the front panel. If an alarm set point is exceeded, the alarms are visible at the front panel and the appropriate relays are switched. Furthermore a 0(4) - 20 mA (equal to 0 - 30 ppm) signal output is available for driving a recorder or external meter. The connection is done with an optional available adapter. The water sample is taken from the flowing water upstream of an orifice. The following National IMO-type test certificates in accordance with MEPC. 60(33) are available, issued by the national authorities of the countries listed below. The list is an interim one and necessarily incomplete, as further national certification has been applied for. Country
National Authority
Country
Germany
SEE BERUFSGENOSSENSCHAFT / GERMANISCHER LLOYD
Canada
Belgium
MINISTERIE VAN VERKEER EN INFRASTRUCTUUR
Italy
MINISTERO DEL L’AMBIENTE
England
MSA MARINE SAFETY AGENCY C/O GERMANISCHER LLOYD
P.R. China
REGISTER OF SHIPPING OF THE PEOPLE’S REPUBLIC OF CHINA
Finland
FINNISH MARITIME ADMINISTRATION
Danmark
DANISH MARITIME AUTHORITY
France
MINISTÈRE DE I`EQUIPEMENT DES TRANSPORT ET DU LOGEMENT
Poland
POLSKI REJESTR STATKOW
USA
U. S. DEPARTMENT OF TRANSPORTATION UNITED STATES COAST GUARD
Europa
MED-EC Conformity
Norway
Russia
SJØFARTSDIREKTORATET NORWEGIAN MARITIME DIRECTORATE RUSSIAN MARITIME REGISTER OF SHIPPING
National Authority DEPARTMENT OF TRANSPORT CANADA SAFETY AND SECURITY MARINE SAFETY
MINISTERIE VAN VERKEER EN The Netherlands WATERSTRAAT; THE HEAD OF THE NETHERLANDS SHIPPING INSPEKTORATE
Sweden
SWEDISH MARITIME ADMINISTRATION
Spain
MINISTERIO DE FOMENTO
Water Technology * Bremen * Germany
P. Gross
Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
1. Edition
V301110002 Page 4
1.2 Scattered light measuring method Several optical sensors measure a combination of light scattered and absorbed by oil droplets in the sample stream. The sensor signals are then processed by a microprocessor to produce a linearised output. If an alarm (works set point 15 ppm) occurs, the two oil alarm relays are activated after the (adjustable) time delay. A self-diagnosis is integrated in the monitor for the components of the sensor and the evaluation circuitry. The microprocessor continuously monitors the condition of the sensor components and associated electronics to ensure that calibration accuracy is maintained over time and extremes of environmental conditions. The diagram below shows the principle of scattered light measuring.
reference beam light receiver light emitter IR LED
scattered light receiver
measuring cell tube oil particles
This measuring principle is the most frequently used method for the continuous measurement of oil in water and has proved itself in practice.
Water Technology * Bremen * Germany
P. Gross
Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
1. Edition
V301110002 Page 5
1.3 Design of the Monitor All components are assembled in an alloy enclosure with the protection class IP 65. The optical components are mounted directly on the printed circuit board. The plug-in technology ensures an easy changing of the components together with a compact and robust construction. The electronics are state-of-the-art. The wetted parts are produced from stainless steel to ensure a reliable corrosion protection for a long time. The sample water is fed to the unit from underneath and is discharged at the top and to the side. The mounting brackets of the unit are prepared at the rear of the unit either for wall or bulkhead mounting.
Auslaß
OIL MONITOR OMD-11 RWO Water Technology
Einlaß
Fig. 1 Pos Description
Pos Description
Pos Description
1
Inlet block
6
Housing
11
LED "Fault"
2
O-rings
7
Sample cell tube
12
LED "Alarm 1"
3
Printed circuit board
8
Connection cable
13
LED "Alarm 2"
4
Outlet block
9
Display
14
Desiccator
5
Head screw
10
LED "Power"
15
Flow adjustm. screws
Water Technology * Bremen * Germany
P. Gross
Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
2
1. Edition
V301110002 Page 6
Technical Specifications Range:
0 - 30 ppm, Trend 0 - 50 ppm
Accuracy
Better than ± 5 ppm (within IMO requirements)
Linearity
Up to 30 ppm better than ± 2 %
Display
2 digits 14 segment LEDs
Power Supply:
24 Volt AC/DC ± 15%
Power Consumption:
5 VA
2 Alarm Points:
Adjustable between 2 - 15 ppm (Works adjustment 15 ppm)
Alarm Operating Delay:
Adjustable between 2 - 20 sec. (Works settings 1 = 10 sec, 2 = 10 sec)
Alarm Contact Rating:
Potential free 1 pole change over contacts, 3 A / 24 V
System Fault Alarm:
LED
Alarm Indication:
Red LEDs
Output Signal:
0 - 20 mA or 4 - 20 mA, reversible, Ri < 500 Ω
Class of Protection:
IP 65
Sample Water Pressure:
0.1 - 8 bar
Sample Flow:
approx. 0.5 - 4 l/min depend. to pressure
Ambient Temperature:
- 30 to + 70° C
Sample Water Temperature:
+ 1 to + 60° C
Humidity
Max. 90% max at 55°C
Cleanwater connection
Freshwater or seawater (for flushing and calibration)
Pipe Connections:
R 1/4" Female
Roll:
up to 22.5°
Size (overall):
175 mm long x 190 mm high x 220 mm width
Weight:
3.5 kg
Water Technology * Bremen * Germany
P. Gross
Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
V301110002 Page 7
Installation of the Monitor OMD-11 3.1 With an RWO oily water separator of 0.1 or 0.25 m3/h capacity Because of the small size of the oily water separator, the Monitor OMD-11 is not mounted on the separator but delivered separately.
IMPORTANT The Monitor OMD-11 should be located close to the oily water separator in order to minimise response delays. The distance between monitor and separator should never be more than 8 metres; any greater distance would result in a response time of over 20 seconds which is the max response time in accordance with IMO regulations. overall dimensions
120
165
140
135
3
1. Edition
172
213
Fix the Monitor OMD-11 with four M5 bolts on a rigid vertical surface, if possible with the display at eye level. Connect the 3-way cock on the Monitor OMD-11 with the separator’s clean water outlet pipe and the freshwater supply, using 8 mm copper piping and ERMETO connections. The sampling pipe should be installed horizontal or in a continuous upward flow. The outlet pipe of the Monitor OMD-11 has to be connected to the 3-way diverting valve. In the alarm state, the effluent water is recirculated to bilge. When assembling the housing and connecting the piping, it is important to avoid stressing the housing so as to prevent possible damage.
3.2 With an RWO oily water separator from 0.5 to 10.0 m3/h capacity The monitor is supplied ready-installed on the oily water separator with all necessary piping and wiring.
Water Technology * Bremen * Germany
P. Gross
Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
4
1. Edition
V301110002 Page 8
Operation 4.1 Important Notes a)
This equipment must be installed and operated in strict accordance with the instructions contained in this manual. Failure to do so will impair the protection provided.
b)
Installation and servicing must be undertaken by a competent and suitably skilled person.
c)
The equipment must be earthed according to the relevant requirements.
d)
The unit must be isolated from the electrical supply before any maintenance of the equipment is attempted.
e)
All national or local codes of practice or regulations must be observed and, where applicable, are deemed to take precedence over any directive or information contained in this manual.
f)
To avoid wrong measurements, only quick separating detergents / cleaner should be used.
g)
In case of freezing conditions the measuring cell should be emptied completely.
4.2 Commissioning Once the installation, wiring and piping connections have been completed, carry out the following checks:
4.2.1
Connections a) Switch the oily separator to „ON“. Check whether the Power LED lights up. Check the power supply to the oily separator if necessary.
DANGER At electrical voltages > 42 V Direct contact with live parts can cause serious injury or death. Only qualified electricians should carry out work on live parts. b) Check all piping connections for leaks and rectify as appropriate. c) Check the flow rate. The equipment is set up in the factory for a flow rate 0.5 up to 4 l/min. Adjust the flow rate through the unit by using the small screws in the cell cap (Fig. 1, Pos. 15). Turning the screw anticlockwise will increase the flow rate. Note: The flow rate should be checked on both the clean water supply and the separator sample supply. If the clean water supply is obtained from a high pressure source, the flow rate will be higher than from the sample point. The flow rate does not influence the accuracy of the instrument. The adjustment is only important for the time delay between the sample point and the monitor.
Water Technology * Bremen * Germany
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Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
4.2.2
1. Edition
V301110002 Page 9
Functional Tests a) Run oil-free water through the instrument to purge the system. a) Switch on the instrument and make sure that the Power LED is illuminated and the display is changing between "INI" and numbers, decreasing from "20". The monitor will display "0" with clean water, otherwise the monitor will be in working conditions when it reached the measured value. Allow a few minutes for the system to warm up and stabilise. b) During oil-free water is running through the monitor check the Zero adjustment according Section 11. The display should be "0". If the display varies by greater amounts, it may be that air entrainment is present. If this is the case, the cause must be located and rectified. c) If the Zero needs to be calibrated, this can be done by using the buttons on the front panel. Pressing simultaneously the buttons " ! " and " " " will decrease the display, pressing simultaneously the buttons " " " and " # " will result in a higher reading.
4.3 Alarm The unit is delivered with a works adjustment according the IMO-requirements. The alarm points are set to 15 ppm. Other alarm levels (for 5 or 10 ppm) can be set (see 4.4).
4.4 Alarm Set Points and Time Delay Two alarm circuits, with levels adjustable over the entire measuring range, are built into the equipment. The alarm circuits 1 + 2 are set up in the factory for 15 ppm (according to IMO). Each circuit has an alarm LED associated with it. Each alarm circuit has, in addition, a potential-free contact for feeding the signal to the outside or for the controlling of electrical circuits. In RWO oily separators with Monitor OMD-11, the alarm 1 signal is taken to the ship’s alarm system. The signal cable should be connected to terminals 17 and 18 of the separator’s control system. In RWO oily separators with Monitor OMD-11, the alarm 2 signal is used to control the 3way recirculation valve. If the limiting value for residue oil is exceeded, it is switched to recirculate back to the bilge or to the bilge water tank. The valve will also be switched to this position if the bilge water oil separator is switched to the „OFF“ position or the pneumatic pressure fails.
Please note for better understanding: Alarm output of the Monitor OMD-11 • in alarm status the position of the alarm switch is open (potential-free, de-energised) • if the power supply is interrupted or the system is not in service, the position of the alarm sw itch is also in alarm position open, (potential-free, de-energised) This fact sometimes causes trouble because the ship’s alarm is initiated when the oily water separator is off. Because of this fact, we recommend to connect the alarm 1 output to the control box of the oily water separator. Here the alarm circuit will be closed as soon as the main switch of the control box is in „off“ position i. e. no alarm signal will be transmitted as long as the oily water separator is not in service. The alarm 2 is used to control the 3-way diverting valve at the clean water outlet of the oily water separator. If the oil content in the outflow exceeds 15 ppm, the 3-way valve will be switched over from "overboard discharge“ to "recirculation to bilge or bilgewater tank“.
Water Technology * Bremen * Germany
P. Gross
Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
1. Edition
V301110002 Page 10
4.5 Setting alarm levels and time delays Both alarm relays can be set to individual thresholds between 2 - 15 ppm and a time delay between 2 - 20 sec., if required. The works setting for both thresholds is 15 ppm according to IMO. The time delay for alarm relay 1 and 2 is factory- adjusted to 10 sec. • Alarm relay 1 for the ship’s alarm and • Alarm relay 2 for the 3-way recirculation valve All adjustments can be changed on site by using the buttons on the front panel. The adjustment can only be done in the programming mode. To enter this mode, all 3 buttons " ! " # " have to be pressed simultaneously when the monitor is powered on. During the programming mode the unit is in the alarm condition. After starting the programming mode the display will show an "A" changing with the actual alarm set point. At the same time the alarm LED for alarm circuit 1 is energised. Pressing the " ! " button will decrease the set point, pressing the " # " button will increase the threshold. An alarm set point above 15 ppm is not possible. When the changed set point is confirmed by pressing the " " " button, or if the internal adjusted time without pressing any button is passed, the display will show a "T" changing with the actual time delay. At the same time the alarm LED for alarm circuit 2 is energised. Pressing the " ! " button will decrease the time delay pressing the " # " button will increase the time delay. A time delay above 20 sec. is not possible. After confirming the selected value the sequence is repeated for alarm circuit 2. In this case the alarm LED for alarm circuit 2 is energised. The last point of the programming mode is done by the choice for the signal output. It can be changed between 0 - 20 mA and 4 - 20 mA. The changing is done similar to the a.m. settings by using the " ! " or the " # " button. The display will show the actual value of "0-" or "4-". Note: All changes have to be confirmed by pressing the " " " button. Otherwise the old values are still valid.
4.6 Recorder If a recorder is necessary for continuous measured value data acquisition, RWO can offer its own single-channel recorder of type DEGU. The Monitor OMD-11 has an output signal (either 0 - 20 mA or 4 - 20 mA) available for this purpose.
Water Technology * Bremen * Germany
P. Gross
Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
5
1. Edition
V301110002 Page 11
Piping connections Installation of the Monitor OMD-11 and the 3-way recirculation valve including all accessories for automatic switching to recirculation when the limit value (normally 15 ppm) in cleaned bilgewater is exceeded.
5.1 With an RWO oily water separator of 0.1 or 0.25 m3/h capacity The Monitor OMD-11 should be mounted on a vertical surface in the immediate neighbourhood of the RWO oily separator and connected below as shown in the piping diagram. The piping connections for the equipment are R 1/4" internal thread. We recommend 8 mm copper piping x 1 mm wall thickness with clamp ring screw connectors for the pipe connections. The following connections should be made: 1. The sample water inlet (Pos 25, 3-way ball-valve) on the monitor should be connected by pipes to • the clean water outlet on the separator (Pos. 13 on the pump) and • a line with freshwater or clear seawater for cleaning and zero-balancing. 2. The sample water outlet is at the upper right of the transmitter head, below the screw cap. It shall be connected to the 3-wayrecirculation valve, Pos. 23.
IMPORTANT! 3
For separators with a capacity of 0.1 m / h, the pump is not installed on the separator but is supplied as a separate item.
Pos. SKIT aquaclean S 3 13 14 15 17 23 25 25A 25B 36
Control Panel Effluent Outlet Eccentric-Screw-Pump Flushingwater Inlet Oil Monitor OMD Pneum. Three-way Valve Three-way Ball Valve Flushingwater Inlet Samplewater Inlet Pressure Reducing Valve Flanges
Water Technology * Bremen * Germany
0,1
0,25
DN15 DN15 DN15 DN15 DN20 DN20 R1/4" R1/4" R1/4" R1/4" R1/4" R1/4" R1/2" R1/2" PN 16 DIN 2633
P. Gross
Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
1. Edition
V301110002 Page 12
5.2 With an RWO oily water separator from 0.5 to 10.0 m3/h capacity The inlet pipe is screwed into the base of the vessel and for oily water separators with a 3 capacity of 0.5 to 10 m / h is already fitted and piped up, including all accessories ordered. The outlet is top right at the transmitter head, just below the screw cap. The sample water is fed to a funnel. Samples can be taken here for test purposes.
Pos. SKIT aquaclean S 3 11 13 14 15 17 23 25 25A 25B 28 36
Control Panel Orifice Effluent Outlet Eccentric-Screw-Pump Flushingwater Inlet Oil Monitor OCD Pneum. Three-way Valve Three-way Ball Valve Flushing water Inlet Sample water Inlet Funnel Pressure reducing Valve Flanges
Water Technology * Bremen * Germany
0,5
1,0
1,5
2,5
5,0
10,0
DN25 DN25 DN25 DN50 DN50 DN65 DN20 DN20 DN20 DN20 DN25 DN32 DN20 DN25 DN32 DN32 DN40 R1/4" R1/4" R1/4" R1/4" R1/4" R1/4" R1/4" R1/4" R1/4" R1/4" R1/4" R1/4" R1/4" R1/4" R1/4" R1/2" R1/2" R1/2" R1/2" R1/2" R3/4" R3/4" R3/4" R3/4" R 1" PN 16 DIN 2633
P. Gross
DN50 R1/4" R1/4" R1/4" R1/2" R11/4"
Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
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1. Edition
V301110002 Page 13
Electrical connections 6.1 Warning
DANGER At electrical voltages > 42 V Direct contact with live parts may cause serious injury or death. Work on live parts should only be carried out by qualified electricians.
6.2 With an RWO oily water separator of 0.1 or 0.25 m3/h capacity The monitor, including all accessories ordered for the automatic switchover of recirculation to bilge, will be supplied as individual items and not assembled. As can be seen from the wiring diagram in Section 6.4, the alarm relay contacts are potential-free and shown in the alarm state. The monitor is supplied complete with a 9-core, 2 meter-long connecting cable. This cable conveys the alarm signals to the terminal strip of the oily water separator control and carries the power supply to the monitor.
IMPORTANT! If the connecting cable is not long enough, do not open up the monitor yourself to install a longer cable. There is a danger of damaging the sensitive electronic parts and invalidating the guarantee. Get in touch with us to see about delivery of a monitor with a longer cable. You will find details of the connections in the wiring diagram accompanying Section 8.3 of the installation instructions of the oily water separator. The following electrical connections should be made: • Power supply 24V AC via cores 1 and 2 of the RWO oily water separator control, terminals 13 and 14 to Monitor OMD-11. • Oil - alarm output circuit 2 via cores 6 and 7 from monitor to RWO oily water separator, terminals 13 and 15 and from there further to the 3-way-recirculation valve. • Connection to an alarm indicator in the control room, if required. We recommend you to connect the oil alarm output circuit 1 via the cable cores 3 and 4 from the monitor to the RWO separator, terminals 17 and 18, and from there further to the control room. • Connection of an external recorder etc., if required For connecting the signal further, you require a connecting adapter with a 2 metre-long cable, Article No. 51108EM001.
Water Technology * Bremen * Germany
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Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
1. Edition
V301110002 Page 14
6.3 With an RWO oily water separator from 0.5 to 10.0 m3/h capacity The monitor is supplied ready-to-use, including all accessories ordered, for the automatic switching of recirculation to bilge and mounted on the RWO separator. The following electrical connections should be made, if required: See also the oil separator installation instructions, Section 8.3. • Connection of an alarm annunciation to the control room. The oil alarm output is taken via the cable cores 3 and 4, circuit 1 of the monitor to the RWO separator control, terminals 17 and 18. We recommend, for the reasons described in Section 4.4 of these instructions, to use the oil alarm relais 1 as alarm signal to the control room. • Connection of an external recorder or oil content indication. For the routing of this signal you require a connecting adapter with a 2 meter-long cable, Article No. 51108EM001.
6.4 Connection Diagram
OIL MONITOR OMD-11 RWO Water Technology
Adapter für Rekorder (optional)
adapter for recorder (optional)
24 Volt AC/DC
1
2
Ölalarm
Ölalarm
E
Signal - Ausgang
oil alarm
oil alarm
e
signal - output
RL 2
RL 1
3
4
5
6
7
0(4)-20 mA
8
E
Weiß(+) Braun(-) white (+)
brown(-)
The relay contacts are shown in the alarm state (not energised).
Water Technology * Bremen * Germany
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Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
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V301110002 Page 15
Monitor operation 7.1 with an RWO oily water separator of 0.1 or 0.25 m3/h capacity
IMPORTANT! With these low capacity separators, the complete water flow of the separator is led through the monitor. For this, the holes in the head screw of the cell are opened by removing the flow adjustment screws in the factory.
7.2 with an RWO oily water separator from 0.5 to 10.0 m3/h capacity
IMPORTANT! With these separators, only a part of the water flow through the separator is led via a bypass through the monitor. For this, a back-pressure orifice plate (separator, Pos. 11) is built into the main flow between the pump and the 3-way recirculation valve (separator Pos. 23). The amount of the flow through the monitor is, as a rule, already set up in the factory. The flow rate can be increased in special installation cases by the removal of an adjusting screw, or even both if required, Pos. 15, in the cell head screw (see Section 1.3, Fig. 1). The flow rate should be at least 0.5 litre/min and for these separator duties, usually not greater than 2 litre/min.
7.3 Before commissioning 7.3.1
Check if all electrical wiring is done perfectly.
DANGER At electrical voltages > 42 V Direct contact with live parts may cause serious injury or death. Work on live parts should only be carried out by qualified electricians. 7.3.2
Check that all mechanical connections are correct and seated properly.
7.4 Before each start 7.4.1 7.4.2 7.4.3
7.4.4 7.4.5 7.4.6
Switch the 3-way ball valve to the position "flushing with clean water". Set the main power switch on the oily water separator to "ON". The power LED should light up and the indicator "INI" should show a set of numbers, beginning with "20", then change and after a short time show "0“. Carry out a zero balance, if necessary (see Section 4.2.2). Wait several minutes till the equipment has reached its operating temperature and a stable state. Switch the 3-way ball valve to the position "sample water supply". The equipment is now ready for operation and can monitor the clean water leaving the separator.
Water Technology * Bremen * Germany
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Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
1. Edition
V301110002 Page 16
7.5 Monitoring operation and alarm events during operation
8
7.5.1
When water containing oil flows through the device, the oil concentration is indicated by the 2-figure, 14-segment LEDs. The alarm LEDs, Pos 12 and 13, (see Section 1.3, Fig. 1) show green.
7.5.2
If the oil concentration should exceed 15 ppm, the alarm LEDs, Pos 12 and 13, (see Section 1.3, Fig. 1) change from "GREEN" to "RED" and both relays (relay 1, alarm to control room and relay 2, for the 3-way recirculation valve) switch over after 10 secs..
Storage under frost conditions IMPORTANT! During standstill when there is a danger of freezing, the measurement cell must be completely emptied in order to prevent the glass tube breaking. To do this, loosen and then remove both water supply pipes at 3-way ball valve (separator, Pos 25),. switch the 3way ball valve to the flushing water supply position. The water can then run out of the measuring cell.. Remove the measuring cell head screw and carefully blow out any water remaining.
9
Maintenance The maintenance effort needed to keep the device functioning is relatively low. The following maintenance work should be carried out each week: a) Switch the separator off. b) Flush out the measuring cell with oil-free water. c) Close the sample water and clean water supplies. d) Remove the measuring cell head screw (Fig. 1, Pos. 5). e) Use a brush in the measuring cell to clean the glass tube by using an up and down motion over the whole of its length. f) Remove the brush and replace the measuring cell head screw. g) Open the clean water inlet and flush out the measuring cell for several minutes. h) Switch the separator on. i) The monitor power LED should light up and the indicator "INI" should show a set of numbers, beginning with "20", then change and after a short time show "0". j) If "0“ does not appear, carry out a zero balance as in Section 4.2.2. k) Open the process water inlet. l) Check whether the desiccator cartridge (Fig. 1, Pos. 14) is blue in colour. If it is light blue or white, the cartridge is exhausted and has to be replaced.
IMPORTANT! The desiccator cartridge ensures a low humidity inside the measuring cell to prevent erroneous readings which could arise from condensation on the glass tube. Changing the cartridge is done by unscrewing the unit from the front plate and screwing in again. This can be done without opening up the equipment. The protective shell of the new cartridge serves also as a tool.
Water Technology * Bremen * Germany
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Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
1. Edition
V301110002 Page 17
10 Troubleshooting 10.1 Fault finding A fault is indicated, when the green "Power"-LED is off and the red "Fault"-LED is illuminated. Simultaneously a fault code will be shown in the display: Display
All other displays
Reason
Servicing
Meter out of range (only when without flashing) Oil content too high, dirty sample tube
Clean sample tube, wait until oil content is within the range
Fault indication flashing in connection with "TR" or "SF"
See under "TR" or "SF"
System Fault, damaged LED or faulty electronics
Changing of PCB, repair at manufacturer
Transmission Fault, sample too dark, sample tube dirty
Cleaning of sample tube
Water failure, water inside the housing of the unit
Open the unit, clean and dry the housing, replacement of sample tube as necessary Calibration according Section 13.3.
Calibration request after changing the position of Jumper J1 inside the instrument
Calibration according Section 13.3
System Fault
Changing of PCB, repair at manufacturer
10.2 Sample Cell Tube Replacement An alarm, as described in 10.1, is also given if there is a defect in the sample tube. In this case the glass tube must be replaced as soon as possible to prevent damage by oxidation to the electronics. The sample tube should be changed as follows:
IMPORTANT! Before opening the device, make sure that any water that might be lying on the housing is wiped off. If you don’t take this precaution, water can run over the edge into the device and damage the electronic parts. 10.2.1 Switch off the power supply. 10.2.2
Remove all piping from the instrument.
10.2.3
Open the instrument and remove the front panel. Disconnect the plug connection from the PCB (Dwg. No. 60600-50, P4). Pull the PCB carefully out of its seat.
10.2.4
Loosen the 3 screws from the outlet block (4) and remove this carefully. Loosen the 3 screws from the inlet block (1) and remove this together with the sample tube (7).
10.2.5
Clean the inner part of the instrument and make sure that everything is dry.
Water Technology * Bremen * Germany
P. Gross
Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
1. Edition
V301110002 Page 18
10.2.6
Replace the O-rings (2) and the sample tube (7) in the inlet block (1). Replace the O-rings (2) in the outlet block (4).
10.2.7
Mount the inlet block, the outlet block and the piping.
10.2.8
Do a pressure test at approx. 8 bar with oil free water and make sure that the sample tube is absolutely clean from the outside.
10.2.9
Insert the PCB and make sure that the connection wiring is routed correctly. Reconnect the front panel to the PCB (Dwg. No. 60600-30) and screw it back in place.
10.2.10 Examine the colour of the desiccator (Fig. 1, Pos. 14). If the colour is light blue or white, the desiccator needs to be replaced.
IMPORTANT! The desiccator cartridge ensures a low humidity inside the measuring cell to prevent erroneous readings which could arise from condensation on the glass tube. Changing the cartridge is done by unscrewing the unit from the front plate and screwing in again. This can be done without opening up the equipment. The protective shell of the new cartridge serves also as a tool. 10.2.11 Carry out a calibration according to Section 13.3. The monitor is now ready for use.
10.3 PCB Replacement (Refer to Fig. 1)
DANGER At electrical voltages > 42 V Direct contact with live parts may cause serious injury or death. Work on live parts should only be carried out by qualified electricians.
IMPORTANT! Before opening the device, make sure that any water that might be lying on the housing is wiped off. If you don’t take this precaution, water can run over the edge into the device and damage the electronic parts. 10.3.1
Switch off the power supply and stop the water flow.
10.3.2
Open the instrument and remove the front panel. Disconnect the plug connection to the PCB (Dwg. No. 60600-50).
10.3.3
Pull the PCB carefully out of its seat and disconnect the wiring.
10.3.4
Connect the new PCB accordingly.
10.3.5
Mount the PCB and replace the front panel.
10.3.6
Examine the colour of the desiccator (14). If the colour is light blue or white, the desiccator needs to be replaced.
10.3.7
Carry out a calibration according to Section 4.2.2.
Water Technology * Bremen * Germany
P. Gross
Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
1. Edition
V301110002 Page 19
Drawing No. 60600-30
Water Technology * Bremen * Germany
P. Gross
Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
1. Edition
V301110002 Page 20
10.4 Calibration
DANGER At electrical voltages > 42 V Direct contact with live parts may cause serious injury or death. Work on live parts should only be carried out by qualified electricians.
IMPORTANT! Before opening the device, make sure that any water that might be lying on the housing is wiped off. If you don’t take this precaution, water can run over the edge into the device and damage the electronic parts. When calibrating, it is necessary to have a comparison liquid available. For the monitor OMD-11 this is a Formazin-in-water solution with a concentration of 100 FTU (Formazin Turbidity Units). A suitable calibration set can be ordered specially under the Article No. 51108EM002. 10.4.1 Switch off the power supply and stop the water inflow. 10.4.2
Open up the device and remove the front plate. Pull the printed circuit board forward a little till the jumper J1 is accessible.
10.4.3
Set the jumper J1 to its other position, so that the centre pin is now jumpered to the one on the other side of it.
10.4.4
Replace the front plate and switch the power on. "CA“ now appears in the display and the device is in the alarm state.
10.4.5
Carefully clean the sample tube with clean water and the sort of brush suitable for cleaning bottles, as described in Section 12.
10.4.6
Empty the sample tube and fill it with a 100 FTU Formazin solution (A suitable calibration set can be ordered specially under the Article No. 51108EM002.). It is necessary, under certain circumstances, to fill the tube twice with the Formazin solution to exclude the possibility of dilution by any water which may be present.
10.4.7
When you have made sure that the correct Formazin solution is in the device, press the keys " ! " and " # " at the same time. There now appears in the display 16 ± 1 and the device is calibrated anew.
10.4.8
Now proceed as described in Section 7.4.
Water Technology * Bremen * Germany
P. Gross
Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
1. Edition
V301110002 Page 21
11 Spare Parts 11.1 Drawing showing spare part positions
Auslaß
OIL MONITOR OMD-11 RWO Water Technology
Einlaß
11.2 Spare parts list No. Of pieces 1 1 Set 1 1 1 1 1 1 1 1 1 Set
Pos. 7 2 3 14 1 4 5 F1
Description Sample tube O - Rings for sample tube Printed circuit board Desiccator cartridge Inlet block Outlet block Head screw Fuse (Dwg. 60600-30) Brush Calibration set Spare parts * (in a box)
Article No. 51108EM003 51108EM004 51108EM005 51108EM006 51108EM007 51108EM008 51108EM008 513110025T 51106OCD45 51108EM002 51108EM020
* Spare Parts Box contains: 1 piece
Sample tube (7)
1 pieceDesiccator cartridge (14)
1 piece
O-rings (2)
1 pieceBrush
1 piece
Fuse
Note: All spare parts are optional and not in the standard scope of supply
Water Technology * Bremen * Germany
P. Gross
Issue: 01.06.01
Appendix 3 - Bilge Alarm Monitor OMD 11
1. Edition
V301110002 Page 22
11.3 Exchange Parts Service 11.3.1
General Our equipment undergoes strict quality controls before leaving the factory and is calibrated according to the IMO specifications.
11.3.2
Exchange Equipment Service If, in spite of the care mentioned above, it should come to an equipment failure, we recommend you to order a complete exchange monitor from us. This ensures that, after the exchange, you have a monitor on board that has been overhauled and tested in our factory. The defective device which has been replaced should then be sent back to us immediately. If you return the defective monitor to us within a reasonable period of time (30 days), RWO will only charge for the repair and transport costs. Otherwise we must charge the full sum shown on the invoice which accompanies the exchange monitor we send to you. Experience has shown that this offers the customer the most reasonable price and ensures at the same time that a device is employed which meets the IMO specifications.
11.3.3
Exchange of electronic components Because of small variations in the characteristics of the same type of component, it is recommended to calibrate the Oil monitor after repair and replacement of such components (except for relays, fuses, etc.). Otherwise it can come to faulty display values and, if the display value is very low, to exceeding the allowable limit of oil in water. For the above reasons, we recommend you to order to an exchange unit from us.
Important Contact Numbers: RWO Repairs and Service Tel:+49-421-5370535 Fax:+49-421-5370540
RWO Spare Parts Service Tel: +49-421-5370518 Fax: +49-421-5370540
IMPORTANT! When you are ordering spare parts or exchange units, please give us the serial no. or construction no. of the oily water separator number! (see cover sheet of the operating instructions or the name plate on the bilge water separator).
Water Technology * Bremen * Germany
P. Gross
Issue: 01.06.01
