Deckma Hamburg OMD-2005 Bedienungsanleitung
INSTRUCTION MANUAL
15ppm Bilge Alarm
Type OMD-2005
DECKMA HAMBURG GmbH
Kieler Straße 316, D-22525 Hamburg - Germany
Tel.: +49 (0) 40 54 88 76-0, Fax: +49 (0) 40 54 88 76-10
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DECKMA HAMBURG GmbH
Issue: 27.05.08 Instruction Manual OMD-2005 Page 2 of 25
IMPORTANT NOTICE
Replacement components for 15ppm Bilge Alarms.
General
All monitors in our range are inspected and tested to the related I.M.O. requirements at
our factories prior to delivery.
In normal use the units should operate correctly and without fault over a long period of
time requiring only small amounts of maintenance to be carried out as outlined in the
instruction manuals.
Service Exchange Units
In the event of a monitor malfunction due to electrical or electronic component failure it
is our recommendation that a service exchange unit be ordered.
The defective instrument should be returned to our works within 30 days of supplying
the service exchange unit, then only the repair charge is payable. Otherwise the whole
cost of a service exchange unit becomes payable.
This procedure is by far the easiest and most cost effective way of ensuring the monitor
on board conforms to I.M.O. resolution MEPC.107 (49).
Remark:
According the MEPC.107(49) § 4.2.11 the unit has to be checked at IOPP Certificate
renewal survey by the manufacturer or persons authorized by the manufacturer.
Alternatively the unit may be replaced by a calibrated 15 ppm Bilge Alarm. The OMD-
2005 is designed in that way, that only the measuring cell needs to be changed, as this
unit carry the calibration onboard. The Calibration Certificate with the date of the last
calibration check should be retained onboard for inspection purposes.
If for some reasons the computer unit needs to be changed, it has to make sure, that
the memory card will remain on board for at least 18 month. The new computer unit will
carry its own memory card. The old card can be insert into the new unit only for reading.
Writing is only possible with the card delivered with the new computer unit. For details
see section 13.1.
Warranty
Our warranty terms are12 months after installation but maximal 18 months after delivery
ex works. The maker undertakes to remedy any defect resulting from faulty materials of
workmanship except wearing parts.
The maker's obligation is limited to the repairs or replacement of such defective parts by
his own plant or one of his authorized service stations.
The purchaser shall bear the cost and risk of transport of defective parts and repaired
parts supplied in replacement of such defective parts.
ANY DISMANTLING OR BREAKING OF A SEAL WILL VOID THE WARRANTY
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Issue: 27.05.08 Instruction Manual OMD-2005 Page 3 of 25
CONTENTS
SECTION TITLE PAGE
1.0 Introduction 4
2.0 Important Notes 4
3.0 Principle of Operation 4
3.1 Measuring Principle 4
3.2 Features 5
3.3 Adjustment 5
3.4 Displays and Alarms 5
4.0 Specification 7
5.0 Construction 8
6.0 Installation 9
7.0 Piping 10
8.0 Wiring 11
8.1 Typical Control System 13
9.0 Power Supply 13
10.0 Commissioning 13
10.1 Electrical 13
10.2 Piping 13
10.3 Functional Tests 14
10.4 Programming Mode 15
11.0 Operating Instructions 17
11.1 Operator Notes 18
12.0 Operator Maintenance 18
12.1 Manual Cell Clean Unit 19
13.0 Fault Finding 20
13.1 Memory Card 22
14.0 Calibration 23
14.1 Calibration and Repeatability Check 23
15.0 Spare Parts 24
15.1 Recommended On Board Spares 24
16.0 Remarks 25
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Issue: 27.05.08 Instruction Manual OMD-2005 Page 4 of 25
1.0 INTRODUCTION
The OMD-2005 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 exceeds the requirements of the International Maritime
Organization specifications for 15ppm Bilge Alarms contained in Resolution
MEPC. 107 (49).
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 exceed, the alarms are visible at the front panel and the
appropriate relays are switched. In case of malfunction the System LED at the
front panel will change from blinking green to permanent red and the appropriate
relay will switch the contacts.
For the data logging function the unit requires an status input from the separator
and a feedback signal from the valve position limit switch. (See Fig. 1, Pos.6)
Furthermore a 0(4) - 20 mA (equal to 0 - 30 ppm) signal output is available for
driving a recorder or external meter.
2.0 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 suitable
skilled person.
c) The equipment must be connected to the ground according 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) In case of freezing conditions the measuring cell should be emptied complete.
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Issue: 27.05.08 Instruction Manual OMD-2005 Page 5 of 25
3.0 PRINCIPLE OF OPERATION
3.1 Measuring Principle
An optical sensor array 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 linearised output.
If an alarm (works set point 15 ppm) occurs, the two oil alarm relays are activated
after the adjusted time delay.
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.
3.2 Features
•Robust construction
•Automatic voltage selection
•Solid suppression capability
•Low maintenance
•Easy installation
•Constant readiness
•Low spare part stock holding
•Watertight Housing
•Works adjustment
•Easy settings via menu
3.3 Adjustment
The unit is delivered with a works calibration according the IMO-requirements.
The alarm points are set to 15 ppm.
The "Zero" point is also works calibrated and can be re-adjusted on site by using
the programming mode and clean water. See Section 10.4 “Service-Offset”. A
calibration is not permitted. This has to be done according IMO Regulations by
the manufacturer or persons authorized by the manufacturer.
3.4 Displays and Alarms
In the unit are two independent oil alarm circuits available. Both can be set
separately from 1 to 15 ppm. From the manufacturing both alarms are set to
15 ppm (according IMO). The set points can be changed according to the
requirements on site, for example to 10 ppm or 5 ppm. An alarm point setting
above 15 ppm is not possible. The adjustment can be done in the programming
mode as described in Section 10.4.
In this mode also the individual adjustment of the time delays for the alarms and
the possible changing between 0 - 20 mA or 4 - 20 mA output can be done.
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Issue: 27.05.08 Instruction Manual OMD-2005 Page 6 of 25
Both alarm circuits are also related to an alarm LED on the front panel.
In case of malfunction the “System” LED will indicate any type of internal fault of
the unit. This LED is flashing green in normal conditions and is red in alarm
conditions. Also this alarm is related to an relay output.
Additional to the alarm LED's each alarm circuit is equipped with a relay with
potential free alarm contacts. These contacts can be used for external processing
of the signal or for control of further functions.
If a malfunction or failure of the power supply occurs, all 3 relays will switch to
alarm condition.
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Issue: 27.05.08 Instruction Manual OMD-2005 Page 7 of 25
4.0 SPECIFICATION OMD-2005
Range: 0 – 30 ppm, Trend up to 50 ppm
Accuracy According IMO MEPC. 107(49)
Linearity Up to 30 ppm better than ± 2 %
Display Green Graphic Display
Power Supply: 24 V – 240 V AC or DC
Automatic Voltage Selection
Consumption: < 15 VA
Alarm Points 1 + 2: Adjustable between 1 - 15 ppm
(Works adjustment 15 ppm)
Alarm 1 Operating Delay:
(for annunciation purpose) Adjustable between 1 – 540 sec.
(Works adjustment 2 sec)
Alarm 2 Operating Delay:
(for control purposes) Adjustable between 1 – 10 sec.
(Works adjustment 10 sec)
System Fault Alarm: Red LED
Alarm Contact Rating: Potential free 1 pole change over
contacts, 3 A / 240 V
Alarm Indication: Red LED's
Output Signal: 0 – 20 mA or 4 – 20 mA for 0-30 ppm
reversible, ext. Load < 150 Ω
Sample Water Pressure: 0,1 – 10 bar
Sample Flow: Approx. 0,1 - 4 l/min depend. to pressure
Ambient Temperature: + 1 to + 55° C
Sample Water Temperature: + 1 to + 65° C
Roll: Up to 45°
Size (over all): 360 mm W x 240 mm H x 100 mm D
Degree of Protection: IP 65
Weight: 7,3 kg
Pipe Connections: R ¼" Female
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Issue: 27.05.08 Instruction Manual OMD-2005 Page 8 of 25
5.0 CONSTRUCTION
There are 3 main parts which contained in an OMD-2005:
The computer unit is mounted into an epoxy powder painted steel housing
to protect the electronics of the display PCB with the data logger and the
main board PCB with the terminals for external connections.
The measuring cell is built out of an anodized all-aluminium body with inlet
and outlet block in stainless steel. This rugged cell contains the optical
electronic and correspond with the computer unit via a plugged data cable.
The valve assembly contains a special handle to sense the position of the
valve. This assembly is connected to the measuring cell by an easy to
handle fitting to enable the exchange of the cell for frequently adjustment
according the IMO requirements.
All components are mounted to a stainless steel mounting plate for easy wall or
bulkhead installation. It is also possible to split the computer unit from the
measuring cell if the available space is not sufficient. For this version divided
mounting plates are available.
ON
OMD-2005
Oil Monitoring Device
Alarm 1 Alarm 2System
OK
DECKMA HAMBURG
www.deckma.com
SAMPLE 1/4"
CLEAN WATER 1/4"
OUT 1/4"
DECKMA HAMBURG
DH 75450
1 Computer Unit 5 Handle 9 3/2 Way Valve
2 Head Screw 6 Limit Switch 10 Mounting Plate
3 Fitting 7 Spacer 11 Desiccator
4 Measuring Cell 8 Valve Plate 12 Communication Cable
Fig. 1
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Issue: 27.05.08 Instruction Manual OMD-2005 Page 9 of 25
6.0 INSTALLATION
(Refer to Fig. 2 and Fig. 3)
See Section 2 for important notes concerning installation.
The OMD-2005 Monitor should be located as close as possible to the oily water
separator to minimize response delays. According MEPC.107(49) the layout of
the installation should be arranged so that the overall response time (including
the response time of the 15 ppm Bilge Alarm, which is less than 5 s.) between an
effluent discharge from the 15 ppm Bilge Separator exceeding 15 ppm, and the
operation of the Automatic Stopping Device preventing overboard discharge,
should be as short as possible and in any case not more than 20 s.
Mount the OMD-2005 Monitor by means of 6 x M8 screws on to a rigid vertical
surface and preferably with the display panel of the monitor at eye level. For
service and maintenance sufficient space to all sides should be available.
Care must be taken at mounting of the pipes connections to avoid any torsion of
the housing and damage of the instrument.
ON
OMD-2005
Oil Monitoring Device
Alarm 1 Alarm 2System
OK
DECKMA HAMBURG
www.deckma.com
SAMPLE 1/4"
CLEAN WATER 1/4"
OUT 1/4"
DECKMA HAMBURG
DH 75450
Fig. 2
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Issue: 27.05.08 Instruction Manual OMD-2005 Page 10 of 25
7.0 PIPING
(Refer to Fig. 3)
Connect the OMD-2005 Monitor to the sample point of the oily-water separator
outlet and to a source of oil free water employing 10 mm OD copper or stainless
steel pipe. The sample point should be located on a vertical section of the
separator outflow piping to minimize the effects of any entrained air. The tapping
point should be at a level above the outlet of the monitor to ensure the sample
cell is flooded at all times.
If connection to a vertical section of the separator outlet piping is impractical, the
tapping may be made into the side of the horizontal pipe. Avoid top or bottom
entry.
For separator discharge pipes up to 75 mm OD a standard "T"-type junction of
the welded or screwed type is satisfactory for the tapping point. For the separator
discharge pipes of 80 mm OD and above a sample probe should be employed
which protrudes into the discharge piping by approx. 25 % of the ID of the pipe.
Separator
Outlet Separator
Clean Water
Supply (Option)
Outlet
*
10 X 1mm
Copper Tube
Vacuum breaker
Overboard discharge
Pressure relief valve
(if required)
To Bilge
*
Inlet & Outlet connections R1/4" Female
Fig. 3
To BilgeTo Bilge
Recirculating
Facilities
Automatic
Stopping Device
ON
OMD-2005
Oil Monitoring Device
Alarm 1 Alarm 2 System
OK
DECKMA HAMBURG
www.deckma.com
DECKMA HAMBURG
DH 75450
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