Deckma Hamburg OMD-2008 Manuel utilisateur
I N S T R U C T I O N M A N U A L
15ppm Bilge Alarm
OMD-2008
Standard Version
and Versions with
Electric Valve (EV)
Flow Control (FC)
Manual Cleaning Unit (MCU)
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
Internet: www.deckma.com eMail: [email protected]
DECKMA HAMBURG GmbH
Issue: 25.09.2015 preliminaryInstruction Manual OMD-2008 (All Versions) Page 1 of 28
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.
It is very important to correctly identify the Type and Version of the instrument for
technical support, or for ordering spare parts. Please include instrument type,
Version, and serial number, and if possible instrument date of commissioning into
any communication.
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-2008 EVFC is designed in that way, that only the measuring cell needs
to be changed, as this unit carries the Calibration Certificate. 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 be made
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.
DECKMA HAMBURG GmbH
Issue: 25.09.2015 preliminaryInstruction Manual OMD-2008 (All Versions) Page 2 of 28
Warranty
Our warranty terms are12 months after installation but maximum 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
DECKMA HAMBURG GmbH
Issue: 25.09.2015 preliminaryInstruction Manual OMD-2008 (All Versions) Page 3 of 28
Contents
1 Introduction ............................................................................................................. 4
1.1 General ..................................................................................................................... 4
1.2 Instrument Versions and Options .............................................................................. 4
2 Important Notes ...................................................................................................... 6
3 Principle of operation ............................................................................................. 7
3.1 Measuring Principle ................................................................................................... 7
3.2 Adjustment ................................................................................................................ 7
3.3 Displays and Alarms ................................................................................................. 7
3.4 Electronic record ....................................................................................................... 8
4 Specifications ......................................................................................................... 9
5 Construction ......................................................................................................... 11
5.1 Overview ................................................................................................................. 11
5.2 Computer Unit ......................................................................................................... 11
5.3 Measuring Cell ........................................................................................................ 11
5.4 Other devices .......................................................................................................... 12
6 Installation ............................................................................................................. 14
7 Piping ..................................................................................................................... 16
8 Wiring ..................................................................................................................... 18
8.1 Typical Control System ........................................................................................... 20
8.2 Remote EV Electric Valve control ............................................................................ 20
9 Power Supply ........................................................................................................ 20
10 Commissioning .................................................................................................. 21
10.1 Electrical and Piping ................................................................................................ 21
10.2 Flow rate adjustment ............................................................................................... 21
10.3 Functional Tests ...................................................................................................... 22
10.4 Programming Mode ................................................................................................. 24
11 Operating instructions ...................................................................................... 29
11.1 Operator Notes........................................................................................................ 29
12 Operator Maintenance ....................................................................................... 30
12.1 Manual Cell Clean Unit (MCU) ................................................................................ 31
13 Fault finding ....................................................................................................... 34
13.1 Memory Card .......................................................................................................... 37
14 Calibration .......................................................................................................... 37
14.1 Calibration and repeatability check .......................................................................... 37
14.2 Function Test at Classification Survey and Port State Control ................................. 38
15 Spare Parts......................................................................................................... 39
15.1 Recommended On Board Spares ........................................................................... 39
16 REMARKS .......................................................................................................... 40
DECKMA HAMBURG GmbH
Issue: 25.09.2015 preliminaryInstruction Manual OMD-2008 (All Versions) Page 4 of 28
1 Introduction
1.1 General
The OMD-2008 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.
Instruments with maximum Alarm set-points of 10 ppm or 5 ppm respectively are
available.
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.
For the data logging function the unit requires a status input from the separator.
A 0(4) - 20 mA (equal to 0 - 30 ppm) signal output is available for driving a
recorder or external meter.
1.2 Instrument Versions and Options
The OMD-2008 is available in different versions. It may be equipped with an
electric switchover valve for clean water usage, and a Flow Sensor. A Manual
Cleaning Unit (MCU) is available as an option. Different instrument versions are
covered in this document. Please verify instrument version on site and refer to
the relevant sections of this manual.
1.2.1 FC (Flow Control)
Some OMD-2008 instruments are equipped with a Flow Sensor. The Flow
Sensor is positioned in the Drain line of the Measuring Cell. If the flow rate
through the Measuring Cell is too low, or if the sample is not flowing at all, the
Instrument will go to Alarm condition and issue a “Status: Flow?” message.
OMD-2008 FC instruments have a special interface for the Flow Sensor, so that
the current flow rate can be displayed.
It is possible to have a Flow Switch (similar to the Flow Sensor, but with a simple
ON/OFF output) connected to all versions of OMD-2008.
DECKMA HAMBURG GmbH
Issue: 25.09.2015 preliminaryInstruction Manual OMD-2008 (All Versions) Page 5 of 28
1.2.2 EV (Electric clean water Valve)
OMD-2008 EV instruments are equipped with an electric switchover valve for the
clean water stream. The valve can be controlled via the menus, or remotely using
the control input.
1.2.3 MCU (Manual Cleaning Unit)
Optionally the instruments can be fitted with a Manual Cleaning Unit. The Manual
Cleaning Unit allows to clean the sample glass tube without opening the
Measuring Cell Head Screw, and without interrupting the normal sample flow.
Maintenance is made easier with the MCU. Please note that operating the MCU
may set the instrument to alarm condition for a few seconds.
DECKMA HAMBURG GmbH
Issue: 25.09.2015 preliminaryInstruction Manual OMD-2008 (All Versions) Page 6 of 28
2 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
completely.
DECKMA HAMBURG GmbH
Issue: 25.09.2015 preliminaryInstruction Manual OMD-2008 (All Versions) Page 7 of 28
3 Principle of operation
3.1 Measuring Principle
An optical sensor array measures a combination of light scattered and absorbed
by oil droplets in the sample stream. The sensor signals are processed by a
microprocessor to produce linearized output.
If an alarm (works set point 15 ppm, or 10 ppm or 5 ppm respectively) 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 Adjustment
The unit is delivered with a works calibration according the IMO-requirements.
The alarm points are set to 15 ppm (or 10 ppm, or 5 ppm for certain versions).
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 “Settings-Offset”.
Calibration of the instrument is not permitted. According to IMO Regulations a
calibration check has to be done by the manufacturer or persons authorized by
the manufacturer. The recommended way to ensure a properly calibrated
Measuring Cell on board is to exchange the Measuring Cell.
3.3 Displays and Alarms
In the unit there 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. Instrument versions with limited alarm setpoint
range (10ppm, or 5ppm) are available. This alarm setpoint limit can not be
changed.
Adjustment of the alarm setpoints 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 can be done.
Both alarm circuits are also related to an alarm LED on the front panel.
DECKMA HAMBURG GmbH
Issue: 25.09.2015 preliminaryInstruction Manual OMD-2008 (All Versions) Page 8 of 28
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.
Additional to the alarm LEDs each alarm circuit is equipped with a relay with
potential free switchover 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 three relays (both alarm
relays and the SYSTEMFAULT relay) will switch to alarm condition.
3.4 Electronic record
The OMD-2008 keeps an electronic record. The recorded data can be viewed at
the instrument at any time. Browsing the data does not interfere with the
measurement or instrument operation. Data is stored in excess of 18 Months.
DECKMA HAMBURG GmbH
Issue: 25.09.2015 preliminaryInstruction Manual OMD-2008 (All Versions) Page 9 of 28
4 Specifications
Range: 0 – 30 ppm, Trend indication 50ppm
Accuracy According IMO MEPC. 107(49)
Linearity Up to 30 ppm better than ± 2 %
Display Yellow Graphic Display
Power Supply: 24 V - 240V AC or DC
Automatic Voltage selection
Consumption: < 10 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 LEDs
Output Signal: 0 – 20 mA or 4 – 20 selectable
ext. Load < 150
Sample Water Pressure: 0,1 – 10 bar
Sample Flow: Approx. 0,1 - 3 l/min depending on
pressure
Ambient Temperature: + 1 to + 55° C
Sample Water
Temperature:
+ 1 to + 65° C
Roll: Up to 45°
Degree of Protection: IP 65
Pipe Connections: for 6mm OD Cu or SS pipe
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