DECKMA HAMBURG GmbH
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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