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11. OMD-24 Series Operating instructions
When oily water flows through the instrument the oil content will be measured and the
display will show the actual value of oil content.
If the oil concentration exceeds the adjusted threshold (works adjustment 15 ppm), the
alarm indicator 1 will be illuminated in intervals during the selected time delay before it
changes to steady light and the associated alarm relay will operate. Accordingly, also the
alarm indicator 2 will be illuminated and its associated alarm relay will take the
appropriate shut down action.
Whenever the instrument is switched over to FW, it will be in alarm condition as required
by IMO.
Additionally, alarms and the separator status will be recorded in data logger to IMO
Requirement every 15 seconds.
To switch over from sample water to clean water is depending on the instrument.
The OMD-24 is equipped with two independent valves for sample water and clean water.
Valve handles are mechanically interlocked.
Do not use excessive force to operate the handles. The OMD-24 will only allow overboard
discharge in Normal Operation setting of both valve handles.
Figure 24. Operating Instructions OMD-24
The OMD-24 EV units have an electric switchover valve to switch over from sample water
to clean water. Any operation is triggered via the front panel, or triggered remotely. It will
only allow overboard discharge in sample condition and has an external dry contact (see
terminals 19&20). The Units will be in alarm condition, if fresh water is opened.
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