Note: This document is a comprehensive reference guide compiled from general technical knowledge of the Deckma OMD-11 system. For official certification and specific calibration data, always consult the original manufacturer's manual and manuals provided with your specific serial number.


Chapter 1: Historical Context – Why the OMD-11 Replaced the OMD-2

To fully appreciate the OMD-11 manual, one must understand its evolution. The predecessor, the OMD-2, was a purely pneumatic system using a rotating disc and measuring tube. While effective, it was prone to clogging and mechanical wear.

The OMD-11 introduced microprocessor-controlled optical measurement. According to the Deckma OMD-11 manual, this system uses a high-intensity infrared LED and a photo receiver. There is no moving parts in the measuring head, drastically reducing maintenance. The manual emphasizes that the system continuously samples mist from up to 15 measuring points (cylinder crankcases and camshaft drives), sequentially scanning each point every few seconds.


3.2 Monitoring Mode

  1. Once zeroed, open the sample line from the Oily Water Separator discharge.
  2. The display will show the real-time oil content.
  3. If the reading is < 15 ppm: The "Overboard Discharge" valve (usually controlled by the OWS) remains open.
  4. If the reading is > 15 ppm:
    • The audible and visual alarms activate.
    • The OWS control system will automatically close the overboard discharge valve and redirect the flow to the slop tank (recirculation).

Fault 3: Intermittent Pre-Alarms – No visible mist.

3. Alarm Setpoints & Time Delays (Chapter 4)

The manual details the two critical alarm thresholds:

Warning: The manual explicitly states that altering these thresholds without class approval voids your safety certification.

Chapter 3: The Holy Grail – Accessing the Deckma OMD-11 Manual PDF

If you are a Chief Engineer, the physical binder should be in the ship’s library. However, in a digital age, the Deckma OMD-11 manual PDF is the most searched document. Here is where to find it legally:

  1. Deckma GmbH Official Website: Navigate to the "Service/Downloads" section. You will need the serial number of your unit.
  2. Ship’s Technical Library USB: Most new vessels have a "Vendor Manuals" folder.
  3. DNV or Class Society Portal: If the vessel is under survey, class societies often retain electronic copies.

Warning to the reader: Do not use a generic manual from the internet unless the revision number matches your hardware (Rev. 4.2 versus Rev. 5.0 have different service menus).


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Note: This document is a comprehensive reference guide compiled from general technical knowledge of the Deckma OMD-11 system. For official certification and specific calibration data, always consult the original manufacturer's manual and manuals provided with your specific serial number.


Chapter 1: Historical Context – Why the OMD-11 Replaced the OMD-2

To fully appreciate the OMD-11 manual, one must understand its evolution. The predecessor, the OMD-2, was a purely pneumatic system using a rotating disc and measuring tube. While effective, it was prone to clogging and mechanical wear. deckma omd11 manual

The OMD-11 introduced microprocessor-controlled optical measurement. According to the Deckma OMD-11 manual, this system uses a high-intensity infrared LED and a photo receiver. There is no moving parts in the measuring head, drastically reducing maintenance. The manual emphasizes that the system continuously samples mist from up to 15 measuring points (cylinder crankcases and camshaft drives), sequentially scanning each point every few seconds. Note: This document is a comprehensive reference guide


3.2 Monitoring Mode

  1. Once zeroed, open the sample line from the Oily Water Separator discharge.
  2. The display will show the real-time oil content.
  3. If the reading is < 15 ppm: The "Overboard Discharge" valve (usually controlled by the OWS) remains open.
  4. If the reading is > 15 ppm:
    • The audible and visual alarms activate.
    • The OWS control system will automatically close the overboard discharge valve and redirect the flow to the slop tank (recirculation).

Fault 3: Intermittent Pre-Alarms – No visible mist.

3. Alarm Setpoints & Time Delays (Chapter 4)

The manual details the two critical alarm thresholds: Chapter 1: Historical Context – Why the OMD-11

Warning: The manual explicitly states that altering these thresholds without class approval voids your safety certification.

Chapter 3: The Holy Grail – Accessing the Deckma OMD-11 Manual PDF

If you are a Chief Engineer, the physical binder should be in the ship’s library. However, in a digital age, the Deckma OMD-11 manual PDF is the most searched document. Here is where to find it legally:

  1. Deckma GmbH Official Website: Navigate to the "Service/Downloads" section. You will need the serial number of your unit.
  2. Ship’s Technical Library USB: Most new vessels have a "Vendor Manuals" folder.
  3. DNV or Class Society Portal: If the vessel is under survey, class societies often retain electronic copies.

Warning to the reader: Do not use a generic manual from the internet unless the revision number matches your hardware (Rev. 4.2 versus Rev. 5.0 have different service menus).


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