Deckma: Omd11 Manual
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.
Critical Manual Excerpt: Pre-alarm triggers at 2.5 %/m. Main Alarm triggers at 5.0 %/m. (These values are adjustable but rarely changed due to class approval).
A central blower draws sample air from the engine through pipes to the measuring head. The Deckma OMD-11 manual contains a strict warning: The blower must create a negative pressure of approximately 200 mm water column. Any leak in the sampling tube results in false low readings.
| Component | Function | Common Manual Warning | | :--- | :--- | :--- | | Central Unit | Data processing & UI | Do not open while powered. | | Measuring Head | Optical detection | Clean lens annually. | | Blower Motor | Air aspiration | Check carbon brushes (if type M-4) every 10k hours. | deckma omd11 manual
Search the model name "DeckMa OMD11 manual" on the manufacturer's site or major electronics manual repositories for the complete user manual, wiring diagrams, specs, and fuse types.
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The Deckma OMD-11 is an oil-in-water monitor primarily used as a 15 ppm bilge alarm on maritime vessels. While it is an older model replaced by newer versions like the OMD-24, it remains widely supported for servicing and calibration. Key Specifications
Operating Range: 0–30 ppm (with a trend indication up to 50 ppm). To fully appreciate the OMD-11 manual, one must
Accuracy: Complies with IMO Resolution MEPC. 60 (33) requirements.
Power Supply: 24V AC/DC (standard), with others available on request.
Alarms: Two independent alarm circuits, factory-set at 15 ppm but adjustable between 2–15 ppm.
Response Time: Adjustable operating delay between 2 and 20 seconds. Operating Principle OMD-11 Oil-in-Water Monitor Manual | PDF | Relay - Scribd Critical Manual Excerpt: Pre-alarm triggers at 2
This is where ignoring the manual leads to catastrophic false alarms or, worse, failure to detect an actual crankcase explosion.
The Deckma OMD-11 manual has explicit "DANGER" warnings.
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:
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).