Deckma Omd11 Manual -

The Deckma OMD-11 is a 15 ppm bilge alarm monitor designed to accurately measure oil content in water, primarily for maritime use with oily water separators. While it is an older model replaced by newer units like the OMD-24 or OMD-2008, it remains widely used and fully supported for calibration and repairs. Core Capabilities

Measurement Accuracy: It monitors oil content from 0 to 30 ppm, with a trend indication extending up to 50 ppm. IMO Compliance

: The unit is designed to meet International Maritime Organization (IMO) resolution MEPC.60 (33) standards. Advanced Solids Suppression: A standout feature of the

is its ability to distinguish between actual oil particles and solids or water turbidity. This significantly reduces false alarms caused by non-oil contaminants like black iron oxide.

Dual Alarms: Features two independent alarm circuits, factory-set at 15 ppm but adjustable between 2 and 15 ppm. Technical Specifications Power Supply 24V AC/DC (standard) Output Signal 0(4) - 20 mA for external recorders or meters Protection Class IP 65 (watertight alloy enclosure) Sample Temp +1°C to +60°C Dimensions 175 x 190 x 220 mm; Weight: 3.5 kg Installation & Maintenance Highlights

Proximity: The manual mandates installing the monitor as close as possible to the oily water separator. The distance must not exceed 8 metres to ensure a response time under 20 seconds, as required by IMO regulations.

Calibration: The "Zero" point can be re-adjusted on-site using clean water via front panel buttons. However, full calibration must be performed by the manufacturer or an authorized provider like Mackay Marine during IOPP certificate renewals.

Serviceability: The unit uses plug-in technology for its optical components and circuit boards, making component replacement relatively straightforward. deckma omd11 manual

For full operational details and wiring diagrams, you can refer to the Instruction Manual via Scribd or Yumpu.

Deckma OMD-11 is a legacy bilge alarm unit designed to monitor oil-in-water concentrations in marine environments, specifically to ensure compliance with IMO Resolution MEPC.60(33) standards. Core Function & Features

The OMD-11 uses a light-scattering measurement principle to detect oil droplets in a sample stream. Key technical highlights from the Solids Suppression

: Designed to minimize false readings caused by non-oil contaminants like iron oxide, showing only 2 ppm for substances that older monitors might misread as 15 ppm. Dual Alarms

: Features two independent alarm circuits factory-set to 15 ppm, though they are field-adjustable between 2 and 15 ppm via front-panel buttons. Output Signals

: Provides a 0(4)–20 mA signal for external recording or remote metering. Compact Build

: The unit is IP 65 rated for protection against water jets and dust, measuring approximately Technical Specifications Specification Measurement Range 0 – 30 ppm (Trend indication up to 50 ppm) plus or minus 5 ppm around the 15 ppm threshold per IMO standards Power Supply 24V AC/DC (standard); other voltages available on request Sample Temperature Operates between positive 1 raised to the composed with power 60 raised to the composed with power Response Time Adjustable alarm delays between 2 and 20 seconds Operational Guidelines Installation The Deckma OMD-11 is a 15 ppm bilge

: The unit should be mounted near the oily-water separator to minimize lag time. It requires a clean water source for flushing and mm OD piping for sample connections. Maintenance : Regular cleaning of the measuring cell is critical. The instruction manual

recommends using a dedicated cell cleaning brush and keeping spare desiccators and O-rings on hand. Calibration Check

: Proper function is verified using a Formazin polymer reference standard (typically 4000 FTU diluted to specific requirements) to ensure the monitor remains within the required accuracy limits. Shivtech Marine Control Systems & Services calibration kit contents INSTRUCTION MANUAL DECKMA HAMBURG Gmbh - YUMPU

Fault 5: Blower motor running but no flow

  • Manual Fix: The rubber diaphragm in the blower unit is torn or the impeller is loose. This is described in the exploded-view diagram on page 24 of the manual.

Training Your Crew Using the Deckma OMD11 Manual

A manual is only useful if the crew can apply it. Create a "One-Page Emergency Card" based on the manual’s Section 11: Emergency Bypass Procedure.

Drill Scenario: Crankcase oil mist alarm sounds during maneuver.

From the Manual:

  1. Do not stop the engine immediately – dangerous propeller pitch situation.
  2. Press Alarm Acknowledge (silences horn for 30 seconds).
  3. Reduce engine load below 50%.
  4. If alarm persists after 60 seconds, stop engine and open indicator cocks.
  5. Bypass is only allowed if manual section 11.3 conditions are met (visual inspection of crankcase via drain plug – no smoke).

Post this drill summary in the ECR. The full manual remains the reference for investigation (why did it alarm?). Fault 5: Blower motor running but no flow

📘 Pro Tips for Using the OMD-11 Manual Effectively

  • Keep the latest revision – Deckma periodically updates the manual (e.g., for newer firmware). Check their website or ask your supplier.
  • Use the maintenance schedule table – It lists daily, monthly, and yearly tasks. Don’t skip the quarterly optical cell cleaning — it’s the #1 cause of false alarms.
  • Combine with the engine manual – The OMD-11 manual refers to engine alarm systems; you’ll need the engine’s wiring schematic for full integration.
  • Download the PDF – The searchable version saves hours over paper when troubleshooting.

Specific Sections to Look For in the Manual

  • Technical Specifications: Look for details on dimensions, power requirements, and performance metrics.
  • Installation Guide: This section should provide step-by-step instructions on setting up the OMD11.
  • Operating Instructions: Understand how to start, adjust, and monitor the device.
  • Maintenance Schedule: Recommendations on how often to perform maintenance tasks.
  • Troubleshooting Guide: Helps in diagnosing and fixing common problems.
  • Parts Diagram: Useful for identifying and ordering replacement parts.

Chapter 4: Navigating the Keypad – A Walkthrough of the Manual’s Operating Instructions

The membrane keypad is the user interface. The Deckma OMD-11 manual details a simple yet robust menu structure.

3. The Aspiration System (Blower Unit)

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. |

General Overview

  1. Introduction: The Deckma OMD11 is designed for a particular application, likely related to water quality management. Understanding its intended use is crucial.

  2. Safety Precautions: Always follow safety guidelines to prevent injury or damage to the device.

  3. Installation:

    • Ensure the device is installed in a suitable location.
    • Follow the recommended procedures for setup, which may include connecting to a power source, water lines, and ensuring proper grounding.

  4. Operation:

    • Familiarize yourself with the control panel and settings.
    • Understand the normal operating parameters (e.g., pressure, flow rate, pH levels).

  5. Maintenance:

    • Regular maintenance is key to extending the life of the device and ensuring it operates efficiently.
    • This may include cleaning, replacing filters, and checking for wear and tear.

  6. Troubleshooting:

    • The manual should have a section on common issues, causes, and solutions.
    • Keep a log of maintenance and issues for future reference.