As vessels continue to increase in both power and size, proper engine room ventilation is critical. Delta T Systems is the choice for many of the new boat builders. Proper ventilation not only is critical to maintaining the life of your engine, generator and vessel equipment, but is also a major factor in engine efficiency resulting in reduced fuel consumption. Gillen Yacht Services, works directly with Delta T Systems engineers to both service existing systems and retrofit new solutions in both Ventilation and elimination of moisture in engine rooms.
Contact usFor this newsletter, to keep the engine room ventilation theme going, I have decided to talk about one of the least exciting systems on your boat- Engine room ventilation. Engine room ventilation serves two purposes. The first is to supply fresh air to the main engines and generators they require to operate, and second is to help keep the machinery spaces cool. On most modern, high horsepower yachts, the air required to run the engines is significant. Most boats have both intake and exhaust fans.
For the most part, maintenance of these systems is minimal. Failures are normally due to fans becoming corroded or accumulating debris, which causes an imbalance that could lead to motors premature failure. Servicing is often overlooked due to how difficult the fans can be to access. On larger boats that require a frequency drive to operate the motor, it is important the drive is working properly. Basic frequency drive preventative maintenance is performed by simply keeping the drive clean and cool, assuring the connections are tight and of course keep the unit dry. Any water spray needs to be addressed, especially if the spray is saltwater. It is a good idea to spray the wire connections with a product like Boshield (this is also recommended for the drives operating other equipment as well, such as air conditioning units). For most large electric motors / compressors the GYS, electrical department utilizes frequency drives, the advantages of them are significant.
The air intake component of the ventilation system is where we have witnessed some of the biggest issues impacting engine room corrosion and main engine performance. On countless pre-purchase sea trial surveys in the right sea conditions, we see saltwater pouring into the engine room resulting in substantial corrosion damage. In addition, the high temperature is evident due to the paint color discoloration of engine air intakes, hydraulic tanks, chiller compressors and other engine room systems.
Fortunately, there are remedies available. Delta “T” manufactures a remarkable air intake system called the “Moisture Eliminator” that can be retrofitted on most vessels. Many premier boat builders now include Delta “T” moisture eliminators and fan systems as original equipment such as Viking, Grand Banks, Horizon, just to name a few.
It is important to remember that any saltwater spray, leaks, or drips from any source should be addressed immediately after a trip. We like to rinse using Salt Away, then drying the space with the engine room fans at max setting.
Call us for advice on what you can or cannot spray freshwater or Salt Away on. Or for more specifics on how we can help you keep your engine room and its equipment in top shape contact us.