How do you size a bilge blower?
The size you need is determined by the volume of your engine compartment (see below). The best plan is usually to have two blowers, one to blow air out and the other to suck outside air into the engine space. However great care must be taken that the outside air intake is free of CO and other fumes.
How long can you run a bilge blower?
Depending on the type of bilge blower you have on your boat. Ordinary bilge blowers are not built to operate continuously. So you can burn them out! However, you should run them for at least four minutes to ventilate the bilge before starting the engine.
How long should you run your boat’s bilge blower before starting your gasoline engine?
If your boat is equipped with a power ventilation system (exhaust blower), turn it on for at least four minutes before starting your engine. This will help eliminate fuel vapors in the bilge. Before starting the engine, sniff the bilge and engine compartment for fuel vapors.
Why it is necessary to ventilate the bilge?
That’s because fumes from your engine can collect in the bilge creating the potential for a powerful and dangerous explosion. The danger is so great that all boats built after 1940 and powered by gasoline are required by law to have a ventilation system. There are two types of ventilation systems: natural and powered.
What type of boat requires navigation lights?
Powered recreational vessels, including sailboats while under power, are required to use the following navigation lights while operating between sunset and sunrise or in periods of restricted visibility.
Where do you put a bilge blower?
Registered. Typical the blower (an “explosion proof” or “ignition proof” rated blower) is usually mounted in the engine bay with an intake duct leading down to the bilge spaces, to to the bottom of the engine compartment. That way it is also just a short run for the exhaust.
When should a blower be operated on a boat?
It is recommended that you use a blower at least 4 minutes before you ever start the engine, and especially after fueling.
How do you ventilate a bilge?
A natural ventilation system consists of a minimum of two ventilator ducts—an intake duct to bring fresh air into the bilge and an exhaust duct to remove fumes from the bilge. Air moves through the ducts as the boat is in motion. Each duct is also fitted with a cowl, or a hood-shaped covering, to help increase airflow.
Why should a boat’s gas tank never be completely filled?
It’s important to never fill the tank of your boat beyond 90% full. This leaves room for gas to expand and avoids the potential for overflow. Ensure that all air vents and valves to the gas tank are open.