Originally Posted by djmarchand
I have seen a few marine engine rooms with Fireboy Halon systems installed, including my boat. AFAIK
, it is SOP to set up the system so that the engine stops when the Fireboy is triggered. Probably the main reason is to keep the diesel from ingesting the Halon and exhausting it, thereby keeping it from doing its job.
Can a diesel engine run on Halon in the absence of diesel, if the Fireboy system has triggered the stop solenoid? I really doubt that. That is why Halon, or modern day equivalents are used- it puts out fires by depriving them of oxygen. It doesn't burn itself.
How reliable are the Fireboy engine shutdown systems? Well, I suppose the Cummins type of energize to run is more reliable than the Yanmar type of energize to stop. No matter how the Cummins type loses its electrical energization- an electrical failure due to the fire or the Fireboy doing it, the engine will stop. But I will be that the difference is not material.
So, hook up your Fireboy to the engine stop system.
Not to hijack the thread but I also have Cummins with the "energized on"
And fire boy system.
Anyone ever have their fuel solenoid fail?
I always liked my detroits, on previous boat, for that reason they were energize to shut down.
Just another thing to go wrong, when picking up my new to me boat starboard fuel solenoid had a loose wire and shut down. Fortunately only took me a few mins to diagnose and back on the trail.
I've thought about carrying a spare but cummins told mr they sell very few of them.