Explosion

[Loki9]

Wouldn't it be a good idea to put a relay switch in the starter circuit that is activated by the blower switch? This way, if the blower is not on, the starter switch does nothing. I'm surprised this isn't a standard requirement.

[JOHN COOKSON]

The Nose That Knows

Wouldn't it be a good idea to put a relay switch in the starter circuit that is activated by the blower switch? This way, if the blower is not on, the starter switch does nothing. I'm surprised this isn't a standard requirement.

Also it would be a good idea to put a relay on your nose because if you don't sniff the blower exhaust and\or check the engine\bilge area for fumes and there is an invertant fuel leak it will go BOOM despite the blower.
Sniffing for gas fumes before each engine start is SOP (standard operating procedure) on my boat.

TRUE GRIT

[ndutton]

Don't forget the Xintex fume sniffer. Mine is interfaced with the blower, it automatically evacuates any combustible fumes detected by the sensor. I keep it armed at all times.

[joe_db]

Here is a danger not realized by everyone:
Gasoline does a fair job numbing your sense of smell. I once read of an old trick used my people that had to haul dead bodies around that was to rub gasoline under your nose.
So.....when you fill your boat with gas you will smell gas. If even a drop spills on you the smell is wherever you go too. It will not be obvious there are fumes in the boat because you smell gas anyway. When my fill hose elbow split I had filled the boat and obviously smelled gas from that and my hand. I was running the blower and thought maybe-sorta-kinda there was an odor. I put my hands around the vent and really smelled the output. It seemed to smell like gas for sure so I checked the bilge. About 2 gallons in the tank and three in the bilge

[JOHN COOKSON]

was running the blower and thought maybe-sorta-kinda there was an odor. I put my hands around the vent and really smelled the output. It seemed to smell like gas for sure so I checked the bilge. :

More better to stick your nose almost in the vent and suck in a good lung full. This is what I do. With just a sniff you could miss something important.

TRUE GRIT

[GregH]

Don't forget the Xintex fume sniffer. Mine is interfaced with the blower, it automatically evacuates any combustible fumes detected by the sensor. I keep it armed at all times.

I will have to look into this idea when I install mine. How do you have it wired into the blower circuit?

[ndutton]

I will have to look into this idea when I install mine. How do you have it wired into the blower circuit?

The Xintex MB-1-R has a relay specifically for blower interface (the 'B' in the model number = 'blower'). I wired the relay parallel to the blower switch, power source for both the normal switch and the relay is the same as the detector, that is, on all the time.

If you are thinking that way be sure to get the correct model.

edit:
The power source for my CNG solenoid valve is the same as the Xintex. In no way can I use cooking fuel without the sniffer armed.

[Oldlaxer1]

Pretty sure an Atomic 4 didn't cause this fire...

http://www.yachtsalvage.com/Listings/YS160078.htm#photos