Paulg25
Well-Known Member
You don't have to use them that way. You can just use one as a timer for any 12v accessory.
Keeping blower turning when engine turned off
- Thread starter Vicarage
- Start date
coopec
N/A
Good point!
Last edited:
pcatterall
Well-Known Member
Any value in a powerful blower in the med? As stated its a big lump of hot iron and the sooner that heat is got out then the sooner the adjacent accommodation can cool down?
scottie
Well-Known Member
It’s there because it part of the building regulations based on removing fumes to prevent explosions on starting and is a relic of us boats blowing up
Beneteau381
Well-Known Member
Thats why I sometimes leave my "ignition" on after a long run. The infrastructure gets mighty hot in the Med and Portugal.
Zing
Well-Known Member
I wouldn’t bother unless it’s a petrol engine, where it might be a safety precaution. A Diesel engine shouldn’t smell and if it does, fix it. Also the heat removed from air is tiny compared to the stored heat in the block, so the fan needs to be on a very long time to make a difference - your battery may not be happy with that. My fans have a ridiculous ampage.
pvb
Well-Known Member
In a diesel-engined boat??
Mistroma
Well-Known Member
I think most AWBs have them as standard. Mine certainly runs only when the engine is turned on and stops immediately. I have never felt the urge to fit a delay because it would need to run for a such long time with the engine stopped.
Heat most certainly is a problem for us in Greece. We try to avoid motoring too much in the late afternoon, not a huge problem because of wind patterns. Our normal procedure when anchoring is to open the aft cabin hatches, the rear engine panel and flip the main engine cover open. It is a slight nuisance if you need to go below but just a matter of pulling a line to pull the steps into place and open the cover again afterwards.
Leaving the hatch open makes a huge difference to the internal temperature in an hour or two. I haven't noticed any fumes from the engine when opening the hatch. A hot engine is the last thing you want when temp. is in the 30s at night.
scottie
Well-Known Member
Fraid so
Which regulatory body is going to remove a safety regulation even if it superfluous?
NormanS
Well-Known Member
This would only apply to marina dwellers. If the mains charger has been working hard, and the batteries have been gassing (hydrogen), there is a slight possibility that a spark (which shouldn't happen) could cause an explosion. Having a (flameproof) extraction fan coupled to the battery compartment, and using it for a few minutes before starting up, would make sense.
Mistroma
Well-Known Member
I think Jeanneau use the Rule 240 and haven't see a claim that it doesn't spark. Luckily my batteries are in a different location, naturally vented until charging and then via blower blower with 2 speeds depending on charge voltage reached.
Probably mostly older boats with a battery inside the engine compartment but a good point to check. Not just mains chargers as large solar panels can put in a fair charge.
