On Thu, 4/28/16, 'Bill & Judy Rouse' yahoogroups@... [amelyachtowners] <amelyachtowners@...> wrote:

Subject: Re: [Amel Yacht Owners] Engine room temperature and cooling
To: amelyachtowners@...
Date: Thursday, April 28, 2016, 7:49 AM


 









Alex,
I am not sure, and I have a different engine
and a later model SM.
Possibly something has changed on your boat
from how it was originally. Did you see Joel's posting
that the 24VDC fans were connected to the 24VDC
alternator?
BTW, this probably has nothing to do with any
of this, but it is possible to connect two 12VDC fans in
series to 24VDC.
Bill Rouse

BeBe Amel 53 #387

Sent from my tablet

+1832-380-4970 USA Voice Mail
On Apr 28, 2016 7:59
AM, "Alexandre Uster von Baar uster@...
[amelyachtowners]" <amelyachtowners@...>
wrote:















 









Good Bill,



More precisely, my question is why the 24 volt Fans are
connected to a 12 Volt circuit?

The manual confirms it: “both 24 V devices work
intentionally on 12 V deliver by the main engine
alternator”.

http://nikimat.com/engine_room_fans/engine_room_fan_15.jpg



To make sure it was the fan being defective, I started the
Volvo and measured 13 volt (on the wires going to the fan).




Thanks again! Sincerely, Alexandre



--------------------------------------------

On Wed, 4/27/16, 'Bill & Judy Rouse' yahoogroups@...
[amelyachtowners] <amelyachtowners@...>
wrote:



Subject: Re: [Amel Yacht Owners] Engine room temperature and
cooling

To: amelyachtowners@...

Date: Wednesday, April 27, 2016, 6:22 PM





 



















Alex,

It receives it's power from the 12VDC

Starting circuit.

Bill Rouse



BeBe Amel 53 #387



Sent from my tablet



+1832-380-4970 USA Voice
Mail

On Apr 27, 2016 7:14 PM,

"Alexandre Uster von Baar uster@...

[amelyachtowners]" <amelyachtowners@...>

wrote:































 



















Update:







Looking at the owner manual, I just saw the engine, in

addition to the intake fan, has also an extraction fan
FASCO

24 Volt 2807-513-122 --- 93004-2815



http://nikimat.com/engine_room_fans.html







Engine on, I noted it was not working and likely the
cause

of the warmer engine room.







With a Volt Meter I checked current was going to it and
it

did: measured 13 Volt.



It seems normal as the owner manual says so…







Does someone know why this “24 Volt” FASCO
2807-513-122

--- 93004-2815 is connected to a 12 volt connection?







Olivier?



Joel?



Bill? Anyone?







Sincerely, Alexandre



SM2K #289 NIKIMAT



Private Slip, Marina Puerto Bahia, Samana, Dominican

Republic







--------------------------------------------



On Wed, 4/27/16, Alexandre Uster von Baar <uster@...>

wrote:







Subject: [Amel Yacht Owners] Engine room temperature and

cooling



To: amelyachtowners@...



Date: Wednesday, April 27, 2016, 10:54 AM











Good morning,







May be I am a control freak, but when using the engine

or



genset I monitor the temperature of the engine

compartment



via a wireless temperature sensor. 







I rarely use the engine for more than an hour at the

time



(mostly to leave and come back to a marina), but in a

few



occasions had to motor for 10 or more hours.



The temperature in the engine room, will gradually

increase;



when it reaches 47*C I open the engine hatch (sea

condition



permitting obviously) for 1/2 hour to cool it down to

45*C



and so on. 



“My” reason to do this is because of component from

the



generator melting at 50*C. 







Note:  the “suction” (intake) 24 Volt Jabsco



35440-0010 250 CFM Blower Fan is working (starts when

engine



is ON). 







Is there may be an air intake our outtake that could be



partially blocked? 



Is there another fan I am forgetting about? 











Other note: when using the Generator, it rarely goes

over



46*C after 2.5 hour use (its fan is also working).







Sincerely, Alexandre



SM2K #289 NIKIMAT



Private Slip, Marina Puerto Bahia, Samana, Dominican



Republic

































































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