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


Bill & Judy Rouse <yahoogroups@...>
 

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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