Empathy List Archives

J

jag@vcn.bc.ca

Thu, Jul 27, 2006 4:44 AM

I am putting a muffin fan behind my Norcold DE-540. It is a simple matter
to connect it directly to the 12 volt supply, however, I would prefer the
fan only ran when the compressor was running. I believe the compressor is
powered by 20 volts AC. Is there a way to do this without getting fancy
i.e. rectifying & regulating the 20 vac. I hear the click of a relay when
the compressor starts - spare contact ??? Would anybody have a schematic
of the circuit board ?

Thanks

John

I am putting a muffin fan behind my Norcold DE-540. It is a simple matter to connect it directly to the 12 volt supply, however, I would prefer the fan only ran when the compressor was running. I believe the compressor is powered by 20 volts AC. Is there a way to do this without getting fancy i.e. rectifying & regulating the 20 vac. I hear the click of a relay when the compressor starts - spare contact ??? Would anybody have a schematic of the circuit board ? Thanks John

PB

Peter Bennett

Thu, Jul 27, 2006 5:12 AM

Wednesday, July 26, 2006, 9:44:19 PM, jag wrote:

jvbc> I am putting a muffin fan behind my Norcold DE-540. It is a simple matter
jvbc> to connect it directly to the 12 volt supply, however, I would prefer the
jvbc> fan only ran when the compressor was running. I believe the compressor is
jvbc> powered by 20 volts AC. Is there a way to do this without getting fancy
jvbc> i.e. rectifying & regulating the 20 vac. I hear the click of a relay when
jvbc> the compressor starts - spare contact ??? Would anybody have a schematic
jvbc> of the circuit board ?

jvbc> Thanks

jvbc> John

I have a small Norcold fridge and found an easy source of switched 12 volts on the controller board - I think there was an existing Faston tab to connect to. I'd have to pull the fridge out to verify this (I should have documented it when I did it). I'll try to check it out in the next couple of days...

--
Peter Bennett, VE7CEI Vancouver, B.C., Canada
Lien Hwa 28 (AKA Polaris 30) "Sea Spray"
GPS and NMEA info: http://vancouver-webpages.com/peter
Vancouver Power Squadron: http://vancouver.powersquadron.ca

Wednesday, July 26, 2006, 9:44:19 PM, jag wrote: jvbc> I am putting a muffin fan behind my Norcold DE-540. It is a simple matter jvbc> to connect it directly to the 12 volt supply, however, I would prefer the jvbc> fan only ran when the compressor was running. I believe the compressor is jvbc> powered by 20 volts AC. Is there a way to do this without getting fancy jvbc> i.e. rectifying & regulating the 20 vac. I hear the click of a relay when jvbc> the compressor starts - spare contact ??? Would anybody have a schematic jvbc> of the circuit board ? jvbc> Thanks jvbc> John I have a small Norcold fridge and found an easy source of switched 12 volts on the controller board - I think there was an existing Faston tab to connect to. I'd have to pull the fridge out to verify this (I should have documented it when I did it). I'll try to check it out in the next couple of days... -- Peter Bennett, VE7CEI Vancouver, B.C., Canada Lien Hwa 28 (AKA Polaris 30) "Sea Spray" GPS and NMEA info: http://vancouver-webpages.com/peter Vancouver Power Squadron: http://vancouver.powersquadron.ca

BP

Bob Peterson

Thu, Jul 27, 2006 6:42 AM

John, in the days when Radio Shack sold all sorts of electrical components
and before it morphed into a cellphone dealership, I'd have recommended that
you get a current-sensing relay, install it in the wires feeding the
compressor and run your 12 volts for the muffin fan through the relay. But
my local Radio Shack stores no longer carry that sort of thing, don't have a
catalog in the shop and haven't a clue about circuitry questions, so I doubt
that Radio Shack has what you need, others might.

Bob Peterson
"Lopaka Nane"
47' Lien Hwa CPMY
San Francisco

-----Original Message-----
From: trawlers-and-trawlering-bounces@lists.samurai.com
[mailto:trawlers-and-trawlering-bounces@lists.samurai.com] On Behalf Of
jag@vcn.bc.ca
Sent: Wednesday, July 26, 2006 9:44 PM
To: trawlers-and-trawlering@lists.samurai.com
Subject: T&T: Norcold Frig & Muffin Fans

I am putting a muffin fan behind my Norcold DE-540. It is a simple matter to
connect it directly to the 12 volt supply, however, I would prefer the fan
only ran when the compressor was running. I believe the compressor is
powered by 20 volts AC. Is there a way to do this without getting fancy i.e.
rectifying & regulating the 20 vac. I hear the click of a relay when the
compressor starts - spare contact ??? Would anybody have a schematic of the
circuit board ?

Thanks

John

John, in the days when Radio Shack sold all sorts of electrical components and before it morphed into a cellphone dealership, I'd have recommended that you get a current-sensing relay, install it in the wires feeding the compressor and run your 12 volts for the muffin fan through the relay. But my local Radio Shack stores no longer carry that sort of thing, don't have a catalog in the shop and haven't a clue about circuitry questions, so I doubt that Radio Shack has what you need, others might. Bob Peterson "Lopaka Nane" 47' Lien Hwa CPMY San Francisco -----Original Message----- From: trawlers-and-trawlering-bounces@lists.samurai.com [mailto:trawlers-and-trawlering-bounces@lists.samurai.com] On Behalf Of jag@vcn.bc.ca Sent: Wednesday, July 26, 2006 9:44 PM To: trawlers-and-trawlering@lists.samurai.com Subject: T&T: Norcold Frig & Muffin Fans I am putting a muffin fan behind my Norcold DE-540. It is a simple matter to connect it directly to the 12 volt supply, however, I would prefer the fan only ran when the compressor was running. I believe the compressor is powered by 20 volts AC. Is there a way to do this without getting fancy i.e. rectifying & regulating the 20 vac. I hear the click of a relay when the compressor starts - spare contact ??? Would anybody have a schematic of the circuit board ? Thanks John

DS

David Stahl

Thu, Jul 27, 2006 12:27 PM

I am putting a muffin fan behind my Norcold DE-540. It is a simple matter
to connect it directly to the 12 volt supply, however, I would prefer the
fan only ran when the compressor was running. I believe the compressor is
powered by 20 volts AC. Is there a way to do this without getting fancy
i.e. rectifying & regulating the 20 vac. I hear the click of a relay when
the compressor starts - spare contact ??? Would anybody have a schematic
of the circuit board ?

Thanks

John

=================
Reply:

I wired an attic fan thermostat ($15) to the 12 volt circuit and a 1 amp
inline fuse. When the air behind the refer gets to 90 or so degrees I have
two muffin fans that come on. Cuts the refer run time down substantially and
circulating air when the boats closed up.

Skooch Hatteras LRC 42
Worton Creek MD

I am putting a muffin fan behind my Norcold DE-540. It is a simple matter to connect it directly to the 12 volt supply, however, I would prefer the fan only ran when the compressor was running. I believe the compressor is powered by 20 volts AC. Is there a way to do this without getting fancy i.e. rectifying & regulating the 20 vac. I hear the click of a relay when the compressor starts - spare contact ??? Would anybody have a schematic of the circuit board ? Thanks John ================= Reply: I wired an attic fan thermostat ($15) to the 12 volt circuit and a 1 amp inline fuse. When the air behind the refer gets to 90 or so degrees I have two muffin fans that come on. Cuts the refer run time down substantially and circulating air when the boats closed up. Skooch Hatteras LRC 42 Worton Creek MD

VN

Vance Nelson

Thu, Jul 27, 2006 2:07 PM

I am looking at the same thing for my Norcold DE541. There is a fan kit
available for about $35 that has the proper voltage without doing any
electronic fabrication. It hooks to the compressor leads, so only runs when
the compressor does.

Vance B. Nelson Superior Dreams GB32-340
17419 Osma Plat Rd
Houghton, MI 49931
KC8RGO
-----Original Message-----
From: trawlers-and-trawlering-bounces@lists.samurai.com
[mailto:trawlers-and-trawlering-bounces@lists.samurai.com] On Behalf Of
jag@vcn.bc.ca
Sent: Thursday, July 27, 2006 12:44 AM
To: trawlers-and-trawlering@lists.samurai.com
Subject: T&T: Norcold Frig & Muffin Fans

I am putting a muffin fan behind my Norcold DE-540. It is a simple matter
to connect it directly to the 12 volt supply, however, I would prefer the
fan only ran when the compressor was running. I believe the compressor is
powered by 20 volts AC. Is there a way to do this without getting fancy
i.e. rectifying & regulating the 20 vac. I hear the click of a relay when
the compressor starts - spare contact ??? Would anybody have a schematic
of the circuit board ?

Thanks

John

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I am looking at the same thing for my Norcold DE541. There is a fan kit available for about $35 that has the proper voltage without doing any electronic fabrication. It hooks to the compressor leads, so only runs when the compressor does. Vance B. Nelson Superior Dreams GB32-340 17419 Osma Plat Rd Houghton, MI 49931 KC8RGO -----Original Message----- From: trawlers-and-trawlering-bounces@lists.samurai.com [mailto:trawlers-and-trawlering-bounces@lists.samurai.com] On Behalf Of jag@vcn.bc.ca Sent: Thursday, July 27, 2006 12:44 AM To: trawlers-and-trawlering@lists.samurai.com Subject: T&T: Norcold Frig & Muffin Fans I am putting a muffin fan behind my Norcold DE-540. It is a simple matter to connect it directly to the 12 volt supply, however, I would prefer the fan only ran when the compressor was running. I believe the compressor is powered by 20 volts AC. Is there a way to do this without getting fancy i.e. rectifying & regulating the 20 vac. I hear the click of a relay when the compressor starts - spare contact ??? Would anybody have a schematic of the circuit board ? Thanks John _______________________________________________ http://lists.samurai.com/mailman/listinfo/trawlers-and-trawlering To unsubscribe send email to trawlers-and-trawlering-request@lists.samurai.com with the word UNSUBSCRIBE and nothing else in the subject or body of the message. Trawlers & Trawlering and T&T are trademarks of Water World Productions. Unauthorized use is prohibited.

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Norcold Frig & Muffin Fans