Thermostate Setting for Failing Squarrel Fan
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08-22-2007, 01:00
Post: #21
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Thermostate Setting for Failing Squarrel Fan
Scott,
Replacement Snap Disk thermostats can be purchased at Grainger or on Ebay. Here is a link for the one on ebay: [http://cgi.ebay.com/Dayton-SNAP-DISC-FAN...56713\ QQcmdZViewItem] If you go to Grainger, they usually have them on the rack out front. They are very common in Restaurant equipment and you should have no problem getting one. A common setting is one that closes the contacts at 110 degrees and opens them at 90, but you could also use others. Shane Fedeli 85PT40 Hershey, PA --- In WanderlodgeForum@yahoogroups.com, "Scott Forman" <sforman@...> wrote: > > Looks like this is my culprit. Where can a get a replacement > thermostat? > > Scott > > --- In WanderlodgeForum@yahoogroups.com, "Howard O. Truitt" > > > > > Scott, > > Pull the thermostat and check the voltage going to the thermostat. > May need a new thermostat. > > Howard T., Sowega, 86 PT40, 8V92 > > > > > > ----- Original Message ----- > > From: Scott Forman > > To: WanderlodgeForum@yahoogroups.com > > Sent: Monday, August 20, 2007 12:57 PM > > Subject: [WanderlodgeForum] Re: Thermostate Setting for Failing > Squarrel Fan > > > > > > OK...still fighting this project, need some suggestions. > > > > Everything is mounted and installed, but I cannot get the fan to > > engage from the original thermostat. When I apply a flame to the > > thermostat, I can hear it click and a small voltage begins > flowing to > > the original squirrel-cage wire. The problem, though, is that the > > voltage at that wire is very weak, varying from less than 1 volt > to > > around 5. I cannot identify anything that makes the voltage > change. > > This voltage is not enough to close the relay and turn the fan > on. > > > > Any suggestions as to what is causing the voltage to be low or > how to > > fix it? I guess this may be the reason the original fan quit > working > > in the first place. > > > > Scott > > > > --- In WanderlodgeForum@yahoogroups.com, "Howard O. Truitt" > > > > > > > > Scott, > > > That would be a safe assumption. > > > Howard T, Sowega, 86 PT40 > > > > > > ----- Original Message ----- > > > From: Scott Forman > > > To: WanderlodgeForum@yahoogroups.com > > > Sent: Saturday, August 18, 2007 3:36 PM > > > Subject: [WanderlodgeForum] Re: Thermostate Setting for Failing > > Squarrel Fan > > > > > > > > > There are two wires going to my original fan, green & yellow. > Is > > it > > > safe to assume green is ground and yellow is hot? > > > > > > Thanks > > > Scott > > > > > > --- In WanderlodgeForum@yahoogroups.com, "sfedeli3" <sfedeli3@> > > > wrote: > > > > > > > > Scott, > > > > Use the 12V + wire going to the squirrel cage fan as > > a "trigger" > > > for > > > > a Bosch style relay. You will want to supply the main voltage > > to the > > > > fan directly from a 12V source in your charger/Rediline > > compartment. > > > > The fan will draw better than 12 amps, which would burn out > the > > > > thermostat contacts over time if you don't use the relay. Be > > sure to > > > > also use 10 or 12 ga. wire for the fan. The trigger wire from > > the > > > > squirrel cage can be lighter size since it does not carry > much > > of a > > > load. > > > > I located the Bosch relay in the charger compartment and ran > the > > > > wires from the squirrel cage and to the fan through a 1/2" > hole > > in > > > the > > > > compartment wall. Make sure to use a grommet to prevent > chafing > > and > > > > try to enclose all of the wires in wire loom or some sort of > > > conduit. > > > > If you are not familiar with how to wire the relay, this is a > > great > > > > project for learning- there are numerous links floating > around > > the > > > web > > > > with instructions. Also be sure to install a 20 A fuse > between > > the > > > 12V > > > > source and the relay. > > > > > > > > Shane Fedeli > > > > 85PT40 > > > > Hershey, PA > > > > > > > > > > > > --- In WanderlodgeForum@yahoogroups.com, "Scott Forman" > > <sforman@> > > > > wrote: > > > > > > > > > > Can someone explain how to run the wires for this set up? > > > > > > > > > > Scott Forman > > > > > 86 PT38 > > > > > Memphis > > > > > > > > > > --- In WanderlodgeForum@yahoogroups.com, "sfedeli3" > > <sfedeli3@> > > > > > wrote: > > > > > > > > > > > > Hi Curt, > > > > > > > > > > > > My thermostat is mounted in the ceiling of the engine > > > compartment > > > > > > just above the alternator on my 6V92. It is about the > size > > of a > > > > > small > > > > > > bottle cap. I used it, in conjuction with a bosch relay, > to > > > power a > > > > > > Hayden fan that cools the engine compartment. I used the > > > largest fan > > > > > > that I could find at Advanced Auto parts and mounted the > > fan > > > behind > > > > > > the grill that provides access to the curbside of the > > engine > > > > > compartment. > > > > > > Originally, I had set my fan to expel the hot air and > work > > in > > > > > > tandem with the large engine fan to pass air through the > > > > > compartment. > > > > > > Once parked, however, I have achieved better results by > > drawing > > > > > cool, > > > > > > outside air into the engine compartment, expelling it > > through > > > the > > > > > > radiator. I usually just reverse the wires on the fan, > > causing > > > it to > > > > > > run backwards. This would cool the compartment so fast, > > that > > > the > > > > > relay > > > > > > would shut it off, so I also installed a SPDT switch to > > > override the > > > > > > thermostat and leave the fan on. I may eventually install > > at > > > DPDT > > > > > > switch to reverse the polarity without having to pull the > > wires > > > off > > > > > > the fan. This setup has worked fine for about 12K miles > and > > the > > > fan > > > > > > does not seem to mind running in reverse. > > > > > > > > > > > > Shane Fedeli > > > > > > 85PT40 > > > > > > Hershey, PA > > > > > > > > > > > > --- In WanderlodgeForum@yahoogroups.com, "Curt Sprenger" > > > > > > > > > > > > > > > > > > > > Several of us have recently posted about the ratteling > or > > non > > > > > working > > > > > > > fan that is mounted in the upper rear area of the > engine > > > > > compartment. > > > > > > > Does anyone know the thermostat degree setting for that > > fan? > > > > > Anyone > > > > > > > know where that thermostate is located? > > > > > > > > > > > > > > My thought at this time is to control the add-in Hayden > > fans > > > to > > > > > run > > > > > > > off the same controls. > > > > > > > -- > > > > > > > Curt Sprenger > > > > > > > 1987 PT38 8V92 "MacAttack Racing" > > > > > > > Anaheim Hills, CA > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ---------------------------------------------------------- > > ---------- > > > > > > > > > No virus found in this incoming message. > > > Checked by AVG Free Edition. > > > Version: 7.5.476 / Virus Database: 269.11.19/955 - Release > Date: > > 8/15/2007 4:55 PM > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > -------------------------------------------------------------------- > ---------- > > > > > > No virus found in this incoming message. > > Checked by AVG Free Edition. > > Version: 7.5.476 / Virus Database: 269.11.19/955 - Release Date: > 8/15/2007 4:55 PM > > > > > > [Non-text portions of this message have been removed] > > > |
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08-22-2007, 09:28
Post: #22
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Thermostate Setting for Failing Squarrel Fan
Common part in gas furnace that most HVAC companies carry.
Troy ----- Original Message ----- From: sfedeli3 To: WanderlodgeForum@yahoogroups.com Sent: Wednesday, August 22, 2007 8:00 AM Subject: [WanderlodgeForum] Re: Thermostate Setting for Failing Squarrel Fan Scott, Replacement Snap Disk thermostats can be purchased at Grainger or on Ebay. Here is a link for the one on ebay: [http://cgi.ebay.com/Dayton-SNAP-DISC-FAN...56713\ QQcmdZViewItem] If you go to Grainger, they usually have them on the rack out front. They are very common in Restaurant equipment and you should have no problem getting one. A common setting is one that closes the contacts at 110 degrees and opens them at 90, but you could also use others. Shane Fedeli 85PT40 Hershey, PA --- In WanderlodgeForum@yahoogroups.com, "Scott Forman" <sforman@...> wrote: > > Looks like this is my culprit. Where can a get a replacement > thermostat? > > Scott > > --- In WanderlodgeForum@yahoogroups.com, "Howard O. Truitt" > > > > > Scott, > > Pull the thermostat and check the voltage going to the thermostat. > May need a new thermostat. > > Howard T., Sowega, 86 PT40, 8V92 > > > > > > ----- Original Message ----- > > From: Scott Forman > > To: WanderlodgeForum@yahoogroups.com > > Sent: Monday, August 20, 2007 12:57 PM > > Subject: [WanderlodgeForum] Re: Thermostate Setting for Failing > Squarrel Fan > > > > > > OK...still fighting this project, need some suggestions. > > > > Everything is mounted and installed, but I cannot get the fan to > > engage from the original thermostat. When I apply a flame to the > > thermostat, I can hear it click and a small voltage begins > flowing to > > the original squirrel-cage wire. The problem, though, is that the > > voltage at that wire is very weak, varying from less than 1 volt > to > > around 5. I cannot identify anything that makes the voltage > change. > > This voltage is not enough to close the relay and turn the fan > on. > > > > Any suggestions as to what is causing the voltage to be low or > how to > > fix it? I guess this may be the reason the original fan quit > working > > in the first place. > > > > Scott > > > > --- In WanderlodgeForum@yahoogroups.com, "Howard O. Truitt" > > > > > > > > Scott, > > > That would be a safe assumption. > > > Howard T, Sowega, 86 PT40 > > > > > > ----- Original Message ----- > > > From: Scott Forman > > > To: WanderlodgeForum@yahoogroups.com > > > Sent: Saturday, August 18, 2007 3:36 PM > > > Subject: [WanderlodgeForum] Re: Thermostate Setting for Failing > > Squarrel Fan > > > > > > > > > There are two wires going to my original fan, green & yellow. > Is > > it > > > safe to assume green is ground and yellow is hot? > > > > > > Thanks > > > Scott > > > > > > --- In WanderlodgeForum@yahoogroups.com, "sfedeli3" <sfedeli3@> > > > wrote: > > > > > > > > Scott, > > > > Use the 12V + wire going to the squirrel cage fan as > > a "trigger" > > > for > > > > a Bosch style relay. You will want to supply the main voltage > > to the > > > > fan directly from a 12V source in your charger/Rediline > > compartment. > > > > The fan will draw better than 12 amps, which would burn out > the > > > > thermostat contacts over time if you don't use the relay. Be > > sure to > > > > also use 10 or 12 ga. wire for the fan. The trigger wire from > > the > > > > squirrel cage can be lighter size since it does not carry > much > > of a > > > load. > > > > I located the Bosch relay in the charger compartment and ran > the > > > > wires from the squirrel cage and to the fan through a 1/2" > hole > > in > > > the > > > > compartment wall. Make sure to use a grommet to prevent > chafing > > and > > > > try to enclose all of the wires in wire loom or some sort of > > > conduit. > > > > If you are not familiar with how to wire the relay, this is a > > great > > > > project for learning- there are numerous links floating > around > > the > > > web > > > > with instructions. Also be sure to install a 20 A fuse > between > > the > > > 12V > > > > source and the relay. > > > > > > > > Shane Fedeli > > > > 85PT40 > > > > Hershey, PA > > > > > > > > > > > > --- In WanderlodgeForum@yahoogroups.com, "Scott Forman" > > <sforman@> > > > > wrote: > > > > > > > > > > Can someone explain how to run the wires for this set up? > > > > > > > > > > Scott Forman > > > > > 86 PT38 > > > > > Memphis > > > > > > > > > > --- In WanderlodgeForum@yahoogroups.com, "sfedeli3" > > <sfedeli3@> > > > > > wrote: > > > > > > > > > > > > Hi Curt, > > > > > > > > > > > > My thermostat is mounted in the ceiling of the engine > > > compartment > > > > > > just above the alternator on my 6V92. It is about the > size > > of a > > > > > small > > > > > > bottle cap. I used it, in conjuction with a bosch relay, > to > > > power a > > > > > > Hayden fan that cools the engine compartment. I used the > > > largest fan > > > > > > that I could find at Advanced Auto parts and mounted the > > fan > > > behind > > > > > > the grill that provides access to the curbside of the > > engine > > > > > compartment. > > > > > > Originally, I had set my fan to expel the hot air and > work > > in > > > > > > tandem with the large engine fan to pass air through the > > > > > compartment. > > > > > > Once parked, however, I have achieved better results by > > drawing > > > > > cool, > > > > > > outside air into the engine compartment, expelling it > > through > > > the > > > > > > radiator. I usually just reverse the wires on the fan, > > causing > > > it to > > > > > > run backwards. This would cool the compartment so fast, > > that > > > the > > > > > relay > > > > > > would shut it off, so I also installed a SPDT switch to > > > override the > > > > > > thermostat and leave the fan on. I may eventually install > > at > > > DPDT > > > > > > switch to reverse the polarity without having to pull the > > wires > > > off > > > > > > the fan. This setup has worked fine for about 12K miles > and > > the > > > fan > > > > > > does not seem to mind running in reverse. > > > > > > > > > > > > Shane Fedeli > > > > > > 85PT40 > > > > > > Hershey, PA > > > > > > > > > > > > --- In WanderlodgeForum@yahoogroups.com, "Curt Sprenger" > > > > > > > > > > > > > > > > > > > > Several of us have recently posted about the ratteling > or > > non > > > > > working > > > > > > > fan that is mounted in the upper rear area of the > engine > > > > > compartment. > > > > > > > Does anyone know the thermostat degree setting for that > > fan? > > > > > Anyone > > > > > > > know where that thermostate is located? > > > > > > > > > > > > > > My thought at this time is to control the add-in Hayden > > fans > > > to > > > > > run > > > > > > > off the same controls. > > > > > > > -- > > > > > > > Curt Sprenger > > > > > > > 1987 PT38 8V92 "MacAttack Racing" > > > > > > > Anaheim Hills, CA > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > ---------------------------------------------------------- > > ---------- > > > > > > > > > No virus found in this incoming message. > > > Checked by AVG Free Edition. > > > Version: 7.5.476 / Virus Database: 269.11.19/955 - Release > Date: > > 8/15/2007 4:55 PM > > > > > > > > > [Non-text portions of this message have been removed] > > > > > > > > > > > > > > > > > ---------------------------------------------------------- > ---------- > > > > > > No virus found in this incoming message. > > Checked by AVG Free Edition. > > Version: 7.5.476 / Virus Database: 269.11.19/955 - Release Date: > 8/15/2007 4:55 PM > > > > > > [Non-text portions of this message have been removed] > > > [Non-text portions of this message have been removed] |
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