Thermostate Setting for Failing Squarrel Fan

[Scott Forman]

Thanks you. New project!

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"
> > > wrote:
> > > >
> > > > 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
> > > >
> > >
> >
>