94pt 'cool o matic' gally exhaust fan

[Curt Sprenger]

Greg,

Replace the cool-0-matic with an Fantastic Fan, the rain sensor, 3 speed, in/out. Wire it to the same cool-O-matic thermostat wires. You'll have a new fan and more light in the kitchen.

On Tue, Sep 30, 2008 at 7:55 AM, Gregory OConnor <"Gregoryoc@aol.com"> wrote:

My center exhaust fan is a 12 volt roof mount exhaust. I keep it

running on a wall mounted thermostat(as designed) set at 90degF

with a window open and a cheap home style heater duct filter in the

window. works good, the filter gets choked with dust that would

otherwise settle in the parked bus or fan blades and motor(should

have a window open at each end but am too lazy).



I took the fan housing apart to clean and lube a noisy bearing and

uncovered a stowed three speed switch under the fan. the switch says

potentiometer and has two springs at back which I believe are heat

sinks (they get hot). I would like to have access to the switch to

reduce the speed while drycamping (layoff Leroy) and conserve

battery. I also like the idea of a slower moving fan while stored

and unattended and a higher speed fan while cooking.



I was thinking of hard wireing around the switch and moving the

potentiometer/switch to the wall near the thermostat . if you have

the switch where the fan mfg designed (thru a hole in the cover) you

cant slid in the headliner blank. Prob with moving the switch is

the "heat sink" in the wall???? I dont even know if the thermostat

has a wire 'to the fan' or 'to a relay - to the fan'??? also of

concern is the need for a heat sink?? does a product that produce

heat (pot switch),not consume energy?? would a rheostat be a better

choice for the wall??? gotta learn more about potentiometer vs

rheostat, both cool words but must be more to their differences.



Greg94ptCa

--
Curt Sprenger
1987 PT38 8V92 "MacAttack Racing"
Anaheim Hills, CA