Date: Wed, 06 Feb 2002 09:53:38 +0000
From: Johannes H Andersen <johsnopsamanytime.co.uk>
Subject: Re: ventilation fan speed (inbetween settings)


Bryan wrote: > > danny <dannynopsamia-esprezzo.com> wrote in message news:<3C5F09EC.BFCEE2EDnopsamia-esprezzo.com>... > > Bryan wrote: > > > > > I have a 9000cs 93 model with standard aircon (not climate control). > > > What frustrates me is fan settings 1 & 2 are quite low (fine in winter > > > but useless in Summer), while switching to setting 3 gives adequate > > > summer ventilation but hurricane-like noise. Essentially the fan > > > speed gap between setings 2 & 3 is too large. Does anyone know if it > > > is possible to either crank up setting 2, or reduce setting 3 so that > > > an acceptable level of airflow can be achieved without all the noise? > > > I expect that it is just rheostat that the dial operates. Has anyone > > > tried this or does anyone know how to remove the fan speed dial to see > > > what's behind? > > > thanks > > > Bryan > > > > My 1990/91 9000CD has a four speed fan, not sure how it differs from yours > > (mine has aircon, no climate control). There isn't a rheostat - in the > > bulkhead (easily accessed from the engine bay under the plastic tray) is > > the fan motor with a plug in unit that contains resistance wires for each > > speed (no resistance for top speed), together with the thermal fuse. It > > would be possible to change the length of a resistance wire and thus alter > > the fan speed, if you could work out how much to chop off! For your > > convenience I've added a page to my site below (www.gaggia-espresso.com) - > > follow the Saab 9000 link for pictures of the resistor pack location. > > This may not apply to your vehicle as some 9000's have the fan control in > > an awkward location (in the dash, I believe?). > > Thanks Danny, > Mine also has 4 speeds. It looks easier than I anticipated. I can > just buy / make extra resistance wires and replace with the existing > number 2 & 3 resistors till I get a better combination. > Thanks again > Bryan The resistors consume considerable power and are dependent on cooling from the airflow. make sure the resistors are sufficiently rated. Johannes

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