Re: Air Conditioning Condenser Fan
- Would you please provide additional detail information?
Specifically, the fan model and where obtained, how it was mounted,
what needed to be added/modified for mounting, where was the 12vdc
obtained, fuse protection sizing and type, etc.
I live north of Houston, TX. Auto A/C for my 1995 Force is year
round due to the humidity/heat. For nine months of the year, the A/C
does not cycle. It operates continuously.
If you want to take this off-line, my contact info is:
cb02 at ridemetro.org
--- In firstname.lastname@example.org, "ldr214" <replytome@...> wrote:
> I added another electric fan to the a/c condenser on my 97 Force.
> had it in place for over a month now and feel that the results are
> worth the effort.
> I live in Vacaville, CA, which is in the central valley near
> Sacramento. Summers are known for hot afternoons with mid 90's to
> 100 being pretty typical. The air conditioning on the Force just
> didn't seem to be able to provide what I considered adequate cooling
> in these conditions. Everything is working and freon levels are
> correct. My experience was that as temperatures get into the 90 to
> 100's the a/c wasn't worth running. If I was going to transport it
> around 365 days a year I had a desire for it to be more useful in
> Investigating the problem in an attempt to get some cooler air on
> days I found that when Solectria converted the Metro they removed
> radiator and its fan. The radiator fan was positioned so it also
> provided cooling for the driver side of the a/c condenser.
> Step 5 in the GM service manual for the insufficient a/c cooling is
> check the operation of the radiator fan. As noted in the GM service
> manual high condenser temperature can result in the hot high
> gaseous liquid freon not returning to a medium temperature liquid
> state. Without a fan the first third of the condenser is essentially
> uncooled which results in high temperatures when the outside air
> cool enough for the other portion of the condenser to adequately
> down the temp.
> I was able to install a 9-inch electric fan in front of the
> covering most of the side that was originally cooled by the radiator
> fan. The results are positive. The pressure reading with and without
> the extra fan installed support the original design requirement for
> being there. The temperature of the condenser is much cooler with
> extra fan. Inside the car the duct readings are lower and the system
> responds more quickly. On mild days (80's) with lower blower
> the compressor actually cycles on and off in response to the
> evaporator sensor getting down to 32 degrees. We haven't been in the
> 100's yet but the system is definitely better in the 90's with the
> extra fan.
> Installation was rather easy with no bracket fabrication required
> using a 9-inch low profile fan. Locating it just behind the a/c
> installation only required loosening the drier bracket, removing the
> horn and disconnecting the condenser pressure switch. All these
> re-installed normally after the fan is in place. I wired it using a
> simple saddle splice on the factory fan wire.
> Downside is a bit more noise outside the vehicle, an increase in
> weight by about 2 lb. and the consumption of a few more watts.
> is being "cool" in the EV on a hot day.
> If your interested in a bit more efficiency in the a/c I'll be glad
> to answer any questions and provide more detail to anyone