Re: [Amc-list] gooey stuff what the heck is that?

[adh@xxxxxxxxxxxxxxxxx (Sandwich Maker)]

" From: Wrambler242@xxxxxxxxxxx
" 
" answers in the text.
" 
" 
"  -------------- Original message ----------------------
" From: "Armand Eshleman" <aje1@xxxxxxxxxxxxxxx>
" > A million thanks Tom,
" > 
" > []
" > 
" > 
" > 
" > 1. What cleaner or solvent should be used? Would CRC Brake Clean work?
" 
" Brake clean will work. A friend who works on household A/C and
" heatpumps mentioned a chemical they use.
" You spray it on, let it soak, then house it off. It removes the fine
" layer of deteriorated aluminum to allow better heat transfer.  I don't
" have name for it as he never came through and gave me some! try a
" household A/C shop or supply place for it. I'd use a product made by
" "Star Brite" called Toon Brite if I could not find anything else. It
" cleans the grime off of pontoons on pontoon boats quite well. No
" scrubbing at all.

i'd be concerned that any of the cleaners mentioned that aren't
specifically for a/c work might be corrosive, even mildly, to the
aluminum.  i'd be reading labels very carefully.

thought: an aluminum paint might inhibit heat transfer, but if it
protects the metal it wouldn't get any worse.  potentially easier to
clean too.

i've been trying to edumacate myself about a/c too, specifically where
to get parts like compressor clutches - it seems to be nearly
impossible to find compressors and clutches separately.  in the
process, i've come across an interesting fact: starting in '11, europe
is phasing r134a out in favor of something with a lower global warming
footprint.  the leading contenders are hfo-1234yf, hfc-152a, and r744
aka co2 [!]. the first 2 are freons like 134 but claim to work better
though both are 'slightly' flammable; one experimenter anecdotally
compares r152a to r12.  r744 is supposed to need very high pressures
but at least 2 companies have vehicle r744 compressors.

the compressor in my '94 cherokee is presently tango uniform.  i'm
noodling the idea of getting a smaller compressor and larger pulley;
up here in the nearly-frozen north the only real use i have for a/c
more than a few days a year is assisting the defroster.  the goal
would be reducing a/c power requirement.
________________________________________________________________________
Andrew Hay                                  the genius nature
internet rambler                            is to see what all have seen
adh@xxxxxxxxxxxxxxxxx                       and think what none thought
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