[W126 Coupe] HOW TO MAKE A VACUME PUMP for ac systems

[Richard Hogarth]

Mike, 
very clever, very Cool idea. (no pun intended)
I was wondering what to do with that old mini-fridge with bad door seals and
a cracked interior.
Quick question, do I keep the dryer on the fridge compressor and do I need
some kind of 
trap to keep the fridge compressor oil from leaking and blowing all over the
place?
Richard Hogarth
-Axlehead at bellsouth.net

 
 
 
  _____  

From: mbcoupes-bounces at mbcoupes.com [mailto:mbcoupes-bounces at mbcoupes.com]
On Behalf Of PONDERSOA at aol.com
Sent: Saturday, August 13, 2005 11:26 AM
To: 126 at mbz.org; mbcoupes at mbcoupes.com
Subject: [W126 Coupe] HOW TO MAKE A VACUME PUMP for ac systems


In a message dated 8/8/2005 10:04:30 P.M. Eastern Standard Time, PONDERSOA
writes:


 OK PPL  
 here I go 
 if any body is interested  you can make a compressor from junk  that will
give good( actually great) service 
 ( you must have gages or at least 1 hose to connect to the system  about
$15.00 
 firstly the concept of using engine vacuum to evacuate an air conditioner
system is ridiculous ... it aint going to work .. )in short what you are
doing when a system is evacuated is 1 removing noncondensible gasses 
2 boiling off water vapor
3 and checking for leaks 
 to do this the right way  you need 28 actually 29 or more  inches of
mercury  I usually do this for at least 1 hour... . unplug my compressor and
check the gauges if the system holds vacuum ..add freon 
 now here is what you need

an old refrigerator  motor( this is a compressor its usually big black and
makes the characteristic  humming sound we are all familiar with)
however a air conditioner  dehumidifier or water cooler will do the same....
 any thing that has a compressor in it  will work

 1 remove the compressor its usually bolted in there will be 2 lines
commeing out of the  compressor  one is a high side the other is a low side
now cut the lines using a tubing cutter so you will have a clean cut  you
want maybe 3 or 4 inches of line on the compressor 
 if you have used a air conditioner  there  usually wires going to a
capacitor   this looks like a oval metal  can with wires going to it  leave
the wires connected and where the wires come out of the unit  use the
appliances electrical cord and plug reconnecting them using wire nuts and
electrical tape

 so far you have spent nothing!!!! well sorry I forgot the tubing cutter 
available at home depot
 a small one should be under 10.00 
now go to any air conditioner supply house  
 
http://corporate.johnstonesupply.com/

   take the compressor with you ,and get a solder tee ( these range in price
se ...$5.84 to $16.29... )that will fit  those nice clean cut tubes on the
unit ....  and solder the tee on the suction side only!!!
 use one do not close ,crimp or shut off the pressure side .. . now you have
a vacuum pump that will work just fine and it cost nothing 
PS  
 a plastic milk crate works just fine to carry this in ...
 go get em 
 mike collins 
phila 
1985 500 sec 
   
 


 

 

-----------------
Forwarded Message: 


Subj:	 Re: [MBZ] R-12 THIS WILL ACTUALLY HELP  	
Date:	 8/8/2005 10:04:30 P.M. Eastern Standard Time	
From:	 PONDERSOA	
To:	 PONDERSOA	
 
 OK PPL  
 here I go 
 if any body is interested  you can make a compressor from junk  that will
give good( actually great) service 
 ( you must have gages or at least 1 hose to connect to the system  about
$15.00 
 firstly the concept of using engine vacuum to evacuate an air conditioner
system is ridiculous ... it aint going to work .. )in short what you are
doing when a system is evacuated is 1 removing noncondensible gasses 
2 boiling off water vapor
3 and checking for leaks 
 to do this the right way  you need 28 actually 29 or more  inches of
mercury  I usually do this for at least 1 hour... unplug my compressor and
check the gauges if the system holds vacuum ..add freon 
 now here is what you need

an old refrigerator  motor( this is a compressor its usually big black and
makes the characteristic  humming sound we are all familiar with)
however a air conditioner  dehumidifier or water cooler will do the same....
 any thing that has a compressor in it  will work

 1 remove the compressor its usually bolted in there will be 2 lines
commeing out of the  compressor  one is a high side the other is a low side
now cut the lines using a tubing cutter so you will have a clean cut  you
want maybe 3 or 4 inches of line on the compressor 
 if you have used a air conditioner  there  usually wires going to a
capacitor   this looks like a oval metal  can with wires going to it  leave
the wires connected and where the wires come out of the unit  use the
appliances electrical cord and plug reconnecting them using wire nuts and
electrical tape

 so far you have spent nothing!!!! well sorry I forgot the tubing cutter 
available at home depot
 a small one should be under 10.00 
now go to any air conditioner supply house  
 
http://corporate.johnstonesupply.com/

   take the compressor with you ,and get a solder tee ( these range in price
se ...$5.84 to $16.29... )that will fit  those nice clean cut tubes on the
unit ....  and solder the tee on the suction side only!!!
 use one do not close ,crimp or shut off the pressure side ... . now you
have a vacuum pump that will work just fine and it cost nothing 
PS  
 a plastic milk crate works just fine to carry this in ...
 go get em 
 mike collins 
phila 
1985 500 sec 
   

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