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

[PONDERSOA at aol.com]

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/_ 
(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_ (mailto:PONDERSOA)   To: _PONDERSOA_ 
(mailto: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/_ 
(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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