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Old 05-17-2003, 10:18 PM
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Join Date: Sep 2001
Location: central Texas
Posts: 17,281
Good Air Conditioning Site

I have not read all this site... but what I have seen looks like the guy knows a lot... and has empathy for us once in a while AC fixers...

http://www.geocities.com/microjet_2000/tools.html

and we can't be without an AC thread going , can we ?

Notice his information regarding flushing... this is more my idea of what it takes.. not just a once through of a qt of flush,,,
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http://www.hydraulic-supply.com/html/productline/mfgprod/aro-pump-company.htm

the ARO pump company...
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HUM, that is interesting.... he is using WD40 for the first flush... and using aerosol cans, but using a side tapper to get liquid, but propelled by the cans propellant...
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ackits.com is famous for good info... here is some on flushing...

Procedure we follow when flushing a system to remove debris and oil form an automotive air-conditioning system.

1. Each individual component needs to be flushed separately. Removal of hoses or any other devices may be needed for proper flushing.
2. Flush system with either an A/C flushing agent or products such as Mineral Sprits and Paint Thinner careful with Paint Thinner for obvious reasons. You may even purchase a Flush Gun or for the professional the Pulsator Mark III to help with getting the flushing agent through the components correctly. After using the flushing agent use compressed air to blow any residue left behind from the flushing process. It also helps to place you finger or a shop rag on the opposite end to create some back pressure to dislodge any debris.

It's best to perform this procedure many times in both directions to achieve the cleanest system possible.

After you think its clean do it again you can never have a clean enough system. Some condensers are very difficult to flush and may need to be replaced. Cheaper replacing them than to have debris left in the system and damage new components.

3. Do not flush any of these components accumulator/drier, compressors, expansion valves/orifice tubes and any hose assembles the have either a muffler or filter attached to them. These items need to be replaced.

4. Our company will use Nitrogen after the flushing stage as a finial flush to remove any moisture that maybe left behind by the shop air.

5. At this point you are ready to replace the damage components along with correct oil and have system evacuated and recharged. Evacuation should be done for a minimum of one hour. Charging is best done by pressures not amounts. Complete set of refrigerant gauges is needed for this as you will need both low and high side pressures to perform these tasks


Last edited by leathermang; 05-18-2003 at 12:06 AM.
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