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old school brake cleaner would work great, but its banned now. (methyl chloroform)
New chlorinated one is just not volatile enough.
The non chlorinated one, though should be fairly good. According to MSDS CRC brake cleaner and carburetor cleaner are identical except the packaging.

In response to phase out of HCFC-141b (that was the interim replacement to CFC-11) I believe Subaru approves the use of brake cleaner in A/C flush in one of their factory service manuals.

Anything you use is bad for the environment in their own way.

CFC-11 and HCFC-141b makes holes in ozone and warms up teh globe. PFCs and HFCs warm up the earth. Alcohols and flammable stuff are considered VOCs that make photochemical smog or something.

Seriously though, I believe carburetor and brake cleaner (non chlorinated) are more or less comparable to 141b in cleaning power.

Originally Posted by Bob_Scaringe

Rubbing alcohol has lots of water in it so in addition to being flammable it also adds water into the line set making evacuation slower

Rubbing alcohol is pretty much unacceptable, because it has 30% water by volume,but HEET-iso sold in auto supply place is anhydrous alcohol.

Whatever is in Qwik Flush, the 68C 1.29g/cm^3 and the fact it gives off corrosive fumes indicates its a halocarbon. Transdichloroethylene maybe? Can someone tell me Qwik Flush gives positive for chlorine on their halide torch? If it turns green its got chlorine.
68C is awfully high though. Must be hard to dry.

Originally Posted by stay gold jonny

On a slow day at the shop before all the super hot weather came through, we took a lineset that was from a burn out and tested RX11, Quick system flush and rubbing alcohol. The lineset set was 75' long so we cut it into 3 20' sections and flushed both the 3/8 & 7/8 with nitrogen and the solvents. We flushed the linesets into 5 gallon white buckets to see what kinda garbage came out. Then we cut the linesets apart at half way to check and see if the copper was cleaned. The RX11 and Quick system flush both worked great, the shocker was how well the rubbing alcohol worked! The rubbing alcohol seemed to be darker in our white buckets after the flush and when looking at the lineset it looked very, very clean, I was impressed! We don't use rubbing alcohol because it's not approved by the OEM but it did work! Too bad cause rubbing alcohol is real cheap compared to the flush kits!

Rubbing alcohol has lots of water in it so in addition to being flammable it also adds water into the line set making evacuation slower

Originally Posted by jhthornt

Is it possible / advisable to flush from the AH thru the suction line and thru the reversing valve while the compressor is removed? Would RX11 or System Flush damage the RV?

No Qwik System Flush will not bother the reversing valve

On a slow day at the shop before all the super hot weather came through, we took a lineset that was from a burn out and tested RX11, Quick system flush and rubbing alcohol. The lineset set was 75' long so we cut it into 3 20' sections and flushed both the 3/8 & 7/8 with nitrogen and the solvents. We flushed the linesets into 5 gallon white buckets to see what kinda garbage came out. Then we cut the linesets apart at half way to check and see if the copper was cleaned. The RX11 and Quick system flush both worked great, the shocker was how well the rubbing alcohol worked! The rubbing alcohol seemed to be darker in our white buckets after the flush and when looking at the lineset it looked very, very clean, I was impressed! We don't use rubbing alcohol because it's not approved by the OEM but it did work! Too bad cause rubbing alcohol is real cheap compared to the flush kits!

Is it possible / advisable to flush from the AH thru the suction line and thru the reversing valve while the compressor is removed? Would RX11 or System Flush damage the RV?

Originally Posted by Special Ed

I use Rx11 to clean my hands.

Also, if I'm constipated I use it as a hydro colonic.... I've had no problems yet except for the blood in my stool.

OxyClean will get the blood stains right out of your underwear.

Great
You will also find it cost quite a bit less money which is aways good
Bob

Hey bob,just used that flush you sent us,seemed to have worked very well as system smelled fresh and clean,I can see us using it from now on.

Originally Posted by Flashg21230

Got the kit bob,thanks.just wondering,I got my refrigeration cert from mainstream engineering is this the same company.

Yes
We also make the QwikLug terminal repair kit, QwikCheck acid test kit, QwikShot acid treatment, a mold test kit and a bunch more.
I think you will find the System flush works better than anyone else's and cost less.
Bob

Got the kit bob,thanks.just wondering,I got my refrigeration cert from mainstream engineering is this the same company.

Ty and I will

Originally Posted by Flashg21230

My company's work address is bill
Bill Myers heating & cooling
15604 Darwin ct
Laurel,md,20707

Bill
I will send out a starter kit on Monday
Please let me know your thoughts after using it.
Bob

Originally Posted by Bob_Scaringe

Wish you would try QwikSystemFlush in the orange aerosol can. Independent tests show it works better and it cost quite a bit less! Send my your work address and I will send you a can to try for free
We have nothing to hide

My company's work address is bill
Bill Myers heating & cooling
15604 Darwin ct
Laurel,md,20707

Wish you would try QwikSystemFlush in the orange aerosol can. Independent tests show it works better and it cost quite a bit less! Send my your work address and I will send you a can to try for free
We have nothing to hide

Any company I ever worked for only used rx11.i can't say I've ever had any problems,but then again would I have any problems if I didn't flush at all.i have heard from a major refrigerant manufacter that flushing isn't doing any good.you just need to make sure you pull a good long evacuation.of course equipment manufacturer require the flush for their warrantys to apply.

Let's be clear, I am not talking about any flushing product except ours but if any manufacturer has any data to show QwikSystemFlush leaves a residue then I would like to see that data published so we can challenge the results. We would get an independent test laboratory to repeat their claims for validity. What I can tell you is that QwikSystemFlush leaves no reside in the system after evacuation and we have verified this in many many experiments. I challenge anyone with data to the contrary to show their data. Our independent test result data is at
http://www.epatest.com/flush/test-results.pdf

Also we are an OEM, Mainstream manufactures all the Improved Environmental Control Units (IECUs) and modular refrigeration units for the US military. We use both Copeland and Tecumsch compressors in the units and Require QwikSystemFlush be used after a burnout and this has never invalidated a compressor warrantee.NEVER!!! Just so you know you can't just get out of a financial responsibility to replace a compressor without technical data to support your invalidity. I have never seen an negative data on QwikSystemFlush

Just got off the phone with Rex Martin of Tecumseh Compressor, he affirmed that Tecumseh will null and void the compressor warranty if they find out that a system been cleaned with a flush like rx11. They have found contaminants in systems that have been flush into Tecumseh systems and compressor.

I can see your point and appreciate your reply. If the product(s) out there utilized for flushing linesets etc, if used properly, are worlds above the usual clean-out procedures manufactures outline, then just curious why they would not adopt them, but discourage it?

If I was a flushing agent manufacturer, much like yourself, I would be all over the compressor manufactures to join forces to re-write the procedures. Kind of see this like the oil manufactures that are on the compressor manufactures preferred lists. Not that the oil from BVA, NuCalgon, or Virginia (Parker) is any different, but seems compressor manufactures like to suggest Mobil (Exxon) oil products...so Mobile outsells the rest by shear fact they are the chosen ones.

Not sure if your dealing with politics, deaf ears, or what, but still love to see approval or acceptance from these guys.

This is a great question. Look if the compressor manufacturers find any brand of flushing solution in their compressor they will invalidate the warrantee and they should since a flushing agent will destroy a compressor since it will remove the oil from the wear surfaces.

However when a good flushing solution is used and followed by a proper evacuation then there will not be any flushing solution residue in the system. QwikSystemFlush evaporates completely and leaves no residue. QwikSystemFlush evaporates much much easier than water so if you pull even a slight vacuum, which is not enought to get the water out, the SystemFlush is still all gone.