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Flushing Evaporator in car

MasserD on Wed April 20, 2011 11:50 AM User is offline

Year: 1994
Make: Lincoln
Model: Towncar
Engine Size: 4.6
Refrigerant Type: R-34
Country of Origin: United States

I need to flush the Evaporator. It is the only part of the Air Condition system that is not apart or out of the car. What is the best way to flush it out without removing it from the car?

TRB on Wed April 20, 2011 11:53 AM User is offlineView users profile

My opinion. Using the Hecat Pulsator. We use a similar model in our shop. Procedure is listed in Hecat's Tech paper. Which is listed in the flushing forum.

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MasserD on Wed April 20, 2011 7:37 PM User is offline

I forgot about Hecat, that is a good idea. I have never used Hecat before. I think that would take care of it. I have changed everything but the Condenser and the Evaporator. I am going to flush it after I put it back together, but I wanted to give the Condenser and Evaporator a little more time before I put it together, to make sure it is clean. Thank you for your fast reply, good idea.
Thanks Again,
MasserD
Don

HECAT on Fri April 22, 2011 10:21 AM User is offline

Don,

Don't flush after you put it back together. Flush the Evap and Condenser individually and make sure they are clean and DRY before beginning to reassemble the system with your new parts.

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FLUSHING TECHNICAL PAPER vs2.pdf 

amphicar770 on Tue May 31, 2011 11:05 AM User is offline

I too am considering the pulsator for my evaporator as no shops in this area have the h1000.

My system has the receiver drier attached direct to the expansion valve, then feeding into evaporator. There is a second line from evaporator to compressor. Presumably, these are the lines I would hook pulsator to?

Would I then drive air or nitrogen through those same line to flush out remaining solvent and dry things?

Thanks.

HECAT on Tue May 31, 2011 10:21 PM User is offline

Quote
Originally posted by: amphicar770
I too am considering the pulsator for my evaporator as no shops in this area have the h1000.



My system has the receiver drier attached direct to the expansion valve, then feeding into evaporator. There is a second line from evaporator to compressor. Presumably, these are the lines I would hook pulsator to?

Would I then drive air or nitrogen through those same line to flush out remaining solvent and dry things?

Thanks.

I am sorry but only a handful of automotive shops have purchased the H1000 to date; the majority have gone to aviation repair centers. You would need to remove (replace) the filter and expansion valve (clean or replace) and flush the open paths of the evaporator only. Yes you will need to completely remove and dry out the solvent with dry compressed air or nitrogen (preferred).


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FLUSHING TECHNICAL PAPER vs2.pdf 

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