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Old 11-28-2014, 09:24 PM   #21
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Re: Factory rear A/C and heat into an EB cargo

Eatmorefish: In most cases if the AC lines are opened for a prolonged period, the in line drier needs to be replaced since humidity in the lines uses up the drying capability of the drier desiccant.
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Old 11-29-2014, 04:39 AM   #22
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Re: Factory rear A/C and heat into an EB cargo

Excellent point BoyWonder! Eventually we'd have to address that issue but now is just as good too.

If this project goes forward to the point the A/C system will be re-installed and made functional a few other parts would have to be replaced as well. Along with the drier the orifice tube is another item needing attention. I don't want to jinx things but if the existing system was not sealed the compressor might also be a candidate for replacing.

Once the entire system is re-plumbed a competent and knowledgeable A/C shop will know to pull vacuum for several hours, perhaps even a full day. Sadly shops using the so-called automated refrigerant charging/recovery systems don't consider accumulated moisture inside a system, simply stop the evacuation process when they believe they've achieved a close to 30" Hg reading.

Without a moisture content reading or highly accurate electronic vacuum gauge (reading in micro millimeters) being used A/C performance issues will arise. Automotive A/C systems with as large a volume as the Club Wagon are even more sensitive to left-behind moisture content than its smaller cousins.

The trick here will be finding a shop willing to pull a vacuum over the extended time that will be required to re-charge the newly-refreshed A/C system properly.
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Old 11-30-2014, 12:03 AM   #23
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Re: Factory rear A/C and heat into an EB cargo

Really appreciate all the information and quick reply. Crawled around the vehicle today but it was kinda dark and snowing (November) so didn't really learn much more than I already knew. The van is bare from the front seats back, including the headliner. My thought was to pull the evaporator and fan from the black housing and park them in a cabinet base behind a grill to just get some cool air to the rear. The lines and everything under the hood pass a cursery visual inspection, once I get it inside I can get a better look. Seems like I'll need to get it into a real shop that can check the system, unfortunatly that involves a ferry trip and a bit of a drive, so probably won't happen right away. The heating unit and all the wiring have been replaced, I plan to detour the heater hose thru the hot water tank on the way aft. Again, thanks for the comeback, I'll let you know how I make out.
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