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Posted by Noon-Air on April 17, 2007, 6:39 pm
>
> "DANgER" <"danger"@heat.com wrote in message
>
>> I think if you can get a 50 micron vacuum you have nothing do worry
>> about.
> I am always waiting for that pump on a R22
>> system. 500 microns is fine with me, never had a problem. 410A systems
> go a lot faster, I tripple evacuate them though.
>> The POE oil absorbs moisture so quickly.
>
>
>
> You really are clueless...
>
> A new (since this is what he's asking about) R-22 or R-410 system pull
> down
> the same, as they both have a new line set and evaporator.
> (I know the *used* equipment you install includes the condenser when
> pulling
> a vacuum, but you really shouldn't be giving out advice on *used*
> equipment
> when the OP is asking about *new* equipment)
>
> Also, if you think a triple evacuation gets the moisture out of an R-410
> system (POE oil), you're also mistaken.
>
> Every time you open your trap you show your incompetence!!
With 410a on a *used* system, the best you can hope for is to install a new
filter/drier, pull a 400 micron vacuum, and charge with new refrigerant.
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