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Do driers come with moisture in them?

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Do driers come with moisture in them? Gary 06-15-2008
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Posted by Gary on June 15, 2008, 11:20 am
I never thought about this before but since I've started doing 410A systems
I'm using a lot more driers.I've noticed that it takes considerably longer
to get to 500 microns on systems with new driers installed than those with
none at all. We virtually never use driers on R22 new installations & get
to 500 microns usually in twenty minutes where it can take hours on 410A
installations where a drier is used. So far the drier is the only common
denominator I've found that changes with the installations along with the
time it takes to pull down.
Anyone else notice a difference.

Real Goods Solar, Inc.
Posted by Noon-Air on June 15, 2008, 12:03 pm

>I never thought about this before but since I've started doing 410A systems
> I'm using a lot more driers.I've noticed that it takes considerably longer
> to get to 500 microns on systems with new driers installed than those with
> none at all. We virtually never use driers on R22 new installations & get
> to 500 microns usually in twenty minutes where it can take hours on 410A
> installations where a drier is used. So far the drier is the only common
> denominator I've found that changes with the installations along with the
> time it takes to pull down.
> Anyone else notice a difference.

No difference here, but then I *always* install a new driers any time I
install a new system or a system is opened up. As far as the length of time
it takes, let me ask this... have you noticed that the evap coils are 3
times the size of the old R-22 systems?? BTW... all of the new Rheem
condensers and heat pumps come with a new drier included, so there is no
excuse for not installing one.


Posted by new jersey on June 15, 2008, 12:57 pm
It is not drier it is OIL POE it is virtually impossible to remove moisture
from POE oil You are lucky that you do not work on low temperatures systems
to get 500 microns it require overnight evacuation and do lot of praying
that is why I like to stay way from any refrigerant that uses POE oil
How many service tech. knows that R-134a can cause tumor in they testicles
Remember you hear it first from me!
have fun guys
Tony

>I never thought about this before but since I've started doing 410A systems
> I'm using a lot more driers.I've noticed that it takes considerably longer
> to get to 500 microns on systems with new driers installed than those with
> none at all. We virtually never use driers on R22 new installations & get
> to 500 microns usually in twenty minutes where it can take hours on 410A
> installations where a drier is used. So far the drier is the only common
> denominator I've found that changes with the installations along with the
> time it takes to pull down.
> Anyone else notice a difference.



Posted by KJPRO on June 15, 2008, 2:24 pm

> It is not drier it is OIL POE it is virtually impossible to remove
> moisture
> from POE oil


It's not "virtually impossible", it *is* impossible, without the use of
filter/driers!

Now for the cold hard facts... think *new* systems... is there POE oil in
*new* line sets or evaporators????
Now Tony, remember, you here it from me first!!!

Now, go get a clue...



Posted by Zyp on June 15, 2008, 8:09 pm
new jersey wrote:
> It is not drier it is OIL POE it is virtually impossible to remove
> moisture from POE oil You are lucky that you do not work on low
> temperatures systems to get 500 microns it require overnight
> evacuation and do lot of praying that is why I like to stay way from
> any refrigerant that uses POE oil How many service tech. knows that R-134a
> can cause tumor in they
> testicles Remember you hear it first from me!
> have fun guys
> Tony
>
>> I never thought about this before but since I've started doing 410A
>> systems I'm using a lot more driers.I've noticed that it takes
>> considerably longer to get to 500 microns on systems with new driers
>> installed than those with none at all. We virtually never use driers
>> on R22 new installations & get to 500 microns usually in twenty
>> minutes where it can take hours on 410A installations where a drier
>> is used. So far the drier is the only common denominator I've found
>> that changes with the installations along with the time it takes to
>> pull down. Anyone else notice a difference.

[Is] that what your problem is Tony - sniffing 134a has caused a brain
fusion in your left testicle.

--
Zyp



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