P.S...

Posted by Bob on May 05, 2007 at 17:36:22 from (69.178.229.154):

In Reply to: Re: Vacuum out AC System----cheap way??? posted by Bob on May 05, 2007 at 16:57:58:

Allan,

You stated: "Far less "load on the system" than that large charge of non-compressible refrigerant oil floating around in there."

The refrigerant oil IS "non-compressible". That is GOOD. The oil does not "compress", so no power is wasted compressing it.

The term we need to work with is "condensable".

Any air left in the system is "noncondensable", meaning power is used, and unneeded HEAT is generated by COMPRESSING the air, and, since it does not CONDENSE (as the refrigerant does), it "springs back" (expands) WITHOUT absorbing heat, as the refrigerant does, when it expands from a liquid to a gas through the "TXV" or "FOT".

From the ARI website:

"Air is another contaminant you need to be concerned about because it adversely affects cooling performance. Air is a noncondensable gas and can make a compressor noisy. Evacuating the A/C system with a vacuum pump should pull all of the air and moisture out of the system — assuming the pump is operating correctly, pulls adequate vacuum and is left on long enough to fully evacuate the system."

I can't imagine why you would take this stand against "pumping down" a system before charging it, against ALL "conventional wisdom"???

Replies:

• Re: P.S... Allan In NE 05:37:18 05/06/07 (0)
• Re: P.S... Jon Hagen 18:01:04 05/05/07 (0)

Add a Reply Name: E-Mail: Subject: Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts!  We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]