Reply to "Charging new AC system"

larrywMember

Vinh's A/C has been out of service for years.

We are going to replace the York pump with a used Sanden that is plumbed with R12 nipples and flare fittings. We plan on refilling with R12.

Would someone please elaborate on flushing solvents and methods?

How about flushing and refilling the sumps in the compressors?

And another situation: How would one go about recharging a currently operating system opened for maintenance reasons? For example, I want to replace an iffy looking hose in my car at the receiver/dryer. I cracked the fitting open with a wrench and she has plenty of pressure and the gas seems to be carrying lots of oil too. I quickly retightened the fitting.

And also, if the compressors have sumps to carry their own oil, what are the small pressurized cans of R12 oil fed in through the charging manifolds supposed to do? There are no moving parts elsewhere in the system that require oil, are there?

11/30/149:19 AM

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