Appion TEZ-8 Questions

[Lightning_Boy]

Picking up my new appion Tez8 tommorrow and it feels like Christmas!
Already gOt the megaflow evacuation kit, sped up vacuums to the point I can leave jobs on time or even early and do a better quality job.
Adding the tez 8 will help out no end when evacuating big systems.

[Lightning_Boy]

Holy crap,
I am very, very impressed with the TeZ 8. & megaflow kit.

Running the setup like you are supposed to with the tree and every hose attached I've evacuated systems to 300 microns in 3-4 minutes.
It's been invaluable to catch up on time for those jobs that go over for the unexpected **** you never bid for...

[SBKold]

You do need to study up on what can happen when you use a pump setup like that. Pulling to a micron you stated in the time..

[Jared Fetter]

You do need to study up on what can happen when you use a pump setup like that. Pulling to a micron you stated in the time..

You save yourself time and immeasurable grief?

[Lightning_Boy]

SBKold,

I assume you're referring to the fact moisture in a system will freeze when pulling vacuum too quick.
From what I've read, the mass of the air in a typical system will prevent the freezing. I think I would have to evacuate a 1 ton system in 50 seconds

[Lightning_Boy]

To be fast enough to freeze the moisture.
I also triple evac with nitro which makes a considerable difference from 1st pull to final pull.

[jim bergmann]

It is the thermal mass and the far above freezing temps that will keep that from happening during A/C season. If you were evacuating a refrigeration unit with a cold box, or a heat pump in the winter with a moisture issue you might freeze moisture if it was present in the system. There is no disadvantage a rapid evacuation during a typical install or service. If you have that much liquid (moisture) in a system you better figure a better way that evacuation to remove it as it could takes hours if not days to completely dry it out.

[SBKold]

Thank you for the reply Jim.

[Lightning_Boy]

Thanks for a definitive answer Jim, everywhere I go people keep telling me I'll freeze the moisture in system. Glad I finally have a solid reply for the non believers!

[Appion-ChrisP]

We've done some pseudo-scientific tests to see what kind of time you'd be looking at IF you managed to freeze moisture in the system. We put about a full ounce of water in a mock-up system, with huge connection ports to ensure fast enough evacuation to get the water to freeze. On the equivalent of a 1 ton system, this added about 15 minutes (from 1 minute totally dry to 16 minutes) until we had fully sublimated the ice and dropped to a stable vacuum below 200 microns.

The hardest part about this test was getting the water to freeze in the first place... the thermal mass and 65º ambient kept the water liquid long enough to boil it off each time, so to get the water to freeze we pre-cooled our rig (got it to about 40-45º), and put 3/8" connections on it. Even then, we had to get to about an ounce or more of water in one place before the stuff would freeze.

[Lightning_Boy]

Thanks Chris, love my setup and the time it's saved me. If you guys ever need a product tester let me know...

[SBKold]

Why I love this site as well.....Im a believer! But sadly not an owner of a TEZ8 or megaflow yet.

[Bunyan]

Does Appion sell their oil in bulk? I see where they offer 24-packs of cartridges but I'm talking jugs. I would assume it would save costs to clean and refill my own cartridges. It looks like a great setup and I look forward to owning one in the very near future along with the accessories.