1. ## Recovery Cylinder Capacity

What method are you guys using to determine the capacity of your recovery cylinders?

2. I have always used the stamped gross weight on the tank. Is that wrong?

3. yep lol. thats part of it but theres a way of determining what percentage of the cylinder is fluid at certain temps etc so you dont go beyond 80% liquid in the thing.

ive attached two pdf charts that i dug up from last year. theyre both different and i think one is out dated or something.

4. I have always used the WC * .8 + TW = total weight when 80%.

5. dont ya just fill it till it cant fit no more

6. Originally Posted by ryand
dont ya just fill it till it cant fit no more
that's what i don't do lol

7. 62lbs and 42lbs. max weight on the two sizes that i use. that's how i know. fill it till it is there or close to there.

hey profiler, why you doing installation NATE's????

if you do the service NATE's they'll give you the installation credits

8. Originally Posted by EverettsHVAC
I have always used the WC * .8 + TW = total weight when 80%.
If its r22 that's what I do, if its 410 I believe its 2/3's the wc weight. But I can be wrong on that I just remember 2/3 is the fill on a new tank. I'm sure someone will correct me if thats wrong.

9. ## Got this somewhere...

Not sure where I found this formula but here it is.

To convert to refrigerant capacity:
Maximum allowable gross cylinder fill weight is 0.8 x water capacity x specific gravity of
the refrigerant recovered @ 77°F/25°C + the cylinder tare weight.

10. Originally Posted by beachtech
62lbs and 42lbs. max weight on the two sizes that i use. that's how i know. fill it till it is there or close to there.

hey profiler, why you doing installation NATE's????

if you do the service NATE's they'll give you the installation credits

You silly geese...ive only taken 2 exams plus core. What makes you think im actually taking the installation exams? I took the gas heat service and heat pump service. 21 certs total i believe including cores and ive knocked out 8 of em. I put service/ installation on my thingy cause ive got boph.
Last edited by Profiler; 02-25-2009 at 09:22 PM.

11. Originally Posted by ryand
dont ya just fill it till it cant fit no more
I do that then put it in the hot Van

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