vacuum pump tech: 10 micron 1.5 pascal rated vp6d 2 stage,CAN I BOIL OFF THC?

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yeti5508

Active Member
I live at about 1800ft and absolute pressure he is 28.3 i believe so that means the highest i can pull here is 28.3, my gauges dont go above 28 but there are solid at 28..

heres the problem

ive vac purged oil for 3 DAYS STRAIGHT and the shit still bubbles..

its in a pasty form when worm but touchable when dried (touchable paste)

basically the shit never stops boiling, the only time something finishes is if the vac chamber top pops off and it air drys over night..


MY MAIN QUESTION IS AM I BOILING THC AND TERPS?

View attachment 2722402
 
Y

yeti5508

Active Member
yeti5508 said:
I live at about 1800ft and absolute pressure he is 28.3 i believe so that means the highest i can pull here is 28.3, my gauges dont go above 28 but there are solid at 28..

heres the problem

ive vac purged oil for 3 DAYS STRAIGHT and the shit still bubbles..

its in a pasty form when worm but touchable when dried (touchable paste)

basically the shit never stops boiling, the only time something finishes is if the vac chamber top pops off and it air drys over night..


MY MAIN QUESTION IS AM I BOILING THC AND TERPS?

View attachment 2722402
Click to expand...

My main problem is my gauges, and my elevation..i dont know if im over 28hg

is there a proper gauge i can buy to hook up to the pump to read microns?
 
vacpurge

vacpurge

New Member
what the hell kind of piece of shit gauge are you using that doesnt go to 30"?!?!?!?!?!

lets see a picture of the oil.

what is the temperature? its the one thing you never mentioned which is the whole point of that graph... the temp @ X vacuum...so, whats your oil/griddle temp??

sometimes you just gotta let it sit longer and longer, providing youre under 120F. I dont have too much experience over that temp, but I have had a 9g puddle of oil in the chamber for like 2 weeks straight now. took around a week or so to finally wax up and dry up at 110F. then I just let it sit for another week or so. havnt smoked it yet, but the last batch that I let sit in there for a week @ 110F definitely got me fuckin stonedddd in 2 hoots. dont think she lost any significant amount of THC. terps possibly, but im not too concerned.
 
Fadedawg

Fadedawg

Well-Known Member
Boiling points are determined by absolute pressures, starting at zero atmosphere. The weight of one atmosphere is about 14.7 psi, or 29.92" Hg, or 760,000 microns. The weight of the atmosphere increases the amount of thermal energy it takes for a substance to boil.

If you are at elevation, some of that weight has already been removed, because the column of air you are weighing is not as tall. It boils at exactly the same pressure, it just doesn't require as much thermal energy to do so. The gauge, unless it is an absolute pressure gauge, will however not reflect accurate absolute pressure, as its zero actually starts at +29,92" Hg.

We only vacuum to -29.5" Hg, where THC boils at about 168F, where at -29.9" Hg, THC boils at about 63F.

If your calibrated gauge reads -28.5" Hg at full vacuum, you would add the difference between that reading and -29-92" Hg, to determine the absolute reading, or 1.05" Hg.
 
Someacdude

Someacdude

Active Member
We are talking psi G OR microns?
Atmospheric pressure has little effect on gage pressure.
Change you vacuum pump oil NOW.
Ive been in the hvac business for 30 plus years and i still change my oil every time.
Vacuum Oil absorbs the moisture in the air and the heat from a 24 hour run breaks down the oil, all the contaminants are stored in the oil.

Back in the day techs would leave their pump on overnight on a big system, sometimes the oil would flash and burn buildings down, that was when the oil had a paraffin base , regardless, if you arent changing your oil thow it away and get a new one, this time change your oil every other time.
 
Y

yeti5508

Active Member
The pump never pulled more than 28"

Its a cps vp6d 10 micron

I wish I could understand what your d
Saying but can't fully grasp..

I'm using a mityvac hand pump gauge, a us general vac hand pump gauge, and a vac gauge to test fuel pressure..

Temps are. 115-125
 
Twitch

Twitch

Well-Known Member
if your above sea level your gauge will read lower but will be the same as someones that is at 29.9 at sea level and if your below it will read high

what is the temp of the oil?
 
Fadedawg

Fadedawg

Well-Known Member
yeti5508 said:
The pump never pulled more than 28"

Its a cps vp6d 10 micron

I wish I could understand what your d
Saying but can't fully grasp..

I'm using a mityvac hand pump gauge, a us general vac hand pump gauge, and a vac gauge to test fuel pressure..

Temps are. 115-125
Click to expand...
My VP6D will pull under 100 microns at seal level. One inch of Mercury (Hg) is 2540 microns.

http://www.sablesys.com/baro-altitude.html will give you maximum pressure at different altitudes and at 1800 feet, you are at around 28" Hg:

What do the bubble look like. Are they random sized or small and fizzy?
 
Y

yeti5508

Active Member
Would the physical state of the wax be more sticky, the oil in pics taste great no snap crackle and pop, smooth.\

What im asking is , is the reason my wax wont become crumble is because im lowering the boiling point and in turn the physical state changes..

The picture of the one in a clump NEVER got ANY HEAT at all
but is sticky as shit, and i haven't tried it yet..

So I need a vacuum regulator to bleed off air to keep it at 27.5.. because 28 in hg is really 29.99 in hg..

what does a nalgene vacuum check valve do? just a check valve for vacuum?..


Or buy a few more ball valves and a better seal for the lexan and just lock pressure at 27.5

I'm using a piece of thick soft rubber hose to make seal in between pot and lexan,

Works just not perfect will lose pressure after 24hrs, im thinking of using that foam tape, but not sure maybe a thick layer of duct tape.
the pot is about 1/4 inch thick

Temps are 115-125
 
Someacdude

Someacdude

Active Member
Tell ya what.

Since everyone is more concerned with gage pressure/ vacuum reading do this.

Nitrogen is preferable but co2 will work as well, no there is no moisture in the co2.

Bull your vacuum and break the vacuum 3 or 4 times using ONLY nitrogen or co2, do not let anymore air into the space, use valves etc.

This is a technique we use in the trade to drop our micron level.
It can drastically improve and speed up the whole process.

Think of it this way, vacuum is being measured in microns.
Gage reading doesnt mean squat, zero, nada nothing , believe it.

That being said you are looking for noncondensables water, moisture , seriously, under 100 microns AND HOLD , Is the only true way to know you have a next to perfect vacuum , without going into outer space.
 
vacpurge

vacpurge

New Member
what hes saying is to pull a vacuum, then when you bleed air back in... dont bleed in plain air, put pure nitrogen or c02 instead in through the intake somehow. the inch gauges are so inaccurate, we should be measuring in microns as theyre far more accurate. not just 1 through 30 " in 1/8th increments for a total of 240 different readings. ... theres 1 through 750,000+ microns. very accurate.

I believe the whole vacuum is achieved by removing moisture from the air (I dont know why or how that works though). thats why you see steam coming out of the pump. so if you can really remove all moisture in the chamber by not even using good ol air to begin with, youre already 1 step ahead.
 
Fadedawg

Fadedawg

Well-Known Member
Someacdude said:
Tell ya what.

Since everyone is more concerned with gage pressure/ vacuum reading do this.

Nitrogen is preferable but co2 will work as well, no there is no moisture in the co2.

Bull your vacuum and break the vacuum 3 or 4 times using ONLY nitrogen or co2, do not let anymore air into the space, use valves etc.

This is a technique we use in the trade to drop our micron level.
It can drastically improve and speed up the whole process.

Think of it this way, vacuum is being measured in microns.
Gage reading doesnt mean squat, zero, nada nothing , believe it.

That being said you are looking for noncondensables water, moisture , seriously, under 100 microns AND HOLD , Is the only true way to know you have a next to perfect vacuum , without going into outer space.
Click to expand...
THC boils at 17C/62.6F under 100 microns vacuum, so we stay above 29.5" Hg (10,000 microns), and don't need our micron gauge. THC boils at 76C/168.8F under that partial pressure.

Got a left over bottle of N2 from our defunct Perkins Elmer GC that we continue to pay demurrage on, so I'll give it a shot to speed up dessication. We used <5 ppm water content argon in industry as a drying agent, so it should work..
 
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