Hmm my plastic sight glass was pretty corroded when I bought the pump. The kerosene does not seem to have worsened it. Will look for a glass one , anyone else done this?
So far I only go the vacuum to pull 90 microns with a bullseye hooked directly to it. Then the microns slowly creeped up to 300ish. But I am still pulling gunk oil out of it even after flushing several times and halfway hand scrubbing the inside.
Your case seal is popped. What you are describing sounds like a leaky case seal.
That or thereās alot of water Wich increased micron as it boils off with hear and time.
The gas ballast just brushes the solvent vapors out the exhaust of the pump, as long as those solvents do not dissolve into the vacuum pump oil. Working with methanol (or anything volatile), you can still use a cold trap before the pump to protect the pump and your body from the vapors. It is best to exhaust the pump to the outdoors when working with hazardous vapors like methanol, and the low setting on the gas ballast keeps the pump running optimally, both regardless of the use of a cold trap.
Hey all.
Attempting to take my pump apart this morning to give it a good scrub on the inside with some mineral spirits and ran into a bit of a road bump.
Even reading the manual, I canāt seem to figure out what Iām doing wrong, and I donāt want to break anything in the process. I cannot get the last bit of pump off on the right side and the motor off on the left. Iām sure one is holding the other, or there is a coupler that is stuck together somewhere in there but I figured Iād ask for help before I ruined something expensive.
Follow up question to that. I canāt really find good examples, I did search a bit. Would you consider these vanes to need to be replaced immediately? These are the high pressure side. The low pressure side looks the vanes are made out of a different material and they look fine.
Looks like deteriorated carbon fiber. Is the end that seals smooth? Or is this a reed valve?
Yeah. Thatās what it looked like to me as well. It is indeed the end that seals smooth up against the wall of the stator. I figured the ends are frayed and thats why im not pumping down all the way. rest of the pump looks great.
I emailed some vendors to try and get the right part. I cant seem to find a display image of those carbon fiber vanes anywhere on any of the part sites.
Still have this motor and stator locked to one another if any one has any ideas on that one. it could just be that its stuck and i do need to force it apart.
I finally figured how to get it apart.
Thanks everyone!
greatā¦ .i got stuck on the same area the first time. What did you do to get it apart, just keep pryin?
embarrassingly, i got my head out of my ass and saw the 4 large bolts i was missing that connected the two halfs together. 
pretty happy with it. for 400 bucks i got a 2000 dollar pump that needs a couple vanes. other than that its perfect.
Hmm I still canāt get these two apart, I believe Iām past any bolts. Not sure itās worth it but trying to clean well
Did you take the bolt out of the fan and remove the fan on the other side?
If you remove that screw the whole black piece comes off. Once off your ballast is closed if you wanna open just put the black āplugā back on.
Just in case this might help somebody some day when theyāre searching.
If youāre looking for vanes, the best deal Iāve found so far is at: https://www.capvac.com/
I emailed them to make sure I was getting the proper part numbers:
We actually donāt have carbon fiber vanes. We do have X-Lon which should better than the carbon fiber ones. Our part number for the X-Lon vanes are A0176 (small vane), A0177 (Large vane), and A0248 (oil pump vane).
Enjoy!
Anyone know where to grab a replacement blue filter thing for the 2021i?
I believe if memort serves(i havent used my alcatel in a while) but the air intake for the best value vac chamber will work
If your already in there replace everything you can and clean everything you can.
Thanks, just ordered one. It looks like it will fit, if not itās only 9.00.
I dont know if this helps but, I am pricing out a major rebuild kit for the 2021i and found this website, has just about every part for almost any alcetel/adixen pump.
