Turbopump Screen

Every fusor and fusion system seems to need a vacuum. This area is for detailed discussion of vacuum systems, materials, gauging, etc. related to fusor or fusion research.
Post Reply
Tom McCarthy
Posts: 405
Joined: Wed May 08, 2013 3:36 pm
Real name: Tom McCarthy
Location: Ireland
Contact:

Turbopump Screen

Post by Tom McCarthy »

I'm using a Leybold Turbovac 150, and was about to bolt it on today when I realised the inlet screen was loose and not parallel to the inlet flange. It was a bit forward from its usual position, which I thought was fixed.

I pushed on it and the screen went back to its normal position and won't move now. If the pump was shook quite a bit while upside down, it might slip forward, but be able to be pushed back into position as described.

I'm not sure if anything has changed, perhaps it has always been this way. I'd like to make sure it's okay before spinning it up though.

Tom
Jerry Biehler
Posts: 975
Joined: Tue Nov 24, 2009 3:08 am
Real name:
Location: Beaverton, OR

Re: Turbopump Screen

Post by Jerry Biehler »

A lot of screens are just a light press fit. Bouncing it around in shipping or handling can knock them loose.
Tom McCarthy
Posts: 405
Joined: Wed May 08, 2013 3:36 pm
Real name: Tom McCarthy
Location: Ireland
Contact:

Re: Turbopump Screen

Post by Tom McCarthy »

Sounds good, thanks Jerry.
ian_krase
Posts: 636
Joined: Mon Nov 28, 2016 2:48 am
Real name: Ian Krase

Re: Turbopump Screen

Post by ian_krase »

Yeah, can confirm.


Varian turbos ship with a small plastic pick (I suspect it might be a rebadged dress shirt collar stay) to flip the screen out of the recess it fits into.
prestonbarrows
Posts: 211
Joined: Sun Jun 24, 2012 1:27 am
Real name:

Re: Turbopump Screen

Post by prestonbarrows »

Turbo inlet screens are typically just loosly retained by the conflat or ISO gasket on the inlet port. That is, they won't be positivly fixed until you install the pump on the mating flange. Then, they should be a bit loose, but not able to grossly fall out.
Post Reply

Return to “Vacuum Technology (& FAQs)”