[labnetwork] Facility Process Vac

[Bryant Colwill]

Colleagues,

We are in need of repairing/replacing our cleanroom process vacuum pumps.
Currently, we use a water sealed rotary vane system but it has been 
suggested to convert to a oil sealed rotary screw style pump.
We target an ultimate vacuum of 28mmHg and our volume requirements, at 
point of use, are quite small (a couple spin chucks, end effectors, 
etc.).  Can anyone attest to having a rotary screw pump installed for 
this purpose that has withstood the test of time?  Any issues with 
premature/frequent bearing failure or replacement? Also, does changing 
from water sealed to oil sealed set off any red flags?

Thanks in advance,
Bryant

Bryant Colwill
MNCR General Manager
Rensselaer Polytechnic Institute
110 8th Street, CII 6015
Troy, NY 12180
Ph: 518-276-3946 <tel:518-276-3946>
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