Dear Dave,

We had also problems with our Pfeiffer DUO2.5 installed in Finnigan
Delta+:

a)Pumps lost oil during the guaranty time.
b)On one pump the motor capacitor and shaft sealing failed after appr 1.5
years of operation.

Albrecht.

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Albrecht Leis, PhD
Joanneum Research
Institut of Hydrogeology und Geothermics
A-8010 Graz (Austria)
Elisabethstr. 16/II

Phone: +43 316 876-1485
Fax: +43 316 876-1321
e-mail.:[log in to unmask]