17 Technical Information
Inlet screen installation
310/342 TwisTorr 74 FS User Manual / 87-901-053-01
prevent the rotor blades from being damaged by debris. The inlet
screen, however, does reduce the pumping speed as per following
table:
Reduction in pumping speed (%)
Ar N
2
He H
2
X3502-68000
X3502-68001
20% 18% 7% 5%
The inlet screen is fitted in the upper part of the pump, as shown in
the figure.
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