Agilent Technologies TwisTorr 305-IC Mode D'emploi page 204

7 Instructions for Use
Improper Use
CAUTION!
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Risk of injury through sharp edges
Rotor and stator disks of turbopumps have very sharp edges.
➔ Before servicing the pump or before any mounting/
dismounting action of the pump from the system, wait
for the complete standstill of the pump.
➔ Do not operate directly inside the high vacuum flange.
➔ If necessary wear protective gloves according to EN 420.
TwisTorr 305-IC User Manual / 87-901-058-01