Venting Procedure (Without Contaminants And/Or Corrosive Gases) - Manual Venting - Agilent Technologies TwisTorr 74 FS Notice De Mode D'emploi

17 Technical Information
Venting Procedure (without Contaminants and/or Corrosive Gases) –
Manual Venting
Venting Procedure (without Contaminants and/or
Corrosive Gases) – Manual Venting
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To safely slow down the pump use a venting flow able to decelerate the rotor at
CAUTION!
a rate lower than 13-15 Hz/s. Higher deceleration rates could damage the
bearings.
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Close the process gases flowing into the system before sending
the STOP signal to the TwisTorr 74 FS pump.
Close the gate valve connecting the Turbo pump to the chamber
(if present).
Switch off the backing pump or close a fore-vacuum valve (if
present).
Turn off the Turbo pump by sending the STOP signal to the
controller.
Open the Vent Port (positioned on the envelope) slowly until to
reach atmospheric pressure in the system.
For water cooling: shut off the water supply.
TwisTorr 74 FS User Manual / 87-901-053-01 (A.00)