Nomenclature of the vacuum system components

Component	Description	Component	Description
Image Modified	Multi-stage dry pump (pre-pump) RUN and STP buttons are used to operate the pump status: OFF mode	Image Modified	Gate-valve status: closed, not allowed to open
Image Modified	Multi-stage dry pump (pre-pump) status: MAIN mode	Image Modified	Gate-valve status: closed, allowed to open
Image Modified	Multi-stage dry pump (pre-pump) status: BOOSTER mode	Image Modified	Gate-valve status: open, allowed to open
Image Modified	Scroll pump	Image Modified	Gate-valve status: open, not allowed to open → may have been forced open
Image Modified	Turbo pump status: OFF mode	Image Modified Image Modified	Pressure gauge green: reading red: out of range
Image Modified	Turbo pump status: Accelerating	Image ModifiedImage Modified	Pressure interlock display red: condition not met green: condition met
Image Modified	Turbo pump status: Full Speed	Image Modified	Cold-cathode status display circle: status display ENA and DIS buttons are used to force start or stop the gauge