Waters Xevo G2 QTof, Operator'S, Overview And Maintenance Manual, Page: 220 / 248

B-10 External Connections
Making the electrical connections to the Edwards oil-free
roughing pump
Roughing pump connections:
To make the electrical connections for the oil-free roughing pump:
1. Connect the roughing pump power cord to the main power source.
2. Connect the relay cable from the roughing pump d.c. connector to the
backing pump control connector on the mass spectrometer’s rear panel.
Tip:
Use the higher of the two connectors. The lower connector is for
delayed backing pump control.
Connecting to the nitrogen gas supply
Required materials
• Chemical-resistant, powder-free gloves
• 6-mm (¼-in) PTFE tubing (included in the Xevo G2 QTof Installation
Kit)
• Nitrogen regulator (not supplied)
TP03165
Roughing pump main
power connector
To power source
Roughing pump
d.c. connector
Roughing pump
connector
Xevo G2 QTof rear panel