Waters Xevo G2 QTof, Operator'S, Overview And Maintenance Manual, Page: 218 / 248

B-8 External Connections
To connect the oil-free roughing pump:
.
1. Place the pump on the floor, within 1 m (3 feet 3 inches) of the
instrument.
2. Using an NW40 center ring, attach the NW25/NW40 adaptor to the
roughing pump inlet flange, and then secure the connection with an
NW40 clamp, tightening it with the 7-mm nut driver.
Warning:
The pump and its connections can be contaminated
with biohazardous and/or toxic materials. Always wear
chemical-resistant, powder-free gloves when performing this
procedure.
Caution:
• To ensure correct operation of the roughing pump, install it
within 1 degree of horizontal.
• Locate the roughing pump is located in an area where the
ambient temperature is 12 to 40 ºC (54 to 104 ºF).
• To ensure proper ventilation, install the pump with the
following minimum clearances:
Warning:
The roughing pump is heavy. To avoid injury, at least
two people must lift the pump.
TP03165
Left side minimum clearance
is 15.24 cm (6 inches)
Right side minimum clearance
is 15.24 cm (6 inches)
Front side minimum clearance
is 35.56 cm (14 inches)
Back side minimum clearance
is 15.24 cm (6 inches)