Waters SYNAPT G2 Operator's, Overview And Maintenance Manual page 208

To connect the oil-free roughing pump
Back side minimum clearance
is 15.24 cm (6 inches)
Left side minimum clearance
is 15.24 cm (6 inches)
1. Place the pump on the floor, within 1 m of the instrument.
2. Attach the NW25/NW40 adaptor to the roughing pump inlet flange
using an NW40 center ring, and then secure the connection with an
NW40 clamp.
B-4 External Connections
The pump and its connections can be contaminated
Warning:
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:
The roughing pump is heavy. To avoid injury, at least
Warning:
two people must lift the pump.
Right side minimum clearance
is 15.24 cm (6 inches)
TP03165
Front side minimum clearance
is 35.56 cm (14 inches)
.