PerkinElmer Clarus SQ 8 MS Series, Hardware Manual

Page: 60 / 184

Clarus SQ 8 MS Hardware Guide
58
Vacuum System
The source, ion optics, analyzer, and detector are fitted inside a cast aluminum
chamber. Vacuum is applied to the chamber using a rotary pump and a turbomolecular
pump. The vacuum is monitored through a wide range gauge. The rotary pump sits on
the floor and a turbomolecular high vacuum pump is inside the instrument.
Rotary Pump
The Clarus MS has a 3 m
3
/hr computer controlled mechanical pump. The
turbomolecular pump is backed by this direct drive rotary pump. The rotary vane
pump rests on the lab floor and may be positioned beneath the instrument. Care
should be taken to avoid mechanically coupling vibrations from this pump to the
mass spectrometer. Operation and maintenance details about these pumps can be
found in the manuals provided with the pump
.
0
l
ll
0
Mass Spectrometer
Connection Port
Exhaust Port
Oil Filler Plug
Drain Plug
Oil Level
Indicator
Gas Ballast
Switch
On/Off
Switch
Mode Selection
Switch
Max
Min
Voltage Selection Switch
(on the side)
Figure 8 The rotary (fore) pump.
The rotary vane pump (also called the forepump) provides the first level of vacuum
to approximately 2 x 10
-3
Torr. The pump has a switchable dual voltage.
Connect the rotary pump exhaust to a line vented to the atmosphere outside the
laboratory or use an appropriate exhaust line filter.