Agilent Technologies 700 Series User Manual page 33

Operation
2 Extinguish the plasma by clicking the Plasma Off icon, pressing F4 on the
keyboard or choosing Plasma Off from the Analyze menu. The peristaltic
pump stops automatically when the plasma is extinguished.
NOTE
The yellow Plasma emergency off button, located next to the mains power switch
on the front of the instrument, is designed to be used only in an emergency—for
example if the torch is melting. It is not intended to be used every time you want to
extinguish the plasma. If used to extinguish the plasma, you will need to reset the
Plasma emergency off button to the 'on' position before the plasma can be re-
ignited.
3 Leave the mains power switch on to keep the polychromator thermostating
system operational.
4 To save on argon costs, you can turn the polychromator boost off overnight,
by choosing PolyBoost off from the Analyze menu. This is not recommended if
you are routinely analyzing lines below 190 nm, as the instrument will take
some time to stabilize when the polychromator boost is turned on again.
5 To increase the pump tubing lifetime, loosen the peristaltic pump tubes by
releasing the pressure bars and lift the tubes out of the grooves. To do this:
a
b
c
Figure 1
allowing tubing to be loosened
Agilent 700 Series ICP Optical Emission Spectrometers User's Guide
Push up the pressure bar screws. This releases them from the resting bar
(refer to Figure 1).
Allow the resting bar to swing downwards.
Lift the tubing out of the grooves.
Peristaltic pump with pressure bars pushed up and resting bar freely down,
33