Agilent Technologies 700 Series User Manual page 42

Operation
The ICP-OES gas control unit supplies uninterrupted gas purge to the
CAUTION
polychromator assembly to minimize the ingress of moisture. It is strongly
recommended that gas supplies be left on at all times except during long periods
of non-use.
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5
6
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8
If the instrument is not going to be in use for a period of time the torch, cone,
NOTE
snout and torch compartment should be cleaned of any deposits, dirt or residue.
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Switch off the mains power switch (the green light will go off).
This will turn off the complete instrument, including the Peltier
(if not done so manually earlier) as well as the polychromator
thermostating system.
Loosen the peristaltic pump tubes by releasing the pressure bars
and lift the tubes out of the grooves. To do this:
a
Push up the pressure bar screws. This releases them from the
resting bar (refer to Figure 8).
b
Allow the resting bar to swing downwards.
c
Lift the tubing out of the grooves.
Switch off the water cooler, laboratory exhaust system and any
accessories (where applicable), and shut down the argon gas
supply at the cylinder.
Exit the ICP Expert II software, if it is no longer required, by
choosing Exit from the File menu. Switch off the printer and
monitor.
Restarting the instrument will take several hours due to gas
purge and polychromator thermal stabilization time.
Agilent 700 Series ICP Optical Emission Spectrometers User's Guide