CETAC Aridus II, Руководство оператора

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Aridus II™ Operator’s Manual
28
•
Protect the Aridus II
™
from long-term exposure to condensation,
corrosive materials, solvent vapor, continual standing liquids, or large
spills. Exposures of this type can damage the electronics.
•
Observe the same general electrostatic discharge precautions as with
any other integrated circuit electronic device. Low humidity
environments, especially when combined with static-generating
materials require maximum care.
Discharge static buildup and ground the Aridus II
™
cabinet before
performing any maintenance. Do not touch or short-circuit bare contacts.
Avoid using the Aridus II
™
if strong electromagnetic interference or radio
frequency interference is present. In environments with very low humidity,
high static charges may affect the stability of the analyte signal, causing a
transient drop in intensity within the proximity of the charged object.
Replacing Aridus II
™
Components
The following components for the Aridus II
™
System need to be replaced
periodically during normal usage. Failure to replace these components will
result in deterioration of analytical performance.
Sample Transfer Line: Teflon
®
-Lined PVC Tubing
The sample transfer line should be replaced when it becomes grossly
discolored or when it contains residues/condensation. See Chapter 6,
“Maintaining the Aridus II
™
System” for further details.
Peristaltic Pump Tubing: 3-Stop Gray/Gray 1.3mm I.D.
The peristaltic pump tubing that drains the PFA spray chamber should be
replaced whenever the tubing becomes flat or misshapen due to pump shoe
pressure. See Chapter 6, “Maintaining the Aridus II
™
System” for further
details.
Startup Procedure
1
If the Aridus II
™
has been turned off for an extended period of time, turn on the
AC power switch and allow the HEATER temperatures to reach operating
values and stabilize (approximately 5-10 minutes), purge the system with
argon sweep gas (setting of 3.0 L/min) and nitrogen (10 mL/min) for five
minutes.
2
Decrease the sweep gas flow (setting of 0.5 L/min) and nitrogen flow (0
mL/min).
3
Ignite the plasma according to standard operating procedures for the ICP-MS
instrument. Re-adjust Aridus II
™
operating parameters to the optimized
settings. If the system has not been optimized, see page 24.
WARNING