Hardware manual

4-14 Agilent 7500 Series ICP-MS Hardware Manual
4Maintenance
Fuse
The fuse is not replaceable by the user because it is inside of the enclosure. If
you believe the fuse is blown, please contact your local Agilent Technologies
office.
Cleaning the Frame
When the surface of the Agilent 7500 Mainframe becomes dirty, wipe it with a
dry cloth.
Sample Introduction
• Replacing the peristaltic pump tubing.
• Cleaning and exchanging of the nebulizer, spray chamber, and end cap.
It is important to always keep the sample introduction parts clean. Check the
following points before maintenance.
If there is a memory of a previously analyzed sample (a previous sample still
remains without being replaced), it is recommended to introduce a 5%
contamination- free Nitric Acid solution in Analysis mode to clean the sample
introduction parts. Set peristaltic pump speed at 0.3 to 0.5 rps.
After cleaning, check the memory in the tuning window. If there is no memory,
perform maintenance on the sample introduction parts, which is explained in
the following section.
CAUTION
Handle fragile glass parts carefully.
NOTE
Pure water used for cleaning is indicated as water that has been generated using the
ion-exchange method and a membrane filter, and has an electrical resistance of at least
18 MΩ.