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158
Troubleshooting and Maintenance Manual
7
Analyzers and Collision Cell
Mass axis offset
Mass offset also controls the mass assignment.
•
A higher offset yields higher mass assignment.
•
Mass offset generally affects peaks equally at all masses.
Quadrupole maintenance
The mass filter requires no periodic maintenance. It should not be removed
from the radiator. If
absolutely
necessary (that is, if the only alternative is
replacement), the quadrupole can be cleaned. Cleaning
must
be performed by
Agilent Technologies service personnel.
C A U T I O N
Never put the quadrupole in an ultrasonic cleaner.
Never change the physical orientation of the quadrupole mass filter.
The fused-quartz quadrupole is fragile and will break if dropped or handled roughly.
The material in the cusps of the quadrupole is very hygroscopic. If exposed to water,
the quadrupole must be dried very slowly to prevent damage.
Summary of Contents for 7000 Triple Quadrupole GC/MS
Page 24: ...24 Troubleshooting and Maintenance Manual 1 Introduction...
Page 50: ...50 Troubleshooting and Maintenance Manual 2 General Troubleshooting...
Page 122: ...122 Troubleshooting and Maintenance Manual 4 General Maintenance...
Page 144: ...144 Troubleshooting and Maintenance Manual 6 Vacuum System...
Page 182: ...182 Troubleshooting and Maintenance Manual 8 Electronics...
Page 213: ......
Page 214: ...Agilent Technologies Agilent Technologies Inc Printed in USA September 2009...