How To Know When Your System Needs Maintenance; Diagnostics And Corrective Actions - Thermo Scientific TSQ 8000 Evo User Manual

How to Know When Your System Needs Maintenance

Thermo Scientific
Table 2. Diagnostics and Corrective Actions
Diagnostic Cause of Failure
Communication Unknown
Check
Frequency Check RF Dip is not correct
SRM Efficiency Collision gas is not
Check supplied correctly
Q1 is poorly tuned
Lens Continuity Ion source not inserted
Check properly
Lens plate and/or
springs are damaged
A wire is disconnected
or shorted inside the
manifold
Typically, you will notice that your instrument needs maintenance when you are analyzing
your data on the computer. Some of the most common reasons and indications are as follows:
• Contamination—Excessive background in your mass spectra usually indicates that your
instrument is contaminated. Use the mass spectrum in the table below to understand the
origin of the contamination. Cleaning solvent peaks usually indicate that the ion source
cartridge was installed before it completely dried.
• Fingerprints—A series of mass peaks in your data that are 14 amu apart usually indicates
fingerprint or other hydrocarbon contamination. To avoid fingerprints, wear clean,
lint-free gloves when performing any type of maintenance on a component in the vacuum
manifold of the instrument.
• Air Leaks—Higher than normal vacuum pressure or poor sensitivity usually indicates an
air leak. Check the last o-ring or ferrule that you installed.
How to Know When Your System Needs Maintenance
Corrective Action
Contact your Field Service Engineer.
Run a full tune that will correct for any RF
dip problems.
Ensure source cartridge is installed.
Contact your Field Service Engineer.
Check collision gas tank and pressure.
Run an EI SRM tune (not a quick tune).
Remove and reinsert ion source.
Contact your Field Service Engineer.
Contact your Field Service Engineer.
TSQ 8000 Evo User Guide
7
Troubleshooting
117