General Troubleshooting 2
Troubleshooting and Maintenance Manual 33
• Excessive pressure in the front or rear chamber
• Dirty ion source
• Air leaks between chambers
• Poor filament operation
• Detector (HED electron multiplier) is not working correctly
• Incorrect mass filter polarity
• Collision cell voltage
* This could cause a fault condition in the GC that would prevent the GC
from operating.
Poor repeatability
• Dirty syringe needle
• Dirty GC inlet
• Leaking GC inlet*
• Injection is too large
• Loose column connections
• Variations in pressure, column flow, and temperature
• Dirty ion source
• Loose connections in the analyzer
• Ground loops
* This could cause a fault condition in the GC that would prevent the GC
from operating.
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