Operating Manual Instruction Manual

9 - 1
PN 074-519-P1C
3000 Micro GC Operating Manual
Chapter 9
Troubleshooting
9.1 Symptom, Cause, and Remedy Tables
The following tables identify common symptoms, causes and remedies. For
additional information, or if the symptom does not appear in the tables, see section
9.2 on page 9-10.
9.1.1 Common Chromatographic Problems
Table 9-1 Common chromatographic problems
Symptom Possible Cause Remedy
Poor sensitivity Insufficient Sample Pump
time
In EZ IQ, increase the Sample Pump time to
at least 15 seconds. If sufficient sample is
available, increase to between 30 to 60
seconds.
Insufficient Inject Time In EZ IQ, increase the Inject Time.
Backflush Time set too
early (if applicable)
Increase the Backflush Time until all peaks of
interest appear on the chromatogram.
Contamination Run a bakeout to clean the columns. Refer to
section 9.2.2.1 on page 9-18.
Instrument not sufficiently
warmed up
Allow at least 3 minutes for 3000 Micro GC to
warm up. Conduct 10 runs and calibrate on
the last run.
External leak Check carrier gas lines using a leak detector.
Tighten all fittings.
Broken or damaged O-ring Contact INFICON.
Loose fitting Tighten all fittings and connections.
Low carrier gas pressure Ensure the carrier gas is supplying at least
78 PSI, and no more that 82 PSI.
CAUTION
Exceeding 82 PSI for the
carrier gas pressure may
damage 3000 Micro GC.