18 Maintenance and Inspection
18.2
18.
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GC-2010 Plus
18.2Inspection and Maintenance Intervals
Periodical inspection and maintenance are required to maintain the gas chromatograph in the
good condition.
The recommended inspection interval for each part is described below. Refer to each section for
details.
18.2.1 Glass insert
Inspect the glass insert before starting a series of analysis.
Take care of dirt and silica wool position and quantity.
An inser counter feature is available in the GC.
Refer to the diagnosis item list in “14.1 Standard Diagnosis”.
18.2.2 Septum
Replace the septum periodically to avoid the carrier gas leakage.
The guideline for replacement is 100 injection. (50 injections for thick needle.)
A septum counter feature is available in the GC.
Refer to diagnosis item list in “14.1 Standard Diagnosis”.
18.2.3 O-ring for glass insert
Replace the O-ring when replacing the glass insert or if there is a carries gas leak.
18.2.4 Graphite ferrule
Replace the graphite ferrule if a carries gas leak is not stopped by tightening.
Replace the ferrule if it is completely compressed.
18.2.5 Capillary column
Condition the column if it has not been used for a long time, if ghost peaks are present or if
baseline noise is high.
18.2.6 Flow controller
Condition or replace the carrier gas molecular sieve filter if the baseline is unstable.
Every 6 months, check the split flow line and the septum purge flow line traps and replace
any saturated traps.
18.2.7 Hydrogen flame ionization detector (FID)
Rinse or replace the igniter and the jet if ignition is not smooth, the flame often goes out dur-
ing the analysis or no peaks are obtained.
18.2.8 Cleaning the Unit
If the exterior unit surfaces become dirty, clean using a cloth with a neutral detergent.
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