Maintaining Your GC 3
Contents
1 About Maintaining the GC
Overview of Maintenance 10
Tools and Materials Required for Maintenance 11
Maintenance Methods for the 7890 Series GC 13
Safety Information 15
Finding a Replacement Part Number 16
2 Removing Covers
To Remove the Detector Top Cover 18
To Remove the Pneumatics Cover 19
To Remove the Electronics Cover 20
3 Maintaining the GC
Consumables and Parts for General GC Maintenance 22
Parts Identification 24
To Change the Hydrogen Sensor Calibration Gas Cylinder 25
Using the removable oven door 27
4 Maintaining Capillary Columns
Consumables and Parts for Columns 30
To Install a Capillary Column Hanger 32
To Install Capillary Column Clips 33
To Condition a Capillary Column 34
To Cut a Loop from a Column 37
To Reverse a Column and Bakeout Contaminants 38
To Attach a Capillary Column Using SilTite Metal Fittings 40
To Disconnect Fused Silica Tubing From a SilTite Fitting 42
5 Maintaining the Split/Splitless Inlet
Consumables and Parts for the Split/Splitless Inlet 44
Exploded Parts View of the Split/Splitless Inlet 47
To Install a Capillary Column with the Split/Splitless Inlet 48
To Change the Septum on the Split/Splitless Inlet 52
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