2Removing Covers
To Remove the Detector Top Cover
18 Maintaining Your GC
To Remove the Detector Top Cover
This cover protects the detectors, valve box, and valve assembly. To remove the detector top
cover:
1 Turn off the GC and unplug the power cord.
2 Remove the detector cover by raising the cover up, then firmly lift up on the right side of the
cover to free it from the GC. Set the cover aside.
3 When finished with the maintenance procedure, place the detector cover vertically on the
GC and insert the left side first, then gently snap in the right side onto the GC.
Be careful! With the power switch on, potentially dangerous voltages also exist:
• All electronics boards in the instrument.
•The internal wires and cables connected to these boards.
• The wires for the oven heater.
The covers shield these parts as the parts may be hot enough to cause burns. Never remove
a cover unless the instrument is unplugged.
Do not force the cover, either when installing it or closing it. This could break the plastic
parts.
Figure 2. 8860 GC covers
Detector cover
Electronics cover
Pneumatics cover
Injection
port cover
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