410 Covers and Fans
Removing the injection port fan cover
16 of 20
Jun 2001
Mainframe
Agilent 6890 Gas Chromatograph Service Manual
Removing the injection port fan cover
The injection port fan cover encloses the fan that draws air through the 6890
GC injection ports.
1. Loosen the Torx T-20 screw on the right side of the fan cover.
2. Slide the cover slightly to the right to disengage it from the left mounting
post and lift the cover up and off.
3. Reassembly is the reverse of removal.
Removing the injection port fan
The injection port fan cools the injection ports by drawing air from under the
inlet carrier, across the installed inlets.
1. Remove the injection port fan cover as described in this section.
2. Disconnect the fan’s wiring harness from the main wiring harness, to
right of the fan on top of the oven.
3. Grasp the fan and snap it up and out of the inlet carrier.
Note When installing a new fan, be sure to install it so that it draws air from the
front of the GC, through the inlet carrier and out towards the rear of the GC.
The fan has raised arrows on its side indicating the direction of fan rotation
and the direction of air flow. On a correctly installed fan, one arrow should
point up and one to the right (when facing the front of the GC).
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