Discussion Category: GC Systems
Inlet cooling fan
Is there any place to find a detailed illustration of how to change the inlet cooling fan on a 6890 GC. I have searched Agilent manuals but cannot find any details for the inlet cooling fan.
Asked by
Instrument Specialist
Reply by
Dan Ste.Marie
Detailed instructions are given in the 6890 Service Manual for replacing both the inlet cooling fan and the pneumatics cooling fan (in the rear of the instrument) Both of these fans are very straightforward to replace and can be easily done without the manual. Just make sure you route the wiribng harness in the same fashion as it was originally installed. I have copied the relevent section fo rhe inlet cooling fan here:
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). Dan
Dan Ste.Marie
RJ2 Instrument Services
Erie, PA
www.rj2.biz
Reply by
Instrument Specialist
Thank-you, I did not see this in any of the manuals I have.
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