Agilent Technologies G3485A User manual

Agilent Technologies

Agilent G3485A Third Detector Box

For the Agilent 7890A Gas Chromatograph

Installation Instructions

Parts Supplied

Table 1 Parts supplied

Description Quantity

Third detector box assembly 1

Flow module back-up plate 1

Screw, M4 × 0.7 25mm (2-for flow frame top, 1-for flow module backup plate) 3

Screw, machine, M4 × 0.7 12mm (4-for flow frame bottom, 3- for flow module

backup plate)

2Installation Instructions

Agilent G3485A Third Detector Box

Tools Required

•T-20 Torx drivers

Installation Procedure

This procedure explains how to install the third detector box on the Agilent

7890A Gas Chromatograph (GC).

Prepare the GC

1Turn off the GC and unplug the power cord.

2Unsnap the pneumatics cover by pressing the black clips on the sides of the

cover. Lift the cover up and off.

3Remove the left side cover by loosening the two top screws, sliding the

panel towards rear, and lifting the cover off. This cover and fastening

screws will no longer be used when the G3485A Third Detector Box is

installed on the GC.

Remove the 3rd detector box side cover

1Remove the two M4 x 0.7 10mm long flathead screws from the bottom of the

3rd detector box side cover.

2Remove the cover by lifting it off. Save the cover and screws to reattach the

cover when the new equipment is installed inside the box. Do not plug in

the GC without the box side cover plate installed.

Optionally install the flow module back-up plate

Please skip this section unless you are adding a manual flow regulator in

the upper position of the third detector box. This bracket can interfere with

the installation of other Agilent accessories.

1Carefully remove the gray label plate covering the regulator opening in the

top front location of the plastic bezel. Try using your thumb to push out the

label from the regulator opening of the plastic bezel inside the detector box.

2Place the flow module back-up plate at the top inside regulator position of

the plastic bezel and secure with (3) M4 x 12mm screws through the bezel.

This installation is similar to the factory installed back-up plate at the lower

regulator position in the bezel.

WARNING Refer to the Safety Manual that came with your Agilent 7890A Gas

Chromatograph for hazards that may exist when maintaining your

instrument.

Agilent G3485A Third Detector Box

Installation Instructions 3

3Attach the side bracket of the flow module back-up plate to the stand-off

using an M4 x 25 mm screw.

4Attach the previously removed gray label plate to the front bezel.

Attach the third detector flow frame

1Orient the third detector box with the GC by positioning the circular

cutouts at the bottom edge of the frame with the four screw holes at bottom

edge of the GC.

2Using a Torx driver, attach the frame first with two M4 × 0.7 × 25mm long

screws at the top edge of the frame and then with four M4 × 0.7 × 12mm

long screws through the circular cut outs at the bottom edge of the frame.

Figure 1 Third detector flow frame mounted to GC

Restore the GC to operating condition

1Install the third detector side cover using two M4 × 10mm long Torx

flathead screws.

2Replace the top panel.

3Plug in the GC and turn on the power.

M4 x 25 mm top

screw locations

M4 x 12 mm bottom

screw locations

Agilent Technologies

Warranty

The material contained in this document is provided “as is,” and is subject to being changed, without notice,

in future editions. Further, to the maximum extent permitted by applicable law, Agilent disclaims all warran-

ties, either express or implied, with regard to this manual and any information contained herein, including

but not limited to the implied warranties of merchantability and fitness for a particular purpose. Agilent shall

not be liable for errors or for incidental or consequential damages in connection with the furnishing, use, or

performance of this document or of any information contained herein. Should Agilent and the user have a

separate written agreement with warranty terms covering the material in this document that conflict with

these terms, the warranty terms in the separate agreement shall control.

©Agilent Technologies, Inc. 2007

Printed in USA and China

First edition, July 2007

Agilent Technologies, Inc.

2850 Centerville Road

Wilmington, DE 19808-1610 USA

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