Agilent Technologies G2621-64000 Manuale utente

Installation Guide

Flame Ionization Detector on a 6850 GC

Accessory G2621

Agilent Technologies, Inc.

2850 Centerville Road

Wilmington, DE 19808-1610

USA

adaptation, or translation without

permission is prohibited, except as allowed

under the copyright laws.

Part number G2621-90107

First Edition, DEC 2000

Replaces Part No. G2621-90100 Operating

and Service Manual.

HP® is a registered trademark of

Hewlett-Packard Co.

Printed in USA

Safety Information

The Agilent Technologies Flame Ionization

Detector meets the following IEC

(International Electrotechnical Commission)

classifications: Safety Class 1, Transient

Overvoltage Category II, and Pollution

Degree 2.

This unit has been designed and tested in

accordance with recognized safety

standards and designed for use indoors. If

the instrument is used in a manner not

specified by the manufacturer, the

protection provided by the instrument may

be impaired. Whenever the safety protection

of the Agilent G2621 has been

compromised, disconnect the unit from all

power sources and secure the unit against

unintended operation.

Refer servicing to qualified service

personnel. Substituting parts or performing

any unauthorized modification to the

instrument may result in a safety hazard.

Disconnect the AC power cord before

removing covers. The customer should not

attempt to replace the battery or fuses in

this instrument.

Safety Symbols

Warnings in the manual or on the

instrument must be observed during all

phases of operation, service, and repair of

this instrument. Failure to comply with these

precautions violates safety standards of

design and the intended use of the

instrument. Agilent Technologies assumes

no liability for the customer’s failure to

comply with these requirements.

WARNING

A warning calls attention to a condition or

possible situation that could cause injury to

the user.

CAUTION

A caution calls attention to a condition or

possible situation that could damage or

destroy the product or the user’s work.

Sound Emission Certification for Federal

Republic of Germany

Sound pressure Lp < 68 dB(A)

During normal operation

At the operator position

According to ISO 7779 (Type Test)

Schallemission

Schalldruckpegel LP < 68 dB(A)

Am Arbeitsplatz

Normaler Betrieb

Nach DIN 45635 T. 19 (Typprüfung)

Agilent Technologies

Printed in USA Dec 2000

Agilent Part No. G2621-90107

Installing a Flame Ionization Detector on an

Agilent 6850 Gas Chromatograph

This kit contains:

Kit G2621-64000 Qty.

Flame ionization detector system 1

Performance evaluation sample kit 1

Nut warmer cup assembly 1

Nut warmer insulation 1

Wrist strap, disposable, large 1

Screw, M4 x12 mm, pan head 3

Installation sheet (this document) 1

Installing a Flame Ionization Detector on an Agilent 6850 Gas Chromatograph

The FID detector assembly is a factory-assembled, tested, and calibrated

unit. Disassembly of the unit is not required for installation.

Tools Required

Safety Information

Before continuing, read the safety information on your Agilent 6850 Gas

Chromatograph User Information CD-ROM.

Torx™T-20 driver

Flat blade screwdriver

Open end wrenches

Nutwarmer

Insulation

Screws

Ribbon cable

Heater/sensor cable

FID assembly

Ignitor cable

Flow module cable

Flow module

FID signal board

(3 pieces)

Installing a Flame Ionization Detector on an Agilent 6850 Gas Chromatograph

Prepare for Installation

WARNING Hydrogen gas is flammable and potentially explosive. Before replacing the

manifold, turn off the hydrogen gas at the source.

WARNING Before proceeding, turn off the oven and any heated zones and let them cool

down. Turn off all detector gases at their supply, then turn off the main

power switch and unplug the power cord.

1. Open the lid. If a column is installed, disconnect it at the detector end.

Remove the nut warmer, insulation, and capillary adapter, if present.

Close the lid.

2. Turn all gases off at their sources. Disconnect the carrier and detector

gas tubing from the back panel of the instrument.

ToBase - T

Local Talk

BNC

Disconnect gas supply tubing

from these fittings

Installing a Flame Ionization Detector on an Agilent 6850 Gas Chromatograph

Remove the Lid Top Cover

Remove the lid top cover.

Disconnect the Heater/Sensor Cable

1. Trace the detector heater/sensor cable to the wiring harness near the

injection part cooling fan.

2. Disconnect the cable at the connector.

Raise the Lid to the Service Position

1. Open the lid. Locate the counterbalance cam in the left rear corner

under the lid. Loosen the screw on the right side of the cam. This allows

the stop plate to drop down.

Lid top cover, without

valve box accessory

Remove T-20 Torx™

screws (8 places)

Remove detector

cover, if desired

Remove vent tubing,

if present

Installing a Flame Ionization Detector on an Agilent 6850 Gas Chromatograph

2. Raise the lid until it is stopped by the safety cable.

3. Raise the stop plate and tighten the screw to lock the lid in the upright

service position.

WARNING The lid is heavy. Always lock the lid when it is in the service position.

Stop plate

Screw

Counterbalance cam

Cam follower

Installing a Flame Ionization Detector on an Agilent 6850 Gas Chromatograph

Remove the Detector Electronics Cover

1. Loosen the two bottom screws on the detector electronics cover.

2. Remove the top screw on the cover.

3. Lift and remove the detector electronics cover.

Remove screw

Detector electronics cover

Loosen screws

Installing a Flame Ionization Detector on an Agilent 6850 Gas Chromatograph

4. Loosen the signal board clamp.

5. Unplug the signal board from the A/D converter board.

6. Disconnect the wiring from the signal board.

FID – Disconnect the ribbon cable. Unplug the ignitor cable. Pass both

cables through the hole to the top side of the lid.

The ribbon cable connector will not pass through the rubber grommet in

the hole. Use a small screwdriver to push the grommet to the top of the

lid; the cables will now fit through the hole.

Ribbon cable

Signal board

(FID shown)

Signal board clamp

A/D converter board

Installing a Flame Ionization Detector on an Agilent 6850 Gas Chromatograph

TCD –Unplug the two-wire switching valve cable at the connector. To

release the PRT and filament wires, press down on the orange tabs. Pass

the disconnected wires through the hole to the top side of the lid.

7. Lower the stop plate on the lid cam. Pull the lid forward until the cam

follower rests on the curved surface of the cam. Leave the stop plate in

the "down" position.

8. Close the lid.

Ribbon cable connector

Ignitor cable connector

Switching valve cable connector

PRT wires Filament wires

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