Agilent Technologies Agilent 7890 Series Mode d’emploi

Agilent Technologies

Agilent 7890 Series

Gas Chromatograph

Maintaining Your GC

Notices

No part of this manual may be reproduced

in any form or by any means (including

electronic storage and retrieval or

translation into a foreign language) without

prior agreement and written consent from

Agilent Technologies, Inc. as governed by

United States and international copyright

laws.

Manual Part Number

G3430-90052

Edition

Third edition, September 2014

Second edition, December 2013

First edition, January 2013

Printed in USA

Agilent Technologies, Inc.

2850 Centerville Road

Wilmington, DE 19808-1610 USA

安捷伦科技（上海）有限公司

上海市浦东新区外高桥保税区

英伦路 412 号

联电话：（800）820 3278

Warranty

The material contained in this docu-

ment is provided “as is,” and is sub-

ject to being changed, without notice,

in future editions. Further, to the max-

imum extent permitted by applicable

law, Agilent disclaims all warranties,

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 par-

ticular purpose. Agilent shall not be

liable for errors or for incidental or

consequential damages in connection

with the furnishing, use, or perfor-

mance 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 sep-

arate agreement shall control.

Safety Notices

CAUTION

A CAUTION notice denotes a hazard. It

calls attention to an operating

procedure, practice, or the like that, if

not correctly performed or adhered to,

could result in damage to the product

or loss of important data. Do not

proceed beyond a CAUTION notice

until the indicated conditions are fully

understood and met.

WARNING

A WARNING notice denotes a hazard.

It calls attention to an operating

procedure, practice, or the like that, if

not correctly performed or adhered to,

could result in personal injury or

death. Do not proceed beyond a

WARNING notice until the indicated

conditions are fully understood and

met.

Maintaining Your GC 3

Contents

1 About Maintaining the GC

Overview of Maintenance 10

Tools and Materials Required for Maintenance 11

Maintenance Methods for the 7890 Series GC 13

Safety Information 15

Finding a Replacement Part Number 16

2 Removing Covers

To Remove the Detector Top Cover 18

To Remove the Pneumatics Cover 19

To Remove the Electronics Cover 20

3 Maintaining the GC

Consumables and Parts for General GC Maintenance 22

Parts Identification 24

To Change the Hydrogen Sensor Calibration Gas Cylinder 25

Using the removable oven door 27

4 Maintaining Capillary Columns

Consumables and Parts for Columns 30

To Install a Capillary Column Hanger 32

To Install Capillary Column Clips 33

To Condition a Capillary Column 34

To Cut a Loop from a Column 37

To Reverse a Column and Bakeout Contaminants 38

To Attach a Capillary Column Using SilTite Metal Fittings 40

To Disconnect Fused Silica Tubing From a SilTite Fitting 42

5 Maintaining the Split/Splitless Inlet

Consumables and Parts for the Split/Splitless Inlet 44

Exploded Parts View of the Split/Splitless Inlet 47

To Install a Capillary Column with the Split/Splitless Inlet 48

To Change the Septum on the Split/Splitless Inlet 52

4Maintaining Your GC

To Clean the Septum Seat in the Insert Assembly of the Split/Splitless

Inlet 54

To Change the Liner and O-Ring on the Split/Splitless Inlet 56

To Replace the Gold Seal on the Split/Splitless Inlet 59

To Replace the Filter in the Split Vent Line for the Split/Splitless Inlet 61

To Clean the Split/Splitless Inlet 64

To Bakeout Contaminants from the Split/Splitless Inlet 66

6 Maintaining the Purged Packed Inlet

Consumables and Parts for the Purged Packed Inlet 68

Exploded Parts View of the Purged Packed Inlet 71

To Install a Capillary Column with the Purged Packed Inlet 72

To Change the Septum on the Purged Packed Inlet 77

To Clean the Septum Seat in the Purged Packed Inlet 79

To Install an Adapter on the Purged Packed Inlet 81

To Change the O-Ring on the Purged Packed Inlet 83

To Change the Glass Liner on the Purged Packed Inlet 84

To Install an Insulation Cup on the Purged Packed Inlet 86

To Clean the Purged Packed Inlet 87

To Bakeout Contaminants from the Purged Packed Inlet 89

To Install a Packed Metal Column 90

To Install a Packed Column Adapter on a Detector Fitting 92

To Install a Packed Glass Column 94

To Condition a Packed Column 97

To Install Ferrules on a Packed Metal Column 99

7 Maintaining the COC Inlet

Consumables and Parts for the COC Inlet 102

Exploded Parts View of the COC Inlet 106

To Install a Capillary Column with the COC Inlet 107

To Check the Needle-to-Column Size on the COC Inlet 110

To Change a Septum on the COC Inlet 112

To Install an Insert on the COC Inlet 114

To Clean the COC Inlet 116

Maintaining Your GC 5

To Replace the 7693A Injector Needle Support Guide 118

To Replace the Needle Support Assembly in a 7683B Injector 119

To Replace a Needle in a Syringe 122

To Replace the Fused Silica Needle in a Syringe for the COC Inlet 123

To Bakeout Contaminants from the COC Inlet 125

8 Maintaining the MMI

Consumables and Parts for the MMI 128

Exploded Parts View of the MMI 131

To Install the Column Nut Adapter 132

To Install a Capillary Column with the MMI 133

To Change the Septum on the MMI 137

To Clean the Septum Seat in the Insert Assembly of the MMI 139

To Change the Liner and O-Ring on the MMI 141

To Replace the Filter in the Split Vent Line for the MMI 144

To Clean the Multimode Inlet 147

To Bakeout Contaminants from the MMI 149

9 Maintaining the PTV Inlet

Consumables and Parts for the PTV Inlet 152

Exploded Parts View of the PTV Inlet 154

To Install a Capillary Column with the PTV Inlet 155

To Clean the Septumless Head on the PTV Inlet 158

To Replace the Septumless Head PTFE Ferrule on the PTV Inlet 161

To Change the Septum on the PTV Inlet 163

To Clean the Septum Seat in the Septum Head Assembly of the PTV

Inlet 165

To Change the Liner on the PTV Inlet 167

To Replace the Inlet Adapter for the PTV Inlet 170

To Replace the Filter in the Split Vent Line for the PTV Inlet 172

To Bakeout Contaminants from the PTV Inlet 175

10 Maintaining the VI

Consumables and Parts for the VI 178

Exploded Parts View of the VI 180

6Maintaining Your GC

To Install a Capillary Column with the VI 181

To Remove the VI Interface 185

To Clean the VI 187

To Install the VI Interface 189

To Replace the Filter in the Split Vent Line for the VI 190

To Bakeout Contaminants from the VI Inlet 193

11 Maintaining the FID

Consumables and Parts for the FID 196

Exploded Parts Views of the FID 199

Selecting an FID Jet 201

To Attach a Capillary Column Adapter on an Adaptable FID 203

To Install a Capillary Column in the FID 205

To Replace the FID Collector Assembly 209

To Replace an FID Jet 212

To Perform Maintenance on the FID Collector Assembly 216

To Check the FID Leakage Current 224

To Check the FID Baseline 225

To Install the FID Insulation Cup Assembly (Adaptable FID Only) 226

To Install the Optional FID PTFE Chimney Insert 228

To Bakeout the FID 229

12 Maintaining the TCD

Consumables and Parts for the TCD 232

To Install a Capillary Column in the TCD 234

To Install the Optional TCD Capillary Column Adapter 236

To Install a Capillary Column with the Optional TCD Capillary Column

Adapter 237

To Bakeout Contaminants from the TCD 240

13 Maintaining the uECD

Important Safety Information About the uECD 242

Consumables and Parts for the uECD 244

Exploded Parts View of the uECD 246

Maintaining Your GC 7

To Replace the uECD Fused Silica Indented Mixing Liner and Install the

Makeup Gas Adapter 247

To Install a Capillary Column in the uECD 251

To Install the Insulating Cup for the uECD 254

To Bakeout the uECD 256

14 Maintaining the NPD

Consumables and Parts for the NPD 260

Exploded Parts View of the NPD 263

Selecting an NPD Jet 264

To Attach a Capillary Column Adapter on an Adaptable NPD 266

To Install a Capillary Column in the NPD 268

To Replace the NPD Bead Assembly 272

To Maintain the NPD Collector, Ceramic Insulators, and Jet 279

To Check the NPD Leakage Current 285

To Bakeout the NPD 286

15 Maintaining the FPD+

Consumables and Parts for the FPD+290

Exploded Parts View of the FPD+292

To Install a Packed Column Adapter in the FPD+293

To Attach a Capillary Column to the FPD+295

To Cha n g e the FP D +Wavelength Filter 297

To Rem o ve t h e FPD +Cover 300

To Replace the FPD+Ignitor 302

To Ins t all t h e FPD +Cover 304

Cleaning the FPD+Brazement 305

16 Maintaining the G3435A/G3436A FPD

Consumables and Parts for the FPD 308

Exploded Parts View of the FPD 310

To Install a Capillary Column Adapter in the FPD 311

To Attach a Capillary Column to the FPD 313

To Change the FPD Wavelength Filter 315

To Remove the FPD Vent Tube 318

8Maintaining Your GC

To Replace the FPD Ignitor 320

To Install the FPD Vent Tube and Cover 322

17 Maintaining the Aux EPC

Consumables and Parts for the Aux EPC 324

Installing or Replacing Frits in the Aux EPC 326

18 Maintaining the PCM

Consumables and Parts for the PCM 330

Calibrating the PCM Interface 331

Installing or Replacing Frits in the PCM 332

19 Maintaining a Valve

Consumables and Parts for Valves 336

Exploded Parts View of GC Rotary Valves 337

To Replace a Gas Sampling Valve Loop 338

To Align a Rotary Valve Rotor 340

To Replace a Rotary Valve in the Valve Box 341

To Remove the Upper Valve Box 344

To Install the Upper Valve Box 346

20 Swagelok Connections

Making Swagelok Connections 350

Using a Swagelok Tee 354

Agilent 7890 Series Gas Chromatograph

Maintaining Your GC

Agilent Technologies

About Maintaining the GC

Overview of Maintenance 10

Tools and Materials Required for Maintenance 11

Maintenance Methods for the 7890 Series GC 13

Safety Information 15

Finding a Replacement Part Number 16

This section provides an overview of the maintenance

procedures included in this document. It also lists the tools

needed for routine maintenance and the safety information

one should be aware of before performing a maintenance

task.

10 Maintaining Your GC

1About Maintaining the GC

Overview of Maintenance

This manual details the routine tasks needed to maintain the

7890 Series Gas Chromatograph (GC). The procedures

assume a basic knowledge of tool use and of GC operation.

Readers are, for example, expected to know how to:

•Safely turn devices on and off

•Load methods

•Change component temperatures, flows, and pressures

•Make typical pneumatic connections using Swagelok and

other standard fittings

•Reset GC service counters

Where to find a procedure

Included in this manual are chapters on maintaining the

following GC components:

•Capillary Columns

•Split/Splitless Inlet

•Purged Packed Inlet

•COC Inlet

•Multimode Inlet

•PTV Inlet

•Volatiles Inlet (VI)

•FID

•TCD

•uECD

•NPD

•FPD+

•FPD

•Auxiliary EPC

•PCM

•Valves

Each chapter includes:

•A list of the most commonly used consumables and parts

for the component

•An exploded parts view of the component

•Detailed procedures for routine maintenance tasks

associated with the component

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