Agilent Technologies 7820A Manuel utilisateur

Agilent Technologies

Agilent 7820A

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 transla-

tion into a foreign language) without prior

agreement and written consent from Agi-

lent Technologies, Inc. as governed by

United States and international copyright

laws.

Manual Part Number

G4350-90014

Edition

Fifth edition, August 2016

Fourth edition, June 2015

Third edition, November 2014

Second edition, May 2011

First edition, March 2009

Printed in China

Agilent Technologies (Shanghai) Co., Ltd.

412 Ying Lun Road

Waigaoqiao Free Trade Zone

Shanghai 200131 P.R. China

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 7820A 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 Side Cover 20

To Remove the Electronics Cover 21

3 Maintaining Capillary Columns

Consumables and Parts for Columns 24

To Install a Capillary Column Hanger 26

To Install Capillary Column Clips 27

To Condition a Capillary Column 28

To Cut a Loop from a Column 31

To Reverse a Column and Bakeout Contaminants 32

4 Maintaining the Split/Splitless Inlet

Consumables and Parts for the Split/Splitless Inlet 36

Exploded Parts View of the Split/Splitless Inlet 39

To Install a Capillary Column with the Split/Splitless Inlet 40

To Change the Septum on the Split/Splitless Inlet 44

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

Inlet 46

To Change the Liner and O-Ring on the Split/Splitless Inlet 48

To Replace the Gold Seal on the Split/Splitless Inlet 50

To Replace the Filter in the Split Vent Line 52

To Clean the Split/Splitless Inlet 55

To Bakeout Contaminants from the Split/Splitless Inlet 57

4 Maintaining Your GC

5 Maintaining the Purged Packed Inlet

Consumables and Parts for the Purged Packed Inlet 60

Exploded Parts View of the Purged Packed Inlet 63

To Install a Capillary Column with the Purged Packed Inlet 64

To Change the Septum on the Purged Packed Inlet 68

To Clean the Septum Seat in the Purged Packed Inlet 70

To Install an Adapter on the Purged Packed Inlet 72

To Change the O-Ring on the Purged Packed Inlet 74

To Change the Glass Liner on the Purged Packed Inlet 75

To Install an Insulation Cup on the Purged Packed Inlet 77

To Clean the Purged Packed Inlet 78

To Bakeout Contaminants from the Purged Packed Inlet 80

To Install a Packed Metal Column 81

To Install a Packed Column Adapter on a Detector Fitting 83

To Install a Packed Glass Column 85

To Condition a Packed Column 88

To Install Ferrules on a Packed Metal Column 90

6 Maintaining the Packed Column Inlet

Consumables and Parts for the Packed Column Inlet 92

Exploded Parts View of the Packed Column Inlet 94

To Change the Septum on the Packed Column Inlet 95

To Clean the Septum Seat in the Packed Column Inlet 97

To Install an Adapter on the Packed Column Inlet 99

To Change the O-Ring on the Packed Column Inlet 101

To Change the Glass Liner on the Packed Column Inlet 102

To Install an Insulation Cup on the Packed Column Inlet 104

To Clean the Packed Column Inlet 105

To Bakeout Contaminants from the Packed Column Inlet 107

To Install a Packed Metal Column 108

To Install a Packed Column Adapter on a Detector Fitting 110

To Install a Packed Glass Column 112

To Condition a Packed Column 115

To Install Ferrules on a Packed Metal Column 117

Maintaining Your GC 5

7 Maintaining the COC Inlet

Consumables and Parts for the COC Inlet 120

Exploded Parts View of the COC Inlet 124

To Install a Capillary Column with the COC Inlet 125

To Check the Needle-to-Column Size on the COC Inlet 128

To Change a Septum on the COC Inlet 130

To Install an Insert on the COC Inlet 132

To Clean the COC Inlet 134

To Replace the 7693A Injector Needle Support Guide 136

To Replace the Needle Support Assembly in a 7683B Injector 137

To Replace a Needle in a Syringe 140

To Replace the Fused Silica Needle in a Syringe for the COC Inlet 141

To Bakeout Contaminants from the COC Inlet 143

8 Maintaining the FID

Consumables and Parts for the FID 146

Exploded Parts Views of the FID 149

Selecting an FID Jet 151

To Attach a Capillary Column Adapter on an Adaptable FID 153

To Install a Capillary Column in the FID 155

To Replace the FID Collector Assembly 158

To Replace an FID Jet 161

To Perform Maintenance on the FID Collector Assembly 165

To Check the FID Leakage Current 173

To Check the FID Baseline 174

To Install the FID Insulation Cup Assembly (Adaptable FID Only) 175

To Install the Optional FID PTFE Chimney Insert 177

To Bakeout the FID 178

9 Maintaining the TCD

Consumables and Parts for the TCD 182

To Install a Capillary Column in the TCD 184

To Install the Optional TCD Capillary Column Adapter 186

To Install a Capillary Column with the Optional TCD Capillary Column

Adapter 187

6 Maintaining Your GC

To Bakeout Contaminants from the TCD 190

10 Maintaining the µECD

Important Safety Information About the µECD 192

Consumables and Parts for the µECD 194

Exploded Parts View of the µECD 196

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

Makeup Gas Adapter 197

To Install a Capillary Column in the µECD 200

To Install the Insulating Cup for the µECD 203

To Bakeout the µECD 205

11 Maintaining the NPD

Consumables and Parts for the NPD 208

Exploded Parts View of the NPD 211

Selecting an NPD Jet 212

To Attach a Capillary Column Adapter on an Adaptable NPD 214

To Install a Capillary Column in the NPD 216

To Replace the NPD Bead Assembly 219

To Maintain the NPD Collector, Ceramic Insulators, and Jet 224

To Check the NPD Leakage Current 230

To Bakeout the NPD 231

12 Maintaining the FPD+

Consumables and Parts for the FPD+234

Exploded Parts View of the FPD+236

To Install a Packed Column Adapter in the FPD+237

To Attach a Capillary Column to the FPD+239

To Change the FPD+Wavelength Filter 241

To Remove the FPD+Cover 244

To Replace the FPD+Ignitor 246

To Install the FPD+Cover 248

Cleaning the FPD+Brazement 249

13 Maintaining the G3435A/G3436A FPD

Consumables and Parts for the FPD 252

Maintaining Your GC 7

Exploded Parts View of the FPD 254

To Install a Capillary Column Adapter in the FPD 255

To Attach a Capillary Column to the FPD 257

To Change the FPD Wavelength Filter 259

To Remove the FPD Vent Tube 262

To Replace the FPD Ignitor 264

To Install the FPD Vent Tube and Cover 266

14 Maintaining the PCM

Consumables and Parts for the PCM 268

Calibrating the PCM Interface 269

Installing or Replacing Frits in the PCM 270

15 Maintaining a Valve

Consumables and Parts for Valves 274

Exploded Parts View of GC Rotary Valves 275

To Replace a Gas Sampling Valve Loop 276

To Align a Rotary Valve Rotor 278

To Replace a Rotary Valve in the Valve Box 279

To Remove the Upper Valve Box 282

To Install the Upper Valve Box 284

A Swagelok Connections

Making Swagelok Connections 288

Using a Swagelok Tee 292

8 Maintaining Your GC

Agilent 7820A 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 7820A 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

7820A 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

•Packed Column Inlet

•COC Inlet

•FID

•TCD

•µECD

•NPD

•FPD+

•FPD

•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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