Agilent Technologies 7697A Instrucciones de funcionamiento

Agilent Technologies

Agilent 7697A

Headspace Sampler

Troubleshooting

Notices

No part of this manual may be reproduced

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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

G4556-90018

Edition

Third edition, January 2012

Second edition, November 2011

First edition, January 2011

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

联系电话：（800）820 3278

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 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 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

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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.

Agilent 7697A Troubleshooting 3

Contents

1 Concepts and General Tasks

Concepts 8

How to troubleshoot using this manual 8

The [Status] key 8

Error conditions 9

What Changed? 10

Keeping Configuration Settings Current 11

Sample loop size 11

Gas configuration 11

Column configuration 11

Headspace Sampler Logs 12

The Sequence log 12

The Event log 12

The Maintenance log 12

To View the Event Log, Sequence Log, or Maintenance Log 12

Information Customers Should Provide When Calling Agilent for

Service 13

2 Chromatographic Symptoms

General Information 16

Peaks Not Displayed/No Peaks 17

Retention Times Not Repeatable 19

Peak Areas Not Repeatable 20

Low Peak Area or Height (Low Sensitivity) 21

Contamination or Carryover 22

3 Log Entries and Errors

Sequence Log Entries 26

Event Log Entries (Errors) 28

Maintenance Log Entries 30

Tray Error Messages 31

4Leaks

Leak Check General Procedure 34

Flow Paths 36

4Agilent 7697A Troubleshooting

Checking for External Leaks 38

To Run the Restriction and Pressure Decay Test 40

If the test passes 41

If the test fails 42

To Run the Cross Port Leak Test 53

If the test passes 54

If the test fails 54

To Check for Leaks in the Transfer Line 58

5 Vial Handling

How the Headspace Sampler Handles Vials 60

No Vial Found in Gripper/Vial In Gripper 61

Vial Size Errors 62

Carousel Errors 63

Sample Probe Lifter Errors 64

Six Port Valve Errors 65

Shutter Errors (111 Vial Model) 66

Tray Lifter Errors (111 Vial Model) 67

Barcode Reader Errors 68

Tray Errors (111 Vial Model) 69

Gripper Errors (111 Vial Model) 70

Vial Breaks During Thermal Equilibration 71

6 Pressures and Flows

Flow and Pressure Shutdowns 74

Purge Flow Deviations 75

Vial Pressurization Setpoint Deviations 76

Carrier Gas Deviation or Shutdown 77

HS provides all carrier flow 77

HS provides additional flow during the injection 77

To resolve a carrier flow deviation or shutdown 78

7 Communications

Troubleshooting Headspace Sampler Communications 80

General information 80

Using DHCP 80

To Troubleshoot LAN Connectivity Issues 81

Agilent 7697A Troubleshooting 5

If the ping failed with “Request timed out” errors 83

If ping succeeds, but you still cannot connect 83

The GC Does Not Start After the HS Injects 85

8 Electronics

To Check the Headspace Sampler Power Configuration 88

To Perform the Instrument Self Test 89

Thermal Shutdowns 90

6Agilent 7697A Troubleshooting

Agilent 7697A Headspace Sampler

Troubleshooting

Agilent Technologies

Concepts and General Tasks

Concepts 8

Keeping Configuration Settings Current 11

To View the Event Log, Sequence Log, or Maintenance Log 12

Information Customers Should Provide When Calling Agilent for

Service 13

What Changed? 10

This section provides general information applicable for

troubleshooting problems found in the headspace sampler

system.

8Agilent 7697A Troubleshooting

1Concepts and General Tasks

Concepts

This manual provides symptoms associated with headspace

sampler (HS) hardware or associated chromatographic

output, Not Ready messages, and other common issues. It

also provides the corresponding tasks to perform should you

experience these symptoms.

Each section describes a problem and provides a bulleted list

of possible causes for you to troubleshoot. These lists are not

intended for use in the development of new methods. (For

help when developing methods, see the Advanced Operation

Guide.) Proceed with troubleshooting under the assumption

that method(s) are working properly.

This manual also includes common troubleshooting tasks as

well as a list of information needed prior to calling Agilent

for service.

How to troubleshoot using this manual

Use the following steps as a general approach to

troubleshooting:

1Observe the symptoms of the problem.

2Check the HS status displays and logs, especially the

sequence log and event log. Check the GC logs, events,

and display. If using a data system, check its logs also.

These logs may contain valuable information that directly

indicates the root cause of problem.

3Consider what may have changed recently. See “What

Changed?”.

4Consider whether the symptom can be caused by the GC.

5Look up the symptoms in this manual using the table of

contents or the search tool. Review the list of possible

causes of the symptom.

6Check each possible cause or perform a test that narrows

the list of possible causes until the symptom is resolved.

The [Status] key

Be sure to also use the [Status] and [Info] keys on the HS

keypad while using this troubleshooting information. These

keys will display additional useful information related to the

status of the HS and its components.

Concepts and General Tasks 1

Agilent 7697A Troubleshooting 9

Error conditions

If a problem occurs, a status message appears. If the

message indicates broken hardware, more information may

be available. Press [Status] to cycle through the status views.

Look for more detailed error messages.

10 Agilent 7697A Troubleshooting

1Concepts and General Tasks

What Changed?

When troubleshooting, keep the following points in mind:

•If the problem occurred suddenly, look for what changed.

Often sudden issues occur due to discrete events, such as

maintenance, changes in gas supplies, changing to a

different method or analysis, a defective part, and so

forth. Resolving a sudden change often involves changing

a consumable item, loading the correct method, or

replacing a defective part.

•If the problem happens gradually, for example, a steadily

rising baseline or gradual increase in ghost peak areas,

look for routine maintenance or changes in the method to

resolve the problem. These problems tend to be related to

the sample, sample preparation, the method, and the

consumables (such as the analytical column).

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