Agilent Technologies 7200 Manuale operativo

Agilent Technologies

Agilent 7200

Accurate-Mass/Q-TOF

GC/MS System

Troubleshooting and

Maintenance Manual

2 Troubleshooting and Maintenance Manual

Notices

No part of this manual may be reproduced in

any form or by any means (including elec-

tronic storage and retrieval or translation

into a foreign language) without prior agree-

ment and written consent from Agilent

Technologies, Inc. as governed by United

States and international copyright laws.

Manual Part Number

G3850-90009

Edition

First Edition, August 2014

Printed in USA

Agilent Technologies, Inc.

5301 Stevens Creek Boulevard

Santa Clara, CA 95051

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 connec-

tion with the furnishing, use, or per-

formance 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.

Troubleshooting and Maintenance Manual 3

Contents

1 Introduction

Abbreviations Used 8

The 7200 Accurate-Mass Quadrupole Time-of-Flight GC/MS

System 10

7200 Accurate-Mass Q-TOF GC/MS Description 12

Side Panel AC Power Connectors 13

Back Panel Connectors 14

Interfacing Start Events to External Devices 15

Remote control processor 15

Remote start signals 15

System ready 15

Start run input 16

Important Safety Warnings 17

Safety and Regulatory Certifications 20

Intended Use 23

Cleaning/Recycling the Product 23

Moving or Storing the MS 23

2 General Troubleshooting

Troubleshooting Tips and Tricks 26

General Symptoms 27

Chromatographic Symptoms 29

Mass Spectra General Symptoms 34

Pressure Symptoms 36

Temperature Symptoms 38

4 Troubleshooting and Maintenance Manual

Common Types of Errors 40

Air Leaks 45

Contamination 46

3 CI Troubleshooting

Common CI-Specific Problems 50

Troubleshooting Tips and Tricks 51

Air Leaks 52

Pressure-Related Symptoms 55

Signal-Related Symptoms 58

Tuning-Related Symptoms 64

The CI ion source is dirty 65

Air leak 65

4 General Maintenance

Before Starting 68

Scheduled maintenance 68

Tools, spare parts, and supplies 69

High voltage precautions 69

Dangerous temperatures 69

Chemical residue 70

Electrostatic discharge 71

To Refill the EI Calibration Vial 72

Materials needed 72

Refill 72

To Refill the IRM Vial 74

Materials needed 74

Procedure 74

To Connect the GC Nitrogen Gas Source to the Collision Cell 76

Troubleshooting and Maintenance Manual 5

Materials needed 76

Procedure 76

To Replace the Seals in the RIS Probe 77

Materials needed 77

Procedure 77

To Separate the GC from the MS 79

Materials needed 79

Procedure 79

To Position the GC Next to the MS 82

Procedure 82

To Move or Store the MS 83

Materials needed 83

Procedure 83

To Access the Left Side Lifting Handle 86

Materials needed 86

Procedure 87

5 CI Maintenance

To Minimize Foreline Pump Damage from Ammonia 90

To Replace the Methane/Isobutane Gas Purifier 91

To Clean the Reagent Gas Supply Lines 92

To Refill the CI Calibration Vial 93

Materials needed 93

Refill 93

6VacuumSystem

Overview 96

Maintaining the Vacuum System 97

Periodic maintenance 97

Other procedures 97

6 Troubleshooting and Maintenance Manual

Vacuum System Components 97

Common Vacuum System Problems 98

Foreline Pump 99

To check the oil mist filter 99

To check the foreline pump fluid level 100

To add foreline pump fluid 100

To replace the foreline pump fluid 101

Side Plate 104

Vacuum Seals 104

Calibration Valves 105

EI Calibration Valve 105

CI Calibration Valve 106

IRM Calibration Valves 107

7ReplacementParts

To Order Parts 110

Electronics 111

Vacuum System 116

Analyzer 121

RIS Manifold 130

GC/MS Interface 132

Consumables and Maintenance Supplies 133

Agilent 7200 Accurate-Mass Q-TOF GC/MS System

Troubleshooting and Maintenance Manual

Agilent Technologies

Introduction

Abbreviations Used 8

The 7200 Accurate-Mass Quadrupole Time-of-Flight GC/MS System 10

7200 Accurate-Mass Q-TOF GC/MS Description 12

Side Panel AC Power Connectors 13

Interfacing Start Events to External Devices 15

Important Safety Warnings 17

Safety and Regulatory Certifications 20

Intended Use 23

Cleaning/Recycling the Product 23

Moving or Storing the MS 23

This section provides general information about the 7200 Accurate-Mass

Quadrupole Time-of-Flight (Q-TOF) GC/MS System, including a hardware

description and general safety warnings.

8 Troubleshooting and Maintenance Manual

1Introduction

Abbreviations Used

The abbreviations in Table 1 are used in discussing this product. They are

collected here for convenience.

Table 1 Abbreviations

Abbreviation Definition

AC Alternating current

ALS Automatic liquid sampler

BFB Bromofluorobenzene (calibrant)

CC Collision cell

CI Chemical ionization

DC Direct current

DFTPP Decafluorotriphenylphosphine (calibrant)

DIP Direct insertion probe

EI Electron impact

EPC Electronic pneumatic control

eV Electron volt

GC Gas chromatograph

id Inside diameter

IRM Internal Reference Mass

LAN Local Area Network

m/z Mass to charge ratio

MFC Mass flow controller

MS Mass spectrometer

MS1 Front quadrupole

NCI Negative chemical ionization

OFN Octafluoronaphthalene (sample)

Introduction 1

Troubleshooting and Maintenance Manual 9

PCI Positive chemical ionization

PFDTD Perfluoro-5,8-dimethyl-3,6,9-trioxydodecane (calibrant)

PFET 2,4,6-tris (Pentafluoroethyl)-1,3,5-triazine

PFTBA Perfluorotributylamine (calibrant)

Q-TOF Quadrupole time-of-flight

Quad Quadrupole mass filter

RF Radio frequency

RFPA Radio frequency power amplifier

TOF Time-of-flight

Torr Unit of pressure, 1 mm Hg

Turbo Turbomolecular vacuum pump

Table 1 Abbreviations (continued)

Abbreviation Definition

10 Troubleshooting and Maintenance Manual

1Introduction

The 7200 Accurate-Mass Quadrupole Time-of-Flight GC/MS

System

The 7200 Accurate-Mass Quadrupole Time-of-Flight (Q-TOF) GC/MS System is

a standalone capillary GC detector for use with the Agilent 7890 Series gas

chromatograph. The 7200 Q-TOF features:

•Three turbomolecular vacuum pumps

•Rotary vane foreline pump

•Independently MS-heated EI or CI ion source

•Removable ion source (RIS) probe with bayonet and cooling chamber, which

allows quick change from EI to CI source with minimal loss of vacuum in

the instrument

•Independently MS-heated hyperbolic quadrupole mass filter, which can be

heated to high temperatures, minimizing the contamination typical with

low temperature analyses

•Single hexapole collision cell

•Vacuum-insulated flight tube with dual-stage ion mirror

•Fast electronics, allowing fast sampling rates

•Analog to digital detector

•Independently GC-heated GC/MS interface with automatic retraction

during source removal

Physical description

The 7200 Q-TOF GC/MS is approximately 48 cm high, 71 cm wide, and 89 cm

deep. The flight tube extends 84 cm up over the top of the instrument. The RIS

probe handle, when attached, extends 48 cm from the front of the instrument.

The weight of the instrument is 152 kg for the turbo pump mainframe. The

attached foreline (roughing) pump weighs an additional 22.2 kg.

The basic components of the instrument are: the frame/cover assemblies, the

vacuum system, the GC/MS interface, the removable ion source, the flight tube

electronics, the collision cell, the detector, and the analyzer.

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