Agilent Technologies InfinityLab LC Series User manual

1260 Infinity II Degasser
Agilent InfinityLab LC Series
User Manual
1260 Infinity II Degasser User Manual

1260 Infinity II Degasser User Manual
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Document No: SD-29000216
Part No: G7122-90000 Rev. C
EDITION 03/2020
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1260 Infinity II Degasser User Manual 3
In This Guide...
This manual covers the Agilent InfinityLab LC Series 1260 Infinity II Degasser (G7122A).
1Introduction
This chapter gives an introduction to the module, the operations modes and the
module control.
2 Site Requirements and Specifications
This chapter provides information on environmental requirements, physical and
performance specifications.
3 Using the Degasser
This chapter provides information for optimized usage of the module.
4Troubleshootingand Diagnostics
Overview about the troubleshooting and diagnostic features.
5 Maintenance
This chapter describes the maintenance of the module.
6 Parts for Maintenance and Repair
This chapter provides information on parts for maintenance.
7IdentifyingCables
This chapter provides information on cables used with the Agilent InfinityLab LC
Series modules.
8 Hardware Information
This chapter describes the detector in more detail on hardware and electronics.
9Appendix
This chapter provides additional information on safety, legal and web.

1260 Infinity II Degasser User Manual 4
Contents
1Introduction6
Introduction to the Degasser 7
Product Description 8
Features 9
Operating Principle 10
Leak and Waste Handling 11
2 Site Requirements and Specifications 15
Site Requirements 16
Physical Specifications 19
Performance Specifications 20
3 Using the Degasser 21
Magnets 22
Turn on/off 23
Status Indicators 25
When to Use a Degasser? 26
Solvent Information 28
Prevent Blocking of Solvent Filters 34
4 Troubleshooting and Diagnostics 35
Module Status Indicator 36
Hardware Symptoms 37

1260 Infinity II Degasser User Manual 5
5 Maintenance 40
Warnings and Cautions 41
Simple Repairs - Maintenance 43
Clean the Instrument 44
Assemble the Main Cover 45
Check and Change the Power Fuses 46
6 Parts for Maintenance and Repair 48
Cover Parts 49
Accessory Kit Contents 51
7IdentifyingCables52
Cable Overview 53
Analog Cables 55
Remote Cables 57
CAN/LAN Cables 61
RS-232 Cables 62
USB Cables 63
8 Hardware Information 64
Electrical Connections 65
Interfaces 67
Instrument Layout 69
9Appendix70
General Safety Information 71
Waste Electrical and Electronic Equipment (WEEE) Directive 77
Radio Interference 78
Sound Emission 79
Agilent Technologies on Internet 80

1260 Infinity II Degasser User Manual 6
1Introduction
Introduction to the Degasser 7
Product Description 8
Features 9
Operating Principle 10
Leak and Waste Handling 11
Waste Concept 14
This chapter gives an introduction to the module, the operations modes and the
module control.

1260 Infinity II Degasser User Manual 7
1Introduction
Introduction to the Degasser
Introduction to the Degasser
The Agilent 1260 Infinity II Degasser G7122A comprises a 4-channel vacuum
container, including 4 tubular plastic membranes, and a vacuum pump. When the
degasser is switched on, the control circuit turns on the vacuum pump which
generates a partial vacuum in the vacuum container. The pressure is meassured
by a pressure sensor. The vacuum degasser maintains the low pressure by a
controlled leak in the air inlet filter and a regulation of the vacuum pump using the
pressure sensor.
The LC pump draws the solvents from their bottles through the special tubular
plastic membranes of the vacuum container. As the solvents pass through the
vacuum tubes any dissolved gas in the solvents permeates through the
membranes into the vacuum container. The solvents will be almost completely
degassed when leaving the outlets of the degasser.
Figure 1 Overview (only one of the four solvent channels is shown)
Pump
Sensor Control
circuit
Vacuum
pump
4 Tubular
plastic
membranes
Vacuum container
Solvent

1260 Infinity II Degasser User Manual 8
1Introduction
Product Description
Product Description
The 1260 Infinity II Degasser is a standalone module for systems without internal
Degasser or for usage with special applications. It reduces baseline noise and
quenching effects. In fluorescence detection, lower detection limits and
long-term baseline stability are achieved with the degasser. Degassing is strongly
recommended for GPC/SEC applications using refractive index detection.
Figure 2OverviewoftheDegasser
Status indicator
Power switch
Leak drain

1260 Infinity II Degasser User Manual 9
1Introduction
Features
Features
•Robust design for high instrument uptime. The degassing principle is based
on passing solvents through a membrane tube that is permeable to gas but
not to liquid, and kept at a constant vacuum level.
•Reduced baseline noise and quenching effects through high degassing
capacity. In fluorescence detection, this results in lower detection limits and
long-term baseline stability.
•Strongly recommended for GPC/SEC applications using refractive index
detection.

1260 Infinity II Degasser User Manual 10
1Introduction
Operating Principle
Operating Principle
Once the degasser started, the status indicator is amber ("Not-ready") and the
degasser vacuum pump tries to reach a target pressure below 100 mbar/hPa. If
this limit cannot be reached within 16 minutes, an error is thrown and the status
indicator switches to red ("Error mode"). As soon as the limit has been reached,
which typically happens within about 8 minutes, the pump goes to a continuous
regulation mode, where the pump tries to regulate to 100 mbar/hPa target
pressure. If this pressure limit cannot be reached, it is increased stepwise to a
maximum of 160 mbar and the status indicator switches to amber. If a stable
pressure between 100 mbar and 160 mbar max. can be kept, the status indicator
switches off ("Idle"). If the maximum limit of 160 mbar is exceeded, the status
indicator switches to red and an error is thrown.