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G1888
Agilent Technologies G1888 User Manual
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Maintai
ning the Ins
trumen
t
User Information
14
1
1
Visual
ly check
t
hat the sh
utter is not touch
ing the e
dge of the
tray base. See
Fig
ure
22
.
Figu
re 2
1
Motor gr
oup align
ment
Lifter
Shutter
Figu
re 2
2
Shutter alig
nment
Shutte
r
Tray base
No rub
bing
medium
_s
t
a
n
d
ar
d.
book
P
a
ge
141 T
u
es
day,
Febr
uar
y
17,
2004
10:14 AM
140
142
Table of Contents
Default Chapter
5
Table of Contents
5
Introduction
13
About this Manual
14
Video Supplements
14
Intended User
15
Conventions
16
Important Safety Warnings
17
Many Internal Parts of the Instrument Carry Dangerous Voltages
17
Electrostatic Discharge Is a Threat to Instrument Electronics
17
Many Parts Are Dangerously Hot
18
Gases
18
General Warnings
19
Safety and Regulatory Certifications
20
Information
20
Symbols
21
Electromagnetic Compatibility
21
Sound Emission Certification for Federal Republic of Germany
22
Fuses
23
Cleaning
23
Recycling the Product
23
Introduction to Headspace and to the G1888 Network Headspace Sampler
25
Overview of Headspace Analysis
26
The G1888 Network Headspace Sampler
28
Oven
30
Heated Zones
31
Vial Tray
31
Sampling System
31
Transfer Line
31
Keypad and Display
32
Pneumatics
32
Principles of Operation
34
General Operation
34
Power on Diagnostics
35
Standby Condition
36
Vial Pressurization
37
Filling the Sample Loop
38
Loop Equilibration
39
Injecting the Sample
39
End of Cycle and Vial Recovery
40
Modes of Operation
41
Standard Headspace Extraction
41
Multiple Headspace Extraction with Multiple Vial Puncture
43
The Keypad
48
Accessing Functions
48
Editing Setpoints
48
The Keypad
49
Keys and Their Functions
50
Enter
50
Clear
50
Numeric Keypad
50
Tray Advance
50
Start/Stop Key
51
The Active Method Key
52
Zone Temps
52
Event Times
54
Vial Parameters
57
Menu Key
58
Load Method
59
Store Method
60
Chain Methods
61
Pressures
62
Advanced Functions
63
Using an Advanced Function
64
List of Advanced Functions
65
Advanced Function Descriptions
67
Stabilize Time
67
Parameter Increment
68
Vial Number and Location
70
Keyboard Lock
71
Manual Operation
72
Pressure Units
73
Stored Method
74
Multiple Headspace Extraction
75
Check for Ready
76
Reset
78
Valve Count
79
Vial Size
80
Zone Calibration
81
LAN Configuration
82
MAC Address
83
16. Enable RS232
83
Vent Valve Purging
84
Leak Test
86
Diagnostic
87
Preparing a Sample
89
Sample Preparation
90
Loading the Sample Tray
92
Entering a Method
94
How to Create a Method
94
Entering Zone Temperatures
95
Setting Event Times
97
Setting Vial Parameters
100
Storing and Loading Methods
102
Storing a Method
102
Loading a Method
103
Chaining Methods
104
Activate a Method Chain
104
Deactivate a Method Chain
105
Using a Method Chain for MHE
106
Developing Methods
108
Varying Oven Temperature
110
Varying Event Times
111
Vial Equilibration Time
111
Loop Fill Time
111
Matrix Effects
113
Changing the Sample Loop
114
Sample Size
115
Vial Pressurization and Time
116
Vial Pressurization
116
Vial Pressurization Time
116
Optimizing Carrier Gas Flow
117
Running a Sample
120
Setting Conditions
121
Flow Rates
121
Setting the Carrier Gas Flow Rate Using MPC
122
Setting the Vial Pressurization Gas Pressure Using MPC
123
Setting Carrier Flow Using EPC
123
Setting Vial Pressurization Flow Using EPC
124
Maintaining the Instrument
125
Maintenance Schedule
126
Common Replacement Parts and Consumables
127
Removing the Loop Cover
130
Changing the Sampling Probe
132
Changing the Sample Loop
134
Replacing the Tubing Assembly
136
Checking Alignments
139
Checking the Tray Chain Tension
139
Checking the Position 1 Sensor Alignment
140
Checking the Tray/Shutter Motor Group Alignment
140
Aligning the Carousel
142
Leak Testing: General Information
144
Leak Test
148
Required Tools
148
Setup
148
Running the Restriction Test
149
Pressure Decay Test
150
Zone Calibration
156
Recommended Tools
157
Procedure
157
Fuse Locations
160
Troubleshooting and Error Messages
163
Table of Errors
165
Chromatographic Results
168
No Peaks or Reduced Sensitivity
168
Poor Retention Time Reproducibility
169
Poor Area Count Reproducibility
170
Carryover in Air or Solvent Blanks
171
Unwanted Background Noise or Peaks
172
Vial Handling
173
Vial Not Dropped
173
Remove All Vials
173
210 Tray too Slow Error
173
211 Tray Motor Encoder Error
173
212 Tray Position 1 Error
174
220 Shutter Error
174
230 Tray Lifter Error
174
240 Sample Probe Lifter Error
175
250 Carousel Error
175
260 6-Port Valve Error
175
Vial Not Found in Oven
176
Tray Full
176
Recovering from a Vial Delivery Error
177
Heated Zone Temperatures
178
Open or Short
178
Zone at or Near Ambient
178
Zone Does Not Stabilize
178
Analysis Aborted Due to Temperature Error
178
Pressure Readings
179
GC Goes Not Ready During a Run
179
GC Pressure Reading Does Not Match Headspace Sampler Pressure Reading
179
Pressures Are below Normal Operating Pressures
179
Synchronization with GC Start or GC Ready: GC Does Not Start
180
Communication between the PC and Headspace Sampler
181
Internal Communication Serial I/O Errors
182
Memory and Processor Errors
183
Blank Display
184
Power ON, no Response
185
Lost Method in Active Memory
186
4
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Agilent Technologies G1888 Specifications
General
Brand
Agilent Technologies
Model
G1888
Category
Laboratory Equipment
Language
English
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