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Operation Manual D-480 ©BÜCH Labortechnik AG
8 - Maintaining the instrument 193
Replacing sealing elements
Target group
Personnel authorized by BÜCHI Labortechnik AG.
Purpose
Replacing sealing elements prevents leaks. As a result of chemical corrosion, mechanical and
thermal stress, sealing elements in various components of the instrument can become leaky over
time.
In this section
When to replace sealing elements...............................................................................................194
Removing sealing elements from grooves ...................................................................................195
- DuMaster D-480 1
- Operation Manual 1
- Copyright Note 3 3
- Contents 5
- Contents 6 6
- Contents 7 7
- Contents 8 8
- Contents 9 9
- Contents 10 10
- Contents 11 11
- General 13
- Revision history 14
- About this document 15
- Display conventions 16
- Basic security settings 17
- Warning: residual risks 19
- Gas supply 20
- Temperature monitoring 20
- Instrument casing 20
- Protective earth conductor 21
- Waste gas lines 21
- Warning sign furnace 22
- Warning sign electrical area 22
- Meaning of the warning signs 22
- Safe instrument 23
- Warning 23
- Knowledge and skills 23
- Protective glasses 24
- Protective gloves 24
- Laboratory clothing 24
- Damaged base panel 25
- Gas pressure 25
- Hot instrument parts 25
- Changing mode 25
- Removing reaction tubes 26
- Filling reaction tubes 26
- Filling the drying tube 27
- Product description 29
- 3 - Product description 30 30
- Analytical characteristics 31
- Technical specifications 31
- Dimensions and weights 32
- Electrical and gas supply 32
- Ambient conditions 32
- Instrument design 33
- Front view 34
- Furnace section 35
- Rear view 36
- Right side view 37
- Left side view 38
- Top view 39
- CHAPTER 4 41
- Functional units 43
- Symbols 44
- dosing system (I) 44
- Introduction 48
- Setting device parameters 50
- Instrument equipment 51
- Calibration formulae 55
- Routine measuring work 56
- Instrument blank values 57
- Conditioning samples 57
- Daily factor determinations 57
- Blank value determination 58
- Blank value compensation 58
- Daily factor 58
- Software user interface 61
- Sample view 62
- Sample view input functions 63
- Color coding 63
- Combi view 64
- Statistics view 66
- Calibration view 66
- Status view 67
- Right mouse button function 69
- In dialogs 70
- Further functions 70
- Copyright Note 71 71
- Copyright Note 72 72
- 21 CFR Part 11 functionality 73
- Versioning 74
- Work performed by the system 75
- Conditions for installation 76
- Requirements for operation 76
- Configure analyzer 77
- Defining logon timeout 78
- Creating new sections 79
- LIMS export settings 81
- User administration 83
- Granting authorizations 83
- Defining interfaces 85
- Dialog details 87
- Editing analysis data 88
- Performing checks 90
- Viewing the logbook 92
- Working with the database 93
- Database 94
- Database backup 95
- Starting the database backup 96
- Reorganize database 96
- Analyzer configuration 99
- Reacting to irregularities 99
- Sleep/wake-up behavior 99
- Optimizing data evaluation 101
- Modifying the registration 103
- Printer setup 103
- CHAPTER 6 105
- First-time start-up 107
- General requirements 107
- Specific requirements 108
- Start-up 109
- Connecting peripherals 110
- Peripherals 111
- Configuring the balance 111
- Switching on 114
- Default instrument settings 114
- intake pressure 115
- Flow rate 115
- Shutting down the instrument 116
- Procedure 117
- Safety instruction 118
- Using the instrument 119
- Measurement settings 120
- Keywords 121
- Factory-set key words 121
- Defining custom keywords 121
- Viewing the list 121
- Configuring error handling 124
- Preparing samples 125
- Determining sample weight 126
- Packing samples 127
- Preparing measurement work 129
- Software usage rules 130
- Waking up the instrument 130
- Selecting the operating mode 131
- Viewing method settings 131
- Defining custom methods 131
- Defining the Kjeldahl factor 132
- Copy methods 133
- Settings for sample input 133
- Importing weighing data 134
- Prioritizing urgent samples 134
- What can you optimize? 135
- Performing measurement work 136
- Values for oxygen dosing 137
- Performing measurements 138
- Overview 140
- Purpose 142
- Checklist 142
- Background 143
- Determining blank values 144
- Determining the daily factor 145
- Stopping continuous analysis 147
- Configuring the sample view 149
- Saving the sample view 150
- Loading a sample view 150
- Configure statistics view 150
- Generating statistical data 150
- Statistical data 151
- Manual peak integration 152
- Single peaks 153
- Superimposed peaks 153
- Melted peaks 153
- Manual integratability 154
- Baseline 154
- Integration of single peaks 154
- Configuring the graph view 156
- Configure report 157
- Display print preview 157
- Data backup and printing 158
- Export and import 159
- Exporting LIMS data 160
- Working with documents 161
- Creating new documents 162
- Editing documents 162
- Deleting documents 163
- Finding documents 163
- Finding previous versions 164
- What can you copy? 164
- Selecting cells 164
- Inserting data 164
- Importing documents 165
- Signing documents 165
- What signature is checked? 166
- Checking a signature 166
- Maintaining the instrument 167
- Recommendation 169
- Installing used tubes 171
- Safety instruction 172
- Purpose of conditioning 172
- Types of conditioning 172
- Flushing tubes 173
- Performing the calibration 175
- Defining standard substances 176
- Process 178
- Requirements: 178
- Displayed characteristics 182
- Quality factor "r" 183
- Coefficient "a" 183
- Calibration tables 185
- Suggestion 186
- Replacing the ash crucible 187
- Removing the ash crucible 188
- Furnace area 189
- Top view furnace 189
- Installing the ash crucible 191
- Replacing sealing elements 193
- Removing sealing elements 195
- Ball valve maintenance 196
- Dismantled ball valve 199
- Requirements 202
- Installing the Ni flap 209
- Installing the O 212
- Purpose of cleaning 218
- Cleaning the carousel 218
- Emptying reaction tubes 221
- Filling the combustion tube 222
- Filling the reduction tube 224
- In this section 226
- Filling the drying tubes 234
- Drying tube filling (large) 235
- Repairing the instrument 239
- Software reaction to errors 240
- On-screen error message 240
- Interpreting error code 240
- Performing a system test 241
- Performing a leak test 242
- Leak test procedure 243
- Replacing fuses 243
- Fuse holder 244
- Phase 3: Insert fuses 246
- After a computer crash 247
- Reacting to a power failure 248
- When is this necessary? 251
- Changing the position 251
- Export for support 251
- Exporting analysis data 252
- Menu and dialog descriptions 253
- Dialog descriptions key 254
- File menu 255
- File > New (Command) 256
- Listbox columns 257
- Select version (Dialog) 258
- Save file as (Dialog) 259
- File > Delete (Command) 260
- Sign (Dialog) 261
- Export to LIMS (Dialog) 262
- Configure report (Dialog) 263
- Elements 264
- Further information 264
- Print (Dialog) 265
- Print preview (Dialog) 266
- Printer setup (Dialog) 267
- Open (Dialog) 268
- Load balance file (Dialog) 269
- Configure backup (Dialog) 269
- Clean database (Dialog) 271
- Restore database (Dialog) 271
- Log in as (Dialog) 272
- File > Logoff (Command) 273
- File > Exit (Command) 273
- Edit menu 274
- Edit > Redo (Command) 275
- Edit > Undo (Command) 275
- Edit > Cut (Command) 275
- Edit > Copy (Command) 275
- Edit > Paste (Command) 276
- Swap samples (Dialog) 277
- Edit > Modify (Command) 277
- Set stop tag (Dialog) 278
- View menu 281
- View > Toggle (Command) 282
- Zoom in/out (Dialog) 282
- Configure view (Dialog) 282
- Column properties (Dialog) 283
- Save views (Dialog) 284
- Load views (Dialog) 285
- Delete views (Dialog) 285
- Function 286
- Select columns (Dialog) 288
- System menu 289
- System > Stop (Command) 290
- Feeding (Dialog) 291
- Analysis mode (Dialog) 293
- Windows menu 295
- Toolbar 296
- Weighing window (Dialog) 297
- Options menu 299
- Replace part (Dialog) 301
- Leak test (Dialog) 302
- System test (Dialog) 304
- Error buffer (Dialog) 306
- Error display (Dialog) 306
- Input options (Dialog) 307
- Standard samples (Dialog) 308
- Keywords (Dialog) 309
- Acoustic signals (Dialog) 310
- LIMS settings (Dialog) 311
- "LIMS data" tab 312
- "Identifier" tab: 313
- Device parameters (Dialog) 314
- Method (Dialog) 315
- Error handling (Dialog) 316
- Monthly logbook (Dialog) 319
- Select period (Dialog) 320
- "DEVICE.INI" tab 321
- Configure key value (Dialog) 323
- Math menu 325
- Blank values (Dialog) 326
- Math. > Factor (Command) 327
- Define type of peak (Dialog) 327
- Area assignment (Dialog) 328
- Statistics menu 331
- Calibration menu 334
- Help menu 339
- Help > Content (Command) 340
- Help > Find (Command) 340
- Short cuts 341
- Appendix 343
- Warranty 344
- Warranty on the furnace 345
- 11 - Appendix 346 346
- Smallest workable unit 347
- Required accessories 347
- Optional accessories 348
- 11 - Appendix 349 349
- Index 351 351
- Index 352 352
- Index 353 353
- Index 354 354
- Quality in your hands 356
- Find your BUCHI Contacts: 356
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