Agilent Technologies 5975C TAD VL MSD, Troubleshooting And Maintenance Manual

Page: 271 / 276

5975 Series MSD Troubleshooting and Maintenance Manual 271
Index
Numerics
19, large peak at m/z, in CI MSD , 75
219 width , 209
32, visible peak at, in CI MSD , 76
A
Abrasively cleaning ion source parts , 138
parts to be cleaned , 135
Abundance
absolute , 40
low for
m/z
502 , 40
relative , 40
AC board , 220
Adjusting the RF coils , 159
Air leaks
as a source of contamination , 54
finding in CI , 61
small enough to cause no problems in
PCI can destroy NCI sensitivity , 58
visible peak at m/z 32 in CI MSD , 76
Ammonia
ballasting of the foreline pump required
due to , 166
AMU gain , 209
AMU offset , 209
Analyzer , 197 to 214
basic components of , 198
heaters , 213
ion source , 200
maintaining , 131
mass filter , 208
part numbers , 250
parts that should not be disturbed , 132
radiators , 213
Analyzer chamber pressure
too high , 42
too low , 43
Analyzer chamber, turbo pump , 179
Analyzer temperatures
recommended , 213
Autotune
relative abundances of
m/z
502
produced by different autotunes , 40
B
Back panel and connectors , 225
Background, high , 38 , 54
Baseline, chromatographic
falling , 35
high , 35
rising , 35
wandering , 36
Bleed.
See
Column bleed
or
Septum bleed
C
Calibrant
CI calibrant ions not visible , 73
Calibrant vial, CI
refilling , 169
Calibrant vial, CI, refilling
Calibration valve
O-ring , 182
Calibration valve, CI , 192
Calibration valve, EI
reinstalling , 113
Calibration vial, EI
refilling and reinstalling , 112
removing , 109
Carrier gas
contaminated , 54
Chemical ionization
hardware overview , 16
Chemical residue, hazardous , 86
Chromatography, abnormal results , 33
CI calibrant vial
refilling , 169
CI calibration valve , 192
CI filament , 202
CI interface tip seal , 202
installing , 164 , 166 , 167 , 169
CI ion source
repeller , 202
CI maintenance , 163 to 170
CI MSD maintenance , 163
installing the CI interface tip seal , 164 ,
166 , 167 , 169
CI spectra
classical , 16
Cleanliness, importance during
maintenance , 131
Column bleed
as a source of contamination , 54
Column nut
leaking , 53
Columns
installing in the GC/MSD
interface , 105 , 109 , 112 , 113 , 118 ,
133 , 135 , 138 , 140 , 142 , 144 , 151 ,
164 , 166 , 167 , 169 , 219
Compression seals , 183
Connectors , 225
foreline pump cord receptacle , 225
high vacuum power (HIVAC
POWER) , 225
high vacuum signal (HIVAC
SIGNAL) , 225
power cord receptacle , 225
remote start , 225 , 228
Consumables, part numbers of , 260
Contamination , 54
avoiding after cleaning the ion
source , 131
D
DC polarity , 210
Detector , 211
difficulty with the EM supply , 47
electron multiplier horn , 211
electron multiplier voltage , 211
replacing the horn , 151
steadily increasing EM voltage , 212