64
2
Operating the MSD
To vent the MSD without the ChemStation
To vent the MSD without the ChemStation
If the MSD ChemStation is functioning, use the procedure on page 52. This proce-
dure should
only
be used if it is absolutely necessary.
1
If your system is equipped with a gauge controller, switch off the triode
gauge tube and gauge controller.
2
From the GC keypad, turn off the GC zone controlling the GC/MSD
interface heater and set the GC oven to 30°C (see page 49).
3
Disconnect the
HIVAC POWER
cable from the back panel.
This turns off the MS heaters and the diffusion pump heater or turbo pump, but
the cooling fans and foreline pump stay on.
4
After 45 minutes, turn off the MSD power switch.
5
Unplug the MSD power cord.
6
Reconnect the
HIVAC POWER
cable.
7
Remove the upper MSD cover (page 50).
8
Turn the vent valve knob counterclockwise to admit air into the vacuum
manifold.
Do not remove the knob. Be sure to retighten the knob before pumping down.
See Also
To open the vacuum manifold
, page 54
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Be sure the GC oven and the GC/MSD interface are cool before turning off carrier gas flow.
Summary of Contents for 5973
Page 1: ...H Hardware Manual HP 5973 Mass Selective Detector ...
Page 3: ...HP 5973 Mass Selective Detector Hardware Manual ...
Page 25: ...1 Installing GC Columns To condition a capillary column 25 ...
Page 30: ...30 ...
Page 37: ...2 Operating the MSD To view MSD analyzer temperature and vacuum status 37 ...
Page 39: ...2 Operating the MSD To set monitors for MSD temperature and vacuum status 39 ...
Page 41: ...2 Operating the MSD To set the MSD analyzer temperatures 41 ...
Page 43: ...2 Operating the MSD To set the interface temperature from the ChemStation 43 ...
Page 51: ...2 Operating the MSD To remove the MSD covers 51 Upper cover Lower cover ...
Page 92: ...92 ...
Page 105: ...4 Maintaining the MSD To drain the foreline pump 105 Fill cap Drain plug Pump motor ...
Page 113: ...4 Maintaining the MSD To separate the MSD from the GC 113 ...
Page 121: ...4 Maintaining the MSD To reconnect the MSD to the GC 121 ...
Page 141: ...4 Maintaining the MSD To lubricate the side plate O ring 141 Side plate O ring ...
Page 159: ...4 Maintaining the MSD To remove a filament 159 Filament 2 Filament 1 ...
Page 161: ...4 Maintaining the MSD To reinstall a filament 161 Filament 2 Filament 1 ...
Page 210: ...210 ...
Page 214: ...214 ...
Page 232: ...232 7 Analyzer Analyzer heaters and radiators ...
Page 280: ...280 ...
Page 294: ...294 Index ...
Page 296: ...294 Chapter ...
Page 297: ...H Manual Part Number G1099 90027 Copyright 1998 Hewlett Packard Printed in USA 11 98 ...