Ametek Dycor Dymaxion Mass Spectrometer, User Manual

Page: 64 / 128

6-2 | Dycor Dymaxion Mass Spectrometer
Quadrupole Head Maintenance

The quadrupole head requires periodic maintenance. This
maintenance can be performed by anyone familiar with vacuum
system standard practices.

The entire head can be disassembled with the exception of the
mass filter subassembly. Most parts can be replaced if necessary.

As the analyzer head is used, deposits will form on the source
parts and on the mass filter. The lifetime of the source parts var-
ies with application, exposure time, and vacuum pressure.
Do not place the mass filter in an ultrasonic cleaner. The filter parts can
become loose during ultrasonic cleaning. This will significantly degrade
analyzer performance. A loosened mass filter must be replaced.
Filament Replacement
Open Source
The Dycor open source contains a dual-wire filament so the analyzer can con-
tinue to function if one side of the filament burns out. The replacement filament
comes in a protective container and can easily be replaced in the field.
Equipment required to replace a filament
• needle nose pliers,
• 1/16” hex wrench (supplied by AMETEK/Dycor),
• filament assembly kit (supplied by AMETEK/Dycor),
• latex gloves - powder-free (optional).
Handling the filament by the shorting tabs on the filament plate will
ensure against contamination through handling since these tabs will
eventually be discarded.
NOTE

Figure 6-1.
Quadrupole head
pinout, view of flange
(atmosphere side).