Inficon HAPSITE Smart, Operating Manual

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HAPSITE Smart Operating Manual
15.8 Replacing the Ionizer of the Mass Spectrometer
The ionizer is located in the mass spectrometer vacuum manifold behind the NEG
Pump, or a blank off plate if a NEG Pump is not installed. The NEG pump must be
removed in this procedure. If a NEG Pump is installed, the NEG Pump can be
reinstalled and re-activated. Some lifetime of the NEG Pump will be lost during this
process. If a NEG has greater than 50 hours (approximately 1/2 the expected life)
the more economical choice may be to replace the pump, based on the reduced
lifetime after exposure to atmospheric pressure.
Tools/equipment required
 Flat head screw driver
 Ionizer removal tool
 13 mm open end wrench
 13 mm torque wrench.
 methanol

lint free cloth
 powder free gloves
 replacement aluminum seal ring (if NEG is to be installed)
CAUTION
If the NEG is to be reinstalled, the NEG Pump must be
removed when it is at room temperature. If the NEG Pump
has been used within 8 hours, let it cool overnight prior
to removal.
1
This procedure requires the use of a Service Module. The HAPSITE should be
physically on the Service Module and attached. Refer to
section 2.7, Service
Module, on page 2-18 and Chapter 14, Service Module for more information on
setting up and using the Service Module.
2
If the NEG Pump is hot from recent use, let the system cool overnight before
performing this procedure. Refer to
section 15.7.2, Part 1: NEG Pump
Removal, on page 15-17 .
WARNING
Do not bypass this cool down step!