INFICON HAPSITE ER Chemical Identification System - Manual (Page 512)

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HAPSITE ER Operating Manual
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 2.6, Service
Module, on page 2-17 and Chapter 15, 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 16.7.2, Part 1: NEG Pump
Removal, on page 16-19 .
WARNING
Do not bypass this cool down step!
3 Vent the HAPSITE by choosing Vent HAPSITE on the Service window of the
Service Module tab in the Properties window. This starts a process which
includes monitoring the cooling of the NEG Pump. See
Figure 16-43 .