Hitachi OE700 Series, Operating Manual

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5 Scope of delivery, transport, set-up and installation
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20 Hitachi High-Tech Analytical Science
5.5 Establishing optical transparency
The optical components of the instrument are located inside a vacuum chamber in which
a defined negative pressure must be maintained in order to render wavelengths smaller
than 200 nm detectable.
Upon initial installation of the instrument or after prolonged periods of non-use, it is
therefore absolutely necessary to restore this specific vacuum atmosphere to achieve
best measuring results.
Information
Please observe the following:
•
Disable automatic Windows ™ updates (chapter 5.5.1) before starting the pump
cycle to establish optical transparency.
• Carry out the pump cycle for establishing optical transparency as soon as the
instrument has been switched off or the argon supply has been interrupted.
• During the pump cycle do not close any of the displayed dialogs of the spectrometer
software and do not switch off the computer.
• Subsequently perform the UV transparency test (chapter 5.5.3).
5.5.1 Disabling Windows™ updates
In some cases the update function of Windows™ can interrupt the pump cycle. To
prevent this, disable automatic updates as follows:
1. Open the Windows™ Computer Management.
2. Select the menu item "Services" (1), then choose "Windows Update" (2) and right-
click your mouse to open the "Properties" (3).
Fig. 5-3 "Computer Management" window
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2
3