Zeiss EVO, Инструкция по эксплуатации, Страница: 139 / 180

ZEISS 7 Troubleshooting | 7.2 Column
Parts and Tools
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Lint-free gloves
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Adjust key (350061-1904-000)
Prerequisite
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The filament holder is inserted into the firing unit.
Procedure 1. Insert the brass retaining washer.
2. Use the adjust key to tighten the brass retain-
ing washer.
3. Slightly shake the firing unit to check that the brass retaining washer is mounted correctly.
4. If the brass retaining washer makes any sound when shaking, then tighten the brass retain-
ing washer a bit more.
7.2.2.4.3 Installing the Brass Retaining Washer | Tungsten (Not Pre-Aligned)
When you install the brass retaining washer, you need to screw it in with the correct number of
turns. The number of turns affects the filament distance and the possible applications according
to the following table:
Number of turns Filament distance
(mm) Application
¾ 0.4 High resolution
Short filament lifetime
1 ¼ 0.6 General use
Extended filament lifetime
1 ¾ 0.9 X-ray analysis
Tab. 7: Tightening the brass retaining washer with the correct number of turns.
You need to check the correct filament distance and the centering of the filament with a stereo
microscope or with a hand lens.
Info
If the filament is not accurately centered or if the filament distance is not correctly adjusted,
then this may negatively affect the filament lifetime and the performance.
Instruction Manual ZEISS EVO | en-US | Rev. 10 | 354706-0780-006 139