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7 Troubleshooting | 7.2 Column
ZEISS
NOTICE
Contamination by dust particles or fingerprints
Dust particles or skin grease can cause contaminations, which lead to flashovers or to bad vac-
uum.
4
Wear lint-free gloves throughout the whole procedure of replacing the filament.
Parts and Tools
EVO firing unit for tungsten filaments (350071-2832-000) including a Wehnelt assembly and a
box of ten standard tungsten filaments. Only used when replacing LaB₆ with tungsten fila-
ments.
Lint-free gloves
Can of compressed air
Adjust key (350061-1904-000)
Hex key, 1.5 mm
Procedure
1. If the filament is not pre-aligned, insert the tensator spring into the firing unit.
INFO:
The tensator spring washer is not designed to be used in combination with pre-
aligned filaments. If you install the tensator spring washer in combination with a pre-
aligned filament, then the filament height is incorrect. If you install a pre-aligned filament,
then do not install the tensator spring washer.
2. Align the slot at the side of the filament holder
with the pin inside the firing unit.
3. Insert the new filament holder into the firing
unit.
7.2.2.4.2 Installing the Brass Retaining Washer | Tungsten (Pre-Aligned)
NOTICE
Contamination by dust particles or fingerprints
Dust particles or skin grease can cause contaminations, which lead to flashovers or to bad vac-
uum.
4
Wear lint-free gloves throughout the whole procedure of replacing the filament.
138
Instruction Manual ZEISS EVO | en-US | Rev. 10 | 354706-0780-006
Содержание EVO
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