7 Troubleshooting | 7.2 Column ZEISS
5. Polish the top of the anode.
6. Clean the top and bottom side of the anode
aperture with a toothpick and polishing paste.
7. Remove all traces of polish visible to the eye.
Either rinse the firing unit with warm water containing a few drops of mild (non-abrasive)
detergent OR wipe off all polish with cotton. Do not forget to clean the inside of the aper-
ture. Use a toothpick and cotton to remove as much polishing paste as possible.
Clean until metal parts look shiny and polished. No trace of polish paste should be visible to
the eye.
INFO: If a light microscope is available, check around the aperture to ensure the aperture is
completely free from any polishing paste.
8. Completely remove any remaining traces of polish and surface contamination in an ultra-
sonic bath.
Completely immerse the firing unit in Isopropanol or Ethanol. Do not use Acetone.
Clean for 3-5 minutes.
INFO: If an ultrasonic bath is not available, clean the firing unit with plenty of solvent and a
clean piece of cotton. Repeat for at least 3 times.
7.2.2.2 Tungsten (Pre-Aligned)
7.2.2.2.1 Unpacking a New Filament Holder | Tungsten Filament (Pre-Aligned)
When you unpack a new filament holder, you need to use compressed air to clean it from any
dust particles.
Parts and Tools
Lint-free gloves
Tungsten filament cartridge (stainless steel): Pack of 10 pre-centered filaments cartridges
(354720-9919-000)
Can of compressed air
132 Instruction Manual ZEISS EVO | en-US | Rev. 10 | 354706-0780-006
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