MAINTENANCE AND SERVICE
Stemi DV4 / DR Maintenance / Consumables Carl Zeiss
B 40-003 e 08/00 4-1
4 MAINTENANCE AND SERVICE
4.1 Maintenance
Maintenance of the instruments is limited to the following operations:
• Disconnect the power unit of the Stemi DV4 / DR from the line after use. Use a suitable cover to
protect the instruments from dust and humidity.
• Never expose the instruments to inadmissible climatic conditions (high humidity and temperature).
The best way to remove stubborn dirt on glass surfaces, e.g. finger prints or traces of grease, is the use
of a piece of cotton wrapped around a wooden stick and a small amount of distilled water or a non-
aggressive solution:
• distilled water: clean glass surface using a slightly moistened wad of cotton by moving in circles
starting in the middle.
• optics cleaning solution, consisting of 15% isopropanol and 85 % medical alcohol (benzoline): clean
glass surface using a slightly moistened wad of cotton by moving in circles starting in the middle.
• remove dust from optical surfaces using a natural hair brush or an air blower.
• plastic components must be cleaned with commercially available cleaning agents (no solutions!).
Stubborn dirt can be carefully treated with pure benzene or petroleum ether.
4.2 Consumables
The following consumables can be ordered directly from Carl Zeiss:
Description Cat. No. Comments
Halostar frosted halogen lamp, 12 V, 10 W G4 000000-0407-307 For stand C
Decostar halogen reflector lamp
12 V, 20 W GU 4
000000-0407-308 For stand C
Opal glass plate d = 84 mm with stop 40 mm 000000-1055-602 For stand C
Ball-headed screwdriver 3 mm 000000-0069-551 For stand C
Clear glass plate 475265-0001-000 For the attachment for
transmitted-light darkfield
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