Videotec NTM, Instruction Manual, Page: 10 / 64

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nstruc
tion manual
8 MNVCNTM_1702_EN
6.5 Replacement of the
germanium window
Germanium glass has two colours. Inside the housing
there is an anti-reflection coating that changes
colour (depending on the direction of vision). On the
outside, on the other hand, there is a scratchproof
coating to make the glass dark grey in colour. To
install the new glass refer to the next figure.
Fig. 9
The housing has a flange with a germanium window
with a diameter of 55mm and 2mm thick.
The graph shows the transmittance spectrum for the
window.
7.5 8.5 9.5 10.5 11.5 12.5 13.5
8
0
20
40
60
80
9 10 11 12 13
Ge 2mm, AR/AR+DLC
Fig. 10
7 Cleaning
7.1 Cleaning the window and
plastic parts
Avoid ethyl alcohol, solvents, hydrogenated
hydrocarbide, strong acid and alkali. Such
products may irreparably damage the
surface.
We recommend using a soft cloth with neutral soap
diluted with water or specific products to clean the
glasses lenses.
8 Disposal of waste
materials
This symbol mark and recycle system
are applied only to EU countries and not
applied to other countries of the world.
Your product is designed and manufactured with
high quality materials and components which can be
recycled and reused.
This symbol means that electrical and electronic
equipment, at their end-of-life, should be disposed of
separately from your household waste.
Please dispose of this equipment at your local
Community waste collection or Recycling centre.
In the European Union there are separate collection
systems for used electrical and electronic products.