DoorBird D21 Series, Руководство по установке

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ENGLISH
13
MAINTENANCE FOR DOORBIRD PRODUCTS
Cleaning and maintenance instructions
All DoorBird door stations are made of high-quality
materials and are designed for a durable lifetime.
Since door stations are usually installed in unprotected
outdoor areas, they are exposed to adverse weather
conditions and aggressive substances, especially close
to frequently used roads, in coastal and industrial
areas. Therefore please consider the following care
instructions. Unfortunately, we cannot accept any
liability for damage if these instructions are not being
observed.
Aggressive dirt such as bird droppings should be
removed as quickly as possible.
NOTICE
Never use abrasive detergents such as steel
wool or scouring milk!
Warm water is usually sufficient, if necessary with
a little detergent, a soft cloth or brush. Plastic parts
(camera or name tags) must not be treated with
metal care products. Remove all residues of cleaning
agents or lubricants to avoid stains or discolouration
after the maintenance.
Stainless Steel
Only high-quality German stainless steel is used for all
available DoorBird door stations. However, high-quality
stainless steel can also rust, as approx. 70 % of stainless
steel is made of iron. Rust resistance is only achieved
by a protective layer (also called passive layer), which
covers the iron like a skin. This protective layer consists
essentially of chromium and other precious metals.
Iron particles, grinding dust and chips deposited on
stainless steel can lead to corrosion (rust film). These
iron particles can be found everywhere, but especially
in coastal and industrial areas and close to frequently
used roads. Please remove ferrous deposits immediately,
as they will attack your door station and lead to real
rust if not removed. To remove rust, simply wipe off the
dust; in addition, a care product is recommended, e.g.
WD 40, available e.g. at Amazon for less than € 5.00.
Simply apply in a thin layer and rub in. The same applies
if rust appears on the engravings on the stainless steel
surface.
Cement or lime splashes should be carefully removed
as soon as possible with a wooden spatula before
hardening.
The following cleaning detergents are not to be used
as they reduce corrosion resistance:
• products containing chloride and hydrochloric
acid
• Bleach (in case of accidental use, rinse thoroughly
with water)
• Silver polish
After the cleaning with clear water wipe with damp
cloth and rub dry to avoid lime traces. Lime residues
can be avoided by using demineralised water.
Stainless steel PVD coated
PVD coated, chrome-plated or gold-plated surfaces
are recommended to be cleaned with a grease-
dissolving detergent and clear water or with a clean
and dust-free microfibre cloth. For high-gloss surfaces,
use a scratch-free cloth (e.g. cleaning cloth for glasses,
furniture polishing cloth, etc.).
Lacquered surfaces
Clean painted surfaces and lettering with a soft,
scratch-free cloth moistened with a mild soap solution
(e.g. cleaning cloth for glasses, furniture polishing cloth,
etc.). To prevent stains or discolouration, the detergents
should be wiped off without leaving any residue.
Be particularly careful with lettering in order not to
damage the film or the print.