2N Door intercom 2N Helios - Manual, 1322 v3.0 - Manual (Page 65)

Maintenance 4.3
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4.3 Maintenance
Cleaning
If used frequently, 2N® Helios, especially the keypad, gets dirty. To clean it, use a
piece of soft cloth moistened with clean water. We recommend you to obey the
following principles while cleaning:
 Never use aggressive detergents (such as abrasives or strong
disinfectants);
 Clean the device in dry weather in order to make waste water evaporate
quickly.
Label Replacement, Programming Status Changes
For necessary steps refer to the preceding subsections. Keep the following for later
changes:
 this manual;
 the completed programming form (including a copy);
 unused transparent foil strips for button labels.
Always use the product for the purpose it was designed and manufactured for, in
compliance herewith.
The manufacturer reserves the right to modify the product in order to improve its
qualities.
2N Helios contains no environmentally harmful components. When the product„s
service life is exhausted and you would like to dispose of it please do so in accordance
with applicable legal regulations.