Maintenance And Cleaning; General Information; Battery Change; A) General - Renkforce Smart USB Bedienungsanleitung

11. Maintenance and Cleaning

a) General Information
The product requires no servicing apart from replacing the rechargeable
battery. Servicing or repair must only be carried out by a specialist or
specialist workshop. There are no parts that require maintenance by you
inside the product. Therefore, never open it (except for the procedure
described in these operating instructions for inserting or replacing the
batteries).
A dry, soft and clean cloth is sufficient for cleaning.
Do not put too much pressure on the display; this can cause scratch
marks, failures of the display or even destroy the display.
The same applies when cleaning the projector lens. Scratches may cause
projection to become blurry.
Dust can easily be removed with a long-hair, soft and clean brush and
a vacuum cleaner.
Never use any aggressive cleaning agents, cleaning alcohol or other
chemical solutions, since these may damage the casing (discolouration)
or even impair function.
b) Battery Change
If the projection clock is operated with batteries (instead of the
enclosed mains adapter), the batteries must be replaced when
the display contrast reduces.
When the projection clock is operated with the enclosed mains
adapter, the batteries are only supporting batteries in case of
power outage. In this case, we recommend regularly replacing
the batteries about every 2 years to avoid leaking of the batteries
due to overaging.
A battery change will cause all data of the projection clock to be lost when
it is not supplied with power through the mains adapter.
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