Steinberg Systems SBS-PF-150/5S Bedienungsanleitung Seite 21

f) Clean the ventilation openings with a brush and compressed air.
g) Perform regular inspections of the unit checking technical fitness and any
damages.
h) Do not leave the batteries in the unit when it will not be used for a long time.
i) Use a soft, damp cloth for cleaning.
j) Do not use sharp and/or metal objects (e.g. wire brush or metal spatula) as
they may damage the surface of the material from which the device is made.
k) Do not clean the product with acidic substances, medical agents, thinners, fuel,
oils or other chemicals. It may cause damage to the device.
INSTRUCTIONS FOR THE SAFE DISPOSAL OF BATTERIES.
The devices are equipped with 4 V, 4000 mAh batteries.
Remove used batteries from the unit in the same way you put them in.
Return the batteries to a unit responsible for their disposal.
DISPOSAL OF USED UNITS.
At the end of its useful life, this product should not be disposed of with normal
household waste but should be taken to a collection point for the recycling of
electrical and electronic equipment. This is indicated by the symbol on the
product, operating instructions or packaging. The materials used in this appliance
are recyclable according to their marking. By reuse, recycling or applying other
forms of use of waste machines, you make a significant contribution to the
protection of our environment.
Your local administration will provide you with information about the appropriate
disposal point for used appliances.