cattani AC 300 Gebrauchsanweisung Seite 20

Introduction
The following presentation aims at illustrating the equipment and systems dealt with herein
to users and engineers; it also aims at explaining operation and maintenance, as well
as the dangers with the precautions required for accident prevention to users.
Signs and warnings
• Danger of electric shocks: also 230 V can be lethal.
• High temperature.
• General danger sign.
• Compulsory direction of fl ow or rotation.
Signs cannot always fully express danger warnings, therefore it is necessary that the user
reads the warnings and keeps them in due consideration. Failure to respect a danger sign
or warning may harm operator or damage the equipment.
Do not remove protections, do not tamper with machines or their operation.
In particular do not carry out any welding or operations of any kind on the tank.
In spite of our best efforts, it is possible that the hazard warnings are not exhaustive; we
apologise in advance to the user for this, and ask in the meantime that users anticipate any
possible sources of danger that we might not have noticed, and to advise us of these.
Oil-free compressor and compressed air drying systems
When compressed air must be clean, hygienic, sterile or medical, the compressor
must be a dry (oil-free) appliance and compressed air must be dried.
Water-oil emulsion, produced by a standard lubricated compressor, is known to be detri-
mental to the dentist's rotating instruments; moreover, since compressed air is used also to
dry preparation before fi lling, even small traces of this emulsion can affect cementation.
The matter is even more serious if compressed air is used in a sterile fi eld: a sterilizing fi lter
can effectively treat only dry air. Oil -lubricated compressors, fi tted with fi ltering systems
to retain humidity and emulsifi ed oil, are more diffi cult to use, less safe and eventually
more expensive than oil-free compressors.
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