Introduction; Signals - Cattani Turbo-jet 1 Manual De Instrucciones

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Introduction

This is meant to illustrate the appliances, the systems, to explain their functioning
and maintenance, and to inform users about hazards and necessary precautions
for preventing accidents.
In order to avoid any misunderstanding it is useful to clarify the difference between
air, wet and semi-wet systems.
• With an air system, only air runs through the aspiration piping and the aspiration unit
creates a vacuum by means of an air-ring vacuum pump.
• With a wet ring system, the fl uid running through the aspiration piping is mixture of
aspirated liquids and air, while the ring inside the pump is created almost totally
by liquid.
• A semi-wet system is a combination of the above systems: aspirated liquid together
with air fl ows inside the piping (as in wet-ring systems) but the aspiration unit is
an air-ring one.
In short:
• in the dry version, only air fl ows in the piping and in the pump;
• in the wet version, liquids fl ow in the piping and in the pump;
• in the semi-wet version, liquids fl ow in the piping and air through the pump.

Signals

Electrical shock risk: also 230 V can lead to death
Biological danger, risk of infections from epidemic diseases
High temperature
General danger sign
Compulsory direction of fl ow or of 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.
Despite all our efforts, it is still possible that danger warnings are not exhaustive: we
apologise with the users and kindly request them to care for all danger sources that
might have pass unnoticed and to inform us accordingly.
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