Safety; Foreword - comatec AQWL Installations- Und Wartungshandbuch

2.1 Foreword

These units must be installed in conformity with the
provisions of Machinery Directive 2006/42/EC, Low Voltage
Directive 2006/95/EC, Pressure Vessels Directive 97/23/
EC, Electromagnetic Interference Directive 2004/108/EC,
as well as with other regulations applicable in the country
of installation. If these provisions are not complied with, the
unit must not be operated.
The unit must be grounded, and no
installation and/or maintenance operations
may be carried out before deenergising the
electrical panel of the unit.
DANGER
Failure to respect the safety measures mentioned above may result
in electrocution hazard and fire in the presence of any short-circuits.
Inside the heat exchangers, the compressors
and the refrigeration lines, this unit contains
liquid and gaseous refrigerant under
pressure. The release of this refrigerant may
DANGER
be dangerous and cause injuries.
The units are not designed to be operated with
natural refrigerants, such as hydrocarbons.
Manufacturer may not be held liable for any
problems deriving from the replacement
of original refrigerant or the introduction of
DANGER
hydrocarbons.
Units are designed and manufactured according to the requirements
of European Standard PED 97/23/EC (pressure vessels).
The used refrigerants are included in group II (non-hazardous
n
fluids).
The maximum working pressure values are mentioned on the
n
unit's data plate.
Suitable safety devices (pressure switches and safety valves)
n
have been provided, to prevent any anomalous overpressure
inside the plant.
The vents of the safety valves are positioned and oriented in such
n
a way as to reduce the risk of contact with the operator, in the
event that the valve is operated. Anyway, the installer will convey
the discharge of the valves far from the unit.
Dedicated guards (removable panels with tools) and danger signs
n
indicate the presence of hot pipes or components (high surface
temperature).

2 - Safety

The guards of the fans (only for units provided
with air heat exchangers) must be always
mounted and must never be removed before
de-energising the appliance.
DANGER
It is the User's responsibility to ensure that
the unit is fit for the conditions of intended use
and that both installation and maintenance are
carried out by experienced personnel, capable
of respecting all the recommendations
provided by this manual.
DANGER
It is important that the unit is adequately
supported, as detailed in this manual. Non-
compliance with these recommendations may
create hazardous situations for the personnel.
The unit must rest on a base which meets the
characteristics specified in this manual; a
base with inadequate characteristics is likely
to become a source of serious injury to the
DANGER
personnel.
The unit has not been design to withstand
loads and/or stress that may be transmitted by
adjacent units, piping and/or structures.
Each external load or stress transmitted to the
unit may break or cause breakdowns in the
WARNING
unit's structure, as well as serious dangers to
people. In these cases, any form of warranty will
automatically become null and void.
The packaging material must not be disposed of
in the surrounding environment or burnt.
WARNING
3