Installation In Explosive Atmospheres, Installation Zones 1 And - GEA Grasso M-Series Operating Manual

Operating Manual | GEA Grasso M-Series
Screw Compressor Packages
Hint!
There are no radiation hazards
4.4 Installation in explosive atmos-
pheres, installation zones 1 and 2
Danger!
The additional instructions for using
screw compressor packages in explo-
sive atmospheres, installation zones 1
and 2, must be complied with!
Function and Design
The same functional and design characteristics apply
to the maintenance instructions for the use of screw
compressor packages in potentially explosive atmos-
pheres as described in the respective applicable
operating manual.
In addition to this, the following extensions
apply:
– All components relevant for the use of screw
compressor packages in relation to their use in
potentially explosive atmospheres (concerns
both electrical and non-electrical components)
are separately designed and documented! The
extended documentation scope (component
descriptions, certificates, calculations) is part of
the product documentation.
– Extension to the method of working
The use of screw compressor packages is exten-
ded to use in potentially explosive atmospheres,
including the compression of process gases
(only compression for the purposes of pressure
increase). The screw compressor packages are
not suitable for pumping potentially explosive
mixtures. This means that, when the compressor
is in intake condition, the pumped liquid must not
contain any oxygen. The intake condition always
refers to pressure layers in the overpressure
range.
The owner operator and the system builder must
use monitoring devices reflecting the respective
state of the art standards to positively monitor
and ensure this effect.
– Safety equipment extension
If oil heaters are used in potentially explosive
atmospheres (see component specification),
additional, separate oil level monitoring is abso-
GEA Refrigeration Germany GmbH | P_261511_1 | Generated 01.04.2015
lutely necessary to ensure a minimum oil level
above the heating elements. To this end, a sepa-
rate oil level switch is used in each use case
according to the necessary explosion protection
specification.
Operation
The same regulations apply in regard to the operat-
ing instructions for screw compressor packages in
potentially explosive atmospheres as described in
the applicable operating manual.
In addition to this, the following extensions
apply:
– In addition, the legal safety regulations apply to
the people responsible for operating the screw
compressor package, and must be complied with
respect to the transport, assembly, operation and
maintenance and if necessary the replacement
of subassemblies, etc. in potentially explosive
atmospheres.
The owner operators regulations must also
always be observed – see also section: Safety
information for compressor, Appendix E, and for
package, Appendix E.
–
The electrical engineering regulations for instal-
lations in potentially explosive atmospheres ,
especially EN 60079-10, apply to the installation
and connection of electrical components. The
relevant prescribed cabling material must be
used.
– The whole screw compressor package must be
earthed by the owner operator.
Maintenance
The same regulations apply to the maintenance of
screw compressor packages in potentially explosive
atmospheres as described in the respective applica-
ble operating manual.
In addition to this, the following extensions
apply:
–
In addition, the legal safety regulations for the
installation of the screw compressor packages
apply to the people responsible for the mainte-
nance of the screw compressor package with
respect to the maintenance of individual compo-
nents or assemblies or their complete replace-
ment in potentially explosive atmospheres.
– The maintenance may only be carried out in
agreement/with the knowledge and release of
the owner operator.
Safety
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