S&P CE ATEX, Quick Manual

Page: 18 / 32

SAFETY RISKS
In accordance with the EU Machine Directive, the fan has been subject to an exhustive risk analysis. The
following risks should be considered:
INSTALLATION
Incorrect installation or inappropriate functioning represents a risk to both people and objects. The fans
should be installed by qualified, trained personnel. Installation should be in compliance with all current laws
and safety norms.
ROTATION SPEED
The fan is designed to safely function at a maximum rotation speed, as specified in the annex of this manual
in the section on technical characteristics and problems due to noise levels. Never exceed the rotation speed
limit.
WORKING TEMPERATURE
Never exceed the maximum temperature limit of the machine.
Adequate protection should be made available to operators in the case of transport of fluids at high
temperatures.
PROTECTION DEVICES
It is absolutely prohibited to remove any of the protection devices installed in the machines - this would lead
to a serious safety risk.
ELECTRICAL RISKS
The maintenance of the electrical components should be carried out by qualified, trained personnel, after
consulting the electric motor service manual. The electrical earth connection for all metallic parts of the
machine should be checked every six months. Avoid temporary or improvised connections to the electrical
parts.
FOREIGN BODIES
If there is a risk of foreign bodies entering the machine, a protective grille should be fitted. Regular checks
should be made on the accumulation of foreign bodies in the grille, and if necessary they should be
removed, following the instructions in the section on SAFETY PRECAUTIONS.
DANGEROUS GASSES
In the case that the fluid produced represents a danger to people (toxic or noxious gasses), the fan must be
fitted with seals to avoid emissions. If this is not possible, suitable equipment must be supplied for the type of
fluid to be transported and for dealing with toxic or noxious gasses.
ATTENTION:
The operator must carefully check that the gasses or powder introduced into the fan are not made up of
mixtures that could provoke exothermic reactions and higher temperatures than those for which the machine
was designed.
INSPECTION REGISTERS
It is absolutely prohibited to open the register while the fan is moving When cleaning the machine, once the
fan is stopped, the power supply must be disconnected and it must be ensured that the machine cannot be
started accidentally. The inspection register may now be opened, by removing the screws and gaining
access to the interior of the machine.
TOOLS FOR USE IN EXPLOSIVE ATMOSPHERES
In conformance with norm EN1127-1 (Prevention and protection against explosion Part 1: basic concepts
and methodology) the different types of tools must be distinguished:
a) Tools that very rarely produce sparks (for example, screwdrivers, spanners, compressed air
wrenches).
b) Tools used for cutting or grinding that generate multiple sparks.
No tools that can produce sparks are allowed in areas 0 and 20.
LIGHTNING
If a lightning discharge into a potentially explosive atmosphere, the ignition will occur forever. There is also
the possibility of ignition due to high temperatures reaching the elements leading lightning, therefore facilities
must be protected against overvoltage protection systems at the proper locations.
ELECTROMAGNETIC WAVES AND RADIO FREQUENCY
All systems that produce electricity using high-frequency (RF systems) emit electromagnetic waves, as well
as radiation or lasers to solar radiation. As a measure to prevent ignition due to electromagnetic waves, it
must keep a safe distance in all directions, radiating between the parties closer.
IONIZING RADIATION
Ionizing radiation produced, for example, from X-ray tubes and radioactive substances, can ignite explosive
atmospheres. This is why installing a fan near a source of radiation in a potentially explosive atmosphere
must be conducted according to specific regulations in this regard.
ULTRASONIC
A large amount of energy emitted by an issuer electro-acoustical can be absorbed by solids or liquids, with
the result that the substance is hot so that it can ignite. It is recommended not to expose the fan to ultrasonic
waves above 10 MHz.
ADIABATIC COMPRESSION AND SHOCK WAVES
In the case of adiabatic compression or shock waves, can reach temperatures high enough so that it can
ignite explosive atmospheres, that’s why we must prevent it from occurring in normal operation.