Leroy Somer FLSE Serie Notice D'utilisation page 8

3-phase induction motors for
en
ATMOSPHERES containing EXPLOSIVE
GASES or GAS and DUST
This document is an addition to the simplified manual: Installation and Maintenance ref: 1889
and the general manual: Installation and Maintenance ref: 3614
COMPLIANCE
• See EC declaration of conformity appended.
IMPORTANT
• The following instructions must be read and respected together with the standards relating to the rules for installing
electrical equipment and for explosive atmospheres, as well as all the documents which concerns the area where
equipment will be installed in explosive atmospheres, such as directives, laws, regulations, decrees, orders, circulars
and rules of the art. MOTEURS LEROY-SOMER cannot be held responsible if any of these documents are not
respected.
• When the motors are supplied by electronic converters which are adapted and/or slaved to electronic command
or control devices, they must be installed by a professional who will be responsible for ensuring that the
electromagnetic compatibility rules of the country where the product is installed are respected.
• The equipment concerned by this manual cannot be commissioned before the machine into which they are
incorporated has been declared to conform to the Directives which apply to it.
• In standard, motor impact test corresponds to the 'low' risk of mechanical danger, and the motors must hence be
installed in an environment with a low shock risk.
• If the taper of the openings intended to receive cable or duct entries have a metric thread, no specific marking will
be present on the motor; if the type of thread is different or mixed, its type is marked on the equipment.
• All the accessories (cable entries, plugs, etc.) mentioned in this manual must be of a type which is approved or
certified by the group, the application (gas and/or dust) and the temperature class must correspond at least to
those of the location of the appliance (see the indications on the motor nameplate). The instructions in their
instruction manuals must be respected when they are installed.
• Any unused openings must be covered with screwed plugs.
• The installation of all these elements must guarantee the protection mode (Ex) and the index (IP) specified on
the motor nameplate. To ensure the IP6X level of watertightness (which is vital in the case of GD marking) the
cable entry or blocking devices must be made tight by positioning a flat or o-ring seal; this watertightness may also
be provided in the thread using silicon or polyurethane mastic or pasted to the thread block.
BEFORE INSTALLATION
• Ensure compatibility of the information on the motor nameplate with the actual explosive atmosphere, the
operating zone and the ambient temperature.
• The motors must be stored in their original packaging and in premises protected against moisture (HR<90%)
and vibrations.
- Motors fitted with lifetime greased bearings: maximum storage time = 3 years; beyond this time, replace the
bearings with identical ones.
- Motors fitted with greasers (see general manual ref. 3614).
• Check that the ventilation cover has no traces of impact.
MECHANICAL INSTALLATION
• The motors are factory-fitted with guidance labels which must be left in place.
• Before commissioning, drain any condensation water from inside the motors (see § "Regular servicing").
• Monitor the state of the seals and replace them periodically if necessary (minimum once per year for the GD
motors). After any work involving dismantling the motors replace all the weatherproof seals with new seals after
cleaning the parts. Where the shaft crosses, make sure that the seals are not damaged on contact with the key
entries and shoulders.
• The belts must be antistatic and flame-resistant.
POWER CONNECTION
• Before commissioning, the "plastic" or non approved type plugs must be replaced either by cable or conduit
entries or by screwed plugs must be of an approved type and adapted the area. The unused cable or conduit
entries must be replaced with screwed plugs must be of an approved type and adapted the area.
• As opposed to the attached cable(s), the motor must either be connected outside an explosive atmosphere, or
be protected by an type of protection adapted to the application (gas and/or dust) and the temperature class
which correspond at least to those of the location of the appliance (see the indications on the motor nameplate).
• The supply voltage and frequency must conform to those indicated on the motor nameplate.
• The tolerance is ±10% on the assigned voltage (only 1 assigned voltage per motor) and the frequency tolerance
±1%. This means for example that the same 400V ±10% 50Hz motor may function on the 380V ±5% or 415V ±6%
50Hz Nominal Power networks. Consult us for any other power supply conditions.
• The choice of connecting cables is determined by the current, voltage, length, the temperature, "T.cable" (if
present on the motor nameplate).
• The connection must satisfy the installation rules dictated by the standards and the application of current
regulations and must be performed under the responsibility of a qualified person who must ensure:
- the conformity of the junction box (IP protection, mode, etc.),
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