Regular Servicing - Nidec Leroy-Somer FLSD Ex db Serie Instalación Y Mantenimiento

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• When a drive is used, any special instructions detailed in the specific drive manual must be complied with.
• When several motors are supplied by the same drive, provide individual protection on each motor starter
(thermal relay).

REGULAR SERVICING

• The frequency of inspections depends on the climactic and specific operating conditions and will be established
after one year of use.
• If the motor is fitted with drain holes, they must be sealed with Ex db threaded drain plugs to maintain the
explosion proof rating of the motor. Condensation draining is recommended every 6 months. Carefully replace
and tighten the drain plugs afterwards.
• After removing the cover or (and) body of the "db" or "db eb" junction box, make sure the screws are in good
condition and there are no scratches or dents on the surfaces of the flameproof seals (clean and regrease them
before assembly). Ensure that all screws are correctly positioned and tightened sufficiently to guarantee the
enclosure is firmly closed and the motor's flameproof properties are maintained.
• With terminal box "eb", 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.
• When closing the junction box Ex eb, make sure that all the waterproof seals are positioned correctly and that
CAF30 or CAF33 silicon sealant is applied on one of the 2 contact surfaces.
• Ensure that the screws are properly tightened in order to guarantee the IP protection level marked on the
nameplate.
• Remove dust from the machine frequently from casing and the cover openings and air outputs (risk of increased
surface temperatures): clean at low pressure from the centre to the edges of the machine.
• Instructions for IIC and III motors: electrostatic risk. See § IMPORTANT at the beginning of these instructions.
Unless prior agreement is received from the manufacturer, any intervention which may affect the safety of
the motor is performed under the responsibility of the operator. Contact NIDEC LEROY-SOMER before
carrying out any work on the flameproof seals. The repairs must be carried out by an ATEX-approved repair
specialist.
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