Summary of Contents for Nidec Leroy-Somer FLSN Series
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Commissioning and maintenance guide LSN - FLSN Ex ec IIC T3 Gc Three-phase asynchronous motors for explosive gas and dust atmospheres Reference: 5724 en - 2020.02 / c...
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NOTE: NIDEC LEROY-SOMER reserves the right to modify the characteristics of its products at any time in order to incorporate the latest technological developments. The information contained in this document is therefore liable to be changed without notice.
R ☐ I D du / from 2017/12/15 We, Constructions Electriques de Beaucourt (CEB), 14, Rue de Dampierre, 90500 BEAUCOURT, France, (a company of the Nidec Leroy-Somer MOTEURS LEROY SOMER, Bd - Marcellin LEROY 16915 Angoulême cedex 9 France,...
Constructions Electriques de Beaucourt (CEB) and NIDEC LEROY-SOMER cannot be held liable for non-compliance with all or part of the above or with any part of this manual.
• During this starting period (up to 50 hours operation Greases used by NIDEC LEROY-SOMER: after the last top up) there must be intensive monitoring. See nameplates. The bearing housing temperatures and vibration must be measured frequently.
Before commissioning remove condensation (see §10.4 optional equipment. The actual weight of each Nidec Leroy- - ROUTINE MAINTENANCE) Somer motor is indicated on its nameplate. The positions of the...
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec Check that the fan cover bears no impact marks. Motors intended for use in the vertical position may be delivered on pallets in a horizontal position. Blocking (clogging) the cover grille and the housing fins, When the motor is pivoted, the shaft must under no even accidentally, will adversely affect the operation of circumstances touch the ground as the bearings could...
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 4.3 - Preparation of the fixing support Balancing Rotating machines are balanced in accordance with standard Installers must pay particular attention to ensuring good IEC 34-14: preparation of the motor fixing support. - half-key when the shaft extension is marked H.
5.5 - Operating duty The five essential modes are: Nidec Leroy-Somer spark-free motors are certified for - D.O.L. starting, operating in S1, S2, S6 and S9 duty and in accordance with - star/delta starting, IEC/EN 60034-1.
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 6 - USE Thermal protection devices (see § 8) and heaters Operating Operating Switch Mounting Type Protection provided principle curve rating (A) Number of devices* non-linear variable resistor, Positive temperature Mounted with associated relay indirectly heated general surveillance...
(see § 3) and turn the shaft by hand before operating the machine. - NIDEC LEROY-SOMER “Digistart” electronic starter This is micro-controlled multi-function electronic system, If the motor is to be used at a temperature lower than - 20°C, it which is used with all squirrel-cage asynchronous three-phase may be fitted with heaters.
(even at 50 Hz). Nidec Leroy-Somers’ area of specialist expertise, we describe Reducing the speed leads to a reduction in air flow and hence the best ways to deal with variable speed in the section below.
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INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 7.1.2 - Minimum recommendations - Heaters must only be supplied when there is no supply to the motor and the latter is cold. Their use is recommended for The specific instructions given in the specific instruction ambient temperatures of less than -20°C.
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INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 7.1.4 - Extreme operating conditions and b - The frequency inverter is supplied by Nidec Leroy-Somer As these motor-drive assemblies have been specifically specific features designed for use in combination, excellent performance is MOTOR CONNECTIONS guaranteed.
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 8 - ADJUSTMENT Direct connection using a coupling sleeve Selection of the coupling sleeve should take account of the rated torque to be transmitted and the safety factor dependent Tolerances and adjustments on the starting conditions for the electric motor.
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec Positioning the belts Adjustable distance between centres: The motor is usually mounted on slide rails, which enables The belts must be anti-static and flame optimum adjustment of the pulley alignment and the belt propagation must only occur with difficulty.
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 9 - MAINS CONNECTION Installers are responsible for ensuring that the leak-tightness of cable passages is achieved (see 9.1 - Terminal box the motor nameplate and the cable gland fitting instructions).
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 9.3 - Terminal block connection wiring Adaptors (expanders or reducers) underneath plugs are prohibited. 1 adaptor only is allowed per cable gland. diagram If the connection box is type “eb” and comprises one or more All motors are supplied with a wiring diagram in the terminal threaded holes intended to receive cable glands, then unless box.
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 9.6 - Connecting the power supply Tightening torque (N.m) on the slotted terminal block nuts Terminal KS7A KS8A KS10A KS14A KS18A cables to the terminal block Steel The cables must be fitted with connectors suitable for the cable Max connection cross-section for slotted terminal blocks cross-section and the terminal diameter (diagram 1 and 3).
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INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 9.6.4 - Connections - Connection of auxiliaries on the three-pole Bartec terminal strips ref. 07-9702-0320/1 (AECE: PTB99 ATEX 3117 U - IECEx PTB 07.0007U) provided for auxiliaries (sensors, heaters etc.). : * max tightening torque: 0.4 N.m * max total cross-section per connection: 2.5 mm²...
INSTALLATION MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 9.7 - Indication of cable gland size and type for 400V rated supply voltage if drillings required without details of hole diameters being given Power + auxiliaries Series Type Polarity Number of holes Hole diameter 2 ;...
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 9.8 - Admissible number and maximum size of holes for cable glands per “eb” terminal block - FLSN 160 to 225: 4 ISO20 or 2 ISO40 + 2 ISO20. - FLSN 250 & 280: 8 ISO20 or 2 ISO75 + 2 ISO20. - FLSN 315 &...
Service Centres are trained and approved by Nidec Leroy-Somer to guarantee that these motors are safely maintained and repaired. Maintenance and service guide - LSN-FLSN ZONE 2 - Ex ec...
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 10.2 - Corrective maintenance: General 10.2.3 - Fitting bearings onto the shaft This is a critical operation. The slightest traces of ball marks left Corrective maintenance can only be carried out by on the bearing tracks could result in noise and vibration.
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 10.2.5 - Refitting the terminal box Note: In conditions of high humidity and significant temperature variations, or an extended shut-down, a shorter period is Re-connect all power supply wires in accordance with the recommended.
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec LSN permanently greased bearings: The interval between greasing operations must never, under any circumstances, exceed 2 years, Types of permanently greased bearings even in the event of prolonged storage or downtime. Series Type Polarity...
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INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec FLSN bearings with grease nipples: Lubrication intervals in hours Type of bearings for bearing Quantity of housings with grease nipples grease 3000 rpm 1500 rpm 1000 rpm Series Type Polarity N.D.E.
After removal of the terminal box cover, replace the seal using a new seal of the same type after Nidec Leroy-Somer recommendations: cleaning the components if its condition no longer guarantees the required degree of protection. • Earth continuity between the various metallic parts must be ensured: frame, bearing housings, fan cover etc.
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 10.8 - Troubleshooting guide Incident Possible cause Remedy Uncouple the motor from the equipment being Abnormal noise Originating in motor or machine being driven? driven and test the motor on its own Mechanical cause: if the noise persists after Noisy motor cutting off the electrical supply...
10.9 - Preventive maintenance Consult NIDEC LEROY-SOMER, who offer a preventive maintenance system through its Maintenance Industrie Services network. This system enables data to be obtained on site of the parameters at different points as indicated in the table below.
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 11 - REMOVAL AND REFITTING (Drawings do not foresee the construction’s details) PROCEDURE 11.1 - LSN 80 to LSN 160 MP/LR FLSN 80 to 132 motors 11.1.1 - Removal - Remove the cover (13) once the screws (27) are removed; - extract the fan (7) using a hub puller or failing this two (F)LSN 80 - 90 (F)LSN 80 - 90...
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INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec LSN 80 to LSN 160 MP/LR - FLSN 80 to FLSN 132 71 b IM B3 IM B14 IM B5 LSN 80 to LSN 160 MP/LR - FLSN 80 to FLSN 132 Item Designation Item...
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 11.2 - LSN 160 M/L, LSN 180 MT/LR motors 11.2.1 - Removal - Remove the cover (13) once the screws (27) are removed; - extract the fan (7) using a hub puller or failing this two LSN 160 M/L - LSN 180 MT/LR LSN 160 M/L - LSN 180 MT/LR foot mounted motors...
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 11.3 - LSN 180 L, LSN 200, LSN 225 ST/ MT/MR, LSN 250 MZ motors 11.3.1 - Removal - Remove the cover (13) once the screws (27) are removed; LSN 180 L - LSN 200 LSN 180 L - LSN 200 - extract the fan (7) using a hub puller or failing this two foot mounted motors...
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 11.4 - LSN 250 ME, LSN 280 SC/MC LSN 250 ME LSN 250 ME motors LSN 280 SC/MC LSN 280 SC/MC with feet or flanged with feet or flanged standard bearings dive-end roller bearings 11.4.1 - Removal - Remove the cover (13) once the screws (27) are removed;...
INSTALLATION MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 11.5 - LSN 280 SD/MD, LSN 315 motors - fit the external cap (52) using cap locking screws (62) taking care that the grease removal hole is at the bottom point; 11.5.1 - Removal - fit the flange (5) front rear, positioning it on the stator then fit the fixed valve (34) in the housing of the flange;...
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INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec LSN 280 SD/MD, LSN 315 LSN 280 SD/MD, LSN 315 Item Designation Item Designation Item Designation Wound stator Coupling-side bearing Rear inner cap Housing Coupling-side outer cap Rear seal Rotor Coupling-side inner cap Rear fixed grease valve Coupling-side flange...
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 12 - FLSN MOTORS 12.1 - FLSN 160 and 180 motors 12.1.1 - Removing the rear bearing housing - Remove the cover (13) once the fixing screws (27) have been removed;...
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INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec FLSN 160 and 180 FLSN 160 and 180 Item Designation Item Designation Item Designation Wound stator Cover fixing screw Rear preload washer Frame Coupling-side bearing Rear grease nipple Rotor Front inner cover Stator terminal box body Coupling-side flange Front lip seal...
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 12.2 - FLSN 200 to 225 ST motors From this point on we recommend that at every step you check that the motor rotates freely by hand before moving 12.2.1 - Removing the rear bearing housing on to the next instruction.
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INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec FLSN 200 to 225 ST FLSN 200 to 225 ST Item Designation Item Designation Item Designation Wound stator Front inner cover Mobile part of the rear grease valve Frame Fixed part of the front grease valve Rear preload washer Rotor Mobile part of the front grease valve...
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 12.3 - FLSN 225 M to 280 motors From this point on we recommend that at every step you check that the motor rotates freely by hand before moving 12.3.1 - Removing the rear bearing housing on to the next instruction.
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INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec FLSN 225 M to 280 FLSN 225 M to 280 Item Designation Item Designation Item Designation Wound stator Nameplate Terminal box base seal Frame Cover fixing screw Stator terminal box body Rotor Coupling-side bearing Stator terminal box cover...
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 12.4 - FLSN 315 S to 355 LD motors From this point on we recommend that at every step you check that the motor rotates freely by hand before moving on to the next instruction.
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INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec FLSN 315 S to 355 LD 12 11 65 64 270 272 FLSN 315 S to 355 LD Item Designation Item Designation Item Designation Wound stator Cover fixing screw Stator terminal box body Frame Coupling-side bearing Stator terminal box cover...
INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec 12.5 - FLSN 355 LK to 450 motors - refit the bearing housing fixing screws; - refit the cover fixing screws; 12.5.1 - Removing the rear bearing housing refit the mobile part of the grease valve; - Withdraw the grease nipple extension (65);...
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INSTALLATION AND MAINTENANCE – LSN-FLSN ZONE 2 – Ex ec FLSN 355 LK to 450 FLSN 355 LK to 450 Item Designation Item Designation Item Designation Wound stator Cover fixing screw Rear grease nipple extension Frame Coupling-side bearing Stator terminal box body Rotor Front inner cover Stator terminal box cover...
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Moteurs Leroy-Somer SAS Headquarters: Boulevard Marcellin Leroy - CS 10015 16915 ANGOULÊME Cedex 9 Joint stock company with a capital of € 65,800,512 RCS Angoulême 338 567 258 www.leroy-somer.com...