WEG WGM Page 3 Installation, Operation And Maintanance Manual Download

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Installation, Operation and Maintenance Manual

Document Number: 11239449

Model: WGM

Language: English

Revision: 8

February 2017

Summary of Contents for WGM

Page 1: ...Automation I Energy I Transmission Distribution I Coatings Three phase induction motors cooled by water jacket W line Squirrel cage rotor Horizontal and Vertical Installation Operation and Maintenanc...

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Page 3: ...Installation Operation and Maintenance Manual Document Number 11239449 Model WGM Language English Revision 8 February 2017...

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Page 5: ...motor Therefore we recommend that you read this manual carefully before proceeding with the installation operation or maintenance of the motor in order to ensure safe and reliable operation of your eq...

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Page 7: ...ated rolling bearing 17 3 3 3 6 Terminal box 17 3 3 3 7 Inspections and records during storage 17 3 3 3 8 Predictive preventive maintenance 17 3 3 3 9 Maintenance plan during storage 18 3 3 4 Preparat...

Page 8: ...Sliding base 29 4 8 3 3 Metal base 30 4 8 3 4 Anchor bolts 30 4 8 4 Natural frequency of the base 30 4 8 5 Leveling 30 4 8 6 Alignment 30 4 8 7 Doweling 31 4 8 8 Couplings 31 4 8 8 1 Direct coupling...

Page 9: ...ontal bearings 42 7 10 1 10 Disassembly vertical bearings 43 7 10 1 10 1 Before disassembling 43 7 10 1 10 2 Lower bearing disassembly 44 7 10 1 10 3 Upper bearing disassembly 44 7 10 1 11 Bearing ass...

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Page 11: ...bout motors with major special features is necessary consult WEG All procedures and standards contained in this manual must be observed in order to ensure proper operation of the motor and the safety...

Page 12: ...sures during installation for example keep people away avoid contact of children etc Those responsible for the safety of the installation must ensure that Only qualified personnel install and operate...

Page 13: ...or terminals within the limits in accordance with the IEC60034 1 standard Voltage may vary within a range of 10 of the rated value Frequency may vary within a range of 5 to 3 of the rated value Figure...

Page 14: ...of the motor must be carried out after removing the package The shaft locking system must be removed just before the installation and stored to be used in future transportation of the motor 3 2 HANDL...

Page 15: ...the machined parts must be repaired 3 3 1 Outdoor storage The motor must be stored in a dry location free of flooding and vibrations Repair any damages on the package before storing the motor which i...

Page 16: ...that additional protections be added to the motor package during the storage period as follows A closed wooden crate or the like with an electrical installation that allows the energization of the sp...

Page 17: ...stored for a period exceeding two years the rolling bearings must be disassembled washed inspected and relubricated 3 3 3 6 Terminal box When the insulation resistance of the motor windings is measur...

Page 18: ...X Whenever necessary SPACE HEATER Check the operating conditions X Measure the circuit voltage and frequency X Check the function of the signal system if any X WHOLE MOTOR Perform external cleaning X...

Page 19: ...3 3 4 2 Bearing lubrication Use the lubricant specified for bearing lubrication Information on the bearings and lubricants are indicated on the bearing nameplates and the lubrication must be done as d...

Page 20: ...lation resistance Failure to comply with these procedures may result in personal injury 4 4 2 General considerations When the motor is not immediately put into operation it must be protected against m...

Page 21: ...ommended to measure the insulation resistance of thermal protectors 4 4 5 Polarization Index The polarization index is defined by the ratio between the insulation resistance measured in 10 minutes and...

Page 22: ...rmistors PTC or NTC Are thermal detectors composed of semiconductors that vary their resistance sharply when they reach a certain temperature Thermistors are connected in series or independently accor...

Page 23: ...p temperatures must not exceed the maximum admissible temperatures for the stator winding insulation class and for the bearings considering the lubrication type and system according to Table 4 5 Table...

Page 24: ...1 145 68 120 146 06 146 44 146 81 147 19 147 57 147 94 148 32 148 70 149 07 149 45 130 149 82 150 20 150 57 150 95 151 33 151 70 152 08 152 45 152 83 153 20 140 153 58 153 95 154 32 154 70 155 07 155...

Page 25: ...oling system informed on the motor cooling system nameplate must be strictly followed The water inlets and outlets must not be obstructed because it can cause overheating or even lead to burning the m...

Page 26: ...r drive end Motors with a single rotation direction must only rotate in the indicated direction since fans and other devices are unidirectional In order to operate the motor in the rotation direction...

Page 27: ...1 1 Stator connection diagrams 3 TERMINALS 6 TERMINALS 6 TERMINALS DAHLANDER Y LOWER SPEED YY HIGHER SPEED Y LOWER SPEED YY LOWER SPEED HIGHER SPEED 3 TERMINALS NEUTRAL 9 TERMINALS 12 TERMINALS YY Y Y...

Page 28: ...connections 4 7 2 3 Rotation direction The rotation direction is indicated on the nameplate and must be observed looking to the shaft end at the motor drive end The rotation direction must be checked...

Page 29: ...ion blocks and the mortar Fasten the foundation blocks to the motor feet using bolts Use shims of different thicknesses total thickness of approximately 2 mm between the motor feet and the foundation...

Page 30: ...next The first natural frequency of the base or foundation first order natural frequency of the base must be out of the range from 0 8 to 1 25 times any of the potential excitation frequencies above...

Page 31: ...e value allowed by the coupling manufacturer It is recommended to keep a safety margin for these values In the alignment leveling the influence of the temperature on the motor and the driven machine m...

Page 32: ...ontrolled with the insertion of a paper strip on which the trace of all teeth shows up after a gear turn 4 8 8 3 Belt drive Figure 4 14 Belt drive When a reduction or increase in speed is required the...

Page 33: ...Since induction motors have a high starting current the time spent to accelerate loads with high inertia results in a quick rise of the motor temperature If the intervals between successive starts ar...

Page 34: ...r cooling water supply system 12 Motor air inlets and outlets must be unobstructed 13 The moving parts of the motor must be protected to prevent accidents 14 Check if the power supply voltage and freq...

Page 35: ...differential pressure at the water inlet and outlet be measured and recorded periodically These values must be periodically compared to the original value and an increase in the pressure differential...

Page 36: ...peed the stator magnetic field speed will be equal to the rotor speed and thus there will be no current induction on the rotor and consequently no energy will be generated 6 4 2 Slip The asynchronous...

Page 37: ...ation resistance measurements must be done at regular intervals especially during humid weather and after prolonged motor stoppages Low values or sudden variations in the insulation resistance must be...

Page 38: ...otor If the motor remains stopped in environments with negative temperatures the freezing of the motor cooling circuit water must be prevented This can be done by draining all the water from the frame...

Page 39: ...0 C 0 63 Between 80 and 90 C 0 40 Between 90 and 100 C 0 25 Between 100 and 110 C 0 16 7 10 1 2 Procedures for rolling bearing relubrication 1 Remove the drain plug 2 Clean with a cotton cloth around...

Page 40: ...rval must be corrected by multiplying the interval informed on the bearing nameplate by the multiplication factor informed in Table 7 2 3 Use the correct procedure to change the grease according to se...

Page 41: ...1200 1200 1500 900 900 6252 190 1000 1000 900 900 900 6315 30 3000 3000 3000 1800 1800 6316 35 3000 3000 1800 1800 1800 6317 40 3000 3000 1800 1800 1800 6319 45 1800 1800 1800 1800 1800 6320 50 1800...

Page 42: ...7 10 1 7 Low temperature greases Table 7 4 Grease for application at low temperatures Manufacturer Grease Constant operating temperature C Application Exxon Mobil MOBILITH SHC 100 Lithium Soap and Sy...

Page 43: ...following guidelines 1 Remove the screws 4 from the outer and inner bearing caps 5 and 11 2 Remove the outer bearing cap 5 3 Remove the screw 6 that fixes the grease flinger 7 4 Remove the grease fli...

Page 44: ...earing cap 7 4 Remove the KMT nut 9 5 Remove the screws 11 and 12 and remove the bearing hub 6 Remove the upper end shield 14 7 Move the intermediate ring and the inner bearing cap away from the beari...

Page 45: ...ated bearing Disassembly instructions If it is necessary to remove the Pt100 for bearing maintenance proceed according to the following instructions Remove the Pt100 carefully locking the locknut 3 an...

Page 46: ...sories 4 Remove the grease nipple extenders and the device to remove the grease from the bearings 5 Remove the bearing temperature sensors and the grounding brush if any 6 In order to prevent damages...

Page 47: ...earing 6 and the lower end shield 7 8 Remove the shaft protection cover 12 and the fastening nut of the upper rolling bearing 13 9 Disassemble the upper bearing 9 and the upper end shield 8 10 In orde...

Page 48: ...2 70 or above Yield Strength 33 33 Lubricant Dry Molycote 1000 Dry Molycote 1000 Diam Pitch mm Screws tightening torque Nm M3 0 5 0 6 0 5 0 48 0 32 M4 0 7 1 5 1 1 1 0 76 M5 0 8 3 2 2 2 1 5 M6 1 5 2 3...

Page 49: ...on of the shaft wear incrustations x BEARINGS Control of noise vibration leaks and temperature x Lubricant quality control x Lubricant change According to the period indicated on the bearing nameplate...

Page 50: ...fter the start Check the power cables The stator current oscillates under load with double the slip frequency The motor presents a humming noise during starting Rotor winding is interrupted Check and...

Page 51: ...t the stator Check the air gap operating conditions vibration etc bearing conditions The operating condition does not correspond to the nameplate data Keep the operating condition according to the nam...

Page 52: ...www weg net 52 l Installation operation and maintenance manual Squirrel cage motor W Line Horizontal and vertical 11239449 11 DECLARATION OF CONFORMITY...

Page 53: ...m and plastic The electric motor in general is a product that has a long useful life however when it must be disposed WEG recommends that the materials of the packaging and of the product be properly...

Page 54: ...e and is in lieu of all other warranties expressed or implied written or oral There are no implied warranties of merchantability or fitness for a particular purpose that apply to this sale No employee...

Page 55: ...remona Phone 39 374 340 404 www ferrarisrl it STIAVELLI IRIO S P A Via Pantano Blocco 16 Capalle 50010 Campi Bisenzio FI Phone 39 55 898 448 www stiavelli com JAPAN WEG ELECTRIC MOTORS JAPAN CO LTD Yo...

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