WEG WGM20 Series Installation, Operation & Manintenance Manual Download

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14108242 Installation, operation and maintenance manual – Squirrel cage motor – WGM20 Line l 49

DECLARATION OF CONFORMITY

Summary of Contents for WGM20 Series

Page 1: ...utomation I Energy I Transmission Distribution I Coatings Three phase induction motors cooled by water jacket WGM20 line Squirrel cage rotor Horizontal and Vertical Installation Operation and Maintena...

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Page 3: ...Installation Operation and Maintenance Manual Document Number 10005256831 Material number 14108242 Model WGM20 Language English Revision 01 March 2018...

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Page 5: ...efore 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 equipment an...

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Page 7: ...17 3 3 3 6 Bearings 17 3 3 3 7 Terminal boxes 17 3 3 3 8 Cleanliness and conservation of the motor during storage 17 3 3 3 9 Inspections and records during storage 17 3 3 3 10 Predictive preventive m...

Page 8: ...ng 28 4 8 8 Couplings 28 4 8 8 1 Direct coupling 28 4 8 8 2 Gear coupling 28 4 8 8 3 Belt drive 28 5 STARTING 30 5 1 DIRECT ON LINE STARTING 30 5 2 DIRECT ONLINE STARTING FREQUENCY 30 5 3 LOCKED ROTOR...

Page 9: ...assembly 40 7 10 9 4 NDE vertical bearing disassembly 40 7 10 9 5 Bearing assembly 41 7 10 9 6 Bearing insulation 41 7 10 10Rolling bearing replacement 41 7 10 11Bearing protection 41 7 10 11 1 Protec...

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Page 11: ...s 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 of the per...

Page 12: ...n 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 the equipment They have...

Page 13: ...ls 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 2 1 Volta...

Page 14: ...the final assembly A complete visual inspection 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...

Page 15: ...heaters must remain powered during storage in order to avoid moisture condensation inside the motor Any damage to the paint or corrosion protection of the machined parts must be repaired 3 3 1 Outdoor...

Page 16: ...tation and fungus formation the package must be protected in the storage place by spraying it or painting it with appropriate chemicals The package preparation must be prepared carefully by an experie...

Page 17: ...erminal boxes must also be inspected observing the following aspects The inside must be dry clean and free of any dust accumulation The contact elements cannot present corrosion The seals must be in p...

Page 18: ...inal boxes X X Inspect the seals and gaskets X X BEARINGS Rotate the shaft X Relubricate the bearing X Disassemble and clean the bearing If the storage period exceeds 2 years 3 3 4 Preparation for com...

Page 19: ...operation it must be protected against moisture high temperatures and dirt thus avoiding impacts on the insulation resistance The winding insulation resistance must be measured before putting the moto...

Page 20: ...n index allows the assessment of the motor insulation conditions DANGER In order to avoid accidents the winding must be grounded immediately after measuring the insulation resistance 4 4 6 Conversion...

Page 21: ...ure the working conditions are considered special and the motor specific documentation must be consulted The Table 4 4 shows the numerical values and the composition of the acceptable temperature at t...

Page 22: ...connecting cables must be shielded and the shield must be grounded The installation of the signal cables should be done in a linear manner avoiding turns and should not be installed near of the power...

Page 23: ...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 45 155 82 156 19 156 57 156 94 150 157 31 157 69 158 06 158...

Page 24: ...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 motor 4 6 1 1 Cooling system...

Page 25: ...x with the cover 3 NOTE The stator terminal box allows for 180 rotation in horizontal motors and 90 in vertical motors Figure 4 5 Stator terminal box Figure 4 5 legend 1 Stator terminal box 2 Connecti...

Page 26: ...ust be tightened The rail closer to the driving pulley must be mounted so that the positioning bolt is placed between the motor and the driven machine The other rail must be mounted with the bolt in t...

Page 27: ...rregularities on the dial gauge tip Choosing the upper vertical point as 0 half of the difference between the dial gauge measurements at the 0 and 180 points represents the vertical coaxial error In c...

Page 28: ...or removed with the aid of proper devices and never by means of rudimentary tools such as hammers sledgehammers etc ATTENTION Dowel pins nuts washers and leveling shims may be supplied with the motor...

Page 29: ...evented by applying a resin like material such as pitch for instance The belt tension must be just enough to prevent slippage during operation NOTE Belts too tensioned increase the load on the shaft e...

Page 30: ...uction 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 are too shor...

Page 31: ...the space heaters 2 Set the protections in the control panel 3 Turn ON the water cooling system checking the necessary flow and pressure and the temperature of the cooling water 4 Rotate the motor sh...

Page 32: ...when the purchase contract specifies different values The vibration measurements are carried out on the NDE and DE bearings in the vertical horizontal and axial directions When the customer sends the...

Page 33: ...ance 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 investigate...

Page 34: ...r an increase in cooling water temperature it indicates an increase of scale formation in the channels which over time can clog and impair the water circulation In this case the cooling water channels...

Page 35: ...or Table 8 2 and locked with chemical lock 7 6 VIBRATION Any evidence of increase in the unbalance or vibration of the motor must be investigated immediately 7 7 MOTOR OUT OF OPERATION When the motor...

Page 36: ...o make the lubrication with the motor in operation in order to ensure the renewal of the grease in the rolling bearing housing If that is not possible due to the presence of rotating parts near the gr...

Page 37: ...es for regular applications Manufacturer Grease Constant operating temperature C Multiplication factor Exxon Mobil UNIREX N3 Lithium Complex Soap 30 to 150 0 90 Shell ALVANIA RL3 Lithium Soap 30 to 12...

Page 38: ...perties of the mixture are within the property ranges of the greases individually In general greases with the same type of soap are compatible however depending on the proportion of the mixture there...

Page 39: ...rew 7 that fasten the grease flinger 5 Remove the grease flinger 4 6 Remove the DE end shield of the motor 2 7 Remove the bearing 3 8 Remove the internal bearing cap 6 if is necessary 7 10 9 2 NDE hor...

Page 40: ...the bearing 3 8 Remove the internal bearing cap 5 if is necessary 7 10 9 4 NDE vertical bearing disassembly Figure 7 9 NDE vertical bearing Figure 7 9 legend 1 Shaft 2 NDE end shield 3 Bearing 4 Grea...

Page 41: ...tions in the reverse order Figure 7 10 External bearing cap 7 10 9 6 Bearing insulation The motor has insulated NDE end shield and shaft grounding brush to prevent the passage of electric current thro...

Page 42: ...hreaded connection cable 1 Motor accessory 2 Accessory connection cable Accessory location Accessory disassembly assembly Pt 100 of water inlet and outlet Water leakage sensor Horizontal Motors Water...

Page 43: ...and coil heads support the shaft on DE and NDE sides 8 1 1 Disassembly 1 Disconnect the cables of the bearings temperature sensors in the accessories terminal box 2 Disassemble the DE bearing 6 and th...

Page 44: ...rminal box 2 Disassemble the DE bearing 6 and the motor DE end shield 4 as described in item 7 10 9 3 3 Remove the KMT nut 16 that fasten the NDE bearing 4 Disassemble the NDE bearing 8 and the motor...

Page 45: ...3 510 338 382 254 M30 3 5 693 461 520 346 M33 3 5 937 622 703 466 M36 4 1207 802 905 602 M42 4 5 1929 1280 1447 960 M48 5 2892 1918 2170 1440 NOTE The resistance class is normally indicated on the hea...

Page 46: ...tions 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 COOLING SYSTEM Verification...

Page 47: ...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 repair the rotor win...

Page 48: ...ose Retighten and lock the screws The rotor balancing conditions become worse after the assembly of the coupling Balance the coupling Resonance in the foundation Adjust the foundation Motor frame defo...

Page 49: ...www weg net 14108242 Installation operation and maintenance manual Squirrel cage motor WGM20 Line l 49 12 DECLARATION OF CONFORMITY...

Page 50: ...nty in connection with this sale 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...

Page 51: ...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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