Related Manuals for WEG M line Series
Summary of Contents for WEG M line Series
- Page 1 Motors I Automation I Energy I Transmission & Distribution I Coatings Low and high voltage three phase induction motors M line - Squirrel cage rotor - Vertical Installation, Operation and Maintenance Manual...
- Page 3 Installation, Operation and Maintenance Manual Document Number: 11371757 Models: MGA, MGP, MGD, MGT, MGV, MGF, MGR, MGI, MGW Language: English Revision: 7 May 2018...
- Page 5 1. The total or partial reproduction of information supplied in this manual is authorized, provided that reference is made to its source. If this manual is lost, an electronic PDF file is available at www.weg.net or another printed copy may be requested.
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Page 7: Table Of Contents
TABLE OF CONTENTS INTRODUCTION ....................11 SAFETY WARNINGS IN THE MANUAL ................... 11 GENERAL INSTRUCTIONS ................12 QUALIFIED PERSONNEL ........................ 12 SAFETY INSTRUCTIONS ........................ 12 STANDARDS ........................... 12 ENVIRONMENTAL CONDITIONS ....................13 OPERATING CONDITIONS ......................13 VOLTAGE AND FREQUENCY ......................13 RECEIVING, HANDLING AND STORAGE ............ - Page 8 4.5.1.2 Alarm and trip temperatures ....................24 4.5.1.3 Temperature and ohmic resistance of the PT100 thermoresistance ........25 4.5.1.4 Space heater ........................25 4.5.2 Water leak sensor ..........................25 COOLING ............................25 4.6.1 Air-water heat exchange cooling ......................25 4.6.1.1 Radiators for application with seawater ................25 4.6.2...
- Page 9 7.3.4 Reimpregnation ..........................37 7.3.5 Insulation Resistance .......................... 38 COOLING SYSTEM MAINTENANCE ....................38 RADIATOR MAINTENANCE ......................38 VIBRATION............................38 ANTI-REVERSION RATCHET MAINTENANCE ................38 SHAFT GROUNDING DEVICE ......................38 BEARING MAINTENANCE ......................39 7.9.1 Grease-lubricated rolling bearings ....................... 39 7.9.1.1...
- Page 10 14 WARRANTY TERM .................... 56 10 l Installation, operation and maintenance manual – Squirrel cage motor – M line – Vertical 11371757...
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Page 11: Introduction
If any additional explanation about 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 of the personnel involved in its operation. -
Page 12: General Instructions
2 GENERAL INSTRUCTIONS All the personnel involved with the assembly, operation or maintenance of electrical installations must be permanently informed and updated on the standards and safety instructions that guide the job and are advised to strictly comply with them. -
Page 13: Environmental Conditions
2.4 ENVIRONMENTAL CONDITIONS 2.6 VOLTAGE AND FREQUENCY The motor was designed according to the specific It is very important to ensure a proper power supply for environmental conditions (temperature and altitude) of the motor. The conductors and the entire protection... -
Page 14: Receiving, Handling And Storage
ATTENTION Any damage must be photographed, documented and reported immediately to the carrier, the insurer and WEG. The non- communication of this damage will void the warranty. ATTENTION Parts supplied in additional packages must be checked upon receipt. -
Page 15: Motor Positioning
3.2.1 Motor positioning ATTENTION Vertical motors are supplied with lifting lugs at the drive Space heaters must remain powered during end DE and non-drive end NDE. storage in order to avoid moisture Some motors are transported in the horizontal position condensation inside the motor. -
Page 16: Indoor Storage
If any of these requirements is not met in the storage site, acceptable levels. WEG suggests that additional protections be added to the The space heaters drive circuit must be unique and the motor package during the storage period, as follows:... -
Page 17: Bearings
3.3.3.5 Bearings The oil level must be respected, remaining in the middle of the oil sight glass; Every two months, the shaft-locking device must be 3.3.3.5.1 Grease-lubricated rolling bearing removed, and the motor rotor must be rotated at least 10... -
Page 18: Air-Water Heat Exchanger
WEG recommends that, every 3 years of storage, the radiator seals must be replaced every 3 years, as stored motor be sent to a WEG Authorized Repair Shop or recommended by the radiator supplier. to WEG own factory, in order to perform a complete predictive maintenance. -
Page 19: Maintenance Plan During Storage
3.3.3.11 Maintenance plan during storage During the storage period, the motor maintenance must be performed and recorded according to the plan described in Table 3.1. Table 3.1: Storage plan Before Monthly Notes months months years start-up STORAGE LOCATION Inspect the cleanliness conditions... -
Page 20: Preparation For Commissioning
Reassemble the sleeve bearings and carry out lubrication. Contact WEG to perform this procedure. 3.3.4.3 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 described in section 1.1 of this manual, always... -
Page 21: Installation
In order to operate the motor in the direction opposite to the specified, consult WEG. l 21 11371757 Installation, operation and maintenance manual – Squirrel cage motor – M line – Vertical... -
Page 22: Insulation Resistance
4.4 INSULATION RESISTANCE 4.4.1 Safety Instructions MΩ MΩ DANGER In order to measure the insulation resistance, the motor must be turned off and stopped. Figure 4.4: Megohmmeter connection The winding being tested must be connected to the frame and grounded until all residual Whenever possible, each phase must be isolated and electrostatic charges are removed. -
Page 23: Conversion Of The Measured Values
The polarization index allows the assessment of the motor 4.4.7 Insulation assessment insulation conditions. Table 4.2 and Table 4.3 present guiding limits of insulation resistance and polarization index for the assessment of DANGER the motor insulation conditions. In order to avoid accidents, the winding must Table 4.2: Insulation resistance guiding limits on electrical... -
Page 24: Temperature Limits For The Windings
The motor protection devices are listed in the insulation, and hence that of the motor, will WEG drawing – Connection diagram. be significantly reduced, or it may even result Not using these devices is the sole in the motor burnout. -
Page 25: Temperature And Ohmic Resistance Of The Pt100 Thermoresistance
4.5.1.3 Temperature and ohmic resistance of the PT100 thermoresistance Table 4.6 shows the temperature as a function of the ohmic resistance measured across PT100 RTDs. Formula: Ω - 100 = °C 0.386 Table 4.6: Temperature X Resistance (Pt100) º C 100.00... -
Page 26: Independent Ventilation Cooling
4.7 ELECTRICAL ASPECTS In the case of radiators for applications with seawater, the materials in contact with the water (pipes and plates) must be corrosion 4.7.1 Electrical connections resistant. Furthermore, the radiators may be fitted with sacrificial anodes (e.g., zinc or ATTENTION magnesium), as shown in Figure 4.7, which... -
Page 27: Connection Diagrams
4.7.2 Connection diagrams 4.7.2.1 Connection diagrams according to IEC60034-8 The following connection diagrams show the terminal identification in the terminal box and the possible connections for the motors. 4.7.2.1.1 Stator connection diagrams 3 TERMINALS 6 TERMINALS 6 TERMINALS - DAHLANDER Δ... -
Page 28: Connection Diagrams According To Nema Mg1
Motors with a single rotation direction, as indicated on the nameplate and on sign plate affixed to the frame, have unidirectional fan and must be operated only in the specified rotation direction. In order to invert the rotation direction of unidirectional motors, consult WEG. 4.7.2.4 Accessory connection diagrams For the correct installation of the accessories, refer to the drawing in the specific CONNECTION DIAGRAM of the motor. -
Page 29: Mechanical Aspects
NOTES ATTENTION When WEG supplies the anchor plate for Improper mounting can generate excessive fastening and aligning the motor, the vibration, causing early wear of the bearings dimensional and installation details of the and even breaking the shaft. -
Page 30: Natural Frequency Of The Base
The anchor bolts must be fastened according to Table 4.8.7 Alignment The motor must be correctly aligned with the driven machine. Table 4.7: Tightening torque of the anchor bolts Dry tightening Tightening torque with Type Ø torque [Nm] Molycote [Nm]... -
Page 31: Hollow Shaft Motor Alignment
These shims can also compensate flanges that are not flat. Angular misalignment Axial measurement Figure 4.11: Angular alignment Figure 4.11 shows the angular misalignment and a practical form to measure it. The measurement is done in four points 90° away from Figure 4.12: Alignment of motors with hollow shaft... -
Page 32: Direct Coupling
(unless otherwise specified by Figure 4.15: Belt drive commercial agreement). WEG is not liable for damages to the motor, When a reduction or increase in speed is required, the associated equipment and installation belt transmission is the most indicated. -
Page 33: Starting
5 STARTING 5.1 DIRECT ON-LINE STARTING 5.2 DIRECT ONLINE STARTING FREQUENCY It is the simplest and most economically feasible method; however, it must only be used when the starting current Since induction motors have a high starting current, the does not affect the power grid. -
Page 34: Commissioning
In order to invert the rotation direction of bearing (if any) has been replaced, as per item 4.2.3; motors with single direction, it is necessary to consult WEG. 14. Keep the motor rotating at rated speed and write down the bearing temperatures at 1-minute intervals until they become constant. -
Page 35: Operation
In case of overheating, the motor must be shut down identify possible causes and make the necessary immediately for the inspection of bearings and corrections; temperature sensors, and the correction of possible 16. -
Page 36: Vibration
Alarm 3600 directions. When the customer sends the half coupling to Tripping WEG, the motor is balanced with the half coupling mounted on the shaft. Otherwise, according to the standards above, the motor is balanced with half-key ATTENTION (i.e., the key slot is filled with a bar of the same width,... -
Page 37: Maintenance
If any layer of resin on the windings is damaged during damage or defect observed. cleaning or inspection, such parts must be corrected with adequate material (in this case, consult WEG). l 37 11371757 Installation, operation and maintenance manual – Squirrel cage motor – M line – Vertical... -
Page 38: Insulation Resistance
7.3.5 Insulation Resistance 5. Reassemble the heads, replacing the gaskets, if necessary. The insulation resistance must be measured after the Sacrificial anodes completion of all of the maintenance procedures. Sacrificial anodes are used in radiators that operate with seawater. The regular inspection must be carried out, ATTENTION according to the maintenance plan. -
Page 39: Bearing Maintenance
Stop the motor and inject the rest of the grease. ATTENTION WEG does not recommend the use of ATTENTION greases different from the motor original grease. -
Page 40: Alternative Greases
7.9.1.5 Alternative greases Table 7.2: Options and characteristics of the alternative greases for regular applications Constant If it is not possible to use the original grease, the operating Multiplication alternative greases listed in Table 7.2 can be used, under... -
Page 41: Procedure For Changing The Grease
Figure 7.2: Lower bearing NOTE Figure 7.2 legend: 1. Temperature sensor WEG is not liable for the grease change or for 2. Grease nipple any damages arising from this change. 3. Grease collecting drawer 4. Screw 5. -
Page 42: Lower Bearing Disassembly
7.9.1.9.2 Lower bearing disassembly ATTENTION In order to disassemble the bearing, proceed according to During the bearing disassembly, it is the following guidelines: necessary to be careful not to damage the 1. Place the motor in the horizontal position;... -
Page 43: Lubrication Instructions
Proceed according to the following directions: The oil selected for the application must have the proper viscosity for the bearing operating temperature. The type of oil recommended by WEG already considers these criteria; Insufficient quantity of oil may damage the bearing;... -
Page 44: Bearing Disassembly
7.9.2.5 Bearing disassembly Figure 7.7: Lower bearing Figure 7.7 legend: Figure 7.6: Upper bearing Oil tank Oil flinger Oil guide Figure 7.6 legend: Bearing hub Oil tank Rolling bearing Bearing hub Socket screw Oil flinger Oil injector nozzle Oil drip pan... -
Page 45: Bearing Assembly
7.9.2.6 Bearing assembly NOTE Clean the rolling bearing and the oil tanks thoroughly, Under no circumstances can water leak into and inspect all the parts before the bearing assembly. the oil tank, because this will contaminate Make sure the rolling bearing contact surfaces are the lubricant. -
Page 46: Sealing
If the supplied bearings are manufactured by compromise its integrity, checking for cracks and broken WEG, refer to the specific bearing manual parts. Cracked or broken parts must be replaced. supplied with the motor, containing the... -
Page 47: Guide Bearing (Lower)
7.9.4.8.2 Guide bearing (lower) 7.9.5.2 Disassembly/assembly of the sleeve bearing temperature sensors The lower guide bearing function is to provide the radial location of the motor shaft without load or axial displacement limitation. Figure 7.11: Pt100 on the bearings Figure 7.11 legend:... -
Page 48: Motor Disassembly And Assembly
All the repair, disassembly and assembly services must be performed only by properly qualified and trained professionals; otherwise, equipment damage and personal injury may occur. If any further explanations are necessary, consult WEG. The disassembly and assembly sequence s depend on the motor model. -
Page 49: Tightening Torque
8.5 TIGHTENING TORQUE The Table 8.1 and Table 8.2 shows the tightening torques of the screws recommended for assembling the motor. Table 8.1: Screw tightening torque for metal/metal parts Material / Carbon Steel / Stainless steel / Resistance 8.8 or above A2 –... -
Page 50: Spare Parts
8.6 SPARE PARTS Table 8.3 shows the necessary spare parts, which must be kept in stock for the maintenance procedures recommended in the maintenance plan, and the optional spare parts, which can be requested to meet any replacement needs. -
Page 51: Maintenance Plan
9 MAINTENANCE PLAN The maintenance plan described in Table 9.1 is only referential, and the intervals between each maintenance intervention may vary according to the motor location and operating conditions. For the associated equipment, such as the water supply unit or control and protection system, it is necessary to refer to their specific manuals. -
Page 52: Abnormalities, Causes And Solutions
10 ABNORMALITIES, CAUSES AND SOLUTIONS NOTE The instructions of Table 10.1 present only a basic list of abnormalities, causes and corrective actions. In case of questions, consult WEG. Table 10.1: Basic list of abnormalities, causes and corrective actions ABNORMALITY POSSIBLE CAUSES... - Page 53 ABNORMALITY POSSIBLE CAUSES CORRECTION Fans with inverted rotation direction Correct the rotation direction of the fans Insufficient cooling due to dirty air channels Open and clean the air passage channels Measure the stator current; reduce the load. Overload Analyze the motor application...
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Page 54: Declaration Of Conformity
11 DECLARATION OF CONFORMITY 54 l Installation, operation and maintenance manual – Squirrel cage motor – M line – Vertical 11371757... -
Page 55: Environmental Information
These materials are recyclable or reusable and must be properly disposed according to the current regulations of each country. All the wood used in the packaging of WEG motors comes from reforestation and receives anti-fungal treatment. 12.2 PRODUCT... - Page 56 The repair and/or replacement of parts or components, when effected by WEG within the Warranty period do not give Warranty extension, unless otherwise expressed in writing by WEG. This constitutes WEG's only warranty in connection with this sale and is in lieu of all other warranties, expressed or implied, written or oral.
- Page 57 NOTES l 57 11371757 Installation, operation and maintenance manual – Squirrel cage motor – M line – Vertical...
- Page 58 58 l Installation, operation and maintenance manual – Squirrel cage motor – M line – Vertical 11371757...
- Page 59 WEG NETHERLANDS * WEG INDUSTRIAS VENEZUELA C.A. FRANCE WEG FRANCE SAS * Sales Office of WEG Benelux S.A. Hanzepoort Centro corporativo La Viña Plaza, ZI de Chenes - Le Loup13 / 38297 Saint 23C, 7575 DB Oldenzaal Cruce de la Avenida Carabobo con la calle Phone: +31 541 571090 Uzlar de la Urbanización La Viña / Jurisdicción...