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Summary of Contents for WEG WGM
- Page 1 Motors I 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 Maintenance Manual...
- Page 3 Installation, Operation and Maintenance Manual Document Number: 11239449 Model: WGM Language: English Revision: 8 February 2017...
- 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 ... - Page 8 4.6.1 Cooling system characteristics ......................25 4.6.2 Cooling water characteristics......................25 4.6.2.1 Cooling water temperature ....................25 4.6.3 Protection devices ..........................25 ELECTRICAL ASPECTS ......................... 26 4.7.1 Electrical connections.........................
- Page 9 ENCODER MAINTENANCE ......................38 7.10 BEARING MAINTENANCE ......................39 7.10.1 Grease-lubricated rolling bearings ....................... 39 7.10.1.1 Instructions for lubrication ....................39 7.10.1.2 Procedures for rolling bearing relubrication ................39 ...
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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: Vertical Motor Positioning
3.2.1 Vertical motor positioning 3.3 STORAGE Vertical motors are supplied with lifting lugs at the drive If the Motor is not installed immediately after reception, it end DE and non-drive end NDE. must remain inside the package and stored in a location... -
Page 16: Storage Location
If any of these requirements is not met in the storage site, Space heaters must remain powered during storage to WEG suggests that additional protections be added to the avoid moisture condensation inside the motor and ensure motor package during the storage period, as follows: ... -
Page 17: Insulation Resistance
WEG recommends that, every 3 years of storage, the must be rotated at least 10 complete turns stored motor be sent to a WEG Authorized Repair Shop or at 30 rpm to circulate the grease and to WEG own factory, in order to perform a complete preserve the internal parts of the bearings. -
Page 18: Maintenance Plan During Storage
3.3.3.9 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 2 years Notes months months start-up STORAGE LOCATION... -
Page 19: Preparation For Commissioning
3.3.4 Preparation for commissioning 3.3.4.1 Cleaning The internal and external parts of the motor must be free of oil, water, dust and dirt. Remove the rust inhibitor from the exposed surfaces with a cloth damped in a petroleum-based solvent;... -
Page 20: Installation
In order to operate the motor in the direction motor frame and the winding. opposite to the specified, consult WEG. The frame must be grounded and the three phases of the stator winding must remain connected to the neutral point, 4.4 INSULATION RESISTANCE... -
Page 21: Additional Information
4.4.6 Conversion of the measured values The insulation resistance must be measured at 40°C. If the measurement is performed at a different temperature, it is M necessary to correct the reading to 40°C by using a curve of the insulation resistance variation as a function of the temperature, obtained at the motor itself. -
Page 22: Insulation Assessment
4.4.7 Insulation assessment Thermistors (PTC or NTC) – Are thermal detectors composed of semiconductors that vary their resistance Table 4.2 and Table 4.3 present guiding limits of insulation sharply when they reach a certain temperature. resistance and polarization index for the assessment of Thermistors are connected in series or independently the motor insulation conditions. -
Page 23: Alarm And Trip Temperatures
Table 4.5. ATTENTION The motor protection devices are listed in the WEG drawing – Connection diagram. Not using these devices is the sole responsibility of the user and, in case of damage to the motor, it will void the warranty. -
Page 24: Temperature And Ohmic Resistance Of The Pt100 Thermoresistance
4.5.1.4 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: - 100 = C 0.386 Table 4.6: Temperature X Resistance (Pt100) º C 100.00... -
Page 25: Cooling
30 consecutive days; however, that can only be done twice during the motor useful life. After the operation with seawater, it is Figure 4.4: WGM motor cooling necessary to clean the cooling circuit with treated industrial water. Figure 4.4 legend: 1. -
Page 26: Electrical Aspects
4.7.1.2 Grounding 4.7 ELECTRICAL ASPECTS The motor frame and the main terminal box must be 4.7.1 Electrical connections grounded before connecting the motor to the supply system. ATTENTION Connect the metallic sheath of the cables (if any) to the common grounding conductor. -
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
4.8.3 Base types 4.8 MECHANICAL ASPECTS 4.8.3.1 Concrete base 4.8.1 Foundations Concrete bases are the most widely used for the The foundation or structure where the motor will be installation of these motors. installed must be sufficiently rigid, flat, free of external... -
Page 30: Metal Base
4.8.3.3 Metal base 4.8.5 Leveling The motor must rest evenly on the metal base in order to The motor must rest on a surface with flatness of up to prevent deformations of the frame. Occasional errors in 0.08 mm/m. -
Page 31: Doweling
WEG is not liable for damages to the motor, manufacturer. associated equipment and installation It is recommended to keep a safety margin for these occurred because of: values. -
Page 32: Direct Coupling
ATTENTION Consult WEG for the correct sizing of the pulley. NOTE Always use properly balanced pulleys. Avoid... -
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
6 COMMISSIONING When the motor is started for the first time or after a prolonged standstill, several aspects must be considered besides the regular operation procedures. ATTENTION Avoid any contact with electric circuits; Even low-voltage circuits may be life threatening;... -
Page 35: General
When the customer sends the half coupling to until the condition after reaching thermal stability, then it WEG, the motor is balanced with the half coupling is necessary to check the alignment and the leveling. mounted on the shaft. Otherwise, according to the ... -
Page 36: Operation As Asynchronous Generator
6.4 OPERATION AS ASYNCHRONOUS GENERATOR For operation as asynchronous generator, besides the procedures mentioned in section 6.3, it is necessary to consider the following particularities of this application: 6.4.1 Operation In order to operate as an asynchronous generator, the... -
Page 37: Maintenance
Use the device supplied with the of the "Maintenance Plan" of this manual. If reimpregnation motor to lock the shaft. is necessary, consult WEG. If the motor requires reconditioning or The windings may be cleaned with an industrial vacuum replacement of any damaged part, consult cleaner with a non-metallic crevice tool or just a dry cloth. -
Page 38: Reimpregnation
If any further explanations are necessary, consult WEG. Figure 7.2: Drain of vertical motors Installation, operation and maintenance manual – Squirrel cage motor – W Line - Horizontal and vertical... -
Page 39: Bearing Maintenance
ATTENTION The lubrication intervals informed on the nameplate consider a 70 °C working temperature of the rolling WEG does not recommend the use of bearing; greases different from the motor original Based on the operating temperature ranges listed in grease. -
Page 40: Alternative Greases
7.10.1.5 Alternative greases If it is not possible to use the original grease, alternative greases listed in Table 7.3 can be used, under the following conditions: 1. The motor speed must not exceed the limit speed of the grease, according to the type of rolling bearing, as informed in Table 7.3;... - Page 41 Table 7.3 shows the most common rolling bearings used in horizontal motors, the quantity of grease and the speed limit for using optional greases. Table 7.3: Application of alternative greases Limit speed of the grease [rpm] Horizontal motors Grease quantity...
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Page 42: Procedure For Changing The Grease
Never clean the rolling bearing with cotton- based cloths, because they may release some lint, working as solid particles. NOTE WEG is not liable for the grease change or for Figure 7.4: DE bearing any damages arising from this change. Figure 7.4 legend: 1. -
Page 43: Disassembly - Vertical Bearings
DE bearing disassembly 7.10.1.10 Disassembly – vertical bearings In order to disassemble the bearing, proceed according to the following guidelines: 1. Remove the screws (4), protection disc (5) and the labyrinth taconite seal (6); 2. Remove the screws (7) from the outer and inner bearing caps (8 and 13);... -
Page 44: Lower Bearing Disassembly
7.10.1.10.2 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 45: Bearing Protection
7.10.3 Bearing protection Assembly instructions: 7.10.3.1 Protection settings ATTENTION Before assembling the Pt100 on the ATTENTION bearing, check if it does not contain marks The following temperatures must be set on of knock or any other damage that may the bearing protection system: compromise its operation. -
Page 46: 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 sequences depend on the motor model. -
Page 47: Vertical Motors
8.2 VERTICAL MOTORS Figure 8.2: Vertical motor Figure 8.2 legend: 10. In order to disassemble the bearings, follow the 1. Flange procedures described in the section Bearing 2. Stator disassembly/assembly of this manual; 3. Rotor 11. Using a proper device, remove the rotor (3) from the 4. -
Page 48: Air-Gap Measurement
When ordering spare parts, inform the motor type and serial number, according to the motor nameplate. 8.4 TIGHTENING TORQUE WEG recommends keeping in stock the following spare parts: Table 8.1 and Table 8.2 shows the tightening torques of the screws recommended for assembling the motor. -
Page 49: 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 50: 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 CORRECTION ... - Page 51 ABNORMALITY POSSIBLE CAUSES CORRECTION Insufficient cooling due to dirty water Clean the water passage channels channels Measure the stator current. Reduce the Overload load. Analyze the motor application High number of starts or moment of inertia ...
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Page 52: Declaration Of Conformity
11 DECLARATION OF CONFORMITY Installation, operation and maintenance manual – Squirrel cage motor – W Line - Horizontal and vertical 11239449... -
Page 53: 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 54: Warranty Term
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 55 NETHERLANDS VENEZUELA FRANCE WEG NETHERLANDS * WEG INDUSTRIAS VENEZUELA C.A. Sales Office of WEG Benelux S.A. Hanzepoort Centro corporativo La Viña Plaza, WEG FRANCE SAS * 23C, 7575 DB Oldenzaal ZI de Chenes - Le Loup13 / 38297 Saint Cruce de la Avenida Carabobo con la calle...