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Siemens 880 Installation Operation & Maintenance

Induction motors / generators horizontal - medallion 500, 580, 708, 880 frames tefc & explosion-proof enclosures.
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Induction Motors/
Generators
Horizontal – Medallion
500, 580, 708, 788, 880 Frames
TEFC & Explosion-Proof Enclosures
Type CZ, NCZ, CGZ, CGZZ
ANIM-03522-0402
(New Issue)
©2002 Siemens Energy & Automation, Inc. All rights reserved.
Installation
Operation
Maintenance

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   Summary of Contents for Siemens 880

  • Page 1 Induction Motors/ Generators Horizontal – Medallion 500, 580, 708, 788, 880 Frames TEFC & Explosion-Proof Enclosures Type CZ, NCZ, CGZ, CGZZ ANIM-03522-0402 (New Issue) ©2002 Siemens Energy & Automation, Inc. All rights reserved.  Installation Operation Maintenance...
  • Page 2: Table Of Contents

    The sales contract contains the entire obligation of Siemens. The warranty contained in the contract between the parties is the sole warranty of Siemens. Any statements contained herein do not create new warranties or modify the existing warranty.
  • Page 3: Safety Procedures

    Safety Procedures This equipment contains hazardous voltages. Death, serious personal injury or property damage can result if safety instructions are not followed. The successful and safe operation of motors and generators is dependent upon proper handling, installation, operation and maintenance, as well as upon proper design and manufacture.
  • Page 4: Introduction

    These instructions present general recommendations installation, operation induction motors built at the Norwood plant. additional information is required, contact Siemens Energy & Automation. Warranty See your sales contract for warranty coverage. Documentation of storage maintenance, alignment and regreasing may be required for certain warranty considerations.
  • Page 5: Handling

    Storage requirements vary, depending on the length of The weight is storage and the climate. For storage periods of three Apply tension months or longer or climate variations, consult Siemens Storage Recommendations ANIM-03114. Storage maintenance is to be documented for warranty information.
  • Page 6: Installation

    Installation Motor Dimensions For motors built in the frame sizes covered by this manual, the letter dimensions have the same definitions established Established dimensions for these frames may be found on catalog sheets or certified drawings. CAUTION Damp Location. Can cause property damage if equipment is operated intermittently.
  • Page 7: External Wiring

    Installation External Wiring DANGER Hazardous voltage. Will cause death, serious injury, electrocution or property damage. Disconnect all power before working on this equipment. NOTE Before running motor, see Initial Start. Starting and overload control devices must be matched to motor rating. For safety or convenience they may need to be installed some distance from the motor.
  • Page 8: Hot Alignment

    Installation Angular Alignment Hold each shaft at maximum end float. Rotate both shafts together, and measure between matching points at the outside diameter of the coupling faces for the top, bottom and both sides. because of possible axial shaft movement. difference of variation between them.
  • Page 9: Vibration

    Installation Check for vertical alignment (parallelism) of coupled drive as follows: 1. Operate unit until normal temperature is reached (may require several hours). 2. Shut down motor and lock out switch. 3. Mount dial indicator as in Figure 2. 4. Rotate shaft, noting readings at 0°, 90°, 180°, and 270°...
  • Page 10: Typical Motor Control Settings

    Installation Typical Motor Control Settings Winding Temperature • Class B Insulation • Class F Insulation Motor Bearing Temperature (Thermocouple or RTD’s) • Sleeve Bearing • Antifriction Bearing Ground Fault Instantaneous Overcurrent • With ½ Cycle Delay • Without Time Delay Maximum Voltage Minimum Voltage (the minimum voltage...
  • Page 11: Operation

    Operation Initial Start CAUTION Do not exceed number of Siemens specified hot and cold starts per hour. Will cause overheating. Allow time between starts to permit stator windings and rotor cage to cool. NOTE If motor has been out of service or in storage for more...
  • Page 12: Trouble Shooting

    Operation Trouble Shooting Between regular maintenance inspections, be alert for signs of motor trouble. symptoms are listed in the following table. Correct any trouble immediately and AVOID COSTLY REPAIR AND SHUT DOWN. TROUBLE Motor will not start. Usually line trouble. Single phasing at starter.
  • Page 13 Operation Trouble Shooting TROUBLE Motor overheating Open stator windings. (continued…) Air Recirculation. Over voltage/under voltage. Ground. Improper electrical connections. Heat exchanger tubes blocked. Loose heat exchanger tubes. Fine dust under coupling Misalignment. having rubber buffers or pins. Bearing overheating. Oil level too high or low (sleeve bearing). Misalignment.
  • Page 14: Maintenance

    Siemens Sales Office. Improper maintenance can cause death, serious injury or property damage. Use only factory authorized parts for repair of equipment.
  • Page 15: Inspection

    The split-bearing capsule is held together by bolts. Sleeve Bearing - 580, 708, 788, 880 Frames Access to the motor interior can be gained by removal of the bearing bracket as follows: 1.
  • Page 16: Corrective Maintenance

    Maintenance Temperature Electrical apparatus operating conditions becomes quite warm. places may feel hot to the touch, the unit may be within limits. If checking total temperature by winding resistance or imbedded detector (RTD), the total temperature should not exceed the following: When operating at full load: Class of Insulation System Temp.
  • Page 17: Rotor Cleaning

    Water and detergents with an oven drying cycle may be used as an alternate on MICLAD™ VPI insulation systems. MICLAD™ is a Siemens trademark. DANGER Hazardous voltage. Will cause death, serious injury, electrocution or property damage.
  • Page 18: Bearings

    Maintenance Electric Strip Heater Drying 1. Remove bearing housings. 2. Remove rotor. 3. Direct a fan on stator to carry away the moisture. 4. Attach temperature indicators to winding and apply heat as specified in the Insulation Drying Temperature table described for drying insulation.
  • Page 19 Maintenance Insulated Bearings One or both bearings may be insulated to prevent shaft currents from pitting bearing surfaces. The insulation is located at the joint between the bearing housing or bracket and the bearing. Insulated bearings are designated by an instruction plate on the bearing housing.
  • Page 20 580 frame motors use fixed, labyrinth oil seals to close off the bearing cavity. The 500, 708, 788, and 880 frame motors utilize floating type oil seals to close off the bearing cavity. The primary purposes of the oil seal are: 1.
  • Page 21: Bearing Lubrication

    Remove all excess paint from parting line surfaces and degrease thoroughly. Do not grind mating surfaces. 3a. For 500, 708, 788, and 880 frames, apply a small bead of silicone RTV at the bearing housing parting surfaces. Loctite 518 may be used in replace of RTV in environments where silicon is prohibited.
  • Page 22: Bearing Replacement

    1.7 to 2.7 mils per inch of bearing diameter. Diametrical sleeve bearing clearances for the 708, 788, and 880 frames are in the range of 1.0 to 2.0 mils per inch of bearing diameter. An accurate check of bearing clearance is obtained with micrometer measurements of the shaft journal and bearing bore.
  • Page 23 If puller will not hook the bearing inner race, fabricate a split bushing and install it between Figure 5. Removing Bearing with a Puller - 22 - Figure 4. Ball Bearing Construction 788 and 880 Frames For best results, seal should be positioned flush with outer-most bearing surface.
  • Page 24 Maintenance Sleeve Bearing When replacing sleeve bearings, it is always desirable to check the fit (contact pattern) of the bearing to the shaft. When ordering sleeve bearings, be sure to provide complete motor nameplate and bearing data. Whenever a bearing is replaced, cleanliness must be observed through every step of the operation.
  • Page 25: Spare Parts

    On the 708, 788, and 880 frames the shims are located between the bearing housing mounting flange and the bearing bracket. The...
  • Page 26: Spare Parts

    Identification All units have an identification nameplate affixed to the frame (Figure 9). All the necessary information pertaining to the motor can be found on this plate including; 1. Serial Number 2. Type and Frame Size 3. Horsepower and Speed 4.
  • Page 27 Item Description Item Stator Core Stator Yoke Stator Coils Bearing Housing Rotor Shaft Inner End Cap Figure 11. Type CGZZ, 507, 509, and 5011 Frames. Figure 10. Type CZ, 509 & 5011 Frames Description Ball Bearing Shaft Seal Grid Cover Rotor Core External Fan (4 pole &...
  • Page 28 Spare Parts Figure 12. External Fan Arrangement for 2 Pole Types CZ, CGZ, & CGZZ. Item Description Stator Core Stator Yoke Stator Coils Bearing Housing Rotor Shaft Inner End Cap Ball Bearing Item Description Fan Cone External Fan (2pole) Inside Oil Seal Bearing Cap.
  • Page 29 Stator Core Stator Yoke Stator Coils Bearing Housing Rotor Shaft Inner End Cap Ball Bearing Shaft seal Figure. 17. Type CGZ, 788, & 880 Frames - 28 - Description Shaft seal Grid Cover Rotor Core External Fan (Non-Directional) Fan Housing...
  • Page 30: Motor Service Record

    _____________ Amperes Item No _____ BEARINGS Ball Roller Size: Drive End (DE) _____________________ Opposite Drive End (ODE) ____________ Lubrication ___________________________ Location Siemens No. Date Repl. INSPECTION - 29 - ______________ Type _____________ Hertz Frame Size ____________ Date Of Manufacture SHAFT EXTENSION...
  • Page 31: Vibration Analysis Sheet

    Vibration Analysis Sheet Pick-Up Filter-Out Coupled Disp. Freq* Point Position Mils Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical...
  • Page 32 Notes __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ - 31 -...
  • Page 33: Notes

    Notes __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ - 32 -...
  • Page 34 ANIM-03522-0402 (New Issue) ©2002 Siemens Energy & Automation, Inc. All rights reserved. Siemens Energy & Automation Industrial Products Division Norwood Motor Plant 4620 Forest Avenue Norwood, OH 45212-3396 (513) 841-3100...

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