Siemens 880 Installation Operation & Maintenance

Text of Siemens 880 User Guide:

• Siemens 880, - 20 - Maintenance Sealing Parts Even though joints may seem to match perfectly, minute clearances exist through which oil may leak. Sealant should be applied to the mating surfaces of parts where oil is present to prevent seepage of oil. Sealant should be applied as follows: 1. Surfaces shall be clean of dirt, grease, and oil sealant. Use a non-oil base solvent if necessary. 2. The mating surfaces should be flat with no nicks or burrs raised above the surface. There should be no gap when mating surfaces are together. Remove all excess paint from parting line surfaces and degrease thoroughly. Do not grind mating surfaces. 3a. For 500, 708, 788, and 8

• Siemens 880, - 3 - Introduction DANGER Hazardous voltage. Will cause death, serious injury, electrocution or property damage. Disconnect all power before working on this equipment. These instructions present general recommendations for installation, operation and maintenance of induction motors built at the Norwood plant. If 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 conside

• Siemens 880, - 15 - Maintenance Temperature Electrical apparatus operating under normal conditions becomes quite warm. Although some 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 B F H Temp. by Resistance All HP 120°C (248°F) 145°C (293°F) 165°C (329°F) 1500HP or less 130°C (266°F) 155°C (311°F) 180°C (356°F) Over 1500HP -Under 7000V 125�

• Siemens 880, - 25 - 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. Bearing Designations It is important when ordering spare parts or discussing service to have as much data from this plate as possible. Parts Identification Figures 10 through 18, are of a standard design. Your motor may differ slightly. A rec

• Siemens 880, - 31 - Notes __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ __________________________________________________________________________________________ _______________________________________________________________

• Siemens 880, - 7 - 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. Use two indicators because of possible axial shaft movement. Read difference of variation between them. Align shafts so that the total indicator variation does not exceed 0.002 inch. (See Figure 1.) Figure 1. Diagrams Showing Parallel and Angular Misalignment Foot Plane The proper foot plane exists when adequate shims have been installed to assure equal pressure on each foot or corner of motor when th

• Siemens 880, - 17 - 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 and follow procedures described for drying insulation. 5. Radiant type heaters are not recommended because some parts may become scorched before remote parts reach desired temperature. Circulating Current Drying 1. Remove bearing housings. 2. Center the ro

• Siemens 880, - 14 - Maintenance WARNING Explosion or fire. Can cause death, serious injury or property damage. Do not modify explosion-proof or dust ignition-proof motors. These motors are constructed to comply with the U.L. Label Service Procedure Manual. When reassembling a motor that has a U.L. Label, it is imperative that: 1. The original fits and tolerances be maintained. 2. All plugs and hardware be securely fastened. 3. Any part replacements are accurate duplicates of the original. 4. Reassembled motor must be inspected under U.L. Follow-Up Service Program; r

• Siemens 880, - 2 - 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. Failure to follow certain fundamental installation and maintenance requirements may lead to personal injury and the failure and loss of the motor as well as d

• Siemens 880, - 6 - 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. Follow the control manufacturer’s instructions to make proper installations and connections. Observe the following: 1. Connect electrical power supply to conform with National Electric Code and any local regulations

• Siemens 880, - 11 - Operation Trouble Shooting Between regular maintenance inspections, be alert for signs of motor trouble. Common symptoms are listed in the following table. Correct any trouble immediately and AVOID COSTLY REPAIR AND SHUT DOWN. TROUBLE POSSIBLE CAUSES CORRECTION Usually line trouble. Single phasing at starter. Check power source. DO NOT check with motor energized! Check overloads, controls and fuses. Check voltage and compare with nameplate rating. Under Voltage. Check voltage at motor terminals. Compare to nameplate. Motor will not start. Excessive Load. Disconnect motor from load to see if it starts without lo

• - 23 - 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. Al

• Siemens 880, - 12 - Operation Trouble Shooting TROUBLE POSSIBLE CAUSES CORRECTION Open stator windings. Disconnect motor from load. Check idle amps for balance in all three phases. Check stator resistance in all three phases for balance. Air Recirculation. Check air intake and exhaust for obstructions. Check air inlet temperature. Over voltage/under voltage. Check voltage and compare to rating plate. Ground. Locate with test lamp or insulation tester and repair. Improper electrical connec

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

• Siemens 880, - 18 - 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. Check periodically to be sure the insulation has not been weakened or destroyed. The bearing insulation can be checked using an ohmmeter or circuit test light. For sleeve bearing mo

• Siemens 880, - 19 - Maintenance At the first sign of oil discoloration or contamination, replace with new oil. Rapid discoloration is caused by bearing wear, often from vibration or thrust. Change oil as required to keep clean. When assembling the bearing, it is possible to foul the rings so that they will not turn freely. Check ring operation by rotating shaft by hand after assembly Oil Seals 580 frame motors use fixed, labyrinth oil seals to close off the bearing cavity. The 500, 708, 788, and 880 frame motors

• Siemens 880, - 26 - Figure 10. Type CZ, 509 & 5011 Frames Item Description Item Description Item Description 1 Stator Core 7 Ball Bearing 14 Inboard Seal 2 Stator Yoke 8 Shaft Seal 15 Oil Seal 3 Stator Coils 10 Grid Cover 16 Bearing Capsule 4 Bearing Housing 11 Rotor Core 17 Sleeve Bearing Bushing 5 Rotor Shaft 12 External Fan (4 pole & slower) 18 Shims (in bottom half) 6 Inner End Cap 13 Fan Housing 19 Oil Rings Item Description 1 Stator Core 2 Stator Yoke 3 Stator Coils 4 Bearing Housing 5 Rotor Shaft 6 Inner End Cap 7 Ball Bearing 8 Shaft Seal 9 Main Terminal Box 10 Grid Cover 11 Rotor Core

• Siemens 880, - 24 - 708, 788, and 880 Frames (See Figure 8) 1. Check replacement bearings for nicks or shipping damage. Do not scrape. 2. Carefully remove the bearing housing cap by first lifting straight up, then pulling away from the bearing area. 3. Remove top half of bearing liner. 4. Remove the bolts at the split line of the oil ring. 5. Remove bearing temperature probes if so equipped. 6. Raise the shaft slightly and support it. 7. Rotate the lower bearing half 180° and remove the lower half of the bea

• Siemens 880, - 8 - 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° (both sides, top, and bottom). If within 0.002 inch total indicator reading, or other limit specified by the factory, unit is satisfactory for operation. 5. If not within limits, add or remove shims as required to raise or lower motor. 6. If shims are changed for high temperature operation, repeat alignment procedure to extent necessary to assure

• Siemens 880, - 4 - Introduction WARNING Heavy equipment. Improper handling may cause death, serious injury or property damage. Check lifting devices before lifting. Use proper slings, chains and spreaders. Note any warning plates on motor and follow instructions on each plate. Handling Lifting devices are provided for handling only. An experienced rigger should be used to install motors. To avoid damage, the use of spreader bars is recommended on other than single point lifts. Lifting devices are provided to facilitate handling with shackles and cables. Avoid pounding or bumping shaft, coupling or bearing parts, as shocks may damage bearings. NOT

• Siemens 880, 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

• Siemens 880, - 5 - Installation Motor Dimensions For motors built in the frame sizes covered by this manual, the letter dimensions have the same definitions as established NEMA standards. 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. Use space heaters to prevent dampness. Grease machine fits when unit is reassembled to prevent corrosion. Location Select a location for the motor and driven unit that will: 1. Be clean, dry, well ventilated, properly drained, and provide accessibility for inspection,

• - 22 - Maintenance To Replace Antifriction Bearings 1. Remove bolts holding end caps to housings. 2. Remove bolts holding bearing housings to yoke. 3. Remove bearing housings. 4. Remove the bearing with a puller. See Figure 5. 5. Check shaft and housing diameter for proper size with micrometer. 6. Heat the new bearing in an oven (200°F). While it is

• Siemens 880, - 30 - Vibration Analysis Sheet Pick-Up Filter-Out Coupled Filter-In Coupled Disp. Freq* Vel. Freq.* Vel. Freq. Vel. Freq. Vel. Freq. Vel. Freq. Point Position Mils CPM In/Sec CPM Mils CPM Mils CPM Mils CPM Mils CPM Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial Horizontal Vertical Axial

• - 28 - Spare Parts Figure 15. Sleeve Bearing Arrangement for Type CGZ 708, 788, & 880 Frames Item Description 18 Oil Seal 19 Bearing Cap. Housing 20 Sleeve Bearing Bushing 21 Shims 22 Machine Seal 23 Oil Ring Item Description Item Description 1 Stator Core 8 Shaft seal 2 Stator Yoke 10 Grid Cover 3 Stator Coils 11 Rotor C

• Siemens 880, - 1 - Table of Contents Page Page TABLE OF CONTENTS 1 OPERATION 10 SAFETY PROCEDURES 2 Initial Start 10 INTRODUCTION 3 Oil Circulating Systems 10 Warranty 3 Normal Operation 10 Receiving 3 Voltage/Frequency Variation 10 Handling 4 Trouble Shooting 11 Temporary Storage 4 MAINTENANCE 13 Type Designations 4 Preventive Maintenance 13 INSTALLATION 5 Inspection 14 Motor Dimensions 5 Corrective Maintenance 15 Location 5 Rotor Cleaning 16 Foundation 5 Stator Cleaning 16 Mounting 5 Insulation Resistance 16

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