GEI-M1031-B GE Energy Motor Installation and Maintenance Instructions Horizontal AC Small Industrial Motors NEMA 143-326 Frame Totally Enclosed Fan Cooled Severe Duty, Energy Saver Models – 5KSxxxSTExxx 2012/08/24
GEI-M1031-B Table of Contents Subject I. II. III. IV. V. VI. VII. VIII. IX. Page General Information……………………………………………………………………………………………………………………………………………………………………3 A. How to Properly use this Instruction Manual………………………………………………………………………………………………………………..3 B. Safety Symbol Legend…………………………………………………………………………………………………………………………………………………………3 C. Safe Motor Operation………………………………………………………………………………………………………………………………………………………….4 Receiving, Storage, Handling and Unpacking .......................................
GEI-M1031-B I. GENERAL INFORMATION A. How to Properly use this Instruction Manual This manual has been written to assist the user with proper procedures when handling, installing, operating and maintaining the equipment. All of the safety warnings and instructions in this book must be followed to prevent injury to personnel. The installation and maintenance manual must be kept for future reference during installation, operation and maintenance. B.
GEI-M1031-B I. GENERAL INFORMATION (cont’d) C. Safe Motor Operation WARNINGS: High voltage and rotating parts can cause serious or fatal injuries. Qualified personnel should perform installation, operation and maintenance of electrical machinery. For equipment covered by this instruction book, it is important to observe safety precautions to protect personnel from possible injury. Be sure to keep the installation and maintenance information for future reference. All warnings and cautions must be followed.
GEI-M1031-B II. RECEIVING, STORAGE, HANDLING AND UNPACKING A. Receiving Each shipment should be carefully inspected upon arrival. Any damage should be reported promptly to the carrier and a claim filed. The nearest GE sales office can provide additional guidance. B. Storage If the machine will not be put into service immediately, certain precautions should be taken to protect the machine while in storage. It is recommended that the machine be placed under cover in a clean, dry location.
GEI-M1031-B II. RECEIVING, STORAGE, HANDLING AND UNPACKING (cont’d) C. Handling (cont’d) D. Unpacking If the machine or machine parts have been exposed to low temperatures, unpack it only after it has reached the temperature of the room in which it will be unpacked or located condensation will occur. E. Description of Labels and Nameplates Motor rating and identification data are furnished on labels and nameplates. Labels provide basic motor characteristics.
GEI-M1031-B III. INSTALLATION Coupling, belt and chain guards should be installed as needed to protect against accidental contact with moving parts. Machines accessible to personnel should be further guarded by Warning screening, guard rails, etc., to prevent them from coming in contact with the equipment. Failure to observe these precautions may result in injury to personnel. A. Location 1. Standard enclosed motors are used where they are exposed to dirt, moisture, and most outdoor conditions. 2.
GEI-M1031-B III. INSTALLATION (cont’d) C. Alignment (cont’d) 1. Direct Coupling (cont’d) Table 2: Bolt Grade Designations 8.8 Grade 5 OR ISO 8.
GEI-M1031-B III. INSTALLATION (cont’d) C. Alignment (cont’d) Table 4 V-Belt Sheave Diameters (Minimum in Inches) Horsepower Synchronous Speed (RPM) 1800 1200 3600 1.5 2–3 — — 5 7.5 – 10.0 — 15 20 – 25 — — — — 1 1.5 – 2 3 — — 5 – 7.5 10 15 20 25 30 40 50 .75 1 1.5 2 — 3–5 7.5 10 15 20 25 30 - 40 900 Conventional* A, B, C, D, E Pitch Diameter Narrow 3V, 5V, 8V Outside Diameter .50 .75 1 1.5 — 2–3 5 7.5 10 — 15 20 25 - 30 2.2 2.4 2.4 2.4 2.6 3.0 3.8 4.4 4.6 5.0 5.4 6.0 6.8 2.2 2.4 2.4 2.4 2.4 3.
GEI-M1031-B III. INSTALLATION (cont’d) D. Power Supply and Connections (cont’d) 2. Allowable Voltage and Frequency The power supply must agree with the nameplate voltage and frequency. The motors will operate (but with characteristics somewhat different from nameplate values) on line voltages within 10% of nameplate value and frequency within 5%, and a combined variation not to exceed 10%. Motors identified as “usable at 200V” will not operate full loads on line voltages below 190V.
GEI-M1031-B IV. OPERATION (cont’d) B. Insulation Resistance (cont’d) 1. Dry the part in an air circulating oven with the air surrounding the part at 110C, (-15C/+5C) until the part has been above 90C for at least four hours. Then the air temperature may be raised to 150C, -15C/+5C. Continue to heat until the insulation resistance is constant for a one-half hour period. 2. Enclose the motor with a canvas or similar covering, leaving a hole at the top for moisture to escape.
GEI-M1031-B IV. OPERATION (cont’d) D. Initial Start 1. After inspecting the machine carefully, make the initial start by following the regular sequence of starting operations in the control instructions. 2. At initial start, the rate of rise of the bearing temperature is more indicative of trouble than total temperature. When starting a machine for the first time, the bearing temperature should be observed for a minimum of two hours.
GEI-M1031-B V. MAINTENANCE Before initiating maintenance procedures, disconnect all power sources to the machine and any accessories. For machines equipped with surge capacitors do not handle the capacitor until discharged by a conductor simultaneously touching all Warning terminals and leads, including ground. This discharge conductor should be insulated for handling. Replace all normal grounding connections prior to operating. Failure to observe these precautions may result in injury to personnel.
GEI-M1031-B V. MAINTENANCE (cont’d) B. Insulation and Windings (cont’d) 3. Cleaning with Water and Detergent This method is very effective in cleaning windings when used with a low-pressure steam jenny (maximum steam flow 30 psi and 90C). To minimize possible damage to varnish and insulation, a fairly neutral non-conducting detergent should be used. Caution If a steam jenny is not available, the cleaning solution may be applied with warm water by a spray gun.
GEI-M1031-B V. MAINTENANCE (cont’d) C. Lubrication and Bearings (cont’d) The primary function of grease is to supply the essential lubricating oil from the spongelike reservoir of its soap structure. Grease-lubricated anti-friction ball bearings consume only a small amount of lubricant. This lubricant must always be present to avoid rapid wear and bearing failure. However, excessive or too frequent lubrication may damage the motor. Ball bearing motors are adequately lubricated at the factory.
GEI-M1031-B V. MAINTENANCE (cont’d) C. Lubrication and Bearings (cont’d) 2.
GEI-M1031-B V. MAINTENANCE (cont’d) D. Anti-Friction Bearing Maintenance (cont’d) 2. Reassembly Warning To prevent injury to eyes, safety glasses should be used. Cleanliness is important when working with bearings. Before reassembling a bearing, all bearing and machined surfaces should be thoroughly cleaned with suitable solvent. Examine the machined fits of the end-shield, bearing housing, slinger, and grease cap for burrs. It is important that these surfaces be smooth.
GEI-M1031-B V. MAINTENANCE (cont’d) D. Anti-Friction Bearing Maintenance (cont’d) 2. Reassembly (cont’d) Table 7: Motor Endplay Ranges Shaft Endplay (Inches) Frame Size Minimum Maximum 140/180 0.020 0.045 210/250 0.031 0.057 280 0.039 0.065 320 None (Locked Bearings) VI. OPERATIONAL DIFFICULTIES Some operating difficulties may occur, and their causes are given in the following chart and should be corrected as soon as possible.
GEI-M1031-B VII. FAILURE An extreme overload or electrical failure may result in heating or arcing which can cause the insulation to give off noxious fumes. All power should be removed from the motor circuit as a Warning precaution even though the circuit has overload protection. Personnel should not approach the motor until adequate ventilation of the area has purged the air of fumes.
