Integral Horsepower AC Induction Motors ODP, WPI Enclosures TENV, TEAO, TEFC Enclosure Explosion Proof 10/14 Installation & Operating Manual MN408
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Table of Contents Section 1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety Notice . . . . . . . . . .
ii MN408
Section 1 General Information Overview This manual contains general procedures that apply to Baldor Motor products. Be sure to read and understand the Safety Notice statements in this manual. For your protection, do not install, operate or attempt to perform maintenance procedures until you understand the Warning and Caution statements. A Warning statement indicates a possible unsafe condition that can cause harm to personnel. A Caution statement indicates a condition that can cause damage to equipment.
Safety Notice Continued WARNING: Do not use non UL/CSA listed explosion proof motors in the presence of flammable or combustible vapors or dust. These motors are not designed for atmospheric conditions that require explosion proof operation. WARNING: Motors that are to be used in flammable and/or explosive atmospheres must display the UL label on the nameplate along with CSA listed logo. Specific service conditions for these motors are defined in NFPA 70 (NEC) Article 500.
Storage Storage requirements for motors and generators that will not be placed in service for at least six months from date of shipment. Improper motor storage will result in seriously reduced reliability and failure. An electric motor that does not experience regular usage while being exposed to normally humid atmospheric conditions is likely to develop rust in the bearings or rust particles from surrounding surfaces may contaminate the bearings.
6. All breather drains are to be fully operable while in storage (drain plugs removed). The motors must be stored so that the drain is at the lowest point. All breathers and automatic “T” drains must be operable to allow breathing and draining at points other than through the bearings around the shaft. Vertical motors should be stored in a safe stable vertical position. 7. Coat all external machined surfaces with a rust preventing material. An acceptable product for this purpose is Exxon Rust Ban # 392.
Equipment Marking for IEC Certified Product IEC certified products have special markings that identify the protection concept and environment requirements. An example is shown in Figure 1-1. Figure 1-1 IEC Certified Product Markings Temperature Class Gas Group (IIC) Ex Protection Concept (ExnA) Ambient Range ExnA MOTOR ExnA IIC ATEX Specific Marking of Explosion Protection Gc Tamb ºC to ºC II 3 G IP______ Sira__________________ IECEx__________________ MFG.
Figure 1-2 Typical Speed vs Torque Curves Load Types 120 CT Percent Torque 100 80 CHP 60 40 VT 20 0 0 20 40 60 80 100 120 140 160 180 200 Percent Speed EMC Compliance Statement for European Union The motors described in this instruction manual are designed to comply 2004/108/EC . These motors are commercial in design and not intended for residential use.
Section 2 Installation & Operation Overview Installation should conform to the National Electrical Code as well as local codes and practices. When other devices are coupled to the motor shaft, be sure to install protective devices to prevent future accidents. Some protective devices include, coupling, belt guard, chain guard, shaft covers etc. These protect against accidental contact with moving parts.
Frame Mounting Holes Some motors have standardized frames containing 6 or 8 mounting holes. 6 hole frames are not suitable for field reversal of mounting from F−1 to F−2, etc. Figure 2-1 indicates the proper mounting holes to use. For short frame designations 182, 213, 254, 284, 324, 364, 404, 444 (NEMA) Figure 2-1 6 & 8 Hole Motor Frame Mounting Top View Allows F-1 to F-2 Conversion on 8 hole frames. Not present on 6 hole frames. Not used on 8 hole frames.
Use a flat washer and lock washer under each nut or bolt head to hold the motor feet secure. Flanged nuts or bolts may be used as an alternative to washers. WARNING: Guarding Guards must be installed for rotating parts such as couplings, pulleys, external fans, and unused shaft extensions, should be permanently guarded to prevent accidental contact by personnel. Accidental contact with body parts or clothing can cause serious or fatal injury.
AC Power Motors with flying lead construction must be properly terminated and insulated. Connect the motor leads as shown on the connection diagram located on the name plate or inside the cover on the conduit box. Be sure the following guidelines are met: 1. AC power is within +10% of rated voltage with rated frequency. (See motor name plate for ratings). OR 2. AC power is within +5% of rated frequency with rated voltage. OR 3.
Connection Diagrams MN428 Installation & Operation 2-5
Connection Diagrams Continued 2-6 Installation & Operation MN428
Figure 2-3 Typical Motor Performance VS Voltage Variations +20 +15 Changes in Motor Performance (%) Maximum Torque Full -Load Current +10 Full -Load Current Power Factor +5 0 Efficiency −5 Efficiency −10 −15 −20 Power Factor Maximum Torque −15 −10 −5 0 +5 +10 +15 Voltage Variations (%) Initial Lubrication Baldor•Reliance motors are shipped from the factory with the bearings properly packed with grease and ready to operate.
10. After 1 hour of operation, disconnect power and connect the load to the motor shaft. Verify all coupling guards and protective devices are installed. Ensure motor is properly ventilated. 11. If motor is totally enclosed fan−cooled or non−ventilated it is recommended that condensation drain plugs, if present, be removed. These are located in the lower portion of the end−shields. Totally enclosed fan− cooled “XT” motors are normally equipped with automatic drains which may be left in place as received.
If thermostats are provided as a condition of certification, it is the installer’s responsibility to make sure that these devices are properly connected to a suitable switching device. The ATEX directive requires that motor shutdown on thermal trip be accomplished without an intermediate software command.
1. Motor load exceeding service factor nameplate value 2. Ambient temperatures above nameplate value 3. Voltages above or below nameplate value 4. Unbalanced voltages 5. Loss of proper ventilation 6. Altitude above 3300 feet / 1000 meters 7. Severe duty cycles of repeated starts 8. Motor stall 9. Motor reversing 10. Single phase operation of polyphase equipment 11.
Repair of Motors used in Hazardous Locations Repair of hazardous certified motors requires additional information, skill, and care. It is the customer’s responsibility to select service shops with proper qualifications to repair hazardous location motors. Contact the manufacture for additional repair details. Use only original manufacturer’s parts.
2-12 Installation & Operation MN428
Section 3 Maintenance & Troubleshooting WARNING: UL and EX Listed motors must only be serviced by UL or EX Approved Authorized Baldor Service Centers if these motors are to be returned to a hazardous and/or explosive atmosphere. General Inspection Inspect the motor at regular intervals, approximately every 500 hours of operation or every 3 months, whichever occurs first. Keep the motor clean and the ventilation openings clear.
Relubrication Intervals Recommended relubrication intervals are shown in Table 3-1. It is important to realize that the recommended intervals of Table 3-2 are based on average use. Refer to additional information contained in Tables 3-2, 3-3 and 3-4. Table 3-1 Relubrication Intervals * Rated Speed - RPM NEMA / (IEC) Frame Size 10000 6000 3600 1800 1200 900 Up to 210 incl. (132) ** 2700 Hrs. 5500 Hrs. 12000 Hrs. 18000 Hrs. 22000 Hrs. Over 210 to 280 incl. (180) ** 3600 Hrs. 9500 Hrs.
Table 3-4 Bearings Sizes and Types Frame Size NEMA (IEC) Bearing Description (These are the “Large” bearings (Shaft End) in each frame size) Bearing Weight of Grease to add * oz (Grams) 56 to 140 (90) 6203 140 (90) 180 (100−112) Volume of grease to be added in3 teaspoon 0.08 (2.4) 0.15 0.5 6205 0.15 (3.9) 0.2 0.8 6206 0.19 (5.0) 0.3 1.0 210 (132) 6307 0.30 (8.4) 0.6 2.0 250 (160) 6309 0.47 (12.5) 0.7 2.5 280 (180) 6311 0.61 (17) 1.2 3.9 320 (200) 6312 0.76 (20.1) 1.2 4.
Without Grease Provisions Note: Only a Baldor authorized and UL or CSA certified service center can disassemble a UL/CSA listed explosion proof motor to maintain it’s UL/CSA listing. 1. Disassemble the motor. 2. Add recommended amount of grease to bearing and bearing cavity. (Bearing should be about 1/3 full of grease and outboard bearing cavity should be about 1/2 full of grease.) 3. Assemble the motor.
Table 3-6 Troubleshooting Chart Symptom Possible Causes Possible Solutions Motor will not start Usually caused by line trouble, such as, single phasing at the starter. Check source of power. Check overloads, fuses, controls, etc. Excessive humming High Voltage. Eccentric air gap. Check input line connections. Have motor serviced at local Baldor service center. Overload. Compare actual amps (measured) with nameplate rating. Locate and remove source of excessive friction in motor or load.
Suggested bearing and winding RTD setting guidelines for Non−Hazardous Locations ONLY Most large frame AC Baldor motors with a 1.15 service factor are designed to operate below a Class B (80 ºC) temperature rise at rated load and are built with a Class H winding insulation system. Based on this low temperature rise, RTD (Resistance Temperature Detectors) settings for Class B rise should be used as a starting point. Some motors with 1.0 service factor have Class F temperature rise.
Baldor Electric Company P.O. Box 2400, Fort Smith, AR 72902-2400 U.S.A., Ph: (1) 479.646.4711, Fax (1) 479.648.5792, International Fax (1) 479.648.5895 www.baldor.com © Baldor Electric Company MN408 All Rights Reserved. Printed in USA.
