Integral Horsepower AC Induction Motors ODP, WPI Enclosures TENV, TEAO, TEFC Enclosure Explosion Proof Installation & Operating Manual 8/12 MN408
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Table of Contents Section 1 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Section 1 General Information ii Table of Contents MN408
Section 1 General Information Overview Important: 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.
Section 1 General Information Safety Notice Continued WARNING: Use proper care and procedures that are safe during handling, lifting, installing, operating and maintaining operations. Improper methods may cause muscle strain or other harm. WARNING: Pacemaker danger − Magnetic and electromagnetic fields in the vicinity of current carrying carrying conductors and permanent magnet motors can result result in a serious health hazard to persons with cardiac pacemakers, metal implants, and hearing aids.
Storage 2. To avoid condensation inside the motor, do not unpack until the motor has reached room temperature. (Room temperature is the temperature of the room in which it will be installed). The packing provides insulation from temperature changes during transportation. 3. When lifting a WPII (Weather Proof Type 2) motor, do not lift the motor by inserting lifting lugs into holes on top of the cooling hood. These lugs are to be used for hood removal only.
5. Motors with anti−friction bearings are to be greased at the time of going into extended storage with periodic service as follows: a. Motors marked “Do Not Lubricate” on the nameplate do not need to be greased before or during storage. b. Ball and roller bearing (anti−friction) motor shafts are to be rotated manually every 3 months and greased every 6 months in accordance with the Maintenance section of this manual. c. Sleeve bearing (oil lube) motors are drained of oil prior to shipment.
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 3-1. Figure 3-1 IEC Certified Product Markings Temperature Class Gas Group (IIC) Ex Protection Concept (ExnA) Ambient Range ExnA MOTOR ATEX Specific Marking of Explosion Protection ExnA IIC Gc Tamb C to MFG.
1−6 General Information MN408
Section 2 Installation & Operation Overview Location Mounting 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 2-2 indicates the proper mounting holes to use. Figure 2-2 6 & 8 Hole Motor Frame Mounting For short frame designations 182, 213, 254, 284, 324, 364, 404, 444 (NEMA) 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.
Doweling & Bolting After proper alignment is verified, dowel pins should be inserted through the motor feet into the foundation. This will maintain the correct motor position should motor removal be required. (BaldorSReliance motors are designed for doweling.) 1. Drill dowel holes in diagonally opposite motor feet in the locations provided. 2. Drill corresponding holes in the foundation. 3. Ream all holes. 4. Install proper fitting dowels. 5.
Conduit Box For ease of making connections, an oversize conduit box is provided. Most conduit boxes can be rotated 360 in 90 increments. Auxiliary conduit boxes are provided on some motors for accessories such as space heaters, RTD’s etc. 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.
Caution: Note: Main power leads for CE Marked Motors may be marked U,V,W – for standard configurations, please consult connection diagrams. The space heaters are designed to operate at or below the maximum surface temperature stated on the nameplate. If the marked ambient and/or voltage are exceeded this maximum surface temperature can be exceeded and can damage the motor windings. If applied in a division 2 or zone 2 environment this excessive temperature may cause ignition of hazardous materials.
Connection Diagrams Continued 2−6 Installation & Operation MN408
+20 Changes in Motor Performance (%) +15 Figure 2-4 Typical Motor Performance VS Voltage Variations Maximum Torque Full -Load Current +10 +5 Full -Load Current Power Factor 0 −5 Efficiency Efficiency −10 −15 −20 Power Factor Maximum Torque −15 −10 −5 0 +5 +10 +15 Voltage Variations (%) Initial Lubrication BaldorSReliance motors are shipped from the factory with the bearings properly packed with grease and ready to operate.
This procedure assumes a coupled start up. Also, that the first time start up procedure was successful. Check the coupling and ensure that all guards and protective devices are installed. Check that the coupling is properly aligned and not binding. The first coupled start up should be with no load. Apply power and verify that the load is not transmitting excessive vibration back to the motor though the coupling or the foundation. Vibration should be at an acceptable level. 4.
Flameproof motors, internationally referred to as Ex d use a protection concept similar to that used in Class I Division 1 motors, with minor differences in the flameproof joints and cable entry designs. Flameproof and explosion proof motors are both type tested. Representative motors are connected to a reference gas and ignited in laboratory conditions to verify that the flame is not transmitted outside the motor enclosure and to determine the maximum internal pressure encountered.
If applied in a Division 1 or 2 / Zone 1 or 2 and Zone 21 or 22 environment, this excessive temperature may cause ignition of hazardous materials. Operating the motor at any of the following conditions can cause the marked surface temperature to be exceeded. 1. Motor load exceeding service factor nameplate value 2. Ambient temperature above nameplate value 3. Voltage (at each operating frequency) above or below rated nameplate value 4. Unbalanced voltages 5. Loss of proper ventilation 6.
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 3-2. 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 3-3, 3-4 and 3-5. Table 3-2 Relubrication Intervals * NEMA / (IEC) Frame Size Up to 210 incl. (132) Over 210 to 280 incl. (180) Over 280 to 360 incl. (225) Over 360 to 449 incl. (315) 10000 ** 6000 2700 Hrs. ** ** ** Rated Speed - RPM 3600 1800 5500 Hrs. 12000 Hrs. 3600 Hrs.
Table 3-5 Bearings Sizes and Types Frame Size NEMA (IEC) 56 to 140 (90) 140 (90) 180 (100−112) 210 (132) 250 (160) 280 (180) 320 (200) 360 (225) 400 (250) 440 (280) 440 (280) 5000 to 5800 (315−355) 5000 to 5800 (315−355) 360 to 449 (225−280) AC Induction Servo 76 Frame 180 (112) 77 Frame 210 (132) 80 Frame 250(160) * Bearing Description (These are the “Large” bearings (Shaft End) in each frame size) Volume of grease Weight of Grease to to be added Bearing add * in3 teaspoon oz (Grams) 6203 0.08 (2.4) 0.
Sample Relubrication Determination Assume - NEMA 286T (IEC 180), 1750 RPM motor driving an exhaust fan in an ambient temperature of 43 C and the atmosphere is moderately corrosive. 1. Table 3-2 list 9500 hours for standard conditions. 2. Table 3-3 classifies severity of service as “Severe”. 3. Table 3-5 shows that 1.2 in3 or 3.9 teaspoon of grease is to be added. Note: Smaller bearings in size category may require reduced amounts of grease.
Section 1 General Information Table 3-7 Troubleshooting Chart Symptom Motor will not start Excessive humming Motor Over Heating Possible Causes Usually caused by line trouble, such as, single phasing at the starter. High Voltage. Eccentric air gap. Overload. Compare actual amps (measured) with nameplate rating. Single Phasing. Improper ventilation. Unbalanced voltage. Rotor rubbing on stator. Over voltage or under voltage. Open stator winding. Grounded winding. Improper connections.
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 (80C) 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.
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BALDOR ELECTRIC COMPANY World Headquarters P.O. Box 2400 Fort Smith, AR 72901−2400 (479) 646−4711 Fax (479) 648−5792 www.baldor.com 2009 Baldor Electric Company MN408 All rights reserved.
