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EMERSON MOTOR COMPANY 8100 WEST FLORISSANT AVE.ST. LOUIS, MO 63136

DATE: 5/14/2009 P.O. NO.:Order/Line NO.: 17162 MN

TO:

Model Number: BF37Catalog Number: HO25S2BLF HO25S2BLF,WPI,STD,AC MTR 60,230/460V AU,25HP,4P,A284TPA,NRR

REVISIONS: (NONE)

ALL DOCUMENTS HEREIN ARE CONSIDERED CERTIFIED BY US ELECTRICAL MOTORS. THANK YOU FOR YOUR ORDER AND THE OPPORTUNITY TO SERVE YOU.

Features:HorsePower . . . . . . . . 25Enclosure. . . . . . . . . WPI

Poles. . . . . . . . . . . 04RPM (Full Load). . . . . . 1765Motor Frame Size . . . . . 284TPAPhase. . . . . . . . . . . 3Frequency. . . . . . . . . 60Voltage. . . . . . . . . . 460-230Motor Type Code. . . . . . AURotor Inertia (LB-FT) 1.99 LB-FTQty. of Bearings PE (Shaft) 1Qty. of Bearings SE (OPP) 1Bearing Number PE (Shaft) 7310 BEPBearing Number SE (OPP) 6210-2Z-J/C3

Emerson Motor Company is a division of Emerson Electric Co.The Emerson logo is a trademark and service mark of Emerson Electric Co.

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Connection Plate: A109145 Connection Decal: 344122

A109145

Motor Wiring Diagram9 Lead, Dual Voltage (DELTA Conn.)

T1

T2T3

T4

T5

T6 T7

T8

T9

Delta Connection

Lo - Volts Hi - Volts

49 7974

5 8 6

3 12

685

123

Line Line

To reverse direction of rotation interchange connections L1 and L2.

Each lead may have one or more cables comprising that lead. In such case each cable will be marked with the appropriate lead number.

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970798

SPACE HEATER NAMEPLATE (ON MOTOR)

SPACE HEATERCONNECTION DIAGRAM

SPACE HEATER LEADS MAY BE LOCATED IN EITHER THE MAIN OUTLET BOXOR IF SO EQUIPPED, AN AUXILIARY BOX

THIS EQUIPMENT IS SUPPLIED WITH ANTI-CONDENSATION HEATERS. HEATERS

SHOULD BE ENERGIZED WHEN EQUIPMENTIS NOT OPERATING TO PROTECT UNIT BYPREVENTING INTERNAL CONDENSATION.

CONNECT THE "H" OR HEATERLEADS TO

115V VOLTS 48W WATTS RATING

Revision: 7/30/2008Mike Cullen

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FRAMES 254 THRU 286 - OPEN DRIPPROOFTYPES: AU, AUE, AUI, AV, AV4, AV9, AVE, AVE4, AVI, AVI4, AU, AUE, AUI, AV, AV4, AVE, AVE4, AVI, AVI4

HIGH THRUST HOLLOSHAFT AND SOLIDSHAFT MOTORS

ITEMNO. QTY NAME OF PART

1 2 Eyebolt

2 1 Canopy Cap

3 1 Upper Bracket

4 1 Grease Fitting

5 1 Plastic Cap (Grease Fitting)

WARNING:Any disassembly or repair work on explosionproof motors will void theUnderwriters Laboratories, Inc. label unless done by the manufacturer,or a facility approved by the Underwriters Laboratories, Inc. Refer toyour nearest U.S. Elecrical Motors office for assistance.

BEARINGS:Refer to motor nameplate for the bearingnumbers.

PRICES:Parts stocking distributors: refer to USEMrenewal parts numerical index. All Others:refer to your nearest USEM parts distributor.

reference: Renewal Parts Section 700, Pages 147 & 148

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Standard Coupling Dimensions

Notes:

1. All Rough casting dimensions may vary by 0.25" due to casting variations.2. All tapped holes are Unified National Course, Right Hand thread.3. Coupling bore dimension "BX" is machined with a tolerance of - .000", +.001" up to 1.50" bore inclusive. Larger bores: -.000", +.002".

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Copyright 2000 U.S. Electrical Motors, All rights reserved

Coupling Part Number 102999

BX Nominal 1

Actual Bore 1.001

BY 10-32

BZ 1 3/8

XB 2 9/16

XD 13/32

XE 2 1/4

XF 1 5/8

SQ. KEY 1/4

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Copyright 2000 U.S. Electrical Motors, All rights reserved

USEM MODEL NO: BF37USEM CATALOG NO: HO25S2BLF

Frame: 284TPA Type: AU

REED CRITICAL FREQUENCY: 75 HZ

CENTER OF GRAVITY: 11 IN

DEFLECTION @ CENTER OF GRAVITY: 0.002 IN

UNIT WEIGHT: 350 LBS.

BASE DIAMETER: ALL IN.

MAXIMUM MOTOR DIAMETER: 14.00 IN.

DATE: 5/14/2009

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Vertical A.C. MotorsWeather Protected Type I Holloshaft High Thrust

For use on turbine, mix flow and propeller pumps

3 - 4000 Horsepower

3600 through 514 rpm

Low and medium voltage through 6900 volts

Three phase, 60 and 50 hertz

Three efficiency levels - standardefficient, energy efficientand premium efficient

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All open type vertical motors offered by U.S.Motors features a NEMA WPI enclosure asstandard. It is designed to minimize the

entrance of contaminants and airborne debriswhile protecting the internal components.Also, it is designed to prevent a 3/4 inchdiameter rod from passing into the motor.

A unique feature of U.S. Motors' WPI designis the motor's air flow pattern. Cooling air isdrawn in through the motor and exhausted insuch a way to avoid drawing any pumped fluidsinto the motor should the pump's packing sealor mechanical seal fail. Furthermore, corrosionresistant screens and grills cover all openingspreventing snakes, rodents, etc., from enteringthe motor. This is our standard product foroutdoor service.

Product Overview

Our Weather Protected Type I (WPI)Holloshaft motors are constructed tominimize the entrance of rain, snow andairborne particles. Our enclosures exceedNEMA requirements because U.S. Motorshas built in the extra protection needed forrugged outdoor applications. The ventilationsystem is designed to provide optimumcooling to the thrust bearing and electricalcomponents and is available in all motor sizes.

These motors allow for easy pump impelleradjustment and maintain alignment of pumpbase to motor drive clutches. Steady bushingsare available to give the mechanicalcharacteristics of a solid shaft motor.

In our design concept, the high thrust verticalmotor is arranged into four functional zones -the top zone is small and light to assuresimplified access to the coupling area and

inspection of the thrust bearing. Below this isthe coupling area and the essential elementsof thrust bearings with a large weatherprotected air intake to cool the motor and thrustbearing.

Next, the center, or winding section, developsthe driving torque and includes the latestInsulife insulation systems. And below, themounting base is compact and designed formomentary upthrust of the pump.

The benefit of the four zone design is a motorwhich is more easily installed and serviced andwhich allow operator protection andconvenience.

ThrustWeatherCoupling

Torque

Mounting

Access

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Construction Features

Vertical motors with bearing configurationstailored to your specific needs is a hallmarkof our product offering. U.S. Motorsengineers can select from ball, angularcontact, spherical roller and plate typebearing options to provide maximumbearing life regardless of the thrustconditions. U.S. Motors thrust bearingcapacities are among the highest in theindustry.

Our non-reverse ratchet, The Ball-O-Matic , is without question the finest

ratchet available. The Ball-O-Matic preventsreverse rotation within 4.5 degrees of rotation,has unlimited depth setting and can be usedin explosionproof applications.

The following diagram shows the typical Holloshaft construction features:

1. Lightweight Top Cover2. Coupling readily accessible

3. Lockbar holds shaft during adjustments4. Lifting Lugs positioned for stability5. Protected Air Openings exceed NEMA WPI requirements6. Precision Machined Mounting Base , ample clearance for mounting bolt installation7. Rugged Bearing withstands heavy load thrusts8. Large Plug simplifies oil fills9. Sight Gauge Window for quick oil level reading10. Metered Oil Flow minimizes churning11. Dual Air Flow system for uniform cooling of motor top and bottom12. Windings Protected by new, synthetic materials13. Solid Die Cast Rotor with integral fan blades

The Ball-O-Matic

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Our Inverter Duty product offers an InverterGrade insulation system with superior pulseendurance to withstand the waveform stressesproduced by the PWM drives. In addition tothe pulse resistant magnet wire, our protectionsystem includes additional lacing on end turns,phase paper and additional dips and bakes.This system meets the stringent requirementsoutlined in NEMA MG-1, Part 31.

Many extra features, accessories andmanufacturing steps have been incorporatedinto our vertical motor designs to improve theoverall performance and greatly extend motorlife. Available modifications include specialaltitude, special ambient temperatures,special balance and copper bar rotors.Available accessories include currenttransformers, space heaters, lightningarrestors and protective devices for bearings,windings and vibration.

Contact your U.S. Motors representative tolearn more about our full compliment ofaccessories and modifications on our verticalmotors to provide you with the exact productfor your application.

Vertical Holloshaft WPI

All vertical products are supplied with theInsulife winding system. For low voltageNEMA frame products, the copper woundstator core is insulated with non-hydroscopicClass F or H rated materials, and is thentreated with polyester varnish for extramoisture protection. Vacuum pressureimpregnation (VPI) is an available option onframes 320 and larger.

Medium voltage form wound motors are

wound with Class F or Class H materials andare treated with two complete cycles of 100%solid epoxy VPI. This produces a minimum of6 mils insulation build. U.S. Motors does notmanufacture random wound medium voltagemotors for quality reasons. Our Eversealsealed winding system is an available optionfor form wound machines.

Another option available on our VerticalMotors is Inverter Grade Insulation System.U.S. Motors was the first motor company torecognize that the pulse width modulation(PWM) adjustable frequency technologyoffered substantial payoff in better equipmentcontrol and increased energy savings, but italso created new challenges for existing motorinsulation systems.

Stock, conversion or built-to-order, U.S. Motors has your vertical motor solution.

REGIONAL OFFICES PHONE FAXDOMESTIC U.S. SALES (888) 637-7333 (314) 553-1101INTERNATIONAL SALES (314) 553-3185 (314) 553-2135MONTREAL, QUEBEC/CANADA (800) 361-5509 (514) 332-5912TORONTO, ONTARIO/CANADA (905) 475-4670 (905) 475-4672

2001 U.S. Electrical Motors - Prices, specifications and ratings subject to change without notice. Printed in the U.S.A

Emerson Motors8100 West Florissant Avenue, St. Louis, MO 63136

WWW Home Page: http://www.usmotors.com

PDS 514-190 01/01

REGIONAL OFFICES PHONE FAXMONTERREY, MEXICO (52) 8-389-1312 (52) 8-389-1310CARACAS, VENEZUELA (58) 02-2377522 (58) 02-2329727BOGOTA, COLOMBIA (57)1- 439-5420 (57)1- 439-5417