Teco VHTP2506 Reference Drawing

ISSUED MODEL

AEEHNH

APR. 30 2015

REVISED

HIGH THRUST HOLLOWSHAFT PUMP MOTORS

PERFORMANCE DATA

LOW VOLTAGE SQUIRREL CAGE

TEFC, NEMA T-FRAME DESIGN B, CODE G, CLASS F, 40℃ AMBIENT,

CONTINUOUS DUTY, 1.15 S.F. 230/460V 60HZ

TYPICAL PERFORMANCE (460V)

FULL FRAME

LOAD SIZE

EFFICIENCY POWER FACTOR CURRENT

FULL 3/4 1/2 FULL 3/4 1/2 FULL

LOAD %

LOAD LOAD LOAD LOAD LOAD LOAD ROTOR LOAD ROTOR

LOCKED FULL

TORQUE

LOCKED

ROTOR APPROX. REED

BREAK-

DOWN

THRUST

DOWN

APPROX.

ROTOR

WEIGHT

WEIGHT FREQ.

RPM (EHV)

1186 442.995.0 94.9 94.5 74.879.8

100

890

1781

125

1186

889

1781.

150 1188

890

1781

200

1188 1783

250

1188

300 1783

NOTE：

NOM. MIN. 444TP 447TP

95.4 445TP 447TP 445TP 447TP 449TP 447TP 449TP 449TP 449TP 328 1977 449TP

95.0

95.8

95.8 77.2

95.0 94.9 94.5

96.2

95.8

96.2

THE ABOVE ARE TYPICAL VALUES BASED ON TEST ACCORDING TO ANSI／IEEE STANDARD 112 METHOD B.

BREAKDOWN & LOCKED ROTOR TORQUES ARE SHOWN AS AVERAGE EXPECTED VALUES. EFFICIENCY, POWER FACTOR, SPEED AND TORQUE ARE THE SAME FOR OTHER VOLTAGES.

CURRENT VALUES VARY INVERSELY WITH VOLTAGE.

4. DECLARED EFFICIENCY HAVN`T TAKEN INTO ACCOUNT OF THRUST LOAD LOSSES

5. TOLERANCE ACCORDING TO NEMA MG1-12& IEC 34-1

6. THRUST LOAD LOSSES ESTIMATED OF ANGULAR CONTACT BALL BEARING AS FOLLOWS：(ACCORDING TO NEMA STANDARD MG1-12.7)

NOM. NOM.

94.1

94.4 94.0 76.0

93.694.5

95.3 94.9444TP

94.5

94.1 94.9 94.5 64.0

94.9

94.1

95.7 166 1186

95.0

95.7 95.3

95.0

94.1

95.4 96.1

95.0

95.7 76.6

95.4

96.1 95.7

95.0

95.7 95.3

95.4

FRAME SIZE 444TP~445TP 447TP~449TP

7. REDUCING THE THRUST LOAD WILL INCREASE BEARING LIFE AS FOLLOWS：

THRUST(%) 100 82 73 63 56 51

BEARING LIFE(Hrs.) 8800 15000 20000 30000 40000 50000

8. DATA SUBJECT TO CHANGE WITHOUT NOTICE

9. IS SUITABLE FOR 4, 6 POLE UP TO 200HP.

10. 230/460 V UP TO 125HP, 150HP AND ABOVE, APPLY 460/(800) V ONLY

% % % A A lb-ft %FLT %FLT

791

988

1186 1581

590.2791

553.7

738.6988

663.3

885.4

589.9

884.4

736.6292 1977

1105.5

130 143 155 988 10100 161

189 1186 192 235 254 1581

351 2372 883.9

85.6

79.0

76.294.5

95.3

88.0

76.6 71.6 61.6

82.5

95.395.8

83.1

74.3

83.1

64.8 123 100 220 56.8

71.0 61.0

70.6

80.6 8900368.7 100

74.0

71.2 61.2

83.0 73.0

72.2 62.2

77.595.7

61.6

71.6

78.1 68.1

69.3 59.3

68.1

78.196.1 95.7

LOSS HP /100 RPM RPM/1000 LB THRUST

100

220 210

100

220

100

220 140.4

100442.4

210 210

100 100 100

200

100

210

100

210 100 210 100

220

0.0180

0.0194

lb-ft

119.6

36.1

66.9

47.9

97.7

189.6220

62.2

123.2

79.3 10100 2840

93.0

LBS 10100 490 12600

12600

8900 1990 11500 2440 12600 2990 10100 2420 11500 2850

11500 3110145.1 10100 3070

LBS

690 400 550 770 470 640 970

53067.5 750 620 840 690

LBS Hz 1950 2390 1960 2060 2570

43 44 43 40 43 41 44 35 44 36 36 34 34

APPD.

CHKD.

DWN.

M.Y.HSU

H.Y.WANG

JUL. 30 2013

TECO Electric & Machinery Co., Ltd.

DWG NO.

3A057M068E

REV.00 1/1

DATE：

May

.01.200

LOW VOLTAGE

LINE RUN (

)△

△△

△

LINE START (

2Y)

HIGH VOLTAGE

LINE RUN (

)△

△△

△

LINE START (

RUN

( 2

)△

△△

△

12 10 9

7 2 5

6 8 11

1 4 3

12 10 9

7 2 5

6 8 11

1 4 3

12 10 11

6 4 5

7 8 9

1 2 3

9 7 8

6 4 5

12 10 11

1 2 3

12 10 11

4 5 6

7 8 9

1 2 3

12 10 11

6 4 5

7 8 9

1 2 3

CONNECTION DIAGRAM

4P 2 /△ 2Y/△/Y 12 leads

For Y-△start or PWS on Low Voltage

MODEL

DAC-1705

T10

T11

T12

SCHEMATIC － 2△/2Y/△ /Y CONNECTION

Y-△ start Connection

APPD. CHKD.

DWN.

START ( )△

M.C.Tsai May,01,’09

C.L.Huang May,01,’09

J.C.Lan May,01,’09

PWS on Low Voltage Connection

△

△△

DWG NO：

DAC-1705

Instructions For

Three Phase Induction Motors

Vertical High Thrust Type

IEC Frame 112 (NEMA Frame 182) and above

Addendum A

INDEX

Page

1. INTRODUCTION ..................................................................................................................... 3

1.1 General ............................................................................................................................. 3

1.2 Serial Number of the Machine ........................................................................................ 4

1.3 Mounting Position ........................................................................................................... 4

1.4 Direction of Rotation ....................................................................................................... 4

2. ACCEPTING, INSPECTION, STORAGE, TRANSPORTATION ......................................... 5

2.1 Inspection Upon Receipt ................................................................................................. 5

2.2 Storage ............................................................................................................................. 5

2.3 Transportation ................................................................................................................. 9

3. INSTALLATION ..................................................................................................................... 10

3.1 Site and Environment for Motor Installation ............................................................... 10

3.2 Foundation ..................................................................................................................... 11

3.3 Installation of Shaft Coupling ....................................................................................... 12

3.4 Electrical Connections ................................................................................................... 15

4. OPERATION........................................................................................................................... 17

4.1 Examination Before Start .............................................................................................. 17

4.2 Starting Operation ......................................................................................................... 21

5. MAINTENANCE .................................................................................................................... 25

5.1 Major Points in Regular Inspection and Maintenance ................................................ 25

5.2 Motor Windings ............................................................................................................. 25

5.3 Clean the Interior of the Motor ..................................................................................... 26

5.4 Clean the Exterior of the Motor .................................................................................... 27

5.5 Maintenance of Anti-friction Bearing ........................................................................... 28

5.5.1 Frequency of Relubrication ................................................................................... 28

5.5.2 Kinds of Grease .................................................................................................... 28

5.5.3 Grease Quantity .................................................................................................... 30

5.5.4 Re-Greasing .......................................................................................................... 30

5.5.5 Oil Relubrication (For oil lubrication types only) .................................................. 31

5.5.6 Cleaning and Installation of Bearings .................................................................... 32

5.6 Maintenance of Non-Reverse Ratchet Mechanism ...................................................... 32

5.7 Dismantling and Assembly Procedure .......................................................................... 40

5.8 Records of Operation and Maintenance ....................................................................... 42

6. FAULT FINDING AND RECOGNITION ............................................................................. 37

7. RECYCLE ............................................................................................................................... 39

Appendix 1. Daily Inspection ...................................................................................................... 42

Appendix 2. Monthly Inspection ................................................................................................ 43

Appendix 3. Regular Inspection ................................................................................................. 44

Appendix 4. Typical Motor Cross Sectional Drawings

Appendix 4-1. Typical Motor Cross Sectional Drawings

Appendix 4-2. Typical Motor Cross Sectional Drawings

Appendix 5.Typical Motor Cross Sectional Drawings

Appendix 5-2. Typical Motor Cross Sectional Drawings

Appendix 6. Typical Motor Cross Sectional Drawings

：：：：

SCIM, TEFC .................................... 47

：：：：

SCIM, TEFC ......................... 48

：：：：

SCIM, TEFC ......................... 49

：：：：

ODP ................................................... 50

：：：：

ODP ....................................... 52

：：：：

SCIM, TEWC ................................... 53

Appendix 7. Typical Ball Bearing Construction Drawing ......................................................... 54

Appendix 7-1. Typical Ball Bearing Construction Drawing .............................................. 55

Appendix 8. Typical Roller Bearing Construction Drawing...................................................... 56

Appendix 9. Typical Ball Bearing with Insulation Bushing Construction Drawing ................. 57

Appendix 10. Typical Thrust Bearing Assembly Drawing (Vertical Machine) ......................... 58

Appendix 11. Shaft Earth Brush Assembly Drawing (TAC) ..................................................... 59

Appendix 12. Shaft Earth Brush Assembly Drawing (TECO) .................................................. 60

Appendix 13. Bolt Torque (kg-cm) ............................................................................................. 61

Appendix 14. TECO Worldwide Operations ............................................................................. 62

Addendum A

1. INTRODUCTION

1.1 General

TECO-Westinghouse high thrust vertical motors covered in this instruction manual are high quality materials and designed to give long and trouble free service when properly installed, maintained and operated in strict accordance with the outline drawing, motor nameplates and this instruction manual. These motors, including both hollow shaft and solid shaft, are generally used to drive pumps and must not be altered or modified in any unauthorized manner.

High voltage and rotating machinery could cause serious injury or loss of life. Installation, operation, and maintenance must be performed by qualified and competent personnel only.

Since this instruction manual cannot cover every eventuality of installation, operation and maintenance, the following points should however be considered and checked.

● Technical data and information on permissible use such as assembly, connection, ambient, area classification and operating conditions given in the related catalogue, operating instructions, nameplates and other production documentation.

● General assembly/installation and safety regulations

● Local (job site) and plant-specific specifications and requirements

● Proper use of transport, lifting devices and tools

● Use of personal protective equipment

The following safety indications should be observed when reading these instructions:

Electric Hazard.

Danger.

ATTENTION！！！！

Warning of possible damage to the motor or installation.

This instruction manual is for TECHNICAL USE ONLY, NOT FOR COMMERCIAL PURPOSE. The warranty is limited to coverage expressed in your sales contract. Documentation of storage, transportation, installation and examination, if required, shall be obtained from TECO-Westinghouse service centers before start and maintenance.

1.2 Serial Number of the Machine

Each electric motor is identified with a serial number. Serial number is stamped on a main name

plate which is attached to the frame by rivets.

1.3 Mounting Position

All vertical motors covered in this instruction manual, shall be arranged vertically as shown below

during storage, transportation, handling and installation.

IM3011

Vertical flange mounting (VFM)

Fig. 1 Mounting Arrangement

1.4 Direction of Rotation

The arrow on the direction nameplate indicates the direction of the rotation, view from Non Drive

End (or top). The motor must be operated in the direction shown.

Fig. 2 Direction nameplate

ATTENTION！！！！

Operating the motor in the incorrect direction may cause serious damage to both the motor and driven equipment.

Addendum A

2. ACCEPTING, INSPECTION, STORAGE, TRANSPORTATION

2.1 Inspection Upon Receipt

Check the following upon receipt:

● Is there any visible damage to the motor or case? Any damage should be photographed, documented and reported to the carrier and TECO-Westinghouse immediately.

● Are the nameplate ratings identical with your confirmed order？

● Are dimensions and color in compliance with your specifications？

● Are the nameplate ratings for heater, thermal protector, temperature detector, etc. identical with

your confirmed order？

● Are all accessories and accompanying instruction manuals in good order？

● Does the arrow head indicate the correct direction of rotation?

● If there are any specific requirements, please ensure they are in conformity with your

specification.

● Motor stator housing may be outfitted with condensation drain holes that are either open holes, drain holes with plugs or drain holes with breather drains. For horizontally mounted motors position the drain holes at the lowest point possible to allow for the egress of condensation. For vertical shaft installations the lower end bracket must be outfitted with drains at the lowest point possible. Prior to installation remove drain plugs if fitted.

2.2 Storage

2.2.1 General

When motors are not in operation, the following precautionary measures must be taken to insure the motors do not suffer deterioration or damage from moisture, dust and dirt, or careless handling. The climate, length of time the equipment is to be stored, and the adequacy of the storage facilities will determine the storage precautions required.

Any deterioration or damage of the motors due to customer's incorrect storage of the motors is not covered by the warranty. This includes all periods of time when the motor is installed on site but has not been placed into operation.

The following procedures must be followed and a maintenance log must be kept to keep from voiding factory warranty. The records are also useful to decide if a motor is suitable or not to be put into service.

2.2.2 Location

The ideal storage area is a clean, heated, and well-ventilated building.

(a) High and dry, well-ventilated indoor, without exposure to direct sun lights, free from dust,

corrosive gas (such as chlorine, sulfur, dioxide, and nitrous oxides) and fumes, and infestation by vermin or insects.

(b) The ideal storage temperature range is from 10 ℃to 50℃ (50 to 12℉5℉), and relative

humidity is

≦60%.

(d) Precautions should be taken to prevent rodents, snakes, birds or other small animals from

nesting inside the motors. In area where they are prevalent, precautions must be taken to prevent insects, such as dauber wasps, from gaining access to the interior of motors.

(e) Entirely free from vibration. Vibration levels above 3.8 mm/s (0.15 in/sec) velocity could

damage the bearings and cause “false brinelling” of the bearing races.

(f) Motors should be put on pallets to prevent moisture from accumulating underneath.

(g) Motors should be stored in a heated building, outdoor storage is not suitable for motors.

(h) If motors have to be stored outdoors for some reasons, they should be well covered with a

tarpaulin and protected from contamination and moisture. The cover should extend to the ground however it should not tightly wrap the motor. This will allow the captive air space to breath, minimizing formation of condensation. Motors should be well shielded from dust, but under well-ventilated conditions. Outdoor storage should be for a very short period of time (less than one month) only and the risk of deterioration is the responsibility of the users.

2.2.3 Motor Position

Motors must be stored in vertical position. Where motors are mounted to machinery, the mounting must be such that drains and breathers are fully operable and are at the lowest point of the motor.

2.2.4 Moisture Prevention

Since moisture can be very detrimental to electrical components, the motor temperature should be maintained about 5℃ above the dew point temperature by providing either external or internal heat. If the motor is equipped with space heaters, they should be energized at the voltage shown by the space heater nameplate attached to the motor. Check weekly that the space heaters are operating.

Incandescent light bulbs can be placed within the motor to provide heat, if the anti-condensation space heaters are not fitted. However, if used, incandescent bulbs must not be allowed to come in contact with any parts of the motor because of the concentrated hot spot that could result.

2.2.5 Prevent Corrosion and Frost Damage

When motors are shipped from the factory, external machined surfaces, including the shaft extension and bearing journals on sleeve bearing motors, are covered with a protective coating. This coating should be examined periodically to make sure that it has not been accidently removed. If necessary, re-coat the surfaces with a rust inhibiting material, such as Rust Veto No.342 or an equivalent. Care should be taken to keep parts such as fitted surface, key, shaft extension, mounting feet or face, and axial central hole from any collision with foreign matters, and to have rust preventative in place. It is a good practice to seal any shaft openings with silicone, rubber caulking, or tape. If any rust is observed, measures should be taken to remove the rust and protect against it. Grease or anti-corrosion agent should also be generously applied to prevent rusting.

ATTENTION！！！！

Immediately remove any shrink wrap that may have been used during shipping. Never wrap any motor in plastic for storage. This can turn the motor into a moisture trap causing severe damage.

For water-cooled motors or motors using bearings with water-cooling coils, please make sure the water is dried off of the coils to prevent tube corrosion or frost damage.

TECO-Westinghouse reserves the right to void warranties based upon evidence of rust or other indications of moisture inside the motor that indicate that the motor was improperly stored.

Addendum A

2.2.6 Insulation Resistance Test

Even during storage, the insulation resistance should be kept above the specified values.

(a) For measurement of insulation resistance and acceptable standard values, please refer to

measures stated in 4.1.2 "Measurement of insulation resistance".

(b) Insulation resistance test should be performed once every three months.

0Ω/℃)

is necessary once every

three months.

2.2.7 Long Period of Idle (storage)

If the motor is not in operation for a long period of time (one week and above) after installation or has been in operation but stopped for a period of time, the following precautions must be taken.

(a) Protect the motor as stated in 2.2.4 and 2.2.5.

(b) Insulation resistance test should be performed as stated in 2.2.6.

(d) Operation test should be performed once every three (3) months.

(e) If external vibration is present, the shaft coupling should be opened.

(f) If motors are equipped with drain plugs, they should be removed.

(g) When motors equipped with brushes, the brushes should be lifted in the brush holder, if there is

no protective strip (such as MYLAR) between the brushes and collector rings.

(h) For water-cooled motors or motors using bearings with water-cooled coils, ensure the water is

dried off the coils to prevent tube corrosion or frost damage.

(i) Storage maintenance must be documented for warranty and reference purposes.

2.2.8 Bearing Protection

(a) If the motor has been provided with a shaft shipping brace to prevent shaft movement during

transit, it must be removed before operating the motor. It is very important that this brace be reinstalled exactly as it was originally, before the motor is moved from storage or any time when the motor is being transported. This prevents axial rotor movement that might damage the bearings.

Shaft Shipping

Brace

Shaft Shipping

Brace

ent

sloshing and possible damage. Refill oil when motor has been moved to the new

Fig. 3-1 Fig.3-2

Shaft Shipping Brace

(b) Motors equipped with oil lubricated bearings are shipped from the factory with the bearing oil

reservoirs drained. In storage, the oil reservoirs should be properly filled to the center of the oil level gauge with a good grade of rust inhibiting oil. To keep the bearing well oiled and prevent rusting, the motor shaft should be rotated several revolutions every month ensuring the shaft does not come to rest in its original position. If the motor is not in operation for over six months, dismount the upper cover of the bearing housing and check the anti-corrosion protection.

Fig. 4 Upper and lower bearing

Motor must not be moved with oil in reservoir. Drain oil before moving to prev

location.

Addendum A

factory and no further greasing is required in storage. If the motor is not in operation for over three months, add grease to each bearing per lubrication nameplate. The shaft should be rotated at least 15-20 revolutions every month to maintain proper distribution of the grease within the bearings.

(d) If the storage is over two years, it is recommended that the bearing assembly be dismantled and

that the bearing parts are inspected before commissioning. Any corrosion has to be removed with fine emery cloth.

2.2.9 Removal From Storage

After long period of idle or storage, and, prior to energizing the motor, a thorough inspection and megger test of windings is required. The bearings should be inspected for corrosion, false brinelling and deformation.

If any of the following conditions exist, then re-conditioning may be required before putting a motor into service.

(a) Winding resistance is less than recommended.

(b) Evidence of rust or other indications of moisture inside the motor.

(d) Idle or storage longer than the warranty period.

(e) Idle or storage in dirty or damp surroundings.

(f) Storage in unheated area where the temperature and humidity fluctuate.

(g) Idle or storage where it has been subject to vibration, such as from nearby machinery or passing

traffic.

(h) Outdoor storage.

(i) No maintenance records showing that the storage procedures have been followed.

Any reconditioning required, as noted by the inspections after removal from storage, should be performed prior to putting the motor into service. Such inspection and testing or re-conditioning are available from local TECO-Westinghouse service/facilities. Reconditioning after idle or storage is not covered by factory warranty. Any parts that must be replaced due to damage or deterioration will be at customer’s cost.

2.3 Transportation

ATTENTION！！！！

To keep the rotating parts of motors from moving, thus preventing damage and scratching during transportation, they should be held securely with a locking device. Ensure all locking devices are removed before operating the motor. This device must be reinstalled, exactly as it was originally, before the motor is moved from storage or any time when the motor is being transported.

Vertical mount type motors should be transported in a safe stable and vertical position only.

Do not use the hoisting hook/eyebolts to lift more than the motor itself. They are designed to support the motor only.

Make sure the hoisting hook is correctly attached to the eyebolt(s) or lug(s) of the motor and that the eyebolt(s)/lug(s) are fully threaded in before hoisting. Also note such parts as fan cover, ventilation box, bracket, slip-ring covers, etc. may have their own hoisting lugs which can only carry their own weight. Nothing extra should be attached while hoisting.

Do not twist or cross the steel cables. Make sure the eyebolts have been securely threaded with the shoulder flush and the sling angle is correct.

Suspension Rod

Fig. 5

3. INSTALLATION

3.1 Site and Environment for Motor Installation

3.1.1 General

Standard environment and site conditions for the installation of motors are usually set as follows:

(a) Ambient temperature: -20 ~ +40 ℃

(b) Humidity: Relative humidity shall be below 95%RH for totally-enclosed types, and below

80%RH for semi-enclosed types.

(d) Harmful gases, liquids, dusts and high moisture levels should be absent.

(e) Foundations should be strong and free of vibration.

For water-cooled motors or motors using bearings with water-cooling coils, the ambient temperature must not drop below 5 (℃41℉) to prevent frost damage. If lifting a motor under -20

℃

Addendum A

is required, or there are any special environmental conditions, please inform us at time of order.

3.1.2 Ventilation and Space

(a) Installation area should be well-ventilated.

(b) The installation space should be large enough to facilitate heat dissipation and maintenance.

3.2 Foundation

Motor manufacturer is not responsible for the foundation design. Motor weight, thrust load, twisting moments, seismic forces and other external applied loads must be considered in foundation design by others.

3.2.1 Reactions of Vertical Motor

For a vertical motor with N pcs hold down bolts, the reactions necessary for foundation design are as follows – kgs per bolt at centerline of hold down bolt holes:

(a) Rated motor torque（T

(b) Maximum motor torque（T

Reactions = T

/ bolt number/ PCD/2

max

）

, reactions = TR / bolt number/( PCD/2 )

）

max

Fig. 6

3.2.2 The foundation of vertical induction motor (Also the foundation of pump)

(a) Foundation of motor/pump must be rigid and secure to provide adequate support. There must be

no vibration, twisting, misalignment etc. due to inadequate foundations.

(b) A massive concrete foundation is preferred in order to minimize vibration. Rigidity and stability

are enhanced by prop plate and foundation bolt. As shown in Fig.7 and Fig.8.

Foundation bolt

(SS41)

Pump

Prop plate

Hex nut

Motor

Base plate

Motor support

Concrete

Base foundation

Fig. 7

3.2.3 Installation of vertical motor

(a) All mounting surfaces must be clean and level. (b) Foundation must be leveled at least at 4 points and guaranteed to be below 0.04mm flat and

level.

acceptable, then set the motor on the mounting foundation.

(d) Accurately install shaft couplings.

Fig. 8

3.3 Installation of Shaft Coupling

3.3.1 General

ATTENTION！！！！

Motors must always be accurately aligned, and this applies especially where they are directly coupled.

Incorrect alignment can lead to bearing failure, vibration and even shaft fracture. As soon as bearing failure or vibration is detected, the alignment should be checked.

3.3.2 Mounting procedure

Field installation of a coupling to the motor shaft should follow the procedures recommended by the coupling manufacturer. The motor shaft extension must not be subjected to either extreme heat or cold during coupling installation.

3.3.3 Alignment

The motor shaft and the driven shaft should be aligned within the following tolerances in both angular and parallel alignment:

Addendum A

TIR Range of rotating speed

Solid coupling

Flexible coupling

C 2500rpm and above

0.03 0.03

“A” TIR

indicator

Indicator

base

“C” TIR

indicator

base

Below 2500rpm 0.04 0.05

A 2500rpm and above 0.03 0.03

Below 2500rpm 0.03 0.04

Unit：mm

Angular misalignment is the amount by which the centerlines of driver and driven shaft are skewed. It can be measured using a dial indicator set up as shown in Fig.9. The couplings are rotated together through 360 degrees so that the indicator does not measure run out of the coupling hub face. The shafts should be forced against either the in or out extreme of their end float while being rotated.

Parallel misalignment is the amount by which the centerlines of the driver and driven shafts are out of parallel. It can be measured using a dial indicator set up as shown in Fig.10. Again, the couplings are rotated together through 360 degrees so that the indicator does not measure runout of the coupling hub outside diameter.

TIR = Total indicator reading (by dial indicator)

Indicator

Coupling Hubs

Fig. 9 Fig. 10

Coupling Hubs

ATTENTION！！！！

Measurements should be made only after shimming and with hold-down bolts properly tightened.

3.3.4 Dowel for Motor

After the motor has been properly aligned with the driven equipment and the hold-down bolts have been installed and tightened, for motors with fabricated frame, at least two dowel pins should be installed in two diagonally opposite motor feet.

3.3.5 Installation of Shaft Coupling (Vertical Hollow Shaft Motor Only)

Bolted coupling as Fig.11 (a) Bearings are provided to absorb some upward shaft thrust when the coupling is fitted. (b) The coupling is fastened with bolts.

bolt

Pump

Driv

Note：Standard high thrust motors can absorb momentary up thrust load up to 30% of the standard

down thrust load. If the up thrust is long duration (over 10 seconds) and/or exceeds 30% of the standard high thrust rating, special design arrangements are required and a standard motor is not suitable.

Up thrust

shaft

coupling

Drive pin

Ratchet pin

Fig. 11

3.3.6 Non-Reverse Ratchet/Coupling, as Fig. 11 (If fitted)

The non-reverse coupling is also a bolted type and,

(a) It prevents the pump and motor from rotating in the reverse direction.

(b) It also prevents damage from over speeding and damage to pump shaft and bearings.

friction as the motor comes up to speed.

(d) When power is removed, speed decreases, and the pins or balls fall. At the instant of reversal, a

pin or ball will catch in a ratchet tooth and prevent backward rotation.

(e) When installing the non-reverse coupling, do not use lubricant. Lubrication will interfere with

proper operation. The top half of the coupling should seat solidly on the lower half and the pins or balls should touch the bottom of the pockets between the teeth in the plate.

(f) As with the bolted coupling, the up thrust capabilities are 30% of the standard high thrust rating

for down thrust.

ATTENTION！！！！

Do not apply non-reverse ratchets on applications in which the pump reversal time from shutdown (the instant the stop button is pressed) to zero speed is less than one second.

3.3.7 Manual Rotation of Large Vertical Rotor with Sleeve Bearing During Alignment

(a) If there is a thread in the non-drive end shaft center, the breakaway torque can be overcome by

the use of torque wrench provided there is no ratchet. Remove the top cover, insert a bolt in the threaded shaft center and use a torque wrench to apply the rotating force. The breakaway torque value will determine the size of torque wrench required.

Addendum A

Coupling

shaft

Torque [kg-mm] = Rotor Wt [kg] * Thrust Pad Center Radius [mm] * 0.4

0.4 = coefficient of friction for dry lubrication

(b) An alternate is to use a long bar bolted to the coupling to apply the torque.

below using a jack, then the rotor weight is reduced and the torque needed to breakaway is much less. This does not always work, as sometimes the pads adhere to the thrust collar face due to cohesion.

There is no danger of Babbitt damage due to breakaway because it only takes a small revolution of

the rotor to lubricate all shoe surfaces.

3.3.8 Removal of Redundant Shaft Key

When the length of coupling hub is different from the length of shaft key, the motor may have a high vibration level due to this unbalance condition. The removal of redundant shaft key is necessary, shown as Fig.12.

Method (1):

After installing the coupling, use a grinding wheel to remove the redundant key (hatch area).

Method (2):

Before installing the coupling, calculate the different length between coupling hub and shaft key, then cut the half of this different value (hatch area) to achieve approximate-balance condition.

Redundant key

Drive-end

Method (2) Method (1)

Redundant key

Drive-end

Fig. 12

3.4 Electrical Connections

All interconnecting wiring for controls and grounding should be in strict accordance with local requirements such as the USA National Electrical Code and UK IEE wiring regulations.

Wiring of motor and control, overload protection and grounding should follow the instructions of connection diagrams where provided.

The bolted joints between the motor lead and the power cables must be made and

ing

3.4.1 Power

The rated conditions of operation for the motor are as shown on the nameplate. Within the limits, given below, of voltage and frequency variation from the nameplate values, the motor will continue to operate but with performance characteristics that may differ from those at the rated conditions：

+/- 10% of rated voltage

+/- 5% of rated frequency

+/- 10% combined voltage and frequency variation so long as frequency variation is no

more than +/- 5% of rated

ATTENTION！！！！

Operating the motor at voltages and frequencies outside of the above limits can result in both unsatisfactory motor performance and damage to or failure of the motor.

3.4.2 Main Lead Box

The main lead box furnished with the motor has been sized to provide adequate space for the make-up of the connections between the motor lead cables and the incoming power cables.

insulated in accordance with the best industry practices.

3.4.3 Grounding

Both fabricated steel motors and fan cooled cast frame motors are provided with grounding pads or bolts.

The motor must be grounded by a proper connection to the electrical ground system.

3.4.4 Rotation Direction

The rotation direction of the motor will be as shown by a nameplate on the motor, specification table or the outline drawing. The required phase rotation of the incoming power for this motor rotation may also be stated. If either is unknown, the correct sequence can be determined by the following method.

Make sure the motor is uncoupled and the non-reverse ratchet (if installed) has been disabled according to 5.6.3., start the motor and observe the direction of rotation. Allow the motor to achieve full speed before disconnecting it from the power source. Refer to the operation section of this manual for information concerning initial start-up. If resulting rotation is incorrect, it can be reversed by interchanging any two (2) incoming cables.

3.4.5 Auxiliary Devices

Auxiliary devices such as resistance temperature detectors, thermocouples, thermoguards, etc., will generally terminate on terminal blocks located in the auxiliary terminal box on the motor. Other devices may terminate in their own enclosures elsewhere on the motor. Such information can be obtained by referring to the outline drawing. Information regarding terminal designation and the

Addendum A

During and immediately after measuring, the terminals must not be touched as they

nected and there are no moving

connection of auxiliary devices can be obtained from auxiliary drawings or attached nameplates.

If the motor is provided with internal space heaters, the incoming voltage supplied to them must be exactly as shown by either a nameplate on the motor or the outline drawing for proper heater operation.

ATTENTION！！！！

Caution must be exercised anytime contact is made with the incoming space heater circuit as space heater voltage is often automatically applied when the motor is shutdown.

4. OPERATION

4.1 Examination Before Start

4.1.1 Wiring Check

For proper motor installation, ensure the wiring diagram is followed and the points below are adhered to:

(a) Make sure all wiring is correct.

(b) Ensure the sizes of cable wires are appropriate and all connections are well made for the

currents they will carry.

experience.

(d) Ensure the capacity of fuse, switches, magnetic switches and thermo relays etc. are appropriate

and the contactors are in good condition.

(e) Make sure that frame and terminal box are grounded.

(f) Make sure the starting method for the motor in question is followed correctly.

(g) Make sure switches and starters are set at the correct positions.

(h) Motor heaters must be switched off when the motor is running.

4.1.2 Measurement of Insulation Resistance

may carry dangerous residual voltages. Furthermore, if power cables are connected make sure that the power supplies are clearly discon parts.

(a) For rated voltage below 1000V, measure with a 500VDC megger.

For rated voltage above 1000V, measure with a 1000VDC megger.

(b) In accordance with IEEE 43-2000, there are three recommendation minimum insulation

resistance values. These values corrected to 40℃ are：

(1) kV+1 in Megohms for most windings made before 1970, all field windings and windings not

otherwise described.

(2) 100 Megohms for most DC armatures and AC windings built after about 1970 with form

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Teco VHTP2506 Reference Drawing

Specifications and Main Features

Frequently Asked Questions

User Manual