TECO AEHB User manual

TECO Instruction Manual
Squirrel Cage Induction Motors
Whilst Motors are installed awaiting commissioning they must be adequately
protected against the elements, all external components in particular the shaft
extension and external labyrinth seals at the drive end must be fully covered
to avoid water ingress entering the motor body whilst stationery.
Please ensure that both the non drive end and drive end antifriction bearings
are fully purged with sufficient grease at first start up/commissioning
with the recommended grade and quantity of grease.

Teco Installation and Maintenance Manual
TEFC Squirrel Cage Induction Motors
Teco Electric and Machinery Company
Manual Number: IOM ~ TEFC Rev.01
2
TECO Electric & Machinery Co. Ltd.
Table of Contents
Table of Contents................................................................................................ 2
Chapter 1: MOTOR DESCRIPTION .................................................................... 4
Chapter 2: TECHNICAL DATA............................................................................ 5
Chapter 3: INSTALLATION AND COMMISSIONING .......................................... 6
3.1. INSPECTION UPON RECEIPT. ...............................................................6
3.2. STORAGE............................................................................................6
3.3. TRANSPORTATION ..............................................................................9
3.4. INSTALLATION..................................................................................10
3.5. MOUNTING. ......................................................................................10
3.6. COUPLING & ALIGNMENT. .................................................................10
3.7. INSTALLATION FOR BELT DRIVE ........................................................13
3.8. ELECTRICAL CONNECTIONS...............................................................13
3.9. AUXILIARY DEVICES..........................................................................15
Chapter 4: OPERATING INSTRUCTIONS......................................................... 17
4.1. EXAMINATION BEFORE START. ..........................................................17
4.2. STARTING OPERATION. .....................................................................19
4.3. CAUTIONARY POINTS TO NOTE: ........................................................21
Chapter 5: ROUTINE MAINTENANCE ................................................................ 23
5.1. IMPORTANCE OF DAILY INSPECTION..................................................23
5.2. POINTS TO NOTE WHEN STARTING....................................................23
5.3. TEMPERATURE RISE. .........................................................................23
5.4. VIBRATION. ......................................................................................24
5.5. NOISE. .............................................................................................25
5.6. ODOUR.............................................................................................26
5.7. MEASUREMENT OF THREE PHASE CURRENT. ......................................26
5.8. MOTOR APPEARANCE. .......................................................................27
Chapter 6: PERIODIC MAINTENANCE ............................................................ 28
6.1. REGULAR INSPECTION & MAINTENANCE. ...........................................28
6.2. CLEANING OF COILS, DRYING & VARNISHING TREATMENT. ................31

Teco Installation and Maintenance Manual
TEFC Squirrel Cage Induction Motors
Teco Electric and Machinery Company
Manual Number: IOM ~ TEFC Rev.01
3
6.3. VARNISH. .........................................................................................33
6.4. KEY POINTS FOR MAINTENANCE & INITIAL OPERATION INSPECTION AFTER
LONG STORAGE. ...............................................................................33
6.5. RECORDS OF OPERATION AND MAINTENANCE....................................35
6.6. POINTS TO NOTE ON DISASSEMBLY...................................................36
Chapter 7: BEARINGS..................................................................................... 37
7.1. MAINTENANCE OF ROLLING BEARING. ...............................................37
7.2. NOISE OF BEARING. ..........................................................................42
7.3. VIBRATION. ......................................................................................42
7.4. REGULAR INSPECTION. .....................................................................42
Chapter 8: Troubleshooting............................................................................ 44
8.1. FAULT FINDING & RECOGNITION.......................................................44

Teco Installation and Maintenance Manual
TEFC Squirrel Cage Induction Motors
Teco Electric and Machinery Company
Manual Number: IOM ~ TEFC Rev.01
4
Chapter 1: MOTOR DESCRIPTION
This manual applies to Teco model series types as follows:
AEEB, AEVB, AEHB, AEMB, AEUB, AEHD, AEJE, AFJE, AEJU, AEJH and AFJH.
The motors are of Cast Iron Construction, Totally Enclosed Fan Cooled, Squirrel
Cage Induction type designed for operation on a 415/1000/3,300/6,600V/ 3 Phase
50Hz supply system equipped with grease lubricated anti friction type bearings.
SAFETY WARNING
The following instruction address the more common situations
encountered in motor installation, operation and maintenance. For the
TECO warranty to remain valid, the motor must be installed and
operated in strict accordance with the outline drawing, motor nameplate
and these instructions and must not be altered or modified in any
unauthorized manner.
During the installation & operation of motors in heavy industrial
applications there is a danger of live electrical parts and rotating parts.
Therefore to prevent injury and/or damage the basic planning work for
transport, assembly, installation & operation needs to be carried out by
authorized and competent personnel. Points in this manual that are
boxed and headed “DANGER”, “CAUTION” or “NOTE"(see below) should
be observed as they indicate possible danger to personnel and/or the
potential of equipment damage.
This prompt is used when there is an immediate hazard that WILL
result in severe personal injury or death if correct procedures are not
followed.
This prompt is used to warn against potentially unsafe practices that
COULD result in personal injury and/or property damage if correct
procedures are not followed.
This prompt is used when an operation, condition, or information is of
sufficient importance to warrant highlighting

Teco Installation and Maintenance Manual
TEFC Squirrel Cage Induction Motors
Teco Electric and Machinery Company
Manual Number: IOM ~ TEFC Rev.01
5
Chapter 2: TECHNICAL DATA
This manual covers a power outputs ranging through to 1500kW with varying
frame sizes and speeds etc.
For motor technical data refer to appropriate motor data sheet.

Teco Installation and Maintenance Manual
TEFC Squirrel Cage Induction Motors
Teco Electric and Machinery Company
Manual Number: IOM ~ TEFC Rev.01
6
Chapter 3: INSTALLATION AND COMMISSIONING
3.1. INSPECTION UPON RECEIPT.
Check the following points upon receipt:
a. Is the nameplate rating identical to your order?
b. Do dimensions and colour comply with your specification?
c. Are the nameplate ratings for the heater, temperature detector etc.
identical with what you ordered?
d. Is there any damage due to transportation?
e. Is the original transportation shaft lock fitted to the drive end shaft?
f. Are all accessories in good order?
g. If there are any specific requirements, please check if they conform with
your specification.
3.2. STORAGE
When storing motor, the following procedures should be undertaken.
3.2.1. Place.
a. It should be dry, well-ventilated and not subject to direct sunlight, dust or
corrosive gas.
b. It should not be located close to a boiler or freezer.
c. It should be entirely free from vibration and have easy access.
d. Motor should be stored on pallets to prevent moisture ingress.
3.2.2. During storage, the insulation resistance should be kept above the specified
values as follows:-
a. Stator: Above 50MΩ measured with 1000VDC megger.
b. If the motor has absorbed moisture as evidenced by low insulation
resistance, it must be dried with external heat until it is thoroughly dry and
the value of insulation resistance exceeds the minimum requirements.
c. Measurement of insulation resistance should be performed once every
month.
d. Anti-condensation heaters should always be connected where fitted.

Teco Installation and Maintenance Manual
TEFC Squirrel Cage Induction Motors
Teco Electric and Machinery Company
Manual Number: IOM ~ TEFC Rev.01
7
3.2.3 Insulation resistance test should be performed before making high voltage
test.
a. Use 500VDC megger to measure insulation resistance.
i. Stator: Over 50MΩ between windings.
ii. Stator: Over 50MΩ between windings and earth.
b. High Voltage Test
i.This test can be undertaken only after the values of insulation resistance in
item 3.2.3 (a) are assured.
ii. The value of testing voltage is (1000 + 2E) X 0.8 where E: rated voltage.
3.2.4. Care should be taken to keep parts such as the fitting surface, key, shaft
extension and axial centre hole free of any foreign matter. Grease should
also be generously applied to stop rust.
3.2.5. The shaft should also be rotated by hand a few revolutions once per month.
3.2.6. If practical, a test run should be performed once every three months.
3.2.7. Clean the motor thoroughly, and replenish grease before the machine is put
back to operation.
3.2.8. The ventilation system should be covered to avoid the entry of foreign
matter or insects. It should be thoroughly cleaned before use.
3.2.9. Make sure the hoisting hook is correctly connected to eye bolts or lugs of
motors before hoisting.
Parts such as fan cowl, terminal boxes, etc. which have their
own lifting facilities can only carry their own weight.
They should not be used for lifting the entire motor.

Teco Installation and Maintenance Manual
TEFC Squirrel Cage Induction Motors
Teco Electric and Machinery Company
Manual Number: IOM ~ TEFC Rev.01
8
3.2.10. Points to note when hoisting:
a. Do not twist steel wires.
b. Make sure eye bolts have been firmly screwed in.
c. Keep the sling vertical when moving/lifting motor.
Fig. 1
Please keep the sling vertical when lifting / moving the motor.
Fig. 2
An accident could occur if the motor eyebolt/lifting hook is overloaded.
They are suitable for the motor weights only.
Do not lift motor and load combined with motor lifting hook.
Motor is fitted with lifting points (arrowed). These points are designed to lift
motor weight only.
Do not use other hooks or handles to lift motor.

Teco Installation and Maintenance Manual
TEFC Squirrel Cage Induction Motors
Teco Electric and Machinery Company
Manual Number: IOM ~ TEFC Rev.01
9
3.3. TRANSPORTATION
To keep the rotating parts of motor from moving, thus causing damage
during Transportation, they should be held securely as follows:
3.3.1. Motors fitted with a retaining plate/bracket to secure the shaft must have it
fitted during transportation. Please retain this device for future
transportation of the motor.
3.3.2. After receiving motor, remove all securing studs, nuts, etc. before putting
motor into operation. (Fig.3)
Fig 3
Shaft Locks are fitted as standard and these should be fitted during
installation and should only be removed once the pulleys and guards are
ready to be fitted. The motor must not be transported without the shaft lock
fitted, damage to bearings caused by shaft locks being removed or moisture
ingress whilst awaiting commissioning is not covered under motor warranty.

Teco Installation and Maintenance Manual
TEFC Squirrel Cage Induction Motors
Teco Electric and Machinery Company
Manual Number: IOM ~ TEFC Rev.01
10
3.4. INSTALLATION.
3.4.1. Site conditions for motor installation:
Standard site conditions for installation of motors are as follows:
a. Ambient temperature: -200C~400C.
b. Humidity: Relative humidity below 90% RH for totally enclosed type.
c. Elevation: Below 1000 metres.
d. Should the installation be in an industrial zone, it should be free of explosive
gases and liquids.
e. Foundation should be strong so as not to induce vibration.
3.4.2. Ventilation and Space.
a. Installation should be well ventilated.
b. The area should be large enough to facilitate heat dissipation and
maintenance.
3.4.3. Foundation.
Use rigid and solid sole plate or common bed as the foundation.
3.5. MOUNTING.
3.5.1. An adequate motor support (which is the responsibility of others) is very
important. It must have sufficient rigidity to maintain alignment between
the motor and its driven load. Inadequate or improperly designed motor
supporting structures can lead to serious vibration and alignment problems.
3.6. COUPLING & ALIGNMENT.
Two pole motors and motors larger than Frame 315M must not be coupled to
the driven equipment by means other than direct connection.
Please refer to TECO if belt connection is to be used.