Siemens induction motors- generators cgii User Manual

 

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Hazardous voltage. 
Will cause death, serious injury, electrocution 
or property damage. 
Disconnect all power before working on this 
equipment. 

 
These instructions present general recommendations for 
installation, operation and maintenance of induction motors 
built at the Norwood plant.  If additional information is 
required, contact Siemens 

Industry. 

 

See your sales contract for warranty coverage. 

 

Documentation of storage maintenance, alignment 
and regreasing may be required for certain warranty 
considerations. 
 

Receiving 

Motors are shipped in first class condition.  They have been 
inspected and are skidded to prevent damage from ordinary 
handling during shipment. 
 
Inspect new motors for shipping invoice.  Make the 
examination before removing from cars or trucks.  If damage 
or indication of rough handling is evident, file a claim with 
the carrier at once, and notify your Siemens sales 
representative. 
 
Remove only the shipping invoice.  Do not remove tags 
pertaining to lubrication, operation and storage instructions.  
Read and follow all instructions to insure that no damage to 
motor bearings, (due to condensation) and motor windings 
occurs during storage. 
 
Use care in handling.  Dropping the motor or otherwise 
imposing shock loads can cause unseen and undetected 
damage to bearings.  This damage such as false brinelling 
of the races of anti-friction bearings can result in early 
bearing failure. 
 
If supplied, energize space heaters to help prevent 
condensation within the motor enclosure. 
 
Motors having sleeve bearings or oil lubricated antifriction 
bearings are shipped WITHOUT OIL in the bearing 
reservoir.  These bearings and journal surfaces are 
protected during shipment by a temporary film of rust 
inhibiting oil or, when a motor is supplied specifically with 
“provisions for oil mist

 lubrication” 

(oil supply system 

furnished by the user), the motor is shipped from the factory 
with grease in the bearings. 
 

 
When receiving a motor with sleeve bearings: 
1.  Remove shaft blocking materials. 
2.  Visually inspect bearing condition through sight glass 

and bearing drain opening. 

3.  Check for moisture accumulation.  Remove any traces 

of oxidation before putting the motor into service. 

4.  Fill bearing reservoirs to normal level with a high grade 

industrial lubricating oil.  See Maintenance Section of 
this instruction book to determine proper oil level. 

5.  Rotate the shaft a minimum of 10 complete turns by 

hand to distribute oil over bearing parts.  Make sure the 
oil rings in each bearing rotate freely. 

 
When receiving a motor with grease lubricated anti-
friction bearings: 
Motors having grease lubricated antifriction bearings are 
shipped with the bearings already lubricated and ready for 
operation. 
 
If the elapsed time from the time of shipment to the time in 
which the unit is to be started is in excess of three (3) 
months, regrease per the lubrication plate mounted on the 
motor. 
 
When receiving a motor with oil mist lubricated anti-
friction bearings: 
1.  Be sure that the motor is not stored outdoors. 
2.  Be sure that the oil mist lubrication is connected and 

operating before starting the motor. 

3.  The oil mist lubrication should be in operation within two 

weeks after the motor is received from the factory. 

 
When receiving a motor with “provisions for oil mist 
lubrication”: 
1.  Leave the grease in the bearings if the motor is to be 

stored. 

2.  Before operating the motor with oil mist lubrication, 

disassemble the motor, and clean the grease from 
bearings, end caps, and the bearing housing cavities 
with a suitable solvent. 

 

Heavy equipment. 
Improper handling may cause death, serious injury or property 
damage. 
Check lifting devices before lifting. Use proper slings, chains 
and spreaders. 

 

Note any warning plates on motor and follow instructions on 
each plate.