Siemens induction motors- generators cgii Manuel D’Utilisation

 

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Lifting devices are provided for handling only.  An 
experienced rigger should be used to install motors. 
 
To avoid damage, the use of spreader bars is recommended 
on other than single point lifts.  Lifting devices are provided to 
facilitate handling with shackles and cables.  Avoid pounding 
or bumping shaft, coupling or bearing parts, as shocks may 
damage bearings. 
 
NOTE WEIGHT BEFORE LIFTING.  The weight is indicated 
on the outline drawing.  Apply tension gradually to cables.  
Do not jerk or attempt to move the unit suddenly. 
 

 

If the equipment is not to be installed and operated soon after 
arrival, store it in a clean, dry, well- ventilated place, free from 
vibration and rapid or wide variations in temperature.  Rotate 
the shaft a minimum of 10 complete turns by hand each 
month to coat the bearings with lubricant  which will retard 
oxidation or corrosion, and prevent possible false brinelling.  
If drain plugs are provided in enclosed motors, they must be 
removed periodically to drain any water accumulation from 
the motor.  Consider a unit in storage when: 
 
1.  It has been delivered to the job site and is awaiting 

installation. 

2.  It has been installed but operation is delayed over 30 

days pending completion of plant construction. 

3.  There are long (30 day) periods between operating 

cycles. 

4. 

The plant (or department) is shut down for 30 days.

 

 

Storage requirements vary, depending on the length of 
storage and the climate. For storage periods of three 
months or longer or climate variations, consult Siemens 
Storage Recommendations ANIM-03114. Storage 
maintenance is to be documented for warranty 
information. 

 

 

The motor type designation consists of a basic letter or 
letters indicating the motor enclosure type to which other 
letters may be added denoting modifications. 

 

CG or NCG 

Open Drip Proof or Weather 

Protected Type I 

CGII or NCGII 

Weather Protected Type II 

 

Type CG, NCG - 500 Frame 
Ventilating air enters through the louvered openings in 
bearing housings on both ends of the motor. Non-metallic air 
baffles direct air to the rotor fans and through the rotor core. 
The air is circulated around the stator coil ends, into the air 
gap, and through the vent ducts in the rotor and stator cores. 
The air is exhausted out of the motor through the louvered 
openings on both sides of the motor. Refer to motor outline 
drawing for specific air intake and exhaust locations. 
 
Type CG, – 580, 680, & 800 Frame and 
Type CGII, NCGII – 500, 580, 680, & 800 Frame 
Ventilating air enters through both sides of the top enclosure. 
Non-metallic air baffles direct air to the rotor fans and through 
the rotor core. The air is circulated around the stator coil 
ends, into the air gap, and through the vent ducts in the rotor 
and stator cores. The air is exhausted out of the motor 
through the openings on both sides of the motor. Refer to 
motor outline drawing for specific air intake and exhaust 
locations. 
 
Type CG - 1120 Frame 
Ventilating air enters through one end of the top cover. A 
single rotor fan pulls the air through the rotor and stator 
cores. The air is circulated around the stator coil ends, into 
the air gap, and through the vent ducts in the rotor and stator 
cores. The air is exhausted out of the motor through the top 
cover on both sides of the motor. Refer to motor outline 
drawing for specific air intake and exhaust locations. 
 
Type CGII - 1120 Frame 
Ventilating air enters through both sides of the top cover. A 
single rotor fan pulls the air through the rotor and stator core. 
The air is circulated around the stator coil ends, into the air 
gap, and through the vent ducts in the rotor and stator cores. 
The air is exhausted out of the motor through the openings 
on both sides of the motor. Refer to motor outline drawing for 
specific air intake and exhaust locations.