Siemens 580 Benutzerhandbuch

 

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For motors built in the frame sizes covered by this 
manual, the letter dimensions have the same 
definitions as established NEMA standards. 

 

Established dimensions for these frames may be found 
on catalog sheets or certified drawings. 
 

Damp Location. 

Can cause property damage if equipment is operated 
intermittently. 

Use space heaters to prevent dampness. Grease 
machine fits when unit is reassembled to prevent 
corrosion. 

 

Select a location for the motor and driven unit that will: 
1.  Be clean, dry, well ventilated, properly drained, and 

provide accessibility for inspection, lubrication and 
maintenance. 

2.  Provide adequate space for motor removal without 

shifting the driven unit. 

3.  Permit the motor to safely deliver adequate power.  

Temperature rise of a standard motor is based on 
operation at an altitude not higher than 3,300 feet 
above sea level. 

4.  Avoid condensation of moisture in bearings and on 

windings.  Motors should not be stored or operated 
in areas subject to rapid temperature changes 
unless motors are energized or protected with 
space heaters. 

 

Concrete (reinforced as required) makes the best 
foundation, particularly for large motors and driven 
units.  In sufficient mass it provides rigid support that 
minimizes deflection and vibration.  It may be located 
on soil, structural steel, or building floors provided the 
total weight (motor, driven unit, foundation) does not 
exceed the allowable bearing load of the support. 
 
Allowable bearing loads of structural steel and floors 
can be obtained from engineering handbooks.  Building 
codes of local communities give the recommended 
allowable bearing loads for different types of soil.  For 
rough calculation the foundation should be 
approximately 2-1/2 times total unit weight. 

 
Before pouring, locate foundation bolts by use of 
template frame and provide secure anchorage (not 
rigid).  It is recommended that a fabricated steel base 
be used between motor feet and foundation.  See 
certified drawings of motor, base, and driven unit for 
exact location of foundation bolts.  Allow for grouting 
base when pouring.  Cast the base footpads level and 
in the same plane. 
 

Mount the motor base (if used) on foundation or other 
support.  Shim as required to level.  Use laser or spirit  
level (check two directions at 90

o

) to insure motor feet 

will be in one plane (base not warped) when base  
bolts are tightened.  Set motor on the base, install nuts 
and tighten. 
DO NOT TIGHTEN UNTIL AFTER ALIGNMENT. 
 

Experience has shown that any base-mounted 
assemblies of motor and driven units temporarily aligned 
at the factory may twist during shipment.  Therefore, 
alignment must be checked after mounting.  
Realignment is to be documented for warranty 
information. 

Sleeve bearings cannot withstand externally generated 
axial thrust.  Antifriction bearings are normally 
designed to handle a minimum thrust.  As the motor 
and driven equipment get hot they may expand 
towards each other and with the wrong coupling this 
could produce an axial force.  Therefore, the selection 
of coupling is of extreme importance.  If properly 
installed, the following types of couplings are 
considered to be free from the development of axial 
thrust and may be used: 
 
1.  Laminated Metal Disk Type 
2.  Rubber Biscuit Type (Designed for the Speed) 
 
Limited end float models of the following types are 
available from several coupling manufacturers and 
may be used by selecting the proper end float (See 
“End Float – Sleeve Bearings” under Bearing 
Replacement) 
 
3.  Pin and Bushing Type 
4. Gear 

Type