DC motor - Siemens, s.r.o.

3.3 Aligning
Instructions relevant for safety
Installation and Assembly
Detailed specialist know-how is required about the necessary measures in order to
correctly align and securely mount the equipment, e.g. for
•= preparing the foundation,
•= selecting and mounting the coupling,
•= measuring the concentricity and axial eccentricity tolerances,
•= axial and horizontal positioning.
If personnel are not familiar with the necessary measures and working steps, we
recommend that the services of the local SIEMENS service center are used.
Vertical and horizontal position
3.4 Mounting
Mounting
The following measures are required in order to compensate any radial offset at
the coupling and to horizontally adjust the electric motor with respect to the driven
load:
•= Place shims under the motor feet to position it vertically and to avoid
stressing/distorting the machines. The number of shims should be kept as low
as possible i.e. stack as few as possible.
•= To horizontally position the machine, push it laterally on the foundation and
ensure that the axial position is maintained.
•= When positioning the motor, ensure that there is a uniform axial gap around the
coupling.
[ID 526]
Prerequisites for smooth, vibration-free running:
•= Stable foundation design or stable machine suspension if flange-mounted.
•= Precise alignment of the motor.
•= Correct balancing of the parts to be mounted on the shaft end.
To securely mount the motor and transfer the drive torque, use motor mounting
bolts with the required strength class in accordance with ISO 898-1, e.g. 10.9.
Note on different designs
In the case of motors with the shaft end facing upwards, it must be ensured that no
water is able to enter the top bearing. Motors that are attached by their mounting
feet to the wall because of their design must be supported from below by a wall
SIEMENS AG T61160347010001 (DMHO V9)
Operating instructions 1GG6286-0NA4.-1VV1-Z 3-7