Transport, installation and assembly
3.5 Mounting
A5E01083943A AB
Siemens AG Operating Instructions 2.02 1FW4
45
3.5 Mounting
Overview
Precondition for smooth, vibration-free operation:
● Stable foundation design as per DIN 4024
● Precision alignment of the motor
● Correct balancing of parts to be fitted to the shaft end.
In addition, vibration speeds must meet the requirements of DIN ISO 10816-3.
NOTICE
Natural frequencies of the system
DIN 4024 must be taken into account when designing the motor foundation in respect of the
natural frequencies of the foundation (natural frequencies of the foundation after installation
of the machine set). [ID 815.01]
3.6 Insulated bearings
Bridging the bearing insulation
The 1FW4 motors are fitted with electrically insulated bearings on the NDE.
CAUTION
Bearing damages
The bearing insulation must not be bridged. Damage may be caused to the bearings if
there is a flow of current. [ID 840.01]
3.7 Connecting the cooling water supply for water-cooled motors
Connection
The size of the connecting threads is described in this documentation in Chapter "Technical
Design". Seen from the shaft end, a water connection for the 1FW4 motors is possible from
the right and from the left.
1. For the pipes, select materials with the required chemical composition in accordance with
the water conditions. Also consider the pressure load and compatibility with the materials
from which the cooler is made.
2. Route and support the water pipes so that the connecting flanges are not exposed to
excessive stress or strain or vibration loads.
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