11
Warning
Only expert persons should be
entrusted with work on power
installations. All covers which are
designed to prevent active or rotating
parts from being touched, or which are
necessary to ensure correct air guidance
and thus effective cooling, must be
installed prior to commissioning.
Before commissioning, check that:
- The minimum insulation resistances are
adhered to.
- The rotor turns freely without rubbing.
- The motor is properly assembled and
aligned.
- The transmission elements are correctly
adjusted (e.g. belt tension) and the
transmission element is suitable for the
given operating conditions.
- All electrical connections, mounting
screws and connecting elements are
properly tted and tightened.
- All protective conductors are properly
installed.
- Any auxiliaries that may be tted
(brakes, speedometer, separate fan) are
in working order.
- Touch protection guards are installed
around moving and live parts.
- The maximum speed n
max
is not
exceeded, especially for motors with
variable speed drive.
NOTE: The maximum speed n
max
is the
highest operating speed permitted for
short periods. It should be kept in mind
that motor noise and vibration are worse at
this speed, and bearing life is reduced.
(For details refer catalogue or contact
nearest Siemens ofce).
Caution
After motor installation, the brake, if
tted, should be checked for proper
functioning.
It is not possible to formulate a
complete checklist for all operations
and applications. Other checks may
also be necessary!
For motors tted with brakes, also
refer to manual of brake enclosed
with the motor.
For motors tted with encoder, also
refer to manual of encoder enclosed
with the motor.