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BA 5030 en 02/2013
7.2.4 Gear unit with auxiliary drive
Before startup, check whether the backstop and the overrunning clutch can be turned
manually in the freewheeling direction without exerting undue force.
Observe the directionofrotation arrows on the housing.
The backstop is in freewheeling operation, when the drive shaft of the main gear unit is rotated
in operating direction of rotation.
Rotation in the other direction of rotation is prevented by the blocking action of the backstop.
The overrunning clutch is in freewheeling operation, when the motor shaft of the auxiliary
drive is rotated in opposed operating direction of rotation.
When rotating in the operating direction of rotation, the blocking action of the overrunning
clutch (carrier operation) becomes effective. Coupling and, thus, rotation of the output shaft of
the main gear unit in operating direction of rotation takes place.
To avoid damaging the backstop or the gear unit, the motor must not be run adversely
to the stop direction of the gear unit.
Observe the notice fixed to the gear unit.
Before connecting the main and auxiliary gear motor, the respective rotating field of
the threephase supply network should be determined by means of a phasesequence
indicator and both motors should be connected according to the predetermined
direction of rotation.
The main motor and the motor of the auxiliary drive should be interlocked electrically in such
a manner that only one of the two motors can be switched on at the same time.
Prior to startup, the disabling function of the speed monitoring device should be checked.
Startup can take place after the oil quantity specified on the respective plate has been filled in
through the oil filler plug of the backstop and at lubricating point 1 of the intermediate flange.
Always use oil of the same type and viscosity as for the gear unit.
For details regarding the auxiliary gear unit please see the Special operating instructions.
7.2.5 Temperature measurement
During first startup and after maintenance work, the oil sump temperature must be
measured during correct use (maximum machine performance) after appropriate
running in.
The maximum permissible oil sump temperature is 90 °C.
At higher temperatures the gear unit must be shut down immediately and Siemens
customer service consulted.
7.2.6 Bearing monitoring (vibration measurement)
If the necessary measures have been made for vibration measurement as bearing
monitoring (see item 5.13), vibration measurements must be taken in order to obtain
initial values and/or standard values for the diagnosis. These measurements must be
recorded and filed.