BA 9137 en 12/2015
6.
Fitting
Observe the instructions in section 3. "Safety instructions"!
DANGER
Explosion hazard
Danger to life from ignition of a present explosive atmosphere is possible when carrying out assembly
works on the gear unit.
During the assembly of the gear unit, it must be ensured that no explosive atmosphere is present.
6.1
General assembly information
When transporting the gear unit, observe the notes in section 4. "Transport and storage".
Assembly work on the mill must be performed with great care by authorised, trained and qualified
personnel. Siemens is not liable/does not extend a warranty for damages caused by incorrect
implementation.
Adequate lifting gear must be available before beginning the fitting work.
NOTICE
Property damage
Damage to the gear unit is possible.
For gear units, which are operated together with electrical machines that generate power or that are
supplied with power (e. g. motors, generators, etc.), it must be ensured that
no
current can flow through
the gear unit. The flow of current can lead to irreparable damages on rolling bearings and gear teeth.
Flow of current can arise, e. g. through short circuits, flash arcs, conductive dust layers, etc.
Suitable measures may be:
– Use of isolators
– Earth the gear unit professionally
DANGER
Explosion hazard
Danger to life is possible from overheating of the gear unit due to external influences and thereby
ignition of explosive atmosphere.
Because it must be prevented that the gear unit heats up during operation through external influences
such as direct sunlight or other sources of heat, suitable measures must be taken to avert such heating
up.
Suitable measures may be:
– a sunshade roof
– an additional cooling unit
– a temperature monitoring device in the oil sump with a shut-off function.
A heat concentration must be avoided.
The ambient temperature range indicated on the rating plate must be adhered to.
Note
Any heat concentration must be prevented when using a sunshade roof.
When using a temperature monitoring device, a warning signal must be emitted when the maximum
permitted oil sump temperature is reached. If the maximum permitted oil sump temperature is
exceeded, the drive must be shut off.
Such a shut-off may entail a standstill of operations.
