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BA 9142 en 02/2015
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
• Potential equalisation must be provided in accordance with the applicable regulations and/or
guidelines!
If no threaded holes for earth connection are available on the gear unit, other appropriate measures
must be taken. This work must always be done by trained electricians.
NOTICE
Property damage
Damage to the gear unit is possible.
Immediately stop the gear unit by turning off the drive unit when inexplicable changes are noticed
during the operation, such as a significantly increased operating temperature or changed sounds of
the gear unit.
DANGER
Danger to life from rotating and/or moving parts
Risk of being gripped or drawn in by rotating and/or moving parts.
Rotating and/or movable drive parts must be provided with suitable safeguards to prevent contact.
Note
When the gear unit is incorporated in plant or machinery, the manufacturer of such plant or machinery
must ensure that the requirements, notes and descriptions contained in these instructions are
incorporated in its own instructions.
• Removed safeguards must be refitted prior to starting up.
• Notices attached to the gear unit, such as rating plate and direction arrow, must always be observed.
They must be kept free from dirt and paint at all times. Missing plates must be replaced.
• Screws which have been damaged during assembly or disassembly work must be replaced with new
screws of the same strength class and type.
• Spare parts must be obtained from Siemens (see section 11. "Spare parts, customer service").
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