Siemens SINAMICS MV 9LD4110-7EX70-1AA0 Operating Instructions Manual page 117

Injury caused by rotating crank handle
If the internal disconnector with attached crank handle is electrically operated, then you can be
injured by the handle as it quickly rotates.
• The crank handle of the internal disconnector is intended as tool for maintenance purposes.
Only use the crank handle if the auxiliary supply or the disconnector motor fails.
• Open the motor circuit breaker of the disconnector.
Damage due to non-authorized spare parts
Using non-approved spare parts can affect the function of the equipment and damage it. Third-
party spare parts and unapproved spare parts may not meet the requirements.
• Only use spare parts that have been approved by the manufacturer.
Damage caused by foreign bodies in the device
If foreign bodies are left in the device after installation and maintenance work, this can cause
damage when the device is switched on.
• Before switching on, carefully check that there are no foreign objects that have been left
behind. Remove any foreign bodies.
Damage due to contamination and dirt
Contamination and dirt can damage the device.
• Visually inspect the equipment at least once per year. For more information, please refer to
the section "Visual inspections".
• Dust deposits inside the cabinet unit must be removed at regular intervals (or at least once
a year) by qualified personnel in line with the relevant safety regulations.
Note
The actual intervals at which maintenance procedures are to be performed depend on the
environmental and operating conditions. Define maintenance intervals that reflect your plant-
specific environmental and operating conditions and meet your availability requirements. When
doing so, take the prescribed maintenance intervals into consideration, as well as the
instructions for repairing and replacing installed components.
Note
Siemens offers its customers support in the form of a service contract. For further details,
contact your regional office or sales office.
3rd Party LCI Control Upgrade
Operating Instructions, 02/2022, A5E31872818
9.1 Safety instructions for maintenance
Maintenance
115