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Maintenance
9.1
Safety instructions for maintenance
When carrying out any work, carefully observe the information provided in Chapter "Safety
instructions (Page 15)".
Danger due to improper maintenance and repairs
Improper repairs can result in death and serious physical injury.
● Only qualified maintenance and installation personnel may perform repairs.
Danger due to defective seals
When working on the device, seals at the doors, roof panels as well as front, rear and side
panels can be damaged. Operation with defective seals can result in death, serious injury or
material damage.
● Replace the defective seals before commissioning. Observe the environmental conditions
Electric shock caused by externally connected high voltages
Magnetizing and demagnetizing equipment that is fed from an external voltage source can
result in high voltages. This voltage can result in death or serious injury.
● Ensure that no voltage from external feeds exists before commencing maintenance and
Skin burns when touching the roof panel
Certain components, such as busbars and resistors etc., can become very hot in operation.
Until the heat has been fully dissipated, the roof panel in the front area can still be very hot even
after the device has been shut down.
Touching hot surfaces can cause burns to the skin.
● Do not touch the roof panel even after the device has been shut down.
● Always take the appropriate precautions before touching any parts and components.
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.
SINAMICS SM150 6SL3845-7NN46-7AA2
Operating Instructions Rev.201910281345 EXAMPLE
stated in the technical data.
repair work.
9
135
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