Maintenance; Safety Instructions For Maintenance - Siemens SINAMICS SL150 Operating Instructions Manual

Maintenance

9.1

Safety instructions for maintenance

When carrying out any work, carefully observe the information provided in Chapter "Safety
instructions (Page 13)".
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
Danger as a result of high voltages from external supplies
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
Danger due to high voltages of the snubber circuit capacitors
The snubber circuit capacitors are not equipped with discharge resistors. If the connection to
the capacitor is interrupted, high voltages of up to several 1000 V can result, and cause an
electric shock.
This can result in death, severe injuries and significant material damage.
● You must always handle the capacitors as if they are charged.
● Discharge the snubber circuit capacitors.
● Short-circuit the snubber circuit capacitors before commencing any work.
SINAMICS SL150 6SL38600UL432AA0Z
Operating Instructions Rev.201910281433 EXAMPLE
stated in the technical data.
repair work.
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