Maintenance - Siemens SIMOREG DC-MASTER Operating Instructions Manual

Maintenance

8 Maintenance
WARNING
When electrical equipment is operated, some of the components will be at hazardous voltage
levels.
Failure to handle/operate the equipment properly can result in death or severe bodily injury as
well as substantial property damage.
When performing maintenance on this unit, you should therefore observe all information
provided in this chapter as well as any notices attached to the product itself.
• Only qualified personnel who are familiar with all the safety instructions in this description, as
well as the installation, operating, and maintenance instructions, should carry out
maintenance work on this unit.
• Before carrying out visual inspections and maintenance work, it must be ensured that the unit
is disconnected from the AC power supply, locked out so that the power supply cannot be
reconnected, and grounded. Before they are shut down, both the converter unit and the motor
are at dangerous voltage levels. A hazardous voltage is present even if the converter unit
contactor is open.
• Even after being disconnected from the power supply, the snubber capacitors in the basic
converter unit can still be at a hazardous voltage. For this reason, the unit should not be
opened until an adequate period of time has elapsed.
• Before commencing any work, ensure that the unit is in a no-voltage condition
(see Chapter 1)
Only spare parts approved by the manufacturer may be used.
The converter unit must be well protected against pollution in order to prevent voltage flashovers
and, therefore, destruction. Dust and foreign bodies, which are drawn in by the cooling-air flow in
particular, must be thoroughly removed at specific intervals; this depends on the rate of
accumulation of dirt, but should be carried out at least every 12 months. The unit should be
cleaned using dry compressed air, max. 1 bar, or using a vacuum cleaner.
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ENGLISH
SIMOREG DC-MASTER Converter Commutation Protector
12.2010
Siemens AG 6RX1700-0DD74
Operating Instructions