11.98
Maintenance
Siemens AG 6SE7087-6AC85-0AA0
ENGLISH
8-1
Common Rectifier Operating instructions
8 Maintenance
WARNING
The units SIMOVERT Master Drives are operated with high voltages.
All work on the unit must be carried out in agreement with the national electrical regulations
(in Germany: VBG 4).
Maintenance and repair work must only be carried out by qualified personnel.
Use must only be made ofd spare parts approved by the manufacturer.
It is imperative to observe the prescribed maintenance intervals and the repair and
replacement instructions.
Owing to the dc link capacitors, hazardous voltages still prevail in the unit up to 5 min. after
deenergisation (power terminal and electronic power supply). This is why it is only
permitted to open the unit after a corresponding waiting time.
The power and control terminals may still be live even in the even of motor standstill.
If work on the activated unit is necessary:
♦
do not touch any live parts.
♦
use only proper measuring equipment and protective work clothing.
♦
stand or sit on an unearthed and isolated surface that does justice to ESD
requirements.
Non-observance of warning notices can result in death, severe personal injury or
considerable property damage.
You should know the order and factory numbers of your unit when consulting the service department. You will
find these numbers and other important data on the rating plate of the unit.
8.1 Maintenance
recommendations
Dust deposits inside the unit must be removed at least once annually by qualified personnel. If required,
cleaning must take place at shorter intervals. The unit must be cleaned with a brush and vacuum cleaner and in
inaccessible locations with dust-free dry compressed air at a maximum of 1 bar.
The DC-24V fan is designed for an operating life of 35 000 hours at an ambient temperature of 40 °C. It must be
replaced in good time to maintain the availability of the unit.
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