7 - Maintenance
04.05
26 ENGLISH
Siemens AG 7VV3003-8TA74
SICROWBAR 7VV3003 DC-Surge Suppressor Operating Instructions
7 Maintenance
WARNING
Hazardous voltage are present in this electrical equipment during operation.
Non-observance of the safety instructions can result in death, severe personal injury or
substantial property damage.
When carrying out maintenance work on this device, please read all safety instructions
included in this section and attached to the product itself.
•
Maintenance work on the converter may be carried out only by qualified personnel who
are thoroughly familiar with all safety notices in this manual and with the installation,
operating and maintenance instructions.
•
Before carrying out visual checks and maintenance work, ensure that the AC power
supply is disconnected and locked out and that the converter is grounded. Before the AC
supply is disconnected, both converters and motors are at hazardous voltage levels. Even
when the converter contactor is open, hazardous voltages are still present.
•
Before starting work, make sure all devices are safely isolated from supply (see Section
1).
Only spare parts authorized by the manufacturer may be used.
The converter must be thoroughly protected against the ingress of dirt so as to prevent voltage
flashovers and this irreparable damage. Dust and foreign bodies, and especially contamination
drawn in through the cooling air flow, must be carefully removed at regular intervals depending on
the degree of pollution, but at least once every 12 months. The converter must be cleaned with dry,
compressed air, max. 1 bar, or with a vacuum cleaner.
7.1
Replacement of components
WARNING
PCBs may be replaced only by properly qualified personnel.
PCBs must not be removed or inserted when the power supply is connected.
Non-observance of the safety instructions can result in death, severe personal injury or
substantial property damage.
CAUTION
PCBs contains electrostatically sensitive devices. Before touching a PCB, the person carrying
out the work must himself be electrostatically discharged. The simplest way of doing this is to
touch an electrically conductive earthed object, e.g. socket outlet earth contact.
Summary of Contents for 7VV3003-5AG32
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