NORD Drivesystems BU0240 - Manual (Page 26)

NORDAC SK 200E Manual
26 BU 0240 GB
4.2 ATEX Zone 22 for SK 2x5E
General information
With appropriate modification, the NORDAC SK 2x5E frequency inverter can be used in explosion hazard
areas. For this it is important that all the safety information in the operating instructions is strictly complied
with for the prevention of personal injury and material damage. This is essential to prevent injury and
damage.
Qualified personnel
Qualified personnel must be used to carry out work involving the transport, assembly, installation,
commissioning and maintenance. Qualified personnel are persons who due to their training, experience and
instruction, and their knowledge of the relevant standards, accident prevention regulations and operating
conditions are authorised to carry out the necessary activities for starting up the frequency inverter. This
also includes knowledge of first aid measures and the local emergency services.
ATTENTION
All work must only be carried out with the power to the system switched off.
If the frequency inverter is connected to a motor and a gear unit, the EX labelling of the motor
and the gear unit must also be observed.
Safety information
The increased danger in areas with inflammable dust demands the strict observation of the general safety
and commissioning information. The drive unit must comply with the specifications in Planning Guideline
No. 6052101
. Explosive concentrations of dust may cause explosions if ignited by hot or sparking objects.
Such explosions may cause serious or fatal injuries to persons or severe material damage.
It is essential that the person responsible for the use of motors and frequency inverters in explosion hazard
areas is trained in their correct use.
ATTENTION
Before opening the frequency inverter for the connection of electric cables or other work, the
mains voltage must always be switched off and secured against switching on again!
Temperatures may occur within the frequency inverter and the motor, which are higher than
the maximum permissible surface temperature of the housing. The frequency inverter may
therefore not be opened or removed from the motor in an atmosphere of explosive dust!
Impermissibly heavy dust deposits must not be permitted, as these impair the cooling of the
frequency inverter!
All cable glands which are not used, must be closed with blind screw plugs which are
approved for explosion hazard areas.
Only the original seals may be used.
The protective film covering the diagnostic LEDs in TU4 modules must not be damaged.
It must be ensured that the plastic housing cover cannot be electrostatically charged by
streams of particles caused by the fan.
Repairs may only be carried out by Getriebebau NORD.