Bartec Varnost BM 4KTC71 Manual Download

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INSTALLATION GUIDELINES

the PTB mark of conformity (Lab. 3.43) completes the protective system for the maintenance of the
temperature class.
Electric  motors  with  two  velocities  (two  separate  windings  or  one  winding  in  Dahlander  coupling)
must have a separate protection for each speed.
The housing of the electric motor must be connected to the protective conductor, and earthed. The
terminal box contains the screw for the connection of the conductor, the earthing screw sits on the
stator housing.

If the electric motor is supplied via the frequency converter, please make sure that the settings on
the converter correspond to the data indicated on the supplementary label. The electric motor must
be  double-protected,  i.e.  with  the  motor  circuit-breaker  and  the  temperature  protection.  The
shutdown  device  connected  to  the  temperature  protection  must  be  in  the  range  of  2k



<Ro<4k



with Ro representing the shutdown resistance. The shutdown device must be certified.

7. MAINTENANCE

Electric motors have a robust structure and need no particular maintenance.

The  motor  must  be  cleaned  in  regular  intervals  (depending  on  the  environment),  especially  the
entry openings on the fan as to guarantee a sufficient air flow for the cooling system.

Electric motors feature closed and prelubricated bearings. The life span of the bearings is 20000
service hours for 2 pol electric motors (ns=3000 min

-1

) under normal operating conditions or 40000

service hours for 4,6,8 and multiple-pol motors.

Regular  inspections  and  control  measurements  carried  out  by  qualified  personel  are  preffered  to
reduce possible damages and standstills.

Each  deviation  from  the  nominal  values  (such  as  higher  load  current,  increased  temperatures,
vibrations, unusual noise or smell, reactions of protective devices) is to be understood as signal of
possible  damage!  To  prevent  consequential  damages  on  machines  or  people,  please  inform  the
person responsible immediately on the appearance of such deviations.

8. REPAIRS

ELECTRIC MOTORS FOR EXPLOSIVE AREAS MAY BE REPAIRED EXCLUSIVELY BY THE
MANUFACTURER OR OUR AUTHORIZED REPRESENTATIVE.

THOSE WHO DISASSEMBLE AND REPAIR THE EX MACHINES MUST BE HIGHLY QUALIFIED
AND DISPOSE OF ADDITIONAL KNOWLEDGE CONCERNING EXPLOSION PROTECTION.

IMPORTANT:
Repaire according of flameproof gaps and joints according to table 2 of EN 60079-1 is not
allowed! Please conntact producer!

Special attention should be paid that no damaged has occured during disassembly on flameproof
gaps and joints.

Before assembly of electromotor all flameproof gaps and joints needs to be cleaned and greased
with grease type FOR PD-2 (Sestral MI PD LL/2A) or Renolit RHF-1 Fuchs.

If it becomes clear during repairs that the »explosion-proof enclosure« no longer corresponds to
the requirements on the explosion protection and specified in the certification, all markings for
explosion protection must be removed from this motor.