SPARE PARTS
When ordering spare parts, please specify
the full type designation and product code as
stated on the motor nameplate. Please also
inform the motor serial number stated on the
nameplate.
MOTORS FOR HAZARDOUS
LOCATIONS
Besides the recommendations given
previously, these ones must be also followed:
THE SPECIFICATION OF THE MOTOR
INSTALLATION PLACE IS FOR
CUSTOMER’S RESPONSIBILITY,
WHO WILL ALSO DETERMINE THE
ENVIRONMENT CHARACTERISTICS.
Motors for hazardous locations are
manufactured according to specific standards
for such environments and they are certified by
worldwide certifying entities.
1 - Installation
The complete installation must follow
procedures given by the local legislation in effect.
THE INSTALLATION OF HAZARDOUS
LOCATION MOTORS MUST BE
CARRIED OUT BY SKILLED PEOPLE,
AND THE THERMAL PROTECTION
MUST BE ALWAYS INSTALLED,
EITHER INSIDE OR OUTSIDE THE
MOTOR, OPERATING AT THE RATED
CURRENT.
2 - Maintenance
Maintenance must be carried out by repair
shops authorized by WEG.
Repair shops and people without Weg’s
authorization who will perform any service on
hazardous location motors will be fully
responsible for such service as well as for any
consequential damage.
Note:Note:
Note:Note:
Note:
üThe ZZ bearings from 6201 to 6307 do not
require relubrication as its life time is about
20,000 hours.
üTables 1 and 2 are intended for the lubrication
period under bearing temperature of 70°C (for
bearings up to 6312 and NU 312) and
temperature of 85°C (for bearings 6314 and NU
314 and larger).
ü For each 15°C of temperature rise, the
relubrication period is reduced by half.
üThe relubrication periods given above are
for those cases applying Polyrex
®
EM grease.
ü When motors are used on the vertical
position, their relubrication interval is reduced
by half if compared to horizontal position
motors.
Notes:Notes:
Notes:Notes:
Notes:
üAlthough Polyrex
®
EM is compatible with types
of grease given above, we do not recommended
to mix it with any other greases.
ü If you intend to use a type of grease different
than those recommended above , first contact
WEG.
üOn applications (with high or low temperatures,
speed variation, etc), the type of grease and
relubrification interval are given on an additional
nameplate attached to the motor.
THE USE OF STANDARD MOTORS
IN SPECIFIC AREAS OR SPECIAL
APPLICATIONS MUST BE DONE BY
CONSULT TO THE GREASE
MANUFACTURER OR WEG
Compatibility of PolyrexCompatibility of Polyrex
Compatibility of PolyrexCompatibility of Polyrex
Compatibility of Polyrex
®®
®®
®
EM grease with EM grease with
EM grease with EM grease with
EM grease with
other types of grease:other types of grease:
other types of grease:other types of grease:
other types of grease:
Containing polyurea thickener and mineral
oil, the Polyrex
®
EM grease is compatible with
other types of grease that contain:
üLithium base or complex of lithium or polyurea
and highly refined mineral oil.
üInhibitor additive against corrosion, rust and
anti-oxidant additive.
WARNING:
EXCESS OF GREACE CAN CAUSE
BEARNING OVERHEATING
RESULTING IN COMPLETE
DAMARGE.
WE RECOMENDED TO USE BALL
BEARINGS FOR MOTORS DIRECTLY
COUPLED TO THE LOAD.
Disassembly and assembly must be done
by qualified personnel using only suitable tools
and appropriated methods.
DISASSEMBLY AND ASSEMBLY
The stator grips must be applied over the
side face of the inner ring to be disassembled or
over an adjacent part.
It is essential that bearings assembly be
done under cleanning conditions to ensure
good operation and to avoid damages. New
bearings shall only be taken out from their cases
when assembling them.
Before installing a new bearing it is
required to check the shaft fitting for any sharp
edge or strike signals.
For bearing assembly warm their inner
parts withsuitable equipment - inductive pocess
- or use suitable tools.
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