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The bearings of grease-lubricated motors are greased
at the factory with the grease cavity approximately
50% full.
Rotate the shaft of all grease-lubricated
motors 10-20 revolutions at two-month intervals.
If the purchaser has specified the machine be
packaged for long-term storage, the foregoing
recommendations do not apply and the packing
should be left intact during the period of storage.
C. Extended Storage
(Longer than 6 months)
In the event the motor is to be stored longer than six
months, please refer to GE instruction manual GEK-
97427.
D. Handling
WARNING: Lifting lugs on the motor are
designed for handling only the motor.
They are not to be used to lift the motor
plus
additional
equipment
compressors or other driven equipment. In the case
of assemblies on a common base, lugs or eyebolts
provided on the motor are not to be used to lift the
assembly and base. The assembly should be lifted
by a sling around the base or by other lifting means
provided on the base. In the case of unbalanced
loads (such as couplings or other attachments),
additional slings or other effective means should be
used to prevent tipping.
III.
INSTALLATION
WARNING: Installation should be in
accordance
Electric Code' or 'BS/EN 60204-1' and
'BS/EN 60204-11' and consistent with
sound National and local practices.
Coupling, belt and chain guards should be installed
as needed to protect against accidental contact with
moving parts.
Motors accessible to personnel
should be further guarded by screening, guard rails,
etc., to prevent them from coming in contact with
the equipment.
A. Location
Install the motor in a well-ventilated area. Make sure
there is a minimum clearance of one foot around the
motor to allow normal flow of air.
1.
Dripproof motors are intended to be
used in a well-ventilated place reasonably free of dirt
and moisture.
such
as
pumps,
with
the
'USA-National
2.
General Purpose enclosed motors can
be used where they are exposed to dirt, moisture, and
most outdoor conditions.
3.
Severe-duty enclosed motors can be
used in highly corrosive or excessively moist areas.
4.
Zone 2 Hazardous Locations
All motors marked with an IECEx or ATEX
designation are suitable for Zone 2 locations. Before
the motor is install in the hazardous location, the
marking must be reviewed for the intended location. If
the motor marking does not meet the intent of the
location do not install or operate the motor. Refer to
BS/EN 60079-0 and BS/EN 60079-15.
Motor marking for IECEx will have a nameplate with
the IECEx logo, IECEx certification number, and IECEx
marking codes. An example of the IEC Ex marking is as
follows;
Ex nA IIC T3 Gc
Where symbol:
a) Ex provides assurance of protection per IEC
standards.
b) nA indicates non-sparking
c) IIC is a code to indicate the type of explosive
gas atmosphere.
d) T3 is a code for the maximum surface
temperature.
e) Gc is a code for the motor protection level.
Refer to B/EN 60079-0 and BS/EN 60079-15 for the
meaning and understanding of all symbols and codes.
5.
Division
bearing
the
Underwriters'
designating the motor's Class and Group as defined in
the National Electrical Code (NEC) are designed for
operation in areas classified by local authorities as
hazardous in accordance with the NEC.
B. Mounting
1.
Mount motors securely on a firm, flat
base. Grout-in larger motors, if necessary. Grease
lubricated motors can be wall or ceiling mounted with
the shaft horizontal. Grease lubricated motors in NEMA
140–320 frame ratings can be wall mounted with the
shaft vertical. The standard transition and/or sliding
bases are only suitable for floor mounting. For other
mounting positions, please refer to your local GE
representative.
Oil lubricated sleeving-bearing motors shall always be
mounted with the shaft horizontal. The endshield shall
be located with the oil ring sight gage in the twelve
o'clock position.
6
GEI-56128H
1
Explosion-proof
motors
Laboratories
label
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