Section 1
General Information
1
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2 General Information
MN427
Safety Notice
Continued
WARNING:
Mechanically lock or tie down the fan to prevent rotation as voltage will be produced even when
the PM motor is totally disconnected from the power source.
WARNING:
Use proper care and procedures that are safe during handling, lifting, installing, operating and
maintaining operations. Improper methods may cause muscle strain or other harm.
WARNING:
Incorrect motor rotation direction can cause serious or fatal injury or equipment damage. Be sure
to verify motor rotation direction before coupling the load to the motor shaft.
WARNING:
Motors that are to be used in flammable and/or explosive atmospheres must display the CSA
listed logo. Specific service conditions for these motors are defined in NFPA 70 (NEC) Article 500.
WARNING:
Pacemaker danger
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Magnetic and electromagnetic fields in the vicinity of current carrying
carrying conductors and permanent magnet motors can result result in a serious health hazard to
persons with cardiac pacemakers, metal implants, and hearing aids. To avoid risk, stay way from
the area surrounding a permanent magnet motor.
WARNING:
RPM AC permanent magnet motors can induce voltage and current in the motor leads by rotating
the motor shaft. Electrical shock can cause serious or fatal injury. Therefore, do not couple the
load to the motor shaft until all motor connections have been made. During any maintenance
inspections, be sure the motor shaft will not rotate.
WARNING:
Before performing any motor maintenance procedure, be sure that the equipment connected to
the motor shaft cannot cause shaft rotation. If the load can cause shaft rotation, disconnect the
load from the motor shaft before maintenance is performed. Unexpected mechanical rotation of
the motor parts can cause injury or motor damage.
WARNING:
Do not use non UL/CSA listed explosion proof motors in the presence of flammable or
combustible vapors or dust. These motors are not designed for atmospheric conditions that
require explosion proof operation.
WARNING:
UL Listed motors must only be serviced by UL Approved Authorized Baldor Service Centers if
these motors are to be returned to a hazardous and/or explosive atmosphere.
WARNING:
Guards must be installed for rotating parts such as couplings, pulleys, external fans, and unused
shaft extensions, should be permanently guarded to prevent accidental contact by personnel.
Accidental contact with body parts or clothing can cause serious or fatal injury.
Caution:
Use only a shielded motor power cable with a complete circumferential braided or copper
film/tape ground jacket around the power leads. This ground should be secured to the motor
frame from within the motor terminal box and must return without interruption to the drive ground.
In addition, if the motor and coupled equipment are not on a single common metal base plate, it is
important to equalize the equipment ground potentials by bonding the motor frame to the coupled
equipment using a high frequency conductor such as a braided strap.
Caution:
Do not lift the motor and its driven load by the motor lifting hardware. The motor lifting hardware
is adequate for lifting only the motor. Disconnect the load (gears, pumps, compressors, or other
driven equipment) from the motor shaft before lifting the motor.
Caution:
Do not lift the motor by the shaft. The motor is designed to drive a load but it is not intended to
have lifting forces and stresses applied to the motor shaft. Damage to the motor may result.
Caution:
If eye bolts are used for lifting a motor, be sure they are securely tightened. The lifting direction
should not exceed a 20
angle from the shank of the eye bolt or lifting lug. Excessive lifting
angles can cause damage.
Caution:
To prevent equipment damage, be sure that the electrical service is not capable of delivering more
than the maximum motor rated amps listed on the rating plate.
Caution:
If a HI POT test (High Potential Insulation test) must be performed, follow the precautions and
procedure in NEMA MG1 and MG2 standards to avoid equipment damage.
Caution:
Do not use an induction oven to heat noise tested bearings. Arcing between the balls and races
may damage the bearing. Failure to observe this precaution may result in equipment damage.
If you have any questions or are uncertain about any statement or procedure, or if you require additional
information please contact your Baldor District office or an Authorized Baldor Service Center.
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