LEESON Permanent Magnet AC Motors - Manual (Page 3)

1.3 ENVIRONMENTAL SAFETY
WARNING: HAZARDOUS LOCATIONS
The NEC and the local authority having jurisdiction must be consulted
concerning the installation and suitability of motors for use in
Hazardous Locations, in accordance with NEC Article 500. The local
authority having jurisdiction must make the final determination of what
type of motor is required. The application and operation is beyond the
control of the motor manufacturer. Failure to do so may cause serious
injury or death to personnel.
2.0 RECEIVING AND INSPECTION
2.1 INITIAL INSPECTIONS
WARNING: ELECTRICAL SHOCK HAZARD
Shaft rotation produces voltage at motor leads and connected
equipment even when motor is disconnected from power source. Do
not open terminal box or touch unprotected terminals while the motor
shaft is rotating. Failure to do so may cause serious injury or death to
personnel.
2.1.1
CHECK PACKING LIST AND INSPECT the
packaging to make certain no damage has occurred in shipment.
If there is visible damage to the packaging, unpack and inspect
the motor immediately. Claims for any damage done in shipment
must be made by the purchaser against the transportation
company.
2.1.2 TURN MOTOR SHAFT (see Electrical Shock Hazard
above) by hand to be certain that it rotates freely. Note: Motor will
not turn freely if leads are shorted together. User may feel small
pulsations when turning shaft due to the magnets in rotor. Shaft
seals and bearing seals may add drag.
CAUTION: Observe caution when working near threads or
keyways. Finger or ring contact may cause injury.
2.1.3
CHECK NAMEPLATE for conformance with purchase
order requirements and compliance with power supply and control
equipment requirements.
2.2 HANDLING
WARNING: FALLING OBJECT HAZARD
Eyebolts or lifting lugs, where provided, are intended for lifting only the
motor and accessories mounted by the motor manufacturer (unless
specifically stated otherwise on the motor). Utilizing the motor lifting
provision to lift other components such as pumps and gear boxes
could result in serious personal injury, death and/or property damage.
WARNING: FALLING OBJECT HAZARD
Before using the lifting provision, check the eyebolts and/or other lifting
means to assure they are not bent or damaged and are completely
threaded, seated & secured to the motor. Equipment to lift motor must
have adequate lifting capacity. While lifting the motor, DO NOT stand
under or in the vicinity of the motor. Failure to follow these instructions
could result in serious personal injury, death and/or property damage.
2.2.1 LIFTING ANGLE LIMITATIONS
2.3
STORAGE: Motors, not put into service immediately, must
be stored indoors in a clean, dry location. Avoid locations with large
temperature swings that will result in condensation. Motors must be
covered to eliminate airborne dust and dirt. If the storage location
exhibits high vibration, place isolation pads under motor to minimize
damage to motor bearings.
2.3.1 BEARING LUBRICATION: Bearings are grease
packed at the factory; relubrication upon receipt of motor or while
in storage is not necessary. If stored more than one year, add
grease per lubrication instructions (Table 4-4) before start-up.
2.3.2 SHAFT ROTATION: (see Electrical Shock Hazard
Warning in section 2.1) It is recommended that the motor shaft be
rotated 5 to 10 rotations every three months to distribute the
grease in the bearings. This will reduce the chance for corrosion
to form on the bearing rolling elements and raceways. Note: User
may feel small pulsations when turning shaft due to the magnets
in rotor. Shaft seals and bearing seals may add drag.
2.3.3 DAMP OR HUMID STORAGE LOCATIONS: Treat
unpainted flanges, shafts, and fittings with a rust inhibitor. Apply
appropriate power to the motor’s space heaters (if so equipped).
3.0 INSTALLATION AND OPERATION
WARNING: ELECTRICAL SHOCK HAZARD
Only qualified personnel who are familiar with and understand the
appropriate national codes, local codes and sound practices should
install or repair electrical motors and their accessories. Installation
should conform to the appropriate national code as well as local codes
and sound practices. Failure to follow these instructions could result in
serious personal injury, death and/or property damage.
WARNING: ELECTRICAL LIVE CIRCUIT HAZARD
Do not touch electrically live parts. Disconnect, Lockout and Tag input
power supply before installing or servicing motor (includes accessory
devices). Use a voltmeter to verify that power is off before contacting
conductors.
WARNING: ELECTRICAL SHOCK HAZARD
Shaft rotation produces voltage at PM motor leads and connected
equipment even when motor is disconnected from power source. Do
not open terminal box or touch unprotected terminals while the motor
shaft is rotating. Failure to do so may cause serious injury or death to
personnel.
WARNING: ELECTRICAL SAFETY
Refer to Section 1.0 for additional warnings before proceeding with
installation and operation.
3.1 LOCATION
3.1.1 SELECTING A LOCATION: Consideration should be
given to environment and ventilation. Motors should be installed
in an area that is protected from direct sunlight, corrosives,
harmful gases or liquids, dust, metallic particles, and vibration. A
motor with the proper enclosure for the expected operating
condition should be selected. Provide accessible clearance for
cleaning, repair, service, and inspections (See section 3.1.3 for
construction clearances). The location should be considered for
possible future motor removal or motor handling. The free flow of
air around the motor should not be obstructed.
3.1.2 AMBIENT TEMPERATURE LIMITS: The ambient
temperatures of the air inlet to the motor should not exceed 40°C
(104°F) or be less than -30°C (-22°F) unless the mo tor nameplate
specifically states an ambient temperature outside of these limits.
The ambient inside an enclosure built around the motor shall not
exceed the nameplate ambient. For ambient temperatures outside
of these limits consult the motor manufacturer.
NOTICE: INSULATION DEGRADATION WARNING
Insulation at high temperatures ages at an accelerated rate. Each
10°C increase in temperature reduces the insulation life by one
half.