Rockwell Automation 1329R Std. Industrial AC Induction Motors - Manual (Page 4)

4 Standard Industrial AC Induction Motors
The following preparations should be followed:
1. Minimize condensation in and around the motor by use of
desiccants or other humidity control methods.
2. Motor space heaters, when specified, must be energized when
there is a possibility that the ambient storage conditions will
reach the dew point. Space heaters are an option.
3. Coat all external machined surfaces with a material to prevent
corrosion. An acceptable product for this purpose is Exxon Rust
Ban #392 (or equivalent).
4. Measure and record the electrical resistance of the winding
insulation with a megger or insulation resistance meter. Minimum
accepted megohm level is the insulation kv rating + 1 megohm. If
levels fall below this value, contact your Allen-Bradley Sales
Office. The recorded data will be needed when the motor is
removed from storage.
5. Some motors have a shipping brace attached to the shaft to
prevent damage during transportation. The shipping brace, if
provided, must be removed and stored for future use. Before the
motor is moved, the brace must be reinstalled to hold the shaft
firmly in place against the bearing.
6. When placing the motor into extended storage (greater than 3
months), the motors with regreasable bearings must be greased
per
Table A . The motor shaft must then be rotated a minimum of
15 times after greasing. Non-regreasable motors with a “Do Not
Lubricate” nameplate should also be rotated 15 times to
redistribute grease within the bearing.
7. Before lubricating the motor, remove the grease drain plug
(opposite the grease fitting) on the bottom of each end bracket.
Replace the plug after greasing.
Table A
Lubrication Volume (Storage)
8. When the motor is placed into extended storage, regreasable
bearings must be greased (see Table A ). Motor shafts are to be
rotated 15 revolutions manually every 3 months and additional
grease added every nine months to each bearing (see
Table A ).
Bearings must be greased at the time of removal from storage.
Shafts on non-regreasable motors should be rotated 15
revolutions every 3 months.
9. All breather drains should be fully operable while in storage. The
motors must be stored so the drain is at the lowest point. All
breathers and automatic “T” drains must be operable to allow
breathing at points other than through the bearing fits.
NEMA (IEC) Frame Size Volume in Cubic Inches (cm 3 )
182-215 (112-132) 0.5 (8)
254-286 (160-180) 1.0 (16)
324-365 (200-225) 1.5 (24)
404-449 (250-280) 2.5 (40)