Unpacking – Rockwell Automation 1329R Std. Industrial AC Induction Motors User Manual
Page 5
Standard Industrial AC Induction Motors
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10. Space heaters, when specified, are to be connected and operable
while in storage.
11. Windings must be meggered at the time equipment is put in
storage (refer to
). When the motor is removed
from storage, the insulation resistance must not have dropped
more than 50% from the initial reading. Any drop below this
point necessitates electrical or mechanical drying.
12. When motors are not stored in the original containers, but are
removed and mounted on other pieces of machinery, the
mounting must be such that the drains/breathers and space
heaters are fully operable. In this respect, the drains must be kept
at the lowest point in the motor so that all condensation can
automatically drain out.
Storage for Extended Periods (greater than 18 months)
All of the preceding requirements described in this document apply,
with the following additional requirements.
1. Motor must be crated in a box similar to Export Boxing, but the
“shell” (sides and top of box) will be lag-bolted to the wooden
base (not nailed). This design will allow the box to be opened and
closed many times without destroying the “shell.”
2. The motor will be sealed in an airtight vapor barrier bag with
desiccant inside. This airtight bag will give added protection
during shipment of motor to the permanent storage area.
3. After the first “inspection” (for megger reading, turing the shaft,
etc.) it is recommended that the vapor bag be re-sealed with
masking tape (or similar method). New desiccant should also be
added inside the bag before closing. Once closed, place the shell
over the motor and replace the lap bolts.
4. If a “zipper” type of bag is used (instead of a “heat-sealed” bag),
then close the bag with the zipper (instead of taping).
5. New desiccant must be added inside the bag after each periodic
inspection.
6. Minimize the accumulation of condensed water in and around the
machine.
Unpacking
After unpacking and inspecting, turn the motor shaft by hand to
assure that there are no obstructions to free rotation.
Equipment which has been in storage for some time should be tested
and relubricated (regreasable type) prior to being put into service.
Refer to “Test General Condition” and “Lubrication” for procedure to
be performed after extended storage.
Equipment with roller bearings is shipped with a shaft block. After
removing the shaft block, be sure to replace any bolts that are
required in service and that were used to hold the shaft block in place
during shipment.