Nidec 22765-01, Руководство пользователя

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Page 43
NOTE: Grease used in ball and roller
bearing generators is subject to
deterioration over time. Before placing
the unit into service after long-term
storage, check the bearings for corrosion,
and replace the grease. Deteriorated
grease can cause bearing failure.
Storage
If the generator is not installed in its operating location as soon as
received, store it in a clean, dry area, not subject to vibrations or
sudden temperature or humidity changes. Make sure the storage area
temperature is between 10º F (-12º C) and 120º F (49º C) and the
relative humidity is less than 60%. If possible, storage should be in
an ambient temperature of approximately normal room temperature.
Protect the shaft from corrosion by applying an anti-corrosion agent.
Cover the unit with a durable cover.
Prepare units that cannot be stored in a temperature and humidity
controlled area as follows:
Install desiccant bags in the exciter cover and inside the end bells.
Vacuum seal the unit in a covering of plastic or other material designed
for that purpose.
Adequately tag the generator to ensure that preservative greases and
desiccant bags are removed before the unit is placed in operation.
If space heaters are supplied, energize them to keep condensation from
the windings.
For storage longer than 2 months, rotate the shaft a minimum of 10
revolutions every 60 days.
When the unit is taken out of storage, check the insulation resistance
on all windings. (See the Maintenance section).