Storage In Sheltered Environment; Unprotected Storage Environment; Parts; Space Heaters - WEG GPW Series Installation, Operation And Maintenance Manual

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3.2.3.1.1 Storage in sheltered environment


The environment must be closed and covered;

The local must be protected against moisture, vapors,
aggressive agents, rodents and insects;

There can't be the presence of corrosive gases such as
chlorine, sulfur dioxide or acids;

The environment must be free of continuous or
intermittent vibration;

The environment must feature ventilation system with air
filter;

Ambient temperature between 5 °C and 60 °C, seeing
that sudden temperature variations must not occur;

Air relative humidity < 50%;

Feature a dirt and dust prevention system;

Feature fire detection system;

It must be provided with electricity to supply the space
heaters (if applicable).
If applicable of these requirements is not met in the storage
place, WEG suggests that additional protections be
incorporated to the package of the alternator during the
storage period, as follows:

Closed wooden box or similar package with electrical
wiring that allows the space heaters (if applicable) to be
energized;

If there is a risk of infestation and fungus formation, the
package must be protected in the storage place by
spraying it or painting it with appropriate chemicals;

The preparation of the package must be done carefully
by a qualified person.

3.2.3.1.2 Unprotected storage environment

It is not recommended to store the alternator in an
unprotected place.
If the storage in unprotected environment cannot be
avoided, the alternator must be packed in specific package
for this condition, as follows:

For storage in unprotected environment, besides the
recommended package for internal storage, the
package must be covered with a protection against
dust, moisture and other foreign materials, using for this
purpose a piece of canvas or sturdy plastic;

Place the package on platforms or foundations that
ensure protection against moisture and prevent it from
sinking into the ground;

Once the alternator is covered, a shelter should be
erected to protect it from direct rain, snow or excessive
heat from the sun.
ATTENTION
If the alternator is kept in storage for long
periods, it is recommended to regularly
inspect it as specified in item 3.2.3.12 of this
manual.
14 l Installation, operation and maintenance manual
3.2.3.2

Parts


If parts are supplied separately (terminal boxes, covers,
etc.), these parts must be packed as specified in items
3.2.3.1.1 and 3.2.3.1.2;

The air relative humidity inside the package must not
exceed 50%;

The bearings must not be subject to shocks, falls or
storage with vibration or humidity, which can cause
dents on the internal tracks or on the balls, reducing
the useful life.
3.2.3.3

Space heaters

The space heaters of the alternator (if applicable) must
remain energized during the storage period so as to avoid
moisture condensation inside the alternator and thus
ensure that the winding insulation resistance remains at
acceptable levels.
3.2.3.4

Insulation resistance

During the storage period, the stator, rotor and exciter
winding insulation resistance of the alternator must be
measured and recorded every three months and prior to
the installation of the alternator.
Any drop in the value of the insulation resistance must be
investigated.
3.2.3.5

Exposed machined surfaces

All exposed machined surfaces (for example, shaft end,
flange, coupling disk) are protected at the factory with a
temporary protective agent (rust inhibitor).
This protective coating must be reapplied at least every 6
months or when it is removed and/or damaged.
Recommended Product:
Name: Anticorit BW protective oil, Manufacturer: Fuchs
3.2.3.6

Bearings

The rolling bearings are lubricated at the factory for testing.
During the storage period, every two months the locking
device must be removed from the shaft and the shaft
rotated manually to keep the good conditions of the
bearing. After 6 months of storage and before start-up, the
rolling bearings must be relubricated. If the alternator is
kept in storage for over two years, the rolling bearings
must be cleaned, inspected and relubricated so as to
ensure their integrity.
ATTENTION
If you cannot turn the shaft of the alternator,
as recommended, check the conditions of
the rolling bearing before the commissioning
of the alternator.