Storage; Exposed Machined Surfaces - WEG W22 Premium E3 Manual De Instalación, Operación Y Mantenimiento

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5. STORAGE

If the motor is not installed immediately, it must be stored in a dry and clean environment, with relative humidity
not exceeding 60%, with an ambient temperature between 5 ºC and 40 ºC, without sudden temperature
changes, free of dust, vibrations, gases or corrosive agents. The motor must be stored in horizontal position,
unless specifically designed for vertical operation, without placing objects on it. Do not remove the protection
grease from shaft end to prevent rust.
If the motor are fitted with space heaters, they must always be turned on during the storage period or when the
installed motor is out of operation. Space heaters will prevent water condensation inside the motor and keep
the winding insulation resistance within acceptable levels. Store the motor in such position that the condensed
water can be easily drained. If fitted, remove pulleys or couplings from the shaft end (more information are given
on item 6).
The space heaters should never be energized when the motor is in operation.
For the use of space heaters in motors that are stored in hazardous area, adopt the same cable inlet and
connection requirements described in item 6.

5.1. EXPOSED MACHINED SURFACES

All exposed machined surfaces (like shaft end and flange) are factory-protected with temporary rust inhibitor. A
protective film must be reapplied periodically (at least every six months), or when it has been removed and/or
damaged.
5.2. STORAGE
The stacking height of the motor packaging during the storage period should not exceed 5 m, always
considering the criteria indicated in Table 5.1:
Packaging Type
Cardboard box
Wood crate
Notes:
1) Never stack larger packaging onto smaller packaging.
2) Align the packaging correctly (see Figure 5.1 and Figure 5.2).
Figure 5.1 – Correct stacking
84 Manual of Electric Motors
Table 5.1 – Max. recommended stacking height
Frame sizes
IEC 63 to 132
NEMA 143 to 215
IEC 63 to 315
NEMA 48 to 504/5
IEC 355
NEMA 586/7 and 588/9
HGF IEC 315 to 630
HGF NEMA 5000 to 9600
Maximum stacking quantity
Indicated on the top side of
the cardboard box
06
03
Indicated on the packaging
X
Figure 5.2 – Incorrect stacking