Siemens 1PH818 Operating Instructions Manual page 28

Preparations for use
4.2 Transport and storage
Protection against humidity
● If a dry storage area is not available, then take the following precautions:
Long-term storage
If you are storing a machine for more than six months, you must check its condition every six
months.
● Check the machine for damage.
● Carry out any necessary maintenance work.
● Document all preservation measures taken so that they can be reversed before the
● Provide air-conditioning for the storage room.
Condensation
Condensation can collect in the machine as a result of sharp fluctuations in ambient
temperature, exposure to direct sunlight, high levels of humidity in the storage location or
intermittent operation/variations in load during operation.
CAUTION
Damage caused by condensation
If the stator winding gets damp, its insulation resistance decreases. This results in voltage
flashovers, which can destroy the winding. Condensation can also cause rusting inside the
machine.
In the bearing shields at the DE and NDE, water drain holes are situated in the foot area and
opposite the regreasing system. Make sure that the condensation can always drain away
freely.
Note
In IM B3, IM B5, IM B35 types of construction, water drainage holes are only functional in
horizontal installations.
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– Wrap the motor in humidity-absorbent material and then wrap it in film to create an air-
tight unit.
– Include several bags of desiccant in the seal-tight packaging. Check the desiccant and
replace as required.
– Place a humidity meter in the seal-tight packaging to indicate the level of air humidity
inside it.
– Inspect the motor regularly.
machines are put back into service.
Siemens AG Operating Instructions V1.0 1PH8
A5E02605207A AA