Mechanical installation
Preparation
5
21
Lenze ¯ BA 33.0005 ¯ 5.0
5.2 Preparation
Remove the corrosion protection from the shaft ends and flanges. If necessary, remove
dirt using standard cleaning solvents.
Stop!
Bearings or seals must not come into contact with the solvent − material
damages.
After a long storage period (> 1 year) you have to check whether moisture has
entered the motor. For this purpose, measure the insulation resistance (measuring
voltage 500 V
DC
). In case of values £1kWper volt of rated voltage, dry the winding.
Stop!
During transport and storage, condensation drain holes (see Fig. 1) are
closed with plugs for pollution prevention reasons. Remove the plugs
before commissioning!
Fig. 1 Motor with condensation drain holes
Condensation drain holes
Depending on the mounting position, the condensation drain holes are always at the
bottom of the motor!
¯ For condensate drainage
– the motor must be deenergised;
– the plugs (screws) must be removed.
Stop!
To restore the enclosure, re−insert the plugs (screws) after condensate
drainage. If the condensation drain holes are not sealed again, the IP
enclosure of the motor will be reduced. For horinzontal motor shafts to
IP23 and for vertical motor shafts to IP20.
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