Under the following conditions it is possible that condensation may accumulate within the
● Wide fluctuations in the ambient temperature, such as direct sunlight combined with high
● Intermittent operation or load fluctuations during operation
Ensure that condensate can drain away
In the bearing shields on the DE and NDE, water drainage holes are situated below or opposite
the regreasing devices. They are sealed with screw plugs. Depending on the type of
installation, the water drainage holes are located at the bottom.
1. Regularly remove the screw plugs to allow the condensate to drain away.
2. Replace them when you have finished.
The degree of protection is reduced
Nominally the degree of protection of the machine is reduced to IP44 when the screw plug is
SIMOTICS TN Series N-compact 1LA8
Operating Instructions 08/2017
Damage due to condensate
If the stator winding is damp, its insulation resistance will be reduced. This can result in
voltage flashovers that can seriously damage the windings. Condensate can also cause
rust to form within the machine.
Ensure that condensate can drain away.
Schematic diagram of the water drain holes
5.2 Lift the machine to where it will be installed, and position it