Siemens 1LA8, Operating Instructions Manual

Page: 47 / 174

NOTICE
Damage to insulation
If the critical insulation resistance is reached or undershot, this can damage the insulation
and cause voltage flashovers.
● Contact the Service Center (Page 143).
● If the measured value is close to the critical value, you must subsequently check the
insulation resistance at shorter intervals.
Limit values of the anti-condensation heating insulation resistance
The insulation resistance of the anti-condensation heating with respect to the machine housing
should not be lower than 1 MΩ when measured at 500 V DC.
5.1.4 Preparing the mating faces
Prepare the foundation faces dependent on the machine type:
● Mounting on a foundation
– Ensure that the foundation faces are flat and clean.
– Check the dimensions of the mounting-foot holes, if necessary.
● Flange connection
– Clean the flange before installation, and make sure that the flange faces are flat and
clean.
– Check the dimensions of the flange geometry, if necessary.
● Wall mounting
– Make sure that the wall faces are flat and clean.
– Check the dimensions of the mounting-foot holes, if necessary.
Note
Wall mounting
Machines that are attached to the wall by their mounting feet because of their type
must be supported from below by a wall strip, for example, or pinned.
Assembly
5.1 Preparations for installation
SIMOTICS TN Series N-compact 1LA8
Operating Instructions 05/2014
47