Siemens SIMOTICS TN N-compact 1LH8 - Connecting the Cooling Water Supply

NOTICE
Damage to bearings or the shaft
Large output masses and their centers of gravity outside the shaft extensions can lead to
resonance in operation. This can result in damage to the bearings and shaft.
Ensure that the permissible loads for the forces on the shaft extension are adhered to in
accordance with the catalog data or configuration data.
5.4 Connecting the cooling water supply
Seen from the shaft extension, connection of the water is possible from the right and from the
left.
NOTICE
Cooling water connection pipe
If the cooling water cannot flow freely, the machine will not be cooled properly. The machine
will overheat, which could result in material damage or even a write-off.
● Remove the flange cover plate.
● Insert the gaskets correctly.
1. For the pipes, select materials with the required chemical composition in accordance with
the water conditions. Also consider the pressure load and compatibility with the materials
from which the cooler is made.
2. Route and support the water pipes so that the connecting flanges are not exposed to
excessive stress or strain or vibration loads.
3. Rinse out the water circuit before you connect the cooling water supply to the motor. This
removes deposits and foreign bodies so that they cannot make their way into the cooling
circuit.
4. Should there be a possibility of the cooling water containing dirt and foreign bodies, install
suitable filters in the cooling-water feed pipe.
5. Connect the cooling circuit to the machine.
Filling the cooling circuit
1. Fill the cooling circuit with water until the air is completely forced out of the cooling circuit.
2. Perform a pressure check to see whether the cooling water supply is airtight. In doing so,
do not exceed the maximum test pressure. The maximum permissible pressure can be
found on the rating plate.
If you do not then put the machine into operation, you must implement the measures necessary
during stoppages.
Assembly
5.4 Connecting the cooling water supply
SIMOTICS TN Series N-compact 1LH8
60 Operating Instructions 06/2017