Coolant - Siemens SIMOTICS T-1FW6 Series Configuration Manual

3.1.2

Coolant

Provision of the coolant
The customer must provide the coolant. The motors are designed for use with an anti-
corrosion protection agent added to the water.
Note
Power derating when using oil as coolant
If you are using oil as coolant, then this can reduce the power loss dissipated by the cooler.
Appropriately reduce the motor power. Please contact your local Siemens office if you have
any questions.
Reason for the use of water with an anti-corrosion agent
The use of untreated water may lead to considerable damage and malfunctions due to water
hardness deposits, the formation of algae and slime, as well as corrosion, for example:
● Worsening of the heat transfer
● Higher pressure losses due to reductions in cross-sectional area
● Blockage of nozzles, valves, heat exchangers and cooling ducts
General requirements placed on the cooling medium
The cooling medium must be pre-cleaned or filtered in order to prevent the cooling circuit
from becoming blocked. The formation of ice is not permitted!
Note
The maximum permissible size for particles in the cooling medium is 100 μm.
Requirements placed on the water
Water which is used as basis for the coolant must comply as a minimum with the following
requirements:
● Chloride concentration: c < 100 mg/l
● Sulfate concentration: c < 100 mg/l
● 6.5 ≤ pH value ≤ 9.5
Contact the anti-corrosion agent manufacturer relating to additional requirements!
1FW6 High Speed built-in torque motors
Configuration Manual, 01/2020, 6SN1197-0AE03-0BP3
Mechanical properties
3.1 Cooling
57