Mechanical properties 
  3.5 Service and inspection intervals 
1FW6 Built-in torque motors 
Configuration Manual, 07/2017, 6SN1197-0AE00-0BP9 
63 
 
Risk of burning when touching hot surfaces  
There is a risk of burning when touching hot surfaces immediately after the motor has been 
operational. 
•  Wait until the motor has cooled down. 
 
 
Danger to life when the cooling system bursts 
The motor will overheat if it is operated without cooling. When cooling water enters the hot 
motor, this immediately and suddenly generates hot steam that escapes under high 
pressure. This can cause the cooling water system to burst, resulting in death, severe injury 
and material damage. 
•  Never operate the motor without cooling. 
•  Only commission the cooling water circuit when the motor is in a cool condition. 
 
 
Risk of burns when hot cooling water escapes 
There is a risk of burns caused by escaping hot cooling water and steam if you open the 
cooling circuit of a motor that was previously in operation. 
•  Do not open the motor cooling circuit until the motor has cooled down. 
 
 
Risk of electric shock due to incorrect connection 
There is a risk of electric shock if direct drives are incorrectly connected. This can result in 
death, serious injury, or material damage.  
•  Motors must always be precisely connected up as described in these instructions. 
•  Direct connection of the motors to the three-phase supply is not permissible. 
•  Consult the documentation of the drive system being used.