Cooling - Siemens SIMOTICS T-1FW6 Operating Instructions Manual

Each insulation resistance must be at least 10 MΩ. A lower insulation resistance indicates
that the motor insulation is damaged.
Risk of death due to electric shock!
During and immediately after the measurement, in some instances, the terminals are at
hazardous voltage levels, which can result in death if touched.
• Never touch the terminals during or immediately after measurement.
7.4

Cooling

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 if 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.
• 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.
1FW6 external rotor built-in torque motors
Operating Instructions, 03/2023, A5E49196960B AC
WARNING
WARNING
WARNING
CAUTION
Commissioning
7.4 Cooling
87