Siemens SIMOTICS S-1FT2 Operating Instructions Manual page 49

The fan has degree of protection IP66.
Danger of explosion when operated in hazardous zones
Operating the fan in an environment with inflammable, chemically corrosive, electrically
conductive, or explosive dust or gases can cause explosions and result in death or serious injury.
• Operate the motor with forced ventilation only in an environment that is free of
Only operate the fan with normal ambient air.
Drawing in hair, items of clothing and other objects
For example, hair, neckties, loose objects can be sucked into the air intake and cause death or
serious injury.
• Take measures to prevent objects from being sucked in, e.g.
Direction of the fan air flow
(NDE → DE drive output)
Notes for operating the motor with forced ventilation
Note
Ensure that the motor is only operated when the external fan is running.
Note
Deposits of contaminated air can impair the heat dissipation of the motor or block the cooling
duct and overheat the motor.
• Regularly clean the motor to remove any deposits
SIMOTICS S-1FT2 synchronous motors for SINAMICS S120
Operating Instructions, 12/2023, A5E50610821B AF
WARNING
inflammable, chemically corrosive, electrically conductive, or explosive dust or gases.
WARNING
– Wear a head covering or hair net,
– Remove any neckties or similar,
– Keep the air intake area free.
Mounting and options
4.5 Cooling
47