Siemens SIMOTICS M-1PH818 Operating And Installation Instructions page 25

Cooling water-cooled motors
Cooling circuit
The cooling circuit consists of an enclosed, internal air circulation, which is driven by the shaft-
mounted fans and stainless steel tubes that are directly integrated into the laminated stator
core; cooling type IC 71W according to IEC / EN 60034‑6.
Cooling capacity
To ensure adequate cooling of the motor, it is essential to adhere to the specified cooling water
rate, temperature and cooling water quality (Page 29).
Cooling with external fan
The machine has cooling method IC 416 in accordance with IEC / EN 60034-6. The separately
driven fan unit and the terminal box can be mounted in a different position depending on the
order.
Improper use of the external fan
Improper use of the external fan can result in death, serious injury, and material damage.
● Observe and follow the operating instructions of the external fan.
See also
Additional documents (Page 167)
External fan
Different external fans are used depending on the shaft height and particular motor version:
Type
1PH818.
1PH822.
1PH828.
EC external fans with a fixed operating speed have been specifically designed for this motor
series.
Degree of protection
Depending on the version, the machine has degree of protection IP23 or IP55.
SIMOTICS M-1PH8 1PH818., 1PH822., 1PH828.
Operating Instructions 10/2017
WARNING
Version
Standard version
Version with option L75 External fan with three-phase motor
Version with option L76 EC external fan with three-phase EC motor
Standard version
External fan
EC external fan with single-phase EC motor
External fan with three-phase motor
Description
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