Maintenance
7.3 Corrective Maintenance
A5E00264365A
Siemens AG Operating Instructions 2.02 1PL622
67
7.3.4
Screw-type connections
Tightening torque for screwed union connections
The screwed union connections with metal contact surfaces (end shields, active bearing
parts, terminal box parts bolted onto the stator frame) should be tightened to the following
torque with a tolerance of ± 10 %, depending on the thread size.
Table 7-3
Tightening torque for screwed union connections
Thread size
M6
M8
M10
M12
M16
M20
M24
Tightening torque [Nm]
8
20
40
70
170
340
600
Please refer to the relevant sections and drawings for all other tightening torques (electrical
connections and bolted connections for parts with flat gaskets).
Bolt locking devices
Nuts or bolts that are mounted together with locking, resilient and/or force-distributing
elements (e.g., safety plates, spring-lock washers, etc.) must be refitted together with
identical, fully functional elements.
Always replace keyed elements.
[ID: 379.01]
7.3.5
Replacing the sensor module
Only trained service engineers are authorized to replace the sensor module.
WARNING
Motor-specific sensor module
The Sensor Module contains motor-specific and sensor-specific data and an electronic
nameplate.
If you operate a different Sensor Module on the motor, this can result in serious injury or
death, or cause considerable material damage.
Only operate the sensor module on the original motor. Do not install the sensor module on
other motors. Do not replace the sensor module with a sensor module from a different
motor.
[ID 967.01]
See also
Siemens Service Center (Page 15)
