Siemens 1PH728, Operating Instructions Manual

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Maintenance
7.3 Corrective Maintenance
A5E00177602A AD
Siemens AG Operating Instructions 2.02 1PH728
65
① Bearing cap end face
② Rotary shaft seal
③ Seat of shaft
The correct axial position of the rotary shaft seal is reached when the outer edges of the
bearing cap end face ① and rotary shaft seal ② are flush.
[ID: 375.01]
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 7-4 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.
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