Siemens 1PH813 Operating Instructions Manual page 34

Installation
5.3 Attaching the output elements
Figure 5-2
Motor without output element
The feather key can fall out
The featherkeys are only secured during transport to prevent them from falling out. If a
motor is not equipped with an output element, the feather key may fall out during operation.
Death or serious injury can result.
At the shaft end, secure the fitted key without output element so that it cannot be flung out
and for balance type "H" shorten it by approximately half.
34
WARNING
Shock-hazard protection for output elements
The general shock-hazard protection measures for output elements must be
observed.
Fitting/removing output elements; A = intermediate washer (for maintaining the centering
in the shaft end)
WARNING
Synchronous/induction motors 1PH813
Operating Instructions, 04/2009, 610.48000.22