probst SVZ-UNI Series Operating Instructions Manual page 52

Operation 20 / 25
When gripping shaft cones with bracket III mind,
that all three brackets are gripping below of the
cylindrical part of the of the manhole cover
opening (see Fig.5).
I.e. the cylindrical part may have a maximum
allowable measure of 150 mm (< 150 mm) .
Fig.
5
The gripping of shaft cones with a cylindrical part
more than 150 mm (> 150 mm) is not allowed.
The brackets gripping then, with the lifting in the
cylindrical part of the manhole cover opening (see
Fig.6). The shaft cone hangs thereby a little
diagonal.
Thus it exists slipping danger of the grippiing
good!
Fig 6