5 Installation at Site
36 of 116
CHTRa
A
B
Fig. 18:
Checking the alignment of a coupling without spacer (example)
A
Coupling hub used as a reference
point for alignment
B
Coupling hub to be aligned
5.11.3 Checking the coupling alignment with a laser device
Coupling alignment can optionally be checked using a laser device.
To this end observe all warnings in the laser manufacturer’s operating instructions.
5.11.4 Permissible misalignment of pump and drive
The high temperature of the fluid handled and the fact that the pump set
components heat up during operation cause displacements of the coupling hub in
different directions. Such displacements must be taken into consideration when
aligning the cold pump set components at the coupling.
Always observe the radial displacement and angular misalignment as well as the axial
distance indicated by the coupling manufacturer.
5.11.4.1 Radial displacement
V
a
V
R
Fig. 19:
Radial displacement (example)
The radial displacement V
R
must not deviate more than 0.03 mm from the nominal
value, measured at a distance of 90°.
