Siemens Flender H2NV Series - Gear Unit with Wiring in the Terminal Box; Gear Unit Without Wiring; Gear Unit with Motor Pump; Gear Unit with Forced Lubrication

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BA 5060 EN 04/2011
Alignment has to be done in two axial planes arranged perpendicularly to each other. This can be done
by means of a ruler (radial misalignment) and feeler gauge (angular misalignment), as shown in the
illustration. The aligning accuracy can be increased by using a dial gauge or a laser alignment system.
3
3
3
3
1
2
Fig. 18: Example of alignment on a flexible coupling
1 Ruler 2 Feeler gauge 3 Measuring points
The maximum permissible misalignment values are specified in the operating
instructions for the coupling; they must under no circumstances be exceeded during
operation.
Angular and radial misalignments may occur at the same time. The sum of both
misalignments must not exceed the maximum permissible value of the angular or
radial misalignment.
If you use couplings produced by other manufacturers, ask these manufacturers
which alignment errors are permissible, stating the radial loads occurring.
For alignment of the drive components (vertical direction), it is recommended to use packing
or foil plates underneath the mounting feet. The use of claws with set screws on the foundation
for lateral adjustment of the drive components is also advantageous.
6.5 Gear unit with wiring in the terminal box
• All prewired appliances (see orderspecific list of equipment) must be wired in accordance with the
circuit in the terminal box.
During startup, the signal of the pressure monitor should be bridged for approx. 20 seconds.
This is necessary since the pressure in the gear unit needs time to stabilize.
6.6 Gear unit without wiring
6.6.1 Gear unit with motor pump
• Wire the motor pump electrically.
6.6.2 Gear unit with forced lubrication
• Wire the pressuremonitoring device electrically (optionally as an opening or closing contact).
• During startup, the signal of the pressure monitor should be bridged for approx. 20 seconds. This is
necessary since the pressure in the gear unit needs time to stabilize.
If the oil pressure during operation drops below 0.3 bar, the gear unit must be stopped
at once.