NORD Drivesystems B1092 - Manual (Page 4)

-4- B1092-GB www.nord.com
3. Notes
3.2 Installation
For vertical configuration, all available lifting lugs and if necessary lifting straps (DIN EN 1492-
1:2000) and/or tie-down straps (DIN EN 12195-2:2001) must be used to stabilise the position.
Attachments must not be used as lifting aids.
After installation, screwed-on lifting lugs must be tightened or removed.
For vertical installation with the shaft end pointing downwards, a protective cover for the fan
cover is recommended, to prevent the entry of foreign bodies.
On the other hand, in the case of shaft ends pointing upwards, the ingress of liquids along the
shaft must be prevented.
Smooth running: Precise alignment of the clutch and a well-balanced drive element (clutch,
pulleys, fan …) are prerequisites for smooth vibration-free running.
Complete balancing of the motor and the drive elements may be necessary.
3.3 Terminal box
Tightening torques for the screws of the terminal box: See Fig. 4.2.
3.4 Balancing, drive elements
The fitting and removal of drive elements (clutch, pulley, gear wheel,…) must be performed
with suitable equipment (see Fig.7).
As standard, the rotor is balanced with half parallel key.
When fitting the drive element, pay attention to the type of balancing!
The balancing condition is stated on the end face of the shaft or the type plate (H = half, F =
full parallel key balancing, N = balancing without parallel key).
The drive elements must be balanced according to ISO 1940:2003.
For balancing with half parallel key, the protruding visible portion of the parallel key T
p
must
be machined off (see Fig. 8).
The generally necessary measures for protection against touching the drive elements must be
observed.
3.5 Electrical connection
All work must only be carried out by qualified technicians on stationary low-voltage machines
which have been switched off and secured against switching on again. This also applies to the
auxiliary power circuits.
The terminal box must be sealed against dust and water.
The mains voltage and frequency must conform to the data on the rating plate. A voltage
deviation of ± 5% and/or a frequency deviation of ± 2% are permissible. The connection and
configuration of the jumpers must be performed according to the circuit diagram in the
terminal box. Connect the bonding conductor to this terminal
.
For connection terminals with terminal bridges (e.g. according to DIN 46282) the conductors
must be arranged so that approximately the same terminal heights result on both sides of the
bar. This type of connection therefore requires that individual conductors are bent to a U-
shape or a fork terminal must be connected (see Fig. 5) This also applies to the bonding
connector and the external green/yellow earthing conductor.