Alfa Laval ALTB-SB-20, Инструкция по эксплуатации

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8 Appendix
Ensure totally clean surfaces during mounting. Always use original Alfa Laval parts.
3. Assembl
y
instructions, storage,
preparation, installation
www.nord.com B1000-GB-0713
-11-
Figure 3-1: Activating the vent plug Special pressure
vents ar
e
supplied
as
loose parts.
Before commissioning,
the vent plug must
be replace with the pressure vent which is suppli
ed as a loose part. This is achieved by screwing
out the vent fitting and replacing it with the pressu
re vent and seal (refer to Section 6.2 for torque
values). Double
gear
units consist
of two
single units and are equipped
wit
h 2 oil
chambers
and
2 pressure vents. Figure 3-2: Removing vent plug and fitting the pressure vent
3.5
Installing the gear unit
The
eyebolts screwed into the
gear units must be
used
during installation.
The safety
notes in
Section 1.4 must be observed. The base and/or flange to which the gear unit is fitted should
be vibration-free,
torsionally
strong
and flat. The smoothness of the mating surface
on the base or flange
must be
according to
tolerance clad
K of
DIN ISO 2768-2.
All contamination to
the
bolting
surfaces
of
gear
unit
and
base and/or flange must be thoroughly removed. The
gear unit
must
be precisely aligned
with
the
drive
shaft of
the
machine in order to
prevent
additional forces from being imposed on the gear unit due to tension. Welding of the gear unit is prohibited. The gear unit must not be used as the earth connection for welding work, as this may cause damage to the bearings and gear wheels. The
gear
unit must
be
installed in the correct configuration (see
Section 6.1)
(UNIVERSAL
gear unit types
SI and
SMI
are independent
of the configuration). Changes
to the installation
position after delivery require adjustment of the quantity of oil, and often other measures such as e.g. the installation of encapsulated
roller
bearings.
Damage may
result if the stated
installation position is not observ
e
d.
All gear unit feet and/or all
flange bolts
on each
side
must be
used. Bolts must
have a minimum
quality of 8.8. The bolts
must be tightened to the correct torques (refer to Section 6.2 for torque
values). Tension-free bolting must be ensured, particularly for gear units with a foot and flange.
3. Assembl
y
instructions, storage,
preparation, installation
-12- B1000-GB-0713
www.nord.com
Danger!
To ensure that the gearbox does not get too
w
arm and to avoid injury
to persons,
observ
e the follo
w
in
g during installation:
The surfaces of gear unit
s
or geared motors may become hot during or shortly after
operation.
Attention: danger of burns!!
Protection against accidental contact may need to
be installed. With geared motors, the
cooling air of the motor fan
must be able to flow
unobstructed
onto the gear unit.
3.6
Fitting hubs on the gear shafts
Attention!
Do not subject the gear unit to harmful axial forces when fitting the hubs.
Drive and driven
elements,
e.g. coupling
and chain-wheel hubs must
be mounted onto
the drive
and driven shaft of the gear unit using suitable
pullers
that will not apply damaging axial forces
onto the gear unit. In particular, do not hit the hubs with a hammer. Use the end thread of the shafts for pulling. Fitti
ng can be aided by coating the hub with lubricant
or heating it up to approx. 100
o
C beforehand.
Figure 3-3: Example of a simple pulling device
Danger! Drive and driven
elements, such as belt
drives,
chain drives and
couplings
must be fitted
w
ith contact protection.
Driv
en elements ma
y
only
subject the driv
e units to the maximum radial force
F
R
and axial
force F
A
as specified in the catalogue.
Observe the
correct tension, particularly
on belts
and
chains.
Additional
loads
due
to unbalanced
hubs
are not permitted. The radial
force must be
applied to the gear unit as closely as possible.
54