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.
5. Service and Maintenance
www.nord.com B1000-GB-0713
-25-
Cleaning or replacing the
v
e
nt plug
Unscrew the vent
screw and thorou
ghly
clean it
(e.g. with
compressed
air)
and fit the
vent
screw
in the same place, If necessary, use a new vent screw with a new sealing ring.
Replacing the shaft sealing ring
Shaft sealing rings are
rubbing seals
made from
an elastomer
material
and
according to
their
principle are
subject to natural wear. The wearing
life
of shaft
sealing rings depends
on many
factors and
cannot be calculated
in advance.
On
ce the
shaft
sealing ring has
reached
the end of
its service
life, the oil film in the region
of
the sealing
lip increases
and a measurable
leakage
with dripping
oil occurs.
The
shaft
sealing ring must then
be replaced.
To
reduce
the
risk
of
leaks due to worn shaft sealing rings we recomme
nd that as a precaution, the shaft sealing rings
are replaced
after every 25,000 operating
hours or every 5 years. The space
between
the
sealing
lip and the protective
lip must be filled approximately
50% with grease on fitting
(recommended grease: PETAMO
GHY 133N). Take care
that
after fitting,
the new shaft sealing
ring does not run in the old wear track.
Re-lubricating bearings
For bearings which are not oil-lubricated and whose holes are completely above the oil level, replace the roller bearing grease (recommended grease: PETAMO GHY 133N). Please contact the NORD service department.
General ov
erhaul
The gear units must be completely dismantled The following work must be carried out:
Clean all gear unit components Examine all gear unit components for damage All damaged components must be replaced All roller bearings must be replaced Replace back stops if fitted Replace all seals, radial seals and Nilos rings Replace plastic and elastomer components of the motor coupling
The general overhaul must be carried out by qualified personnel in a specialist workshop with appropriate equipment in observance of national regulations and laws. We recommend that the general overhaul is carried out by the NORD service department.
6. Appendix
-26- B1000-GB-0713
www.nord.com
6. Appendix 6.1
Versions and maintenance
Explanation of symbols for the following version illustrations:
Vent Oil level Oil drain
Note!
SK 320, SK
172, SK 272, SK 372K, S
K
273
and SK373 as
well
as SK
01282 NB, SK 0282
NB, SK 1382 NB and UNIVERSAL
/ Minibloc gear units are lubricated for life.
These gear
units do not have an oil filler screw.
UNIVERSAL / MiniBloc
w
o
rm gear units
NORD UNIVERSAL
/ MiniBloc
worm
gear units
are suitable for
all installation positions. They
have an oil filler which is independent of the the version. As an option, types SI
and SMI can
be
equipped with
a vent
screw.
Gear units
with vents
must
be installed in the stated position (see section 6.5) Types SI, SMI, S, SM and
SU as 2-stage gear unit types and types SI, SMI as
worm gear units
for direct motor mounting have an oil filler which depends on the version an
d must be installed in
the stated position.
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