Alfa Laval 881176-09-01/1, Instruction Book

Page: 30 / 56

5.2 Once per year 5 Maintenance
30
5.2 Once per year
Replace the O-rings with new ones included in
the O-ring service kit. Their positions are shown
in the
Spare Parts Catalogue. Before fitting,
lubricate the O-rings.
See ‘‘5.4.3 Replacement of O-rings” on page 36
how to proceed.
Check the condition of discs in the bowl, replace if
necessary. See comments in
‘‘5.3.1 Disc stack
replacement” on page 30 .
5.3 Every second year
5.3.1 Disc stack replacement
Check/replace the disc stack to maintain the
separation efficiency. At separation temperature
60
°
C and below, it is recommended to fit a new
stack every two years to ensure that the
separation efficiency is maintained.
At separation temperature above 60 °C, it is
recommended that the disc stack is replaced
every year or at any sign of brittleness.
See ‘‘5.4.3 Replacement of O-rings” on page 36
how to proceed.
The disc stack is available as a set.
5.3.2 Vibration damper
replacement
Fit new vibration dampers every two years.
Inspect the stop flanges of the dampers for
possible damage and replace the stop flanges
with new ones if necessary.
The position of the vibration dampers is shown in
illustration No. 11 at page
38 .
The vibration dampers are available as a set (see
Spare Parts Catalogue ).