GEA Aseptomag ADV, Operating Instruction

Page: 49 / 68

Fig.47: Fitting elastomer seals
3.
Heat new thermoplastic valve seat seal for seat B in the oven.
– Temperature: 140 °C (guideline value)
– Time: 3 - 5 minutes (guideline value)
! Make sure that the seal can be deformed along the circumference without
much effort. The heating time required depends on the type of oven and can
vary accordingly.
Fig.48: Oven
4. Insert heated seat seal into the groove of the internal assembly.
! Valve seat seals made of hard sealing materials must not be greased.
! The heated valve seat seal must fit tightly into the groove.
! After inserting the seal, immediately carry out the next work step.
®
The valve seat seal is still too rigid and cannot be inserted accurately into
the groove?
–
Reheat the valve seat seal as described in the previous instruction
step.
5. Screw the nut for the valve disc with intermediate piece and installed
elastomer seals onto the internal assembly, apply the spanner adapter and
tighten with the torque wrench and matching socket wrench insert.
! Note table “Torques for divisible valve discs”, see Section 10.9.3, Page 50.
Maintenance
Removing and Installing the "Divisible System" Valve Seat Seal
430BAL012841EN_1
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