10.7.2 Assembling the internal assembly
Hint!
Pay attention to the following points when assembling the internal
assembly:
•
Thoroughly clean all parts and check for damage.
•
Replace all dismantled seals.
•
When changing the seals, do not damage the seal groove.
•
Use only replacement seals from the seal set indicated in the list of
spare parts.
•
Seals in the product-contacting area are generally not lubricated. To
facilitate assembly (better gliding properties and securing against
turning), this type of elastomer seal may, however, be wetted using a
food-grade lubricant.
! Wetting elastomer seals is not permitted when they are used in ATEX
applications!
Carry out the following steps:
1.
Install the internal assembly in the reverse order of disassembly, see
Section 10.7.1, Page 40.
®
The internal assembly has been assembled.
10.8
Removing and Installing the "Shrunk-on” Valve Seat Seal
10.8.1 Removing the “Shrink-on Fit” Valve Seat Seal
For information on valve seat seals, see Section 3.3, Page 18
Tools required:
•
O-ring cutter
•
Heat-resistant protective gloves
Caution!
Health hazard due to toxic fumes!
The
O-ring cutter
cuts the seal with a hot metal tip. At temperatures of more
than 300 °C, toxic fumes can be released.
► Avoid directly inhaling the fumes.
Caution!
Risk of injury due to hot and sharp-edged parts!
The
O-ring cutter
cuts the seal with a hot metal tip. This process heats up
the seal and possibly also metal parts of the valve.
► When removing the valve seat, always wear
heat-resistant protective
gloves
.
Carry out the following steps:
Maintenance
Removing and Installing the "Shrunk-on” Valve Seat Seal
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