4.3
Exchanging the O-ring (TEFASEP gold)
Tools required:
•
O-ring cutter
•
Heat-resistant protective gloves
•
Oven (no microwave)
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 seal always wear heat-resistant protective gloves.
Carry out the following steps:
1.
Place the heated metal tip of the O-ring cutter at right angles on the valve seat seal to be
removed.
2.
Cut through the valve seat seal at one point using the O-ring cutter.
!
Pay attention not to damage the edge of the radial groove.
Fig.2
3.
Take out the cut valve seat seal.
4.
Warm a new O-ring (TEFASEP gold valve seat seal) in the oven.
Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140 °C (guideline value)
Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 5 minutes (guideline value)
!
Ensure 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.
Tefasep Gold
Exchanging the O-ring (TEFASEP gold)
221BAL015386EN_1
01.11.2023
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