GEA VARIVENT N, Инструкция по эксплуатации

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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.32
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)
! 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.33
5. Use both thumbs to press the heated O-ring (TEFASEP gold valve seat seal)
into the radial groove at one point.
Maintenance
Maintenance
430BAL008302EN_10
54 16.03.2023