16
Maintenance, malfunctions
Type 2080
Change bellows
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Unscrew the bellows from the spindle.
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Clean the inside of the valve body.
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Screw the new bellows onto the spindle with two fingers until it stops (tightening torque approx. 0.2 Nm;
too much tightening torque can damage the bellows!).
Install actuator
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Clean O-ring 25 x 2 FKM 70, check for reusability. Replace with new O-ring if necessary.
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Place the actuator with the new bellows on the housing and fasten it to the housing with the fastening
screws. Observe a tightening torque of 2 to 2.2 Nm at .
Restarting the bellows valve
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Connect the pilot air line.
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Open the pilot air.
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Open the media supply.
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Carry out a function and leak test.
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If it functions safely, the valve can be put back into operation.
8.2.1
Exploded view of spare part replacement Type 2080 INOX
Valve body
O-ring 25 x 2 FKM 70
PTFE bellows
Fastening screws hexagon socket M4 x 12
DIN ISO 4762 A4 for mounting the actuator
on the valve body
Port connection
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