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Idiomas disponibles
Idiomas disponibles
5
Fig. 681/481/481 HP:
1. Release lock nut on adjusting spindle, relieve spring of pressure by turning the
spindle in counter-clockwise direction.
2. Unscrew screws and bonnet.
3. After removing the spring and slide ring pull complete valve insert out of housing
using 2 screwdrivers (used as lever) (Fig. 1).
4. To assemble, repeat the sequence in reverse order. For versions with a cam on the
underside of the insert flange, it must be ensured that the cam is positioned directly
above the bore on the housing (Fig. 1).
Fig. 682/482/682 HP/482 HP:
1. Remove plastic cap; release lock nut.
2. Relieve spring of pressure by turning the adjusting spindle.
3. Uniformly unscrew the screws and bonnet.
4. Remove bonnet, spring seat, adjusting spindle and spring.
5. Screw 2 screws positioned opposite each other back into the housing.
These are required as a support for the lever action (only with nominal diameter
DN65 and DN80).
6. Use two screwdrivers (used as lever) to pull out the complete valve insert (Fig. 2)
and replace with new control unit.
7. Proceed in reverse order for assembly.
Fig. 682 LP/482 LP/481 LP:
1. Remove plastic cap, release lock nut (do not unscrew!)
2. Relieve spring of pressure by turning the adjusting spindle
3. Release and unscrew bonnet with open end spanner
4. Remove spring and slide ring
5. Release and unscrew hexagon nuts with open end spanner and screwdriver (Fig. 3)
Replacing the Valve Insert
Fig. 1: Removal and installation
Fig. 2: Removal of
control unit 682/482
of control unit 681/481
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