Installation Of The Valve - APV SW4 Mode D'emploi

381756 Iss Q 03.98
22
3 Maintenance
3.1.5 Installation of seals and assembly of the valve
The pos. numbers refer to the sectional drawing on page 2.
Fig. 4
1.
Insert the bushing (pos. 7) into the yoke (pos. 6). Then insert the
shaft seal (pos. 8) and press in the lightly greased seat seal
(pos. 9). (See fig. 4)
Check correct direction of installation.
2.
Install the yoke (pos. 6) at the actuator (pos. 5).
3.
Insert seat seal (pos. 13) into the shaft (pos. 12). Use the APV
assembly tool (see section 3.3) to pull in the seat seal. Grease
seat seal only lightly before its installation. If installed manually,
vent the seal groove by inserting a thin object between seal and
wall.
4.
Push the shaft (pos. 12) through the yoke (pos. 6) and the
actuator (pos. 5), fit centering washer (pos. 3) and tighten the nut
(pos. 2) until it locks on the top. Doing this, hold up the centering
washer.
Torque: 40 Nm.
5.
Lightly grease body seal (pos. 11) and insert into the groove of
the yoke (pos. 6).

3.1.6 Installation of the valve

1.
Put the control unit onto the adapter and secure it by means of
the ring.
2.
With valve design NC, the actuator must be controlled by air.
Do not touch movable parts!
Risk of injury if valve is unexpectedly activated.
3.
Carefully install the valve insert in the body (pos. 14) and tighten
the clamp (pos. 10). The body seal (pos. 11) must not be
damaged during the installation.
4.
With valve design NC, shut off air.
5.
Check basic adjustment of the valve position indicator.
The shift points can be adjusted by turning the positioning screw in
the control unit.