Burkert 8691 - Page 26

26
Mechanical installation
With 3-position actuator:
NOTE
Damagetotheseatsealortheseatcontour.
▶ When turning the actuator, the valve must be in the central position.
→ Apply compressed air to pilot air port 1:
3.5 bar for actuator size 50 (D) and 70 (M)
4.0 bar for actuator size 90 (N) and 130 (P)
For both actuator variants:
→ Switching the device manually with pilot valve (see chapter).
→ Usingasuitableopen-endwrench,counterthewrenchatonthebodyconnection.
→ Place a suitable open-end wrench on the hexagonal bolt of the actuator.
DANGER
Riskofinjuryfromhighpressureanddischargeofmedium.
If the direction of rotation is wrong, the body connection may become detached.
▶ Only turn the actuator is the prescribed direction.
→ Move the actuator to the required position by turning it counter-clockwise (viewed from below).
Figure 18: Turning the actuator (2)
english
Type 8691, Rev. 2