bürkert 8685 Bedienungsanleitung Seite 16

note!
no detection or faulty detection of end positions.
▶ Do not change the position of the cap on the switch spindle.
▶ Use the hole ∅ 2.3 for fastening the switch spindle.
→
Push the switch spindles through the matching spindle lead-
throughs. The outside lead-throughs are designed for actuator
size RV70/110, while the inside lead-throughs for actuator size
RV50 (see "Fig. 7").
Hole ∅ 2.3 for
screwing in the
switch spindle
Fig. 8: Assembly of switch spindles and form seal
→
Using a suitable tool, screw the two switch spindles onto the
actuator spindles. There is a hole ∅ 2.3 on the spindle side for
this purpose (torque 1.0 Nm ± 0.1 Nm).
→
Place the form seal on the adaptation body (smaller diameter
points upwards).
16
Cap
Form seal
English
Type 8685 / 8686
Assembly
step 2: a ssembly of the feedback head / control head on the
adaptation body
If the electrical connection is made with a cable gland, we
recommend connecting the wires at this point, since otherwise
the feedback head / control head will have to be removed again
for the electrical connection.
For electrical installation see: "9.2 Device version 24 V DC"
"Device connection for cable gland Type 8685"
"Device connection for cable gland Type 8686"
note!
faulty detection of end positions.
▶ For actuators with control function B (CFB, NO), the lower end
position must be approached before the feedback head / control
head is placed on the adaptation body. To do this, pressurize the
appropriate pilot air port of the actuator ("Fig. 9").
▶ Make certain the feedback head / control head is correctly posi-
tioned relative to the actuator: The dummy plug or pressure-relief
valve must be located on the side of the pneumatic connections
of the actuator (see "Fig. 9").
→
Place the feedback head / control head on the actuator. As you
do, note:
- The dummy plug or pressure-relief valve must be located on the
side of the pneumatic connections of the actuator.
- The switch spindles must lodge inside the recesses on the bottom
of the feedback head / control head. Do not move the caps onto
the switch spindles.