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Burkert Type 8686 User Manual

Page 17

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17

Assembly

Form seal

Dummy plug

Pressure-relief valve

Connection
SFB

Connection
SFA

Type 2036

Type 8686

Type 8685

Pneumatic actuator

connections

Switch spindle

Recess

Fig. 9: Assembly of feedback head / control head

Push the feedback head / control head onto the adaptation body
until no gap is visible on the form seal. Now align the mounting hole
of the feedback head / control head on each side with the square
nut of the adaptation body.

Fastening screw M4

Mounting hole of the

feedback head / control

head concentric with

square nut of the adap-

tation body

O-ring 3.5 x 1.5

Fig. 10: Fastening of feedback head / control head

note!

if the torque is too high when screwing in the fastening screw
or if the O-ring is missing, degree of protection ip65 / ip67 is
not ensured.

▶ The fastening screw may only be tightened to a maximum torque

of 0.5 Nm ± 0.1 Nm.

▶ Check the position of the O-ring.

Use the two fastening screws M4 and matching O-rings to
fasten the feedback head / control head onto the adaptation
body (torque: 0.5 Nm ± 0.1 Nm).

The mechanical connection is already completed for the feedback
head after these two assembly steps. “Step 3: Assembly of pneu-
matic connection - install the actuator” must still be performed for
the control head.

English

Type 8685 / 8686

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