Burkert 8694 - Manual Actuation of the Actuator Via Pilot Valves; Single-Acting Actuators (Control Function a and B)

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Pneumatic installation
Importantinformationfortheproblem-freefunctioningofthedevice:
▶ The installation must not cause back pressure to build up.
▶ Select a hose for the connection with an adequate cross-section.
▶ The exhaust air line must be designed in such a way that no water or other liquid can get into the
device through the exhaust air port (3) or (3.1).
▶ Keep the adjacent supply pressure always at least 0.5 – 1 bar above the pressure which is required
to move the actuator to its end position. This ensures that the control behavior is not extremely
negativelyaectedintheupperstrokerangeonaccountoftoolittlepressuredierence.
▶ Duringoperationkeeptheuctuationsofthepressuresupplyaslowaspossible(max.±10%).If
uctuationsaregreater,thecontrolparametersmeasuredwiththeX.TUNE function are not optimum
9.3 Manual actuation of the actuator via pilot valves
9.3.1 Single-acting actuators (control function A and B)
The actuator can be moved without a power supply from the rest position to its end position and back again.
To do this, the pilot valves must be actuated with a screwdriver.
ATTENTION!
Thehandlevermaybedamagedifitissimultaneouslypressedandturned.
▶ Do not press the hand lever when turning it.
Pilotvalvenonactivated
(normalposition)
Pilot valve
for aerate
Pilot valve
for deaerate
Type 8694 for highairowrate
Pilot valve
for aerate
Pilot valve
for deaerate
Hand lever
to the left
Pilotvalveactivated
Hand lever
to the right
Figure 32: Pilot valves for aerate and deaerate the actuator
english
Type 8694 REV.2