Burkert Type 8650 User Manual
Page 11
40
GB
Replacement of a terminal or pneumatic module
Important note!
When converting or expanding the system, pay at-
tention that the sal rings of the pneumatic modules
are coated with a fi lm of suitable grease (e. g. with
Centoplex 2 from Klüber Lubrication). Otherwise
the seal rings may be damaged or installation made
more diffi cult.
In the case of modifi cation or expansion of prefa-
bricated systems, the system serial numbers and
system identifi cation numbers on the front side lose
their validity.
In such cases we recommend that you remove the
identifi cation sign or provide the device with a sui-
table identifi cation.
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During installation of the terminal or pneumatics module,
the modules are aligned with one another during produc-
tion. It ensures compliance with all the tolerances at the
interfaces (profi le mounting - plug - fl uid channels).
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GB
If you install the pneumatic module on a terminal module
yourself, pay attention during integration into the system
that all interfaces (profi le mounting - plug - fl uid channels)
engage in one another correctly.
Otherwise proceed as follows:
Remove the assembly from the system again.
Loosen the three screws on the rear of the terminal
module.
Realing the pneumatic module on the terminal module.
Tighten the three screws again.
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42
GB
Replacement of a valve
DANGER!
Hazards due to pressure changes!
During removal of the valve, only the P channel is shut off
in each case. This means that any pressure at the working
outlet ports A or B is relieved during dismantling. This
means also that an actuator connected to this port is also
depressurised. This can result in movement.
With large volumes on the actuator side, provide a shut-
off possibility for the working ports in order to prevent any
movement of the actuator.
•
We recommend that the system be brought to a
correspondingly safe basic condition electrically
before replacing the valve.
•
If the corresponding valve position is not fi tted with a P
shut-off, fi rst depressurise the system!
If you replace valves fi tted to modules with P shut-
off, no more than four valves may be removed at the
same time.
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GB
During removal of the valve, a relatively large amount of air
is initially blow off due to the function. The P shut-off can
only close when the necessary pressure diference has been
reached. The automatic shut-off significantly reduces the
exhaust air, however, so that only a slight residual leakage
occurs with the P shut-off closed.
Ensure that the gasket is correctly fi tted when installing
the valve.
Tighten the valve to the tightening torques indicated in
the chapter
Tools and torques.
Pay attention during installation of the valve that the
working ports are also pressurised in the corresponding
rest position of the valve until it switches over. This allows
a connected actuator to make a movement according to
the pressurisation.
Ensure that these movements do not cause any damage
or undesirable actions in the system.
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