Agromatic ESR-NK Series, Installation And Operating Manual, Page: 32 / 98

5.1 General notes 5 Assembly
26 Actuators NK and VK, Position Controller ESR-NK
5.1 General notes
Important information!
In order to ensure safe operation of the actuator, the device should have a
rated torque that is 15-20% higher than the torque required for adjusting
the valve (for rated torques see section
“3.4.5 Functional data” ).
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Inspect the actuator for possible damage (e.g. transport damage) before
installing it.
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If an anti-corrosive agent was applied for storing the actuator, it must be
removed and replaced by grease before the device is installed.
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Protect the actuator against strong vibrations such as may occur when the
actuator is dropped.
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It is forbidden to attach hooks, ropes or the like directly to the actuator.
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The actuator may not be lifted by the handwheel.
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Adhere to the installation instructions of the valve manufacturer.
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The valve must be able to move freely during the installation.
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Where possible, avoid installing the actuator on an operating valve.
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If it is necessary to install the actuator in an operating system, all precau-
tions must be taken to ensure that the system is in a safe condition (see
operating instructions of the system and regulations provided by the sys-
tem owner/lessor).
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If the actuator is attached to a freely accessible valve, the crushing and
pinching hazards from rotating valve parts must be observed.
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If the actuator is to be attached to a valve not yet installed into a system,
make sure that the valve is secured so that its stability is maintained dur-
ing the installation of the actuator.
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Check the cable glands and filler plugs (if fitted) for tightness before put-
ting the actuator into service.
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Do not put the actuator into service unless the limit switches have been
set.
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Protect the actuator sufficiently against climatic influences – e.g. by fitting
a protective cover.
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Spark-quenching capacitors within the customer's power supply may in-
fluence the rotational stability of the actuator and cause damages to it.