Data Sheet for Product

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Siemens Control device PN25, safety function to DIN EN 14597 CE1N4387en
Building Technologies 2020-04-29
Maintenance notes
The MK..5.. control devices are equipped with maintenance-free gland
materials.
When servicing the control device:
· Never disassemble valve and actuator for maintenance or servicing
else approval for the safety function to DIN EN 14597 ceases.
· Switch off pump of the hydronic loop
· Interrupt the power supply to the actuator
· Close the main shutoff valves in the system
· Release pressure in the pipes and allow them to cool down
completely
· If necessary, disconnect electrical connections from the terminals
Recommendation MK..563..: Trigger stroke calibration after servicing or
maintenance.
The control device has to be replaced as a whole unit else approval for the
safety function to DIN EN 14597 ceases.
A damaged housing or cover represents an injury risk
· NEVER uninstall an actuator from the valve
· Uninstall the valve-actuator combination (actuating device) as a
complete device
· Use only properly trained technicians to uninstall the unit
· Send the actuating device together with an error report to your local
Siemens representative for analysis and disposal
· Properly mount the new actuating device (valve and actuator)
Parts could fly ultimately resulting in injuries from uninstalling an actuator
with a damaged valve housing due to the tensioned return spring.
It is not permitted to replace the sealing glands. In case of leakages, the
control device has to be replaced as a whole unit else approval for the
safety function ceases.
Disposal
The device is considered electrical and electronic equipment for
disposal in terms of the applicable European Directive and may not
be disposed of as domestic garbage.
· Dispose of the device through channels provided for this
purpose.
· Comply with all local and currently applicable laws and
regulations.
Repair
Warning
Sealing gland