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Maintenance
The actuators are maintenance-free.
When servicing the control device:
Verbrennungsgefahr durch heisse Antriebskonsole
The actuator brackets on heating plants can also become hot from the contact with the hot
valve during operation. The temperature of the actuator bracket can reach 100 °C.
When servicing the actuator:
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Risk of injury
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Recommendation SKD6..:
Trigger stroke calibration after maintenance.
Repair:
See Spare parts [➙ 12]
Risk of injury through broken housing or cover
Dismounting the actuator with broken housing from the valve can release the highly
tensioned spring return, which can cause flying parts and injury.
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Siemens
Smart Infrastructure
WARNING
Switch off both pump and operating voltage.
Close the main shutoff valve in the piping.
Release pressure in the pipes and allow them to cool off completely.
WARNING
Disconnect electrical connections from the terminals as neede.
The actuator must be properly installed prior to recommissioning the valve.
WARNING
NEVER dismount actuator from valve.
Dismount valve-actuator combination (control device) as complete unit.
Disassembly only by qualified personnel.
Send the control device along with an error report to the local Siemens office for
analysis and disposal.
Mount new control device (valve and actuator) properly.
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CM1N4561en
2021-02-17
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