Siemens LDS 6 - Page 54

Cleaning the process interface window on the process side
1. Demount the process interface, also demount the purging tube if applicable.
WARNING
Dangerous or pressurized process
Before you start demounting the process interface make sure that the process conditions
are safe, e.g. there are no more pressure or dangerous substances on the process side.
2. Remove all dust particles using pressurized air or 󹪞ushing water.
3. Clean the optical surface with a soft cloth. Water with a small amount of soap or a mild
detergent also works 󹪝ne in many cases.
Start the cleaning process at the center and work with circular movements towards the rim.
4. To remount the process interface, refer to section LDS 6, optics housing CD 6 installation
(Page27). Also a new alignment of the optics housings has to be carried out.
Cleaning the lens or the process interface window on the optics housing side
1. Release the clamp ring using an appropriate tool.
2. Remove the optics housing.
3. Clean the optical surfaces from dust particles using pressurized air or 󹪞ushing water.
4. Clean the optical surfaces with a soft cloth. Water with a small amount of soap or a mild
detergent also works 󹪝ne in many cases. Start the cleaning process at the center and work
with circular movements towards the rim.
5. To remount the optics housing, screw on the lock ring and tighten it gently with the tool.
If this operation is performed properly, it will not a󹪜ect the alignment of the optics housing.
Note
Any work with the optical lens requires utmost care. The lens is anti-re󹪞ection coated and thus
very susceptible to scratches!
Replacing the sensor electronics
When performing service on the cross duct sensor electronics you must be ESD protected. Use
a wrist strap and ground it somewhere close to the optics housing. Put the strap around your
arm.
To replace the sensor electronics proceed as follows:
1. Remove the lid of the optics housing by rotating the lid counter-clockwise.
2. Disconnect the connector between the sensor card and the sensor connection cable.
3. Remove the two screws holding the card using a TORX20 screwdriver.
4. Carefully remove the card.
5. Replace the sensor electronics (detector module and/or sensor card).
Service and maintenance
6.2Service instructions
LDS 6 & Optics housing CD 6 Compact Operating Instructions
54 Compact Operating Instructions, 12/2022, A5E03314905-AB