Cleanfit CPA871 Maintenance
Endress+Hauser 49
Interval Maintenance measures
1. Inspect the sensor.
2. Disassemble the sensor.
3. Check the sensor for deposits.
4. If deposits are found: check the cleaning cycle (cleaning media,
temperature, duration, flow rate).
When process pressure is applied and cleaning disabled, there should
be no discharge of medium from the assembly's rinse chamber outlet.
‣
Check for defective process seal(s).
Biannually
or after 5000 strokes (whichever comes first)
‣
Clean the assembly thoroughly.
‣
Remove the residual medium.
‣
Replace all seals in contact with the medium.
‣
Clean the retraction pipe.
‣
Lubricate the retraction pipe.
1. Check mobility of retraction protection.
2. Remove the sensor.
The contact surface of the sensor in the assembly is
spring-loaded and must be free to move.
Possible cause of failure: contamination inside the drive, e.g. caused by
a broken sensor.
8.2 Maintenance tasks
8.2.1 Cleaning agent
L
WARNING
Organic solvents containing halogens
Limited evidence of carcinogenicity! Dangerous for the environment with long-term effects!
‣
Do not use organic solvents that contain halogens.
L
WARNING
Thiocarbamide
Harmful if swallowed! Limited evidence of carcinogenicity! Possible risk of harm to the unborn
child! Dangerous for the environment with long-term effects!
‣
Wear protective goggles, protective gloves and appropriate protective clothing.
‣
Avoid all contact with the eyes, mouth and skin.
‣
Avoid discharge into the environment.
The most common types of soiling and the appropriate cleaning agents in each case are
shown in the following table.
Pay attention to the material compatibility of the materials to be cleaned.
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