CCS240/241
Maintenance
Hauser
23
9
Maintenance
Please note the information on the safety data sheet to ensure safe use of the electrolyte.
Take all the necessary precautions in time to ensure the operational safety and reliability of
the entire measuring system.
NOTICE
Effects on process and process control!
‣
When carrying out any work on the system, bear in mind any potential impact this could
have on the process control system and the process itself.
‣
For your own safety, only use genuine accessories. With genuine parts, the function,
accuracy and reliability are also ensured after maintenance work.
9.1
Maintenance schedule
1. Check the measurement at regular intervals; depending on the prevailing conditions,
at
least once a month
.
2. Clean the sensor if the membrane is visibly soiled ((→ 23)).
3. Replace the electrolyte
once per season or every 12 months
or depending on the
chlorine content on site.
4. Calibrate the sensor if desired or when necessary ((→ 19)).
9.2
Maintenance tasks
9.2.1
Cleaning the sensor
L
CAUTION
Diluted hydrochloric acid
Hydrochloric acid causes irritation if it comes into contact with the skin or eyes.
‣
When using diluted hydrochloric acid, wear protective clothing such as gloves and goggles.
‣
Avoid splashes.
NOTICE
Chemicals that reduce surface tension
Chemicals that reduce surface tension can penetrate the sensor membrane and cause
measuring errors due to clogging.
‣
Do not use any chemicals that reduce surface tension.
If the membrane is visibly soiled, proceed as follows:
1. Remove sensor from flow assembly.
2. Clean the membrane by mechanical means only, using a gentle water jet. Alternatively,
place it for several minutes in 1 to 5% hydrochloric acid without any other chemical
additives.
3. If cleaning in hydrochloric acid, rinse off the hydrochloric acid with plenty of water.