Endress+Hauser CCS50D Operating Instructions Manual page 36

Maintenance
Screw membrane cap onto sensor
‣
Screw membrane cap onto sensor shaft: hold sensor by the shaft. Keep valve clear.

 16 Screw on membrane cap: keep pressure relief valve clear.
1 Pressure relief valve
9.2.4 Storing the sensor
If measurement is suspended for a short period of time and it can be guaranteed that the
sensor will be kept moist while in storage:
1. If the assembly is guaranteed not to empty out,
you may leave the sensor in the flow assembly.
2. If there is a possibility that the assembly may empty out,
remove sensor from assembly .
3. To keep the membrane moist after the sensor has been removed, refill the protection
cap with electrolyte or clean water.
4. Fit protection cap on sensor →  37.
During longterm interruptions to measurement, particularly if dehydration is possible:
1. Remove sensor from assembly.
2. Clean sensor shaft and membrane cap with cold water and leave to dry.
3. Loosely screw on membrane cap up to the stop. This ensures that the membrane
remains slack.
4. Pour electrolyte or clean water into protection cap and attach →  36.
5. For recommissioning, follow the same procedure as for commissioning →  27.
Ensure that no biofouling occurs during longer interruptions to measurement. Remove
continuous organic deposits such as films of bacteria.
36
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CCS50D
A0034480
Endress+Hauser