ISEmax CAS40D
Maintenance
Hauser
15
6
Maintenance
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, take into account possible repercussions for process
control or 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.
6.1
Maintenance schedule
The intervals indicated are average empirical values and can be shorter or longer depending on
the operating conditions. You, or the plant operator, are responsible for adapting the intervals
to suit your conditions.
6.2
Cleaning the membrane
If the membrane is very contaminated, you have to clean it regardless of the maintenance intervals.
• Do not touch the membrane with your hands.
• Use a clean tissue and water for cleaning purposes.
The optional chloride electrode has a crystal instead of a membrane.
To clean it, place some sandpaper (600-grit) on an even surface. Now rub the sensor with the
crystal area facing downwards on the paper until all residues of fouling are removed (visual
inspection, rubbing the sensor for a few seconds usually suffices).
6.3
Replacing membrane cap and electrolyte
NOTICE
Sensor out of medium for longer than 15 minutes and did not wait for conditioning
Results in measurement errors
►
After submerging the sensor in the medium, you must allow it time for conditioning. Allow
approx. 1 hour for this.
Removing the electrode
1.
Remove the sensor from the medium.
2.
Clean the sensor with water.
3.
Release and remove the protection guard (
4.
Unscrew the coupling nut (
9).
5.
Pull the electrode holder out of the sensor and release the electrode cable (
6.
Remove the electrode using an open-end or socket wrench, SW17 (
Cleaning
Membrane cap and electrolyte
replacement
Crystal
polishing
Replacing
Maintenance
interval
Membrane
Ammoniu
m
Nitrate
Potassium
Chloride
pH
electrode
O-ring
Fortnightly
X
Biannually
X
X
X
Annually
X
X
X
