Endress+Hauser Flowfit CYA27, Руководство по эксплуатации

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Maintenance Flowfit CYA27
36 Hauser
The following methods and cleaning agents are recommended:
1. Remove light dirt and fouling using a cloth moistened with suitable cleaning
solutions.
2. Remove heavy soiling using a soft brush and a suitable cleaning agent.
3. For very persistent dirt, soak the parts in a cleaning solution. Then clean the parts
with a brush.
Cleaning agent
The choice of cleaning agent depends on the degree and type of contamination. The most
common types of contamination and the appropriate cleaning agents are listed in the
following table.
Type of soiling Cleaning agent
Greases and oils Hot water or water-soluble organic solvents (e.g.
ethanol)
Limescale deposits, metal
hydroxide buildup, lyophobic
biological buildup
Approx. 3% hydrochloric acid
Sulfide deposits Mixture of 3% hydrochloric acid and thiocarbamide
(commercially available)
Protein buildup Mixture of 3% hydrochloric acid and pepsin
(commercially available)
Fibers, suspended substances Pressurized water, possibly surface-active agents
Light biological buildup Pressurized water
L
CAUTION
Solvents
Solvents are harmful to health, may destroy plastic components of the sensor and are also
suspected carcinogens (e.g. chloroform)!
‣
Do not use any halogen-containing organic solvents or acetone.
NOTICE
Media containing surfactants
Damage to the sensor membrane!
‣
The sensor membrane must not come into contact with agents containing surfactants.
NOTICE
Isopropanol
Attacks PMMA!
‣
Do not use isopropanol.
Manual cleaning
For manual cleaning of the assembly, proceed as follows:
1. Take the measuring point out of operation (→  34).
2. Rinse and drain the assembly as required.
3. Remove the sensors.
4. Clean the assembly.
5. Install the sensors.