Endress+Hauser Flowfit CUA252, Руководство по эксплуатации

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Maintenance Flowfit CUA252
16 Hauser
5.3 Cleaning agent
The choice of cleaning agent depends on the degree and type of fouling. The most common
types of dirt and fouling and the suitable cleaning agents are listed in the following table.
CAUTION
!
Solvents can pose a health hazard
‣
Never use acetone or any organic solvents containing halogens. Such solvents can
damage plastic parts and some are suspected of causing cancer (e.g. chloroform).
5.4 Checking and replacing the seals
Check the seals at regular intervals and replace the seals where necessary.
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Fig. 9: Position of the seals
1 Clamp seal
2 O-rings
The seals are available as a spare parts kit (see the "Spare parts kits" section).
Type of fouling Cleaning agent
Greases and oils Agents containing surfactants (alkaline agents) or water-soluble
organic solvents (halogen-free, 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 agent
Light biological buildup Pressurized water
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