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Operation
AlfaNova 14–76, Part no. 34562191-03
Maintenance
General guidelines regarding maintenance
Plate Sheet material
Stainless steel can corrode. Chlorine ions are hazardous.
Avoid cooling brines containing chloride salts as NaCI and,
most harmful, CaCI
2
.
Note!
Rinse well!
Note!
Under no circumstances should hydrochloric acid be
used with stainless steel plates.
Water of more than 300 ppm Cl ions may not be used for
preparation of cleaning solutions.
Chlorine as a growth inhibitor
Note!
Chlorine, commonly used as a growth inhibitor in
cooling water systems, reduces the corrosion resistance of
stainless steels.
Chlorine weakens the protection layer of these steels making
them more susceptible to corrosion attacks than they otherwise
should be. It is a matter of time of exposure and concentration.
In every case where chlorination of the AlfaNova heat
exchanger cannot be avoided, your local representative must
be consulted.
Cleaning-In-Place
The Cleaning-In-Place (CIP) equipment permits cleaning of the
plate heat exchanger.
CIP performs:
•
cleaning of fouling and descaling of lime deposits
•
passivation of cleaned surfaces to reduce susceptibility to
corrosion
•
neutralisation of cleaning liquids before draining.
Follow the instructions of the CIP equipment.
The following CIP models can be used: CIP200L, CIP400L and
CIP800L
.
Cleaning
liquid
Description
AlfaCaus
A strong alkaline liquid, for removing paint, fat,
oil and biological deposits.
AlfaPhos
An acid cleaning liquid for removing metallic
oxides, rust, lime and other inorganic scale.
Includes an inhibitor for passivation.
AlfaNeutra
A strong alkaline liquid for neutralisation of
AlfaPhos before drainage.
Kalklöser P
An acidic cleaning powder with a corrosion
inhibitor particularly effective for removing of
calcium carbonate and other inorganic scale.
Neutra P
An alkaline powder for neutralisation of used
Kalklöser P prior to disposal.
