Method
Instructions
By heat
Circulate water of 90°C until all parts of the system
have been kept at the required temperature for at
least ten minutes.
Chemically by hypochlorite
Before introducing the hypochlorite solution, make
sure that the equipment is clean, has cooled down
and is free from deposits and that no acid residues
are left.
Gradually add 100 cm
3
of hypochlorite solution,
containing max. 150 g/l of active chlorine to 100 l of
circulating water at a max. temperature of 20°C.
Treat for five minutes, up to maximum of 15 mi-
nutes. Rinse well after sterilisation.
Typical cleaning programs
Consult your local Alfa Laval representative for advice on suitable cleaning
programmes.
Table 1: Coolers
Products rich in protein
Daily
Weekly
Rinsing 5 min
Rinsing 5 min
Lye 20 min
Acid 15 min
Rinsing 10 min
Rinsing 5 min
Stop
Lye 20 min
Sterilisation 10 min
Rinsing 10 min
Stop
Sterilisation
Table 2: Pasteurisers and other heaters
Products rich in protein
Daily
Rinsing 5 min
Acid 15 min
Rinsing 5 min
Lye 20 min
Rinsing 5 min
1
Acid 15 min
2
Rinsing 10 min
Stop
1 The need for an additional acid cycle in order to remove
calcium carbonate scaling depends on the product. In
many cases, it is possible to carry out cleaning at consid-
erably longer intervals. Sometimes, it is possible to elimi-
nate acid cleaning altogether.
2 The need for an additional acid cycle in order to remove
calcium carbonate scaling depends on the product. In
many cases, it is possible to carry out cleaning at consid-
erably longer intervals. Sometimes, it is possible to elimi-
nate acid cleaning altogether.
Table 3: High content of insoluble components, for example nectar and tomato juice
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Maintenance 6
EN