Alfa Laval M line TS6, Instruction Manual

Page: 30 / 46

WARNING
Corrosive cleaning liquids. Can cause serious injuries to skin and eyes!
Sterilisation is performed immediately before starting the next production
cycle. Refer to
Sterilisation on page 30
Flow rates
The flow rate during the cleaning of the product side should always be at least
the same as the production’s flow rate. An increased flow rate may be required
in some cases, e.g. in milk sterilisation and the processing of viscous liquids or
liquids containing particles.
Recommended limits for cleaning solutions:
• 5% by volume AlfaCaus at max. 70°C
• 0.5% by weight acid solution at max. 70°C
For detailed information regarding cleaning and sterilisation contact an Alfa
Laval representative.
Sterilisation
The methods of sterilisation below are recommendations. Instructions for
sterilisation can also be included in the documentation of the complete system
delivered with the heat exchanger as one part.
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
minutes. 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
200000423-1-EN-GB 30
6 Maintenance EN