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forget that for glue free gaskets, gasket
sealing surfaces to be checked are at the top
as well as bottom surface of the gasket.
In many cases, fouling may be far too
tenacious. APV service centres around the
world may be approached for thorough
cleaning and inspection of the plate pack and
regasketing.
9.2.2 Cleaning-In-Place
Cleaning in place (CIP) is accomplished by
circulating a suitable cleaning solution through
the plate heat exchanger instead of opening it.
CIP works best in the reverse direction of
normal flow. Good results are also possible with
same direction flow and at higher velocities than
the product flow velocity.
The cleaning solution must be circulated at
sufficient velocity to flush out the product.
Higher viscosity products generally require
higher velocity flushing to properly clean.
The cleaning solution must be able to dissolve
the fouling on the plates and great care must be
taken to select a proper cleaning solution that
does not damage plates or gaskets.
Example of CIP-cleaning:
1
Drain product residues, cooling and heating
media.
2
Rinse with cold or lukewarm water.
3
Circulate warm cleaning fluid solution.
4
Rinse with warm water or warm water with
softener added.
5
Rinse with cold or lukewarm water.
Summary of Contents for APV ParaFlow
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