SPX APV ParaFlow, Инструкция по эксплуатации

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2.4 APV DuoSafety – double wall plates
The APV DuoSafety heat exchanger plate is
a double wall plate manufactured from two
loose plates pressed together to form a
DuoSafety plate. Each APV DuoSafety plate
pair is equipped with a non-glue gasket,
which seals and holds the plates together.
The two plates can be made of the same or
different materials.
The space between the two plates of the
APV DuoSafety plate pair serves as a safety
zone in case of through-plate leaks. Should a
leak occur in this safety zone (i.e. because of
corrosion, wear or age of seals), this space
provides an extra security against mixing of
the two liquids. The liquid will be discharged
from the space between the two walls into
the atmosphere and avoid cross-
contamination.
When leakage from a plate heat exchanger
containing DuoSafety plates is observed,
immediate action must be taken to detect
and replace the defective items before
corrosion or wear can proceed through both
plate walls and pose a risk of contamination.
If a DuoSafety heat exchanger is fitted with a
spray screen, it may be necessary to
regularly remove the screen to observe that
the plate pack edges have no tell-tale sign of
leakage. A visual check should be made at
least every 3 months.
Ì
! Leakage from a DuoSafety plate is
always the early warning for the user to act.
L
Note!: DuoSafety plates often use special
gaskets which can be confused with gaskets
meant for single plates which look similar.
Please confirm with APV that you have the
correct gaskets