Vahterus Plate - Page 27

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Problem Cause Checks Action NB
Pressure
dierence
Meas-
ureow
rates and
pressure
dierence
Temperature Compare
these
values to
the PSHE’s
thermo-
technical
data sheet
Liquidow Check pump
operation
Change
pump
Very poor
performance
and low
pressure
dierence
Flow director
damaged
by pressure
shock or
unsuitable
processuid
Check the
information
on the name
plate: are the
temperature,
and liquids
correct?
Check the
process
data if it is
available
Contact the
manufac-
turer
Problem Cause Checks Action NB!
Internal leak
(uidmix)
Plate
cracked due
to water
hammer
or thermal
shock
Check that
plate side
liquid is
visible on
shell side
(leakinguid
will be visible
on the outlet
pipe)
Contact
Vahterus
Hole in
plate due to
corrosion
Close plate
or shell side
valves and
use a metre
to see if the
pressure is
falling
Problem Cause Checks Action NB
External
leakage
between
cover plate
andange
(openable
model)
Leaking
gasket
Look for leak Tighten
bolts. If
retightening
does not
stop the
leak, remove
cover plate
and change
gasket
The Tech-
nical Data
sheet
contains
details of the
gasket. See
tightening
torque in
section 5.3.4