Nordson 3100V Series Customer Product Manual page 166

Maintenance
A 5-13
Table A
5-3
Advantages and Disadvantages of System Flushing Procedures
Flushing Procedure Time Needed
(See
Note A)
Best Used for...
(See Note B)
Advantages and
Disadvantages
Using hot melt material About
t
hour
Routine cleaning when the
system is relatively free of
char.
The advantage of this
method
is
that it requires
less
downtime.
However,
it is not as thorough as the
other two methods.
Using
a
flushing material
recommended by
your
adhesive supplier and
approved by
your Nordson
representative
From2ll2to
5 hours
Occasional cleaning when
there
is some
char
buildup.
Although
this method
requires more downtime,
it does a good
job of
removing char buildup
from the system.
However,
to
remove all
char
you may need to
scrub the
tank.
You will
also need to purchase and
store
flushing material,
which may have special
storage and disposal
requirements.
Using
Type
R
fluid
From
3
to
13 hours
Thorough cleaning when
there
is
significant char
buildup.
This procedure
is
the most
thorough way
to
remove I
char.
You may also need
to scrub the tank
to
remove allchar.
Disadvantages are that
you cannot flush Type
R
fluid through the hoses;
accidentally doing so can
cause later downtime.
Type
Fl
fluid is expensive
but can be reused several
times
if
the used fluid is
strained into
a
storage
container. The fluid
is
considered a regulated
waste.
NOTE
A:
Time needed varies depending on how much char must be removed.
B:
Because operating conditioris vary from plant to plant, you may find that more or less frequent flushing
is required.
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