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User manual
7
very
important.
Noise
reduction
engineering
is
a
comprehensive
and
professional
engineering.
During
the
process
when
users
try
to
design
the
scheme
for
noise
reduction
project,
at
the
same
time
please
fully
consider
the
bottom
limit
of
air
inlet/outlet
volume
needed
by
engine’s
normal
running
and
the
maximum
allowed
value
for
exhaust
backpressure
etc.
Otherwise,
the
noise
reduction
project
will
seriously
affect
generator
set’s
output
power,
and
make
generator
set’
s
temperature
rise,
cause
frequent
malfunction
of
the
generator
set,
and
even
it
will
shorten
the
life
expectancy
of
generator
set.
Note:
HYUNDAI
Power
can
provide
customers
with
overall
sound
proof
generator
set.
2.6
Cooling
system
Our
standard
configuration
diesel
generator
sets
are
closed
cycling
water
chilling
units
with
fan
and
radiator
installed.
Closed
water
chilling
engine
drive
the
cooling
pump
to
generate
circulation
power,
which
keep
the
anti
‐
freeze
in
the
paths
of
cylinder
body
and
cover
continuous
circulation
and
heat
elimination.
Engine’s
cooling
pump,
radiator
(or
heat
exchanger)
forms
a
closed,
pressure
cycling
and
cooling
system.
The
most
common
cooling
system
is
cooling
fan
directly
driven
by
radiator
and
engine,
which
can
be
replaced
by
heat
exchanger,
remote
radiator
or
remote
cooling
tower
etc.
If
the
installation
position
of
the
remote
cooling
fan
is
relatively
higher,
transmission
radiator
is
needed
to
prevent
the
damage
of
heat
exchanger
caused
by
too
big
internal
pressure.
Note:
The
dirty
material
stay
in
the
radiator’s
core
will
greatly
affect
radiator’s
cooling
capacity.
And
therefore
it
is
necessary
to
clean
the
radiator
often.
2.6.1
Coolant
Cooling
system
shall
use
the
coolant
which
can
protect
the
engine
from
contamination
and
freezing.
Coolant
shall
be
a
mixture
of
pure
water
and
anti
‐
freeze
or
pure
water
and
anti
‐
rust
fluid.
In
this
mixture,
water
PH
value
shall
be
between
6
~
8,
usually
suggest
to
use
distilled
water.
The
specific
mixing
ratio
shall
be
according
to
local
weather,
and
that
of
the
coolant
recommended
by
the
engine
supplier,
and
reference
to
the
operation
(preparation)
manual
of
the
coolant.
Mix
the
liquids
in
a
separate
container
evenly
and
then
add
the
mixture
into
the
radiator,
ensure
the
anti
‐
freeze
will
not
freeze
under
low
temperature.
In
the
area
when
there
is
low
possibility
of
freezing,
the
coolant
can
be
a
mixture
of
water
and
anti
‐
rust,
according
to
the
anti
‐
rust
which
recommended
by
the
engine
supplier
and
refer
to
its
operation
manual,
mix
the
liquids
in
a
separate
container
evenly
and
then
add
the
mixture
into
the
radiator.
At
the
first
time
when
anti
‐
rust
is
added,
the
generator
set
shall
be
kept
running
until
it
get
to
hot
so
that
to
achieve
the
best
effect
of
anti
‐
corrosion.
Engine’s
coolant
shall
have
three
functions
listed
as
below:
◆
Provide
enough
heat
transmission
capacity
◆
Prevent
all
metal
material
and
sealing
material
within
the
cooling
system
from
corrosion(Cave
corrosion)
◆
Provide
sufficient
anti
‐
freeze
capacity
Warning:
!
To
choose
the
anti
‐
freeze
which
is
recommended
and
approved
by
the
qualified
engine
supplier
is
the
critical
point
to
ensure
engine’s
normal
running.
!
Do
not
mix
the
anti
‐
freeze
and
anti
‐
rust
of
any
types,
this
will
generate
a
large
amount
of
bubble
and
reduce
the
coolant’s
performance.
!
If
the
anti
‐
freeze
used
in
the
generator
set
is
of
bad
quality
and
not
approved
by
the
engine
supplier,
which
cause
the
malfunction
of
the
generator
set
(water
leakage,
contamination
and
etc.),
this
malfunction(s)
does
not
belong
to
the
scope
of
warranty.
2.6.2
Change
of
coolant
The
effect
of
anti
‐
freeze
and
anti
‐
rust
will
decrease
by
the
time
period
of
service.
And
therefore
periodically
change
of
anti
‐
freeze
is
a
must.
The
mixture
of
anti
‐
freeze
shall
be
changed
in
every
two
years.
The
mixture
of
anti
‐
rust
shall
be
changed
at
least
one
time
every
year.
And
if
filter
of
the
coolant
is
installed,
at
least
this
filter
shall
be
changed
in
every
half
of
year
(please
refer
to
the
engine
operation
manual
for
the
specific
intervals
of
the
changes
required).
When
it
is
time
to
discharge
the
coolant,
make
sure
the
generator
set
has
been
shut
down
and
the
engine
has
been
fully
cooled
down,
then
open
the
radiator’s
liquid
adding
hole.
After
that
open
the
discharge
valve
installed
in
the
radiator
and
in
the
engine
respectively
to
discharge
the
water.
If
the
generator
set
is
furnished
with
coolant
filter,
it
shall
be
detached
from
the
engine
and
be
changed.
2.6.3
Cleaning
of
cooling
system
Summary of Contents for DHY11KSE
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