Hyundai DHY22KSEm, Operation And Maintenance Manual

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