LG HMC030KD1 Service Manual - Page 36

5.

TEST

RUNNING

1.

Check

that

all

tubing

and

wiring

have

been

properly

connected.

2.

Check

that

the

gas

and

liquid

side

service

valves

are

fully

open.

1.

Prepare

remote

control

/

Remove

the

battery

cover

by

pulling

it

according

to

the

arrow

direction.

Insert

new

batteries

making

sure

that

the

(+)

and

(—)

of

battery

are

installed

correctly.

1,

Reattach

the

cover

by

pushing

it

back

into

position.

NO'

1'

NOTE:

•

Use

2

AAA(1.5volt)

batteries.

Do

not

use

rechargeable

batteries.

•

Remove

the

batteries

from

the

remote

control

if

the

system

is

not

going

to

be

used

for

a

long

time.

2.

Settlement

of

outdoor

unit

■

Anchor

the

outdoor

unit

with

a

bolt

and

nut(o1Ornm)

tightly

and

horizontally

on

a

concrete

or

rigid

mount.

■

When

installing

on

the

wall,

roof

or

rooftop,

anchor

the

mounting

base

securely

with

a

nail

or

wire

assuming

the

influence

of

wind

and

earthquake.

■

In

the

case

when

the

vibration

of

the

unit

is

con-

veyed

to

the

hose,

secure

the

unit

with

an

anti

-vibration

rubber.

Bolt

Tubing

connection

3.

Evaluation

of

the

performance

Operate

unit

for

15-20

minutes,

then

check

the

sys-

tem

refrigerant

charge:

1.

Measure

the

pressure

of

the

gas

side

service

valve.

2.

Measure

the

temperature

of

the

intake

and

dis-

charge

of

air.

3.

Ensure

the

difference

between

the

intake

temper-

ature

and

the

discharge

is

more

than

8°C

(Cooling)

or

reversely

(Heating).

Discharge

air

Intake

temperature

Discharge

temperature

4.

For

reference;

the

gas

side

pressure

of

optimum

condition

is

as

below.(Cooling)

Outside

ambient

TEMP

The

pressure

of

the

gas

side

service

valve

35°C(95°F)

4-5kg/cm

2

G(56.8-71.0

P.S.I.G.)

NOTE:

If

the

actual

pressure

are

higher

than

shown,

the

system

is

most

likely

over

-charged,

and

charge

should

be

removed.

If

the

actual

pressure

are

lower

than

shown,

the

system

is

most

likely

under-

charged,

and

charge

should

be

added.

The

air

conditioner

is

now

ready

for

use.

NOTE:

Heating

capacity

decreases

as

outdoor

temper-

ature

decreases.

The

unit

can

work

below

to

14F

without

unit

out

or

system

shut

down.

—

PUMP

DOWN

This

is

performed

when

the

unit

is

to

be

relocated

or

the

refrigerant

circuit

is

serviced.

Pump

Down

means

collecting

all

refrigerant

in

the

out-

door

unit

without

loss

in

refrigerant

gas.

CAUTION:

Be

sure

to

perform

Pump

Down

procedure

with

the

unit

cooling

mode.

Pump

Down

Procedure

1.

Connect

a

low-pressure

gauge

manifold

hose

to

the

charge

port

on

the

gas

side

service

valve.

2.

Open

the

gas

side

service

valve

halfway

and

purge

the

air

from

the

manifold

hose

using

the

refrigerant

gas.

3.

Close

the

liquid

side

service

valve(all

the

way

in).

4.

Turn

on

the

unit's

operating

switch

and

start

the

cool-

ing

operation.

5.

When

the

low-pressure

gauge

reading

becomes

1

to

0.5kg/cm

2

G(14.2

to

7.1

P.S.I.G.),

fully

close

the

gas

side

valve

stem

and

then

quickly

turn

off

the

unit.

At

that

time,

Pump

Down

has

been

completed

and

all

refrigerant

gas

will

have

been

collected

in

the

outdoor

unit.

-

36

-

LG HMC030KD1 Service Manual - Page 36

Running

Page 36 highlights