LG GR-B206GVQA User Manual download pdf (Page 99)

Cooling

Cycle

Heavy

Repair

3-1.

The

Heavy

Repair

Standards

for

Refrigerator

with

R134a

Refrigerant

NOTE)

Please

contact

Songso

company

+82-53-554-2067

you

have

inquiry

heavy

repair

special

facility.

TROUBLE

DIAGNOSIS

-99-

NO.

Items

Unit

Standards

Purposes

Remarks

Pipe

and

piping

Min.

Pipe:within

hour.

protect

The

opening

time

should

reduced

system

opening

time.

Comp:within

Moisture

half

the

standards

during

rain

and

minutes.

Penetration.

rainy

seasons

(the

penetration

water

Drier:within

into

the

pipe

dangerous).

minutes.

Welding.

Nitrogen

Weld

under

protect

Refet

repair

note

each

part.

Pressure.

Nitrogen

oxide

scale

R134a

refrigerant

susceptible

atmosphere

formation.

leaks

than

R12

and

requires

care

(N2

pressure:

during

welding.

0.1~0.2

kg/cm2)

not

apply

force

pipes

before

and

after

welding

protect

pipe

from

cracking.

sealed

parts.

Confirm

air

leaking

protect

case

evaporator

parts,

doesn't

leak.

sounds

when

moisture

noise

when

removing

rubber

cap

blow

removing

rubber

penetration.

dry

air

gas

for

than

min

cap.

use

the

parts.

Sound:usable

sound:not

usable

Refrigeration

Evacuation

Min.

than

remove

Cycle.

time

minutes.

moisture.

Vacuum

Torr

Below

0.03(ref)

Note:Only

applicable

the

model

degree

equipped

with

reverse

flow

protect

plate.

Vacuum

High

and

low

Vaccum

efficiency

can

improved

Pressure

sides

are

operating

compressor

during

evacuation.

evacuated

the

same

time

for

models

above

200L

Vacuum

Use

R134a

protect

The

rubber

pipes

for

R12

refrigerant

shall

piping

exclusive

mixing

melted

when

they

are

used

for

R134a

manifold.

mineral

and

refrigerant(causes

leak).

ester

oils.

Pipe

Use

R134a

protect

coupler

cxclusive.

R12

Refri-

gerant

mixing.

Outlet

R134a

exclusive.

(Socket)

Plug

R134a

exclusive

Refrigerant

weighing.

Use

R134a

not

mix

not

weight

the

refrigerant

too

hot

exclusively.

with

R12

too

cold

area.(25°C

adequate.)

Weighing

refrigerant.

Use

copper

bombe

allowance:±5g

Socket:2SV

Plug:

2PV

R134a

Note:Winter:-5g

Note:Do

not

burn

O-ring

(rubber)

during

Summer:+5g

welding.

Drier

replacement.

-Use

R134a

exclusively

remove

for

R134a

refrigerator

the

moisture

-Use

R12

exclusively

from

pipe.

for

R12

refrigerator

-Replace

drier

whenever

repairing

refrigerator

cycle

piping.

Leak

check.

-Do

not

use

soapy

Detect

-Check

oil

leak

refrigerant

leak

area.

water

for

check.

refrigerant

Use

electronic

leak

detector

oil

leak

may

sucked

leak

area.

not

found.

into

the

pipe

by.

-The

electronic

leak

detector

very

sensitive

halogen

gas

the

air.

also

can

detect

R141b

urethane.

Please

practice,

therfore,

many

times

before

use.

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LG GR-B206GVQA User Manual Page 99

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