LG GR-V389SQF Service Manual ▷ View online
NO.
ITEMS
CONTENTS AND SPECIFICATIONS
REMARKS
WELDINg
(1) H 30
ROD
(1)
¥ Chemical Ingredients
¥ Recommend H34 containing 34% Ag in the
(1) ¥
Ag: 30%, Cu: 27%, Zn: 23%, Cd: 20%
¥
Service Center.
(1)
¥ Brazing Temperature: 710~840¡C
(2) Bcup-2
(1)
¥ Chemical Ingredients
(1) ¥
Cu: About 93%
(1) ¥
P: 6.8~7.5%
(1) ¥
The rest: within 0.2%
(1)
¥ Brazing Temperature: 735~840¡C
FLUX
(1)
¥ Ingredients and how to make
¥ Make amount for only day.
( 1 )
(1) ¥¥
Borax 30%
¥
Holding period: 1 day
(1) ¥¥
Borax 35%
¥ Close the cover of container to prevent dust
(1) ¥
Fluoridation kalium: 35%
¥
putting in the FLUX.
(1) ¥
Water: 4%
¥ Keep it in a stainless steel container.
(1) ¥
Mix the above ingredients and boil until
(1) ¥
they are transformed into liquid.
DRIER
(1) Assemble the drier within 30min.
¥ Don't keep the drier in a outdoors because
ASM
(1)
after unpacking.
¥
humidity damages to it.
(2) Keep the unpacked drier at the temperature
of 80~100¡C.
VACUUM
(1) When measuring with pirant Vacuum
¥ Apply M/C Vacuum Gauge without fail.
(1 )
gauge the charging M/C, vacuum
¥ Perform vacuum operation until a proper
(1 )
degree is within 1 Torr.
¥
vacuum degree is built up.
(2) If the vacuum degree of the cycle inside is
¥ If a proper vacuum degree isn't built up,
¥
(2)
10 Torr. below for low pressure and 20 Torr.
¥
check the leakage from
(2)
for high pressure, it says no vacuum
¥
the Cycle Pipe line part and
(2)
leakage state.
¥
Quick Coupler Connecting part.
(3) Vacuum degree of vacuum pump must be
(3)
0.05 Torr. below after 5 min.
(4) Vacuum degree must be same to the
value described item (2) above for more than
20 min.
20 min.
(1) The pressure of dry air must be more
han 12~16kg/cm
2
(2) Temperature must be more than
-20
~ -
70¡C.
(3) Keep the pressure at 12~6kg/cm
2
also
(3)
when substituting dry air for Nitrogen Gas.
NIPPLE
(1) Check if gas leaks with soapy water.
¥ Check if gas leaks from joint of the
AND
(2) Replace Quick Coupler in case of leakage.
¥
Coupler.
COUPLER
PIPE
(1)
¥ Put all Joint Pipes in a clean box and
(1)¥
cover tightly with the lid so that dust or
(1)¥
humidity is not inserted.
1
2
3
4
5
6
7
DRY AND
AIR
NITROGEN
GAS
AIR
NITROGEN
GAS
▼ General Control of Refrigerating Cycle
- 16 -
NO.
ITEMS
CONTENTS AND SPECIFICATIONS
REMARKS
WELDINg
(1) H 30
ROD
(1)
¥ Chemical Ingredients
¥ Recommend H34 containing 34% Ag in the
(1) ¥
Ag: 30%, Cu: 27%, Zn: 23%, Cd: 20%
¥
Service Center.
(1)
¥ Brazing Temperature: 710~840¡C
(2) Bcup-2
(1)
¥ Chemical Ingredients
(1) ¥
Cu: About 93%
(1) ¥
P: 6.8~7.5%
(1) ¥
The rest: within 0.2%
(1)
¥ Brazing Temperature: 735~840¡C
FLUX
(1)
¥ Ingredients and how to make
¥ Make amount for only day.
( 1 )
(1) ¥¥
Borax 30%
¥
Holding period: 1 day
(1) ¥¥
Borax 35%
¥ Close the cover of container to prevent dust
(1) ¥
Fluoridation kalium: 35%
¥
putting in the FLUX.
(1) ¥
Water: 4%
¥ Keep it in a stainless steel container.
(1) ¥
Mix the above ingredients and boil until
(1) ¥
they are transformed into liquid.
DRIER
(1) Assemble the drier within 30min.
¥ Don't keep the drier in a outdoors because
ASM
(1)
after unpacking.
¥
humidity damages to it.
(2) Keep the unpacked drier at the temperature
of 80~100¡C.
VACUUM
(1) When measuring with pirant Vacuum
¥ Apply M/C Vacuum Gauge without fail.
(1 )
gauge the charging M/C, vacuum
¥ Perform vacuum operation until a proper
(1 )
degree is within 1 Torr.
¥
vacuum degree is built up.
(2) If the vacuum degree of the cycle inside is
¥ If a proper vacuum degree isn't built up,
¥
(2)
10 Torr. below for low pressure and 20 Torr.
¥
check the leakage from
(2)
for high pressure, it says no vacuum
¥
the Cycle Pipe line part and
(2)
leakage state.
¥
Quick Coupler Connecting part.
(3) Vacuum degree of vacuum pump must be
(3)
0.05 Torr. below after 5 min.
(4) Vacuum degree must be same to the
value described item (2) above for more than
20 min.
20 min.
(1) The pressure of dry air must be more
han 12~16kg/cm
2
(2) Temperature must be more than
-20
~ -
70¡C.
(3) Keep the pressure at 12~6kg/cm
2
also
(3)
when substituting dry air for Nitrogen Gas.
NIPPLE
(1) Check if gas leaks with soapy water.
¥ Check if gas leaks from joint of the
AND
(2) Replace Quick Coupler in case of leakage.
¥
Coupler.
COUPLER
PIPE
(1)
¥ Put all Joint Pipes in a clean box and
(1)¥
cover tightly with the lid so that dust or
(1)¥
humidity is not inserted.
1
2
3
4
5
6
7
DRY AND
AIR
NITROGEN
GAS
AIR
NITROGEN
GAS
▼ General Control of Refrigerating Cycle
- 16 -
NO.
ITEMS
CONTENTS AND SPECIFICATIONS
REMARKS
WELDINg
(1) H 30
ROD
(1)
¥ Chemical Ingredients
¥ Recommend H34 containing 34% Ag in the
(1) ¥
Ag: 30%, Cu: 27%, Zn: 23%, Cd: 20%
¥
Service Center.
(1)
¥ Brazing Temperature: 710~840¡C
(2) Bcup-2
(1)
¥ Chemical Ingredients
(1) ¥
Cu: About 93%
(1) ¥
P: 6.8~7.5%
(1) ¥
The rest: within 0.2%
(1)
¥ Brazing Temperature: 735~840¡C
FLUX
(1)
¥ Ingredients and how to make
¥ Make amount for only day.
( 1 )
(1) ¥¥
Borax 30%
¥
Holding period: 1 day
(1) ¥¥
Borax 35%
¥ Close the cover of container to prevent dust
(1) ¥
Fluoridation kalium: 35%
¥
putting in the FLUX.
(1) ¥
Water: 4%
¥ Keep it in a stainless steel container.
(1) ¥
Mix the above ingredients and boil until
(1) ¥
they are transformed into liquid.
DRIER
(1) Assemble the drier within 30min.
¥ Don't keep the drier in a outdoors because
ASM
(1)
after unpacking.
¥
humidity damages to it.
(2) Keep the unpacked drier at the temperature
of 80~100¡C.
VACUUM
(1) When measuring with pirant Vacuum
¥ Apply M/C Vacuum Gauge without fail.
(1 )
gauge the charging M/C, vacuum
¥ Perform vacuum operation until a proper
(1 )
degree is within 1 Torr.
¥
vacuum degree is built up.
(2) If the vacuum degree of the cycle inside is
¥ If a proper vacuum degree isn't built up,
¥
(2)
10 Torr. below for low pressure and 20 Torr.
¥
check the leakage from
(2)
for high pressure, it says no vacuum
¥
the Cycle Pipe line part and
(2)
leakage state.
¥
Quick Coupler Connecting part.
(3) Vacuum degree of vacuum pump must be
(3)
0.05 Torr. below after 5 min.
(4) Vacuum degree must be same to the
value described item (2) above for more than
20 min.
20 min.
(1) The pressure of dry air must be more
han 12~16kg/cm
2
(2) Temperature must be more than
-20
~ -
70¡C.
(3) Keep the pressure at 12~6kg/cm
2
also
(3)
when substituting dry air for Nitrogen Gas.
NIPPLE
(1) Check if gas leaks with soapy water.
¥ Check if gas leaks from joint of the
AND
(2) Replace Quick Coupler in case of leakage.
¥
Coupler.
COUPLER
PIPE
(1)
¥ Put all Joint Pipes in a clean box and
(1)¥
cover tightly with the lid so that dust or
(1)¥
humidity is not inserted.
1
2
3
4
5
6
7
DRY AND
AIR
NITROGEN
GAS
AIR
NITROGEN
GAS
▼ General Control of Refrigerating Cycle
- 16 -
NO.
ITEMS
CONTENTS AND SPECIFICATIONS
REMARKS
WELDINg
(1) H 30
ROD
(1)
¥ Chemical Ingredients
¥ Recommend H34 containing 34% Ag in the
(1) ¥
Ag: 30%, Cu: 27%, Zn: 23%, Cd: 20%
¥
Service Center.
(1)
¥ Brazing Temperature: 710~840¡C
(2) Bcup-2
(1)
¥ Chemical Ingredients
(1) ¥
Cu: About 93%
(1) ¥
P: 6.8~7.5%
(1) ¥
The rest: within 0.2%
(1)
¥ Brazing Temperature: 735~840¡C
FLUX
(1)
¥ Ingredients and how to make
¥ Make amount for only day.
( 1 )
(1) ¥¥
Borax 30%
¥
Holding period: 1 day
(1) ¥¥
Borax 35%
¥ Close the cover of container to prevent dust
(1) ¥
Fluoridation kalium: 35%
¥
putting in the FLUX.
(1) ¥
Water: 4%
¥ Keep it in a stainless steel container.
(1) ¥
Mix the above ingredients and boil until
(1) ¥
they are transformed into liquid.
DRIER
(1) Assemble the drier within 30min.
¥ Don't keep the drier in a outdoors because
ASM
(1)
after unpacking.
¥
humidity damages to it.
(2) Keep the unpacked drier at the temperature
of 80~100¡C.
VACUUM
(1) When measuring with pirant Vacuum
¥ Apply M/C Vacuum Gauge without fail.
(1 )
gauge the charging M/C, vacuum
¥ Perform vacuum operation until a proper
(1 )
degree is within 1 Torr.
¥
vacuum degree is built up.
(2) If the vacuum degree of the cycle inside is
¥ If a proper vacuum degree isn't built up,
¥
(2)
10 Torr. below for low pressure and 20 Torr.
¥
check the leakage from
(2)
for high pressure, it says no vacuum
¥
the Cycle Pipe line part and
(2)
leakage state.
¥
Quick Coupler Connecting part.
(3) Vacuum degree of vacuum pump must be
(3)
0.05 Torr. below after 5 min.
(4) Vacuum degree must be same to the
value described item (2) above for more than
20 min.
20 min.
(1) The pressure of dry air must be more
han 12~16kg/cm
2
(2) Temperature must be more than
-20
~ -
70¡C.
(3) Keep the pressure at 12~6kg/cm
2
also
(3)
when substituting dry air for Nitrogen Gas.
NIPPLE
(1) Check if gas leaks with soapy water.
¥ Check if gas leaks from joint of the
AND
(2) Replace Quick Coupler in case of leakage.
¥
Coupler.
COUPLER
PIPE
(1)
¥ Put all Joint Pipes in a clean box and
(1)¥
cover tightly with the lid so that dust or
(1)¥
humidity is not inserted.
1
2
3
4
5
6
7
DRY AND
AIR
NITROGEN
GAS
AIR
NITROGEN
GAS
▼ General Control of Refrigerating Cycle
- 16 -