LG LTN16385PL, Руководство по обслуживанию

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6-6. GENERAL CONTROL OF REFRIGERATING CYCLE
NO. ITEMS SPECIFICATIONS REMARKS
H ç 0 Chemical composition.
Ag: 30%, Cu: 27%, Zn: 23%, Cd: 20%
Welding temperature: 710~840°
CBcuP2 Chemical composition.
Cu: About 93%
P: 6.8~7.5%
Rest: 0.2%
Welding temperature:
735~840°C
2 FLUX
Composition and preparation:
Borax 30%
Borax 35%
Fluoride Kalium: 35%
Water: 4%
Mix ingredients and boil until the liquid
becomes
Prepare only the amount daily. Life time: 1 day.
Closing the container cover to prevent dirt from
mixing with the flux.
Store in a stainless steel container.
3 DRIER ASSEMBLY Assembly the dryer in a period no longer
than 30 minutes after unpacking.
Maintaining the dryer unpacked to a
temperature of 80 ~ 100 ° C.
Not having the dryer on the outside because it
could be damaged by the moisture.
4 VACUUM When calculating loading machine with a
vacuum gauge vacuum gauge should be
around 1 Torr.
If the vacuum cycle is:
-10Torr low pressure and 20 Torr high
pressure, indicating no leak.
The vacuum gauge of the pump must be
less than 0.05 Torr after 5 minutes.
The vacuum gauge should have the same
value as in (2) for 20 minutes.
Use a vacuum gauge without failure.
Perform vacuum operation up to a proper
degree of vacuum (-8 ~ -10 Torr).
If not reached a suitable degree of vacuum, it's
necessary to check the leaks in the cycle and
the adapter connection.
5 AIR DRY &
NITROGEN GAS
Air dry pressure should be between
12~16Kg/cm.
Temperature should be between
20 ~ -70°C.
Keep the pressure between 12~6Kg/cm
when the air be substituted by nitrogen gas.
6 NIPLE & COPLE Check leaks using water with soap.
Replace the coupling in case of leaks. Check if gas is leaking in connection coupling.
7 PIPE Placing all the cooper connecting tubes in a
clean box and close it to prevent dust and
moisture.
1 Recommended H34 containing 34% Ag in the
service center. ROD WELDING