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.
(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.
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DRY AND
AIR
NITROGEN
GAS
▼ General Control of Refrigerating Cycle
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