t General Control of Refrigerating Cycle
NO.ITEMSCONTENTS AND SPECIFICATIONSREMARKS
WELDING (1) H 30
ROD(1) Y Chemical IngredientsY Recommend H34 containing 34% Ag in the
(1) Y Ag: 30%, Cu: 27%, Zn: 23%, Cd: 20%Y Service Center.
(1) Y Brazing Temperature: 710~840!C
(2) Bcup-2
1
(1) Y Chemical Ingredients
(1) Y Cu: About 93%
(1) Y P: 6.8~7.5%
(1) Y The rest: within 0.2%
(1) Y Brazing Temperature: 735~840!C
FLUX(1) Y Ingredients and how to makeY Make amount for only day. (1)
(1) YYBorax 30%Y Holding period: 1 day
(1) YYBorax 35%Y Close the cover of container to prevent dust
2(1) Y Fluoridation kalium: 35%Y putting in the FLUX.
(1) Y Water: 4%Y Keep it in a stainless steel container.
(1) Y Mix the above ingredients and boil until
(1) Y they are transformed into liquid.
DRIER(1) Assemble the drier within 30min.Y Don't keep the drier in a outdoors because
ASM(1) after unpacking.Y humidity damages to it.
(2) Keep the unpacked drier at the temperature3
of 80~100!C.
VACUUM(1) When measuring with pirant Vacuum Y Apply M/C Vacuum Gauge without fail.
(1 )gauge the charging M/C, vacuum Y Perform vacuum operation until a proper
(1 )degree is within 1 Torr.Y vacuum degree is built up.
(2) If the vacuum degree of the cycle inside isY If a proper vacuum degree isn't built up,Y
(2) 10 Torr. below for low pressure and 20 Torr.Y check the leakage from
(2) for high pressure, it says no vacuum Y the Cycle Pipe line part and4
(2) leakage state.Y 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.
DRY AND(1) The pressure of dry air must be more
AIRhan 12~16kg/cm2
NITROGEN(2) Temperature must be more than
GAS-20~-70!C.5
(3) Keep the pressure at 12~6kg/cm2 also
(3) when substituting dry air for Nitrogen Gas.
NIPPLE(1) Check if gas leaks with soapy water. Y Check if gas leaks from joint of the
6AND(2) Replace Quick Coupler in case of leakage.Y Coupler.
COUPLER
PIPE(1)Y Put all Joint Pipes in a clean box and
7(1)Y cover tightly with the lid so that dust or
(1)Y humidity is not inserted.
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ACEC
