• General Control of Refrigerating Cycle
NO. ITEMS CONTENTS AND SPECIFICATIONS
WELDING
ROD
4
FLUX
DRIER
ASM
VACUUM
DRY AND
AIR
NITROGEN
GAS
(1) H 30
• Chemical Ingredients
Ag: 30%, Cu: 27%, Zn: 23%, Cd: 20%
• Brazing Temperature: 710-840°C
(2) Bcup-2
• Chemical Ingredients
Cu: About 93%
P: 6.8-7.5%
The rest: within 0.2%
• Brazing Temperature: 735-840°C
• Ingredients and how to make
Borax 30%
Borax 35%
Fluoridation kalium: 35%
Water: 4%
Mix the above ingredients and boil until
they are transformed into liquid.
(1) Assemble the drier immediately
after unpacking.
(2) Keep the unpacked drier at the temperature
of 80-100°C.
(1) When measuring with pirant Vacuum
gauge of charging MIC, vacuum
degree is within 0.5 Tom
(2) If the vacuum degree of the cycle inside is
10 Torr. below for low pressure and 20 Torr.
for high pressure, it says no vacuum
leakage state.
(3) Vacuum degree of vacuum pump must be
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 thepressureto 12-6Kg/cm 2 also
when substitutingdryairforNitrogenGas.
REMARKS
•Recommend H34 containing 34% Ag in the
Service Center.
NIPPLE (1) Check if gas leaks with soapy water. • Check if gas leaks from connecting part of
6 AND (2) Replace Quick Coupler in case of leakage. Coupler.
COUPLER (3) When using couplers, use applicable them in
accordance with Refrigerant.
PIPE • Put all Joint Pipe in a clean box and
7 cover tightly with the lid so that dust or
humidity is not inserted.
-17-
• Don't keep the drier in a outdoor because
humidity damages to it.
•Apply M/C Vacuum Gauge without fail.
•Perform vacuum operation until a proper
vacuum degree is built up.
• If a proper vacuum degree isn't built up,
check the leakage from
the Cycle Pipe line part and
Quick Coupler Connecting part.
•Make amount for only a day.
Holding period: 1 day
•Close the cover of container to prevent dust
putting in the FLUX.
• Keep it in a stainless steel container.
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