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General Control of Refrigerating Cycle
NO.
ITEMS
CONTENTS AND SPECIFICATIONS
REMARKS
WELDING
ROD
2
FLUX
(f)H 30
• Chemical
Ingredients
Ag: 30%, Ce: 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.
• Recommend H34 containing 34% Ag in the
Service Center.
• Make amount for only day.
Holding period: I day
• Close the cover of container to prevent dust
putting in the FLUX.
• Keep it in a stainless steel container.
DRIER
(1) Assemble the drier within 3Omin.
• Don't keep the drier in a outdoors because
ASM
after unpacking,
humidity damages to it.
3
(2) Keep the unpacked drier at the temperature
of 80-100°C.
VACUUM
(1) When measuring with pirant Vacuum
gauge the charging M/C, vacuum
degree is within 1 Torr.
(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.
• 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.
4
DRY AND
(1) The pressure of dry air must be more
AIR
han 12-16kg/crn2
NITROGEN
i (2) Temperature
must be more than
5
GAS
-20~ -70°C.
(3) Keep the pressure at 12-6kg/cm 2 also
when substituting dry air for Nitrogen Gas.
NIPPLE
(1) Check if gas leaks with soapy water.
• Check if gas leaks from joint of the
6
AND
(2) Replace Quick Coupler in case of leakage.
Coupler.
COUPLER
PIPE
• Put all Joint Pipes in a clean box and
7
cover tightly with the lid so that dust or
humidity is not inserted.
-15-
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