Samsung Electronics 7-3
SAMSUNG PROPRIETARY. DO NOT COPY OR DISTRIBUTE WITHOUT PERMISSION
SAMSUNG PROPRIETARY. DO NOT COPY OR DISTRIBUTE WITHOUT PERMISSION
• Make the electrical connection and leave the system into “stand
by mode”. Do not turn on the system! This is necessary for better
vacuum operation (full OPEN position of Electronic Expansion
Valve - EEV-).
CAUTION
Model Name
Valve
3/8” 1/2”
AJ020BXJ2CH 1 1
AJ024BXJ3CH 1 2
AJ020CXS3CH 3 -
AJ024CXS4CH
2
2
AJ030CXS4CH
AJ036CXS4CH
AJ036BXJ4CH
AJ048BXJ5CH 3
-
Outer diameter
(mm)
Tightening torque
Body cap
(N · m)
Charging port cap
(N · m)
ø 6.35 20 to 25
10 to 12
ø 9.52 20 to 25
ø 12.70 25 to 30
ø 15.88 30 to 35
7-2 Connecting Up and Purging the Circuit
• When installing, make sure there is no leakage. When recovering the refrigerant, ground the compressor first
before removing the connection pipe. If the refrigerant pipe is not properly connected and the compressor works
with the service valve open, the pipe inhales the air and it makes the pressure inside of the refrigerant cycle
abnormally high. It may cause explosion and injury.
WARNING
Vacuum
Pump
Tightening torque for body cap
(Refer to the table)
Charging core
Tightening torque for charging
port cap (Refer to the table)
R-140A : Diameter of the screw-1/2-20UNF
Spindle
Vacuum
Pump
INDOOR A UNIT
INDOOR B UNIT
Tightening torque for body cap
(Refer to the table)
Spindle
Charging
core
R-410A : Thread of the screw -1/2-2OUNF
Tightening torque for charging port cap (Refer to the table)
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