Samsung AR07TSFABWKN Service Manual page 92

• 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
WARNING
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.
1. Check the piping connections.
gauge to the packed valve having a service port .
• Make the electrical connection and leave the system into "stand
by mode". Do not turn on the system! This is necessary for better
CAUTION
vacuum operation (full OPEN position of Electronic Expansion
Valve - EEV-).
Model Name
AJ020TXJ2CH
AJ024TXJ3CH
AJ020TXS3CH
AJ024TXS4CH
AJ030TXS4CH
AJ036TXS4CH
AJ036TXJ4CH
AJ048TXJ5CH
ter clockwise.
minutes.
clockwise.
about 1 hour. This procedure is very important in order to avoid
gas leak.
open position.
6. Mount the valve stem nuts and the service port cap to the valve,
Outer diameter
(mm)
ø 6.35
ø 9.52
ø 12.70
ø 15.88
Samsung Electronics
Valve
3/8" 1/2"
1
1
3
2
Tightening torque
Body cap Charging port cap
(N · m) (N · m)
20 to 25
20 to 25
10 to 12
25 to 30
30 to 35
Charging
core
1
2
-
Tightening torque for charging port cap (Refer to the table)
2
3
-
Tightening torque for body cap
Tightening torque for charging
port cap (Refer to the table)
R-140A : Diameter of the screw-1/2-20UNF
INDOOR A UNIT
INDOOR B UNIT
Tightening torque for body cap
(Refer to the table)
Spindle
R-410A : Thread of the screw -1/2-2OUNF
Vacuum
Pump
(Refer to the table)
Charging core
Vacuum
Pump
Spindle