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Extra Procedures
Pumping down refrigerant
Pump down will be carried out when an evaporator is
replaced or when the unit is relocated in another area.
1 Remove the cap from the low pressure side.
2 Turn the low pressure side valve clockwise to close
and connect a pressure gauge (low pressure side) to
the service valve, and open the valve again.
3 Set the unit to the cooling Test mode by pushing K2
button. (Check if the compressor is operating.)
4 Turn the high pressure side valve clockwise to close.
5 When the pressure gauge indicates "0" turn the low
pressure side valve clockwise to close.
6 Stop operation of the air conditioner by pushing K3
button.
7 Close the each cap of valve.
B(liquid)
Relocating the indoor and outdoor
units
1 Pump down refrigerant. See Pumping down
refrigerant on page 27.
2 Remove the power cord.
3 Disconnect the assembly cable from the indoor and
outdoor units.
4 Remove the flare nuts connecting the indoor units
and the pipes. At this time, cover the pipes of the
indoor unit and the other pipes using a cap or vinyl
plug to avoid foreign material entering.
5 Disconnect the pipes connected to the outdoor units.
At this time, cover the valve of the outdoor units and
the other pipes using a cap or vinyl plug to avoid
foreign material entering.
Note: Make sure you do not bend the connection
pipes in the middle and store together with the
cables.
6 Move the indoor and outdoor units to a new location.
7 Remove the mounting plate for the indoor unit and
move it to a new location.
Using the stop valve
Opening the stop valve
1 Open the cap and turn the stop valve anticlockwise
by using a hexagonal wrench.
2 Turn it until the axis is stopped.
Tightening torque for
body cap (Refer to
A(Gas)
the table)
Spindle
Charging core
Tightening torque for
charging port cap
(Refer to the table)
R-22: Thread of the
screw - 7/16-20UNF
R-410A: Thread of
the screw - 1/2-20UNF
3 Tighten the cap securely.
Outer Diameter
(mm)
Ø6.35
Ø9.52
Ø12.70
Ø15.88
Over Ø19.05
(1 N•m=10 kgf•cm)
Tightening torque
Charging port cap
Body cap (N•m)
(N•m)
20 to 25
20 to 25
25 to 30
10 to 12
30 to 35
35 to 40
27
English
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