Samsung AM27B1C07 Service Manual page 3

1-2 "Pump down" Procedure
1. Confirm that both the 2-way and 3-way valves are set to
the open position.
(1) Remove the valve stem caps.
(2) Be sure to use a hexagonal wrench to operate the
Gas side valve stems.
2. Operate the unit for 10 to 15 minutes.
3. Stop operation and wait for 3 minutes, then connect the
charge set to the service port of the 3-way valve.
(1) Connect the charge hose with the push pin to the
service port.
4. Air purging of the charge hose.
(1) Open the low-pressure valve on the charge set slight-
ly to air purge from the charge hose.
5. Set the liquid side 2-way valve to the closed position.
6. Operate the air conditioner at the cooling cycle and stop
operation immediately after setting the 3-way valve to
the closed position when the gauge indicates 0
kg/cm G.
2
If the unit can not be operated at the Cooling
Mode(weather is rather cool), operate the unit at the
Trubo Mode. So that the unit can be operated.
7. Disconnect the charge set, and mount the both 3-way
valve's stem nuts and the service port cap.
Relocation of the air conditioner
• Refer to this procedure when the unit is relocated.
1. Carry out the pump down procedure
(refer to the details of 'pump down').
2. Remove the power cord.
3. Disconnect the assembly cable from the indoor and
outdoor units.
4. Remove the flare nut connecting the indoor unit and
the pipe.
At this time, cover the pipe of the indoor unit and
the other pipe using a cap or vinyl plug to avoid
foreign material entering.
2
Relocation of the air conditioner
• Refer to this procedure when the unit is relocated.
5. Disconnect the pipe connected to the outdoor unit.
At this time, cover the valve of the outdoor unit and
the other pipe using a cap or vinyl plug to avoid
foreign material entering.
6. Make sure you do not bend the connection pipes in
the middle and store together with the cables.
7. Move the indoor and outdoor units to a new
location.
8. Remove the mounting plate for the indoor unit and
move it to a new location.
2-Way Valve
3-Way Valve