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Pump down Procedure
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 counter clockwise to close.
5. When the pressure gauge indicates "0" turn the low pressure side valve counter
clockwise to close.
6. Stop operation of the air conditioner by pushing K3 button.
7. Close the each cap of valve.
Relocation of the air conditioner
• Refer to this procedure when the unit is relocated.
• Carry out the pump down procedure (refer to the details of 'pump down').
• Remove the power cord.
• Disconnect the assembly cable from the indoor and outdoor units.
• 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.
• 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 .
• Make sure you do not bend the connection pipes in the middle and store together with the cables.
• Move the indoor and outdoor units to a new location.
• Remove the mounting plate for the indoor unit and move it to a new location.
Checking correct grounding
If the power distribution circuit does not have a grounding or the grounding does not comply with specifications, an
grounding electrode must be installed. The corresponding accessories are not supplied with the air conditioner.
1. Select an grounding electrode that complies with the specifications given in
the illustration.
2. Connect the flexible hose to the flexible hose port.
In damp hard soil rather than loose sandy or gravel soil that has a higher
grounding resistance .
Away from underground structures or facilities, such as gas pipes, water pipes,
telephone lines and underground cables .
At least two metres away from a lightening conductor grounding electrode and
its cable .
• The grounding wire for the telephone line cannot be used to ground
the air conditioner .
3. Finish wrapping insulating tape around the rest of the pipes leading to the
outdoor unit.
High pressure
(Liquid side)
AC✴✴✴KXAPNH
High pressure
Low pressure
(Liquid side)
(Gas side)
Steel core
Carbon
plastic
Terminal M4
To grounding
PVC-insulated green/
yellow wire
50cm
30cm
Low pressure
(Gas side)
screw
31
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