27
Installation and Maintenance
Service Manual
●When installing or relocating the unit, be sure to keep the
refrigerant circuit free from air or substances other than the specified
refrigerant.
Any presence of air or other foreign substance in the refrigerant
circuit will cause system pressure rise or compressor rupture,
resulting in injury.
●When installing or moving this unit, do not charge the refrigerant
which is not comply with that on the nameplate or unqualified
refrigerant.Otherwise, it may cause abnormal operation, wrong
action, mechanical malfunction or even series safety accident.
●When refrigerant needs to be recovered during relocating or
repairing the unit, be sure that the unit is running in cooling mode.
Then, fully close the valve at high pressure side (liquid valve).About
30-40 seconds later, fully close the valve at low pressure side (gas
valve), immediately stop the unit and disconnect power. Please note
that the time for refrigerant recovery should not exceed 1 minute.
If refrigerant recovery takes too much time, air may be sucked in and
cause pressure rise or compressor rupture, resulting in injury.
●During refrigerant recovery, make sure that liquid valve and gas
valve are fully closed and power is disconnected before detaching
the connection pipe.
If compressor starts running when stop valve is open and connection
pipe is not yet connected, air will be sucked in and cause pressure
rise or compressor rupture, resulting in injury.
●When installing the unit, make sure that connection pipe is securely
connected before the compressor starts running.
If compressor starts running when stop valve is open and connection
pipe is not yet connected, air will be sucked in and cause pressure
rise or compressor rupture, resulting in injury.
●Prohibit installing the unit at the place where there may be leaked
corrosive gas or flammable gas.
If there leaked gas around the unit, it may cause explosion and other
accidents.
●Do not use extension cords for electrical connections. If the electric
wire is not long enough, please contact a local service center
authorized and ask for a proper electric wire.
Poor connections may lead to electric shock or fire.
●Use the specified types of wires for electrical connections between
the indoor and outdoor units. Firmly clamp the wires so that their
terminals receive no external stresses.
Electric wires with insufficient capacity, wrong wire connections and
insecure wire terminals may cause electric shock or fire.
To ensure safety, please be mindful of the following
precautions.
