25
Installation and Maintenance
Service Manual
Safety Precautions for Installing and Relocating the Unit:
WARNINGS
To ensure safety, please be mindful of the following precautions.
1. 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.
2.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.
3.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.
4.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.
5.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.
6.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.
7.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.
8.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.
7. Notes for Installation and Maintenance
