45
Technical Information
Service Manual
Safety Precautions: Important!
Please read the safety precautions carefully before
installation and maintenance.
The following contents are very important for installation and
maintenance.
Please follow the instructions below.
●The installation or maintenance must accord with the
instructions.
●Comply with all national electrical codes and local electrical
codes.
●Pay attention to the warnings and cautions in this manual.
●All installation and maintenance shall be performed by
distributor or qualified person.
●All electric work must be performed by a licensed technician
according to local regulations and the instructions given in
this manual.
●Be caution during installation and maintenance. Prohibit
incorrect operation to prevent electric shock, casualty and
other accidents.
Warnings
Electrical Safety Precautions:
1. Cut off the power supply of air conditioner before checking
and maintenance.
2. The air condition must apply specialized circuit and
prohibit share the same circuit with other appliances.
3. The air conditioner should be installed in suitable location
and ensure the power plug is touchable.
4. Make sure each wiring terminal is connected firmly during
installation and maintenance.
5. Have the unit adequately grounded. The grounding wire
can’t be used for other purposes.
6. Must apply protective accessories such as protective
boards, cable-cross loop and wire clip.
7. The live wire, neutral wire and grounding wire of power
supply must be corresponding to the live wire, neutral wire
and grounding wire of the air conditioner.
8. The power cord and power connection wires can’t be
pressed by hard objects.
9. If power cord or connection wire is broken, it must be
replaced by a qualified person.
10. If the power cord or connection wire is not long enough,
please get the specialized power cord or connection wire
from the manufacture or distributor. Prohibit prolong the wire
by yourself.
11. For the air conditioner without plug, an air switch must
be installed in the circuit. The air switch should be all-pole
parting and the contact parting distance should be more than
3m.
12. Make sure all wires and pipes are connected properly and
the valves are opened before energizing.
13. Check if there is electric leakage on the unit body. If yes,
please eliminate the electric leakage.
14. Replace the fuse with a new one of the same specification
if it is burnt down; don’t replace it with a cooper wire or
conducting wire.
15. If the unit is to be installed in a humid place, the circuit
breaker must be installed.
Installation Safety Precautions:
1. Select the installation location according to the require-
ment of this manual.(See the requirements in installation
part)
2. Handle unit transportation with care; the unit should not be
carried by only one person if it is more than 20kg.
3. When installing the indoor unit and outdoor unit, a suffi-
cient fixing bolt must be installed; make sure the installation
support is firm.
4. Ware safety belt if the height of working is above 2m.
5. Use equipped components or appointed components dur-
ing installation.
6. Make sure no foreign objects are left in the unit after finish-
ing installation.
Refrigerant Safety Precautions:
When refrigerant leaks or requires discharge during installa-
tion, maintenance, or disassembly, it should be handled by
certified professionals or otherwise in compliance with local
laws and regulations.
1. Avoid contact between refrigerant and fire as it generates
poisonous gas; Prohibit prolong the connection pipe by
welding.
2. Apply specified refrigerant only. Never have it mixed with
any other refrigerant. Never have air remain in the refrigerant
line as it may lead to rupture or other hazards.
3. Make sure no refrigerant gas is leaking out when installa-
tion is completed.
4. If there is refrigerant leakage, please take sufficient mea-
sure to minimize the density of refrigerant.
5. Never touch the refrigerant piping or compressor without
wearing glove to avoid scald or frostbite.
Improper installation may lead to fire hazard, explosion,
electric shock or injury.
7. Notes for Installation and Maintenance
