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Service Manual
Part Ⅱ : Installation and Maintenance
7. Notes for Installation and Maintenance
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 conditioner should be installed in suitable
location and ensure the power plug is touchable.
3. Make sure each wiring terminal is connected firmly
during installation and maintenance.
4. Have the unit adequately grounded. The grounding
wire can't be used for other purposes.
5. Must apply protective accessories such as protective
boards, cable-cross loop and wire clip.
6. 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.
7. The power cord and power connection wires can't be
pressed by hard objects.
8. If power cord or connection wire is broken, it must be
replaced by a qualified person.
9. 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 3mm.
Maintenance
10. Check if there is electric leakage on the unit body. If yes,
please eliminate the electric leakage.
11. 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.
12. If the unit is to be installed in a humid place, the circuit
breaker must be installed.
Refrigerant Safety Precautions:
1. Avoid contact between refrigerant and fire as it generates
poisonous gas. Recycle the refrigerant inside the unit
completely before welding pipes.
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.If refrigerant is leaking seriously, it may cause suffocation
or explosion. When using the combustible refrigerant,
please put the unit at ventilated place.
4. 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.
37
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