Mitsubishi Electric PUHY-P168, Service Handbook

Page: 6 / 404

Before installing the unit (moving and reinstalling the unit) and performing electrical
work
WARNING
When installing or relocating the unit, make sure that
no substance other than the specified refrigerant
(R410A) enters the refrigerant circuit.
Any presence of foreign substance such as air can cause
abnormal pressure rise or explosion.
CAUTION
Properly ground the unit.
Do not connect the grounding wire to a gas pipe, water pipe,
lightning rod, or grounding wire from a telephone pole. Im-
proper grounding may result in electric shock, smoke, fire,
and/or malfunction due to noise interference.
Do not put tension on the power supply wires.
If tension is put on the wires, they may break and result in
excessive heat, smoke, and/or fire.
Install an earth leakage breaker to avoid the risk of elec-
tric shock.
Failure to install an earth leakage breaker may result in
electric shock, smoke, and/or fire.
Use the kind of power supply wires that are specified in
the installation manual.
The use of wrong kind of power supply wires may result in
current leak, electric shock, and/or fire.
Use breakers and fuses (current breaker, remote switch
< Type-B fuse>, moulded case circuit breaker)
with the proper current capacity.
The use of wrong capacity fuses, steel wires, or copper
wires may result in malfunctions, smoke, and/or fire.
Do not spray water on the air conditioner or immerse
the air conditioner in water.
Otherwise, electric shock and/or fire may result.
Periodically check the installation base for damage.
If the unit is left on a damaged platform, it may fall and
cause injury.
Properly install the drain pipes according to the in-
structions in the installation manual. Keep them insu-
lated to avoid dew condensation.
Improper plumbing work may result in water leakage and
damage to the furnishings.
Exercise caution when transporting products.
ΠProducts weighing more than 20 kg should not be carried
alone.
ΠDo not carry the product by the PP bands that are used on
some products.
ΠDo not touch the heat exchanger fins. They are sharp and
dangerous.
ΠWhen lifting the unit with a crane, secure all four corners to
prevent the unit from falling.
Properly dispose of the packing materials.
Œ
Nails and wood pieces in the package may pose a risk of
injury.
ΠPlastic bags may pose a risk of choking hazard to children.
Tear plastic bags into pieces before disposing of them.