Carrier 42XQ_42XQA - Manual (Page 4)

3
PRECAUTIONS
Safety considerations
The installation, servicing and maintenance
of air conditioning equipment may be
hazardous due to the pressure which the
refrigerant gas exerts on the interior, and
its electrical components. Only specialized
and professionally qualified personnel may
install, repair or perform servicing work on
air conditioning equipment. Non-specialized
people may only perform basic
maintenance work such as: cleaning the
coils and cleaning and/or replacing the
filters.
All other types of maintenance work may
only be performed by specialized
personnel. To perform such work, the
installer must follow the safety standards
applicable, and must wear safety goggles,
clothing and gloves suitable for this
purpose. Appropriate protection must be
used during welding work; a fire
extinguisher must always be kept close to
hand.
For your safety, read these instructions
through carefully and respect all of the
labels marked
WARNING below.
WARNING or CAUTION contained in this
manual or attached to the housing of the
unit.
Consult your local regulations applicable
with respect to electrical installations for
special requirements.
Recognize the safety information
The symbol “ ” indicates a safety alert.
When you see this symbol, it is because
there is a potential risk of material damage
or personal injury. Understand the meaning
of the words
DANGER , WARNING AND
CAUTION . These words are used in
conjunction with the alert symbol.
DANGER means situations with a severe
risk to injury to people, including the risk of
death. The word
WARNING means
situations which could result in personal
injury, including death. The word
CAUTION
indicates unsafe practices which could
result in minor personal injury or material
damage.
• Do not attempt to interconnect units
from different manufacturers without
first consulting your Carrier
representative or an engineer
specializing in air conditioning. The
incompatibility between the indoor
and outdoor unit and its control
devices could cause serious problems
for both units and invalidate the
manufacturers’ warranty coverage.
Carrier accepts no liability and will
cancel the product warranty if these
installation instructions are not
followed as indicated, or if the wiring
is changed. Consult your preferred
Carrier representative for further
details.
WARNING
• Before installing, modifying or performing
servicing work on the system, check
that the electrical power supply to the
unit has been switched off. Check that
there is not more than one power
switch. Check and label each switch
present with the appropriate wording.
Electric shocks can cause personal
injury, and even death. If the power
supply cable is damaged, it must be
replaced only with an authorized
Carrier spare part by its network of
authorized dealers.