Haier AW042MUGHA Installationsanleitung Seite 10

Safety
Do not contact with discharged refrigerant gas during repair as it can cause frostbite.
Must ensure complete evacuation of the refrigerant gas in a well-ventilated place
before disconnecting the suction or discharge pipe of the compressor at the welded
section.
In case of gas remaining inside the compressor, disconnection of the pipe can lead
to discharge of refrigerant gas or refrigerating machine oil, which may cause injury.
Must ensure good ventilation if refrigerant gas leaks during repair as refrigerant gas
may generate toxic gases when it contacts flames.
Must discharge the capacitor completely prior to repair to avoid electrical shocks as
it supplies high-voltage electricity to the outdoor unit's electrical components.
Do not plug in or unplug the power cable to turn the air conditioner on or off as it may
cause an electrical shock or fire.
Must wear a safety helmet, gloves, and a safety belt to prevent falls when working
in high places (more than 2 m or 6.5 ft).
Must use exclusively designed pipes, flare nuts, and tools for R32, R410A and R290
refrigerant models to avoid serious accidents like damage to the refrigerant cycle or
equipment failure.
Do not mix air or any gas other than the specified refrigerant (R32, R410A, R290) in
the refrigerant system to avoid excessively high pressure that could result in
equipment damage and injury.
CAUTION
Do not repair electrical components with wet hands to avoid electrical shocks.
Do not clean the units with water; it can cause electrical shocks.
Must ensure proper grounding when working in a humid or wet place to avoid
electrical shocks.
Must switch off the power and unplug the cable when cleaning the equipment. The
internal fan rotates at a high speed, and may cause injury.
Must use appropriate tools for repairs to avoid injury.
Must ensure the refrigerating cycle section has cooled down enough before
conducting repair work to avoid burns.
Must conduct welding work in a well-ventilated place to avoid oxygen deficiency.
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