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Safety Precautions
mrcool.com
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DO NOT install the unit within 3 feet (1 meter) of combustible materials if the unit is equipped with
an auxiliary electric heater.
DO NOT install the unit in a location that may be exposed to combustible gases. If combustible gas
accumulates around the unit, it may cause fire.
DO NOT operate your air conditioner in a wet room such as a bathroom or laundry room. Too
much exposure to water may cause electrical components to short circuit.
DO NOT put appendages or other objects into the air inlet or return grills.
DO NOT stop the appliance by directly cutting off the power. Turn off the unit first.
DO NOT install the appliance in areas with either of the following:
oil smoke or volatile liquid, as plastic parts may deteriorate, adversely affecting the integrity and
functionality of the appliance.
corrosive gas; as this may corrode copper piping and welds, adversely affecting the integrity and
functionality of the appliance.
DO NOT force-dry the filter using open flame or blowers, as this could damage it.
DO NOT operate the air conditioner with wet hands.
DO NOT wash or sprinkle water on the air conditioner, otherwise malfunction or electric shock will
occur.
This appliance must be properly grounded during installation, or electrical shock may occur.
Install drainage piping according to the instructions in this manual. Improper drainage may cause
water damage to your home and property.
This appliance must be stored in a well ventilated area equal in size to the area specified for
operation. It must also be without a continously operating open flame (ex. an operating gas
appliance) and ignition sources (ex. operating electric heater).
Use proper measures to protect the outdoor unit from rodents and other small animals that may
damage electrical components, causing the unit to malfunction.
If wired control (ex: a wall-mount thermostat) is to be used, it should be connected first before
powering up the unit, otherwise it may not function properly.
Only use a soft dry cloth or, as necessary, a slightly wet cloth with neutral detergent to clean the
casing of this appliance.
Before operating the unit under low temperature, connect it to power for 8 hours. If it is
deactivated for a short time (ex: for one night), do not cut off the power. This is done in order to
protect the compressor.
If the unit is to be installed in a small space, please adopt protective measures to prevent the
concentration of refrigerant from exceeding the allowable safety limit; excessive refrigerant leakage
may lead to an explosion.
When installing or re-installing the air conditioner, please keep the refrigerant circuit away from
substances other than the specified refrigerant, such as air. Any presence of foreign substances
will cause an abnormal pressure change or even an explosion, resulting in injury.
Please adopt safety protection measures before touching the refrigerant pipe; otherwise injury
may occur.
Please select the proper copper pipe according to the requirement for pipe thickness.
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