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Safety Precautions; General Precautions - Mitsubishi Electric City Multi R2 Series Installation Manual

Air-conditioners for building application
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1. Safety precautions

Read and observe the safety precautions below and the instructions provided on the
labels affixed to the unit.
Retain this manual for future reference. Make sure that this manual is passed on to the
end users.
All refrigerant piping work, electrical work, air-tightness test, and brazing work must be
performed by qualified personnel.
Incorrect use may result in serious injury.

1-1. General precautions

Do not use any refrigerant other than the type indicated in the manuals for the unit and on
the nameplate.
- Doing so will cause the unit or pipes to burst, or result in an explosion or fire during use, during
repairs, or at the time of disposal of the unit.
- It may also be in violation of applicable laws.
- MITSUBISHI ELECTRIC CORPORATION cannot be held responsible for malfunctions or
accidents resulting from the use of the wrong type of refrigerant.
Do not use the unit in an unusual environment.
- If the unit is used in areas exposed to large amounts of oil, steam, organic solvents, or corrosive
gases (such as ammonia, sulfuric compounds, or acids), or areas where acidic/alkaline solutions
or special chemical sprays are used frequently, it may significantly reduce the performance and
corrode the internal parts, resulting in refrigerant leakage, water leakage, injury, electric shock,
malfunction, smoke, or fire.
Do not change the settings of the safety or protection devices.
- Forcing the unit to operate by disabling the safety devices, such as the pressure switch or the
thermal switch, may result in bursting, fire, or explosion.
- Operating the unit with a safety device whose settings have been changed may result in
bursting, fire, or explosion.
- Using safety devices other than those specified by Mitsubishi Electric may result in bursting, fire,
or explosion.
Do not alter or modify the unit.
- Doing so will result in refrigerant leakage, water leakage, serious injury, electric shock, or fire.
Do not wet the electrical parts.
- Doing so may result in current leakage, electric shock, malfunction, or fire.
Do not touch the electrical parts, switches, or buttons with wet fingers.
- Doing so may result in electric shock, malfunction, or fire.
WT08432X01
: indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
: indicates a hazardous situation which, if not avoided, could result in
minor or moderate injury.
: addresses practices not related to personal injury, such as product
and/or property damage.
GB-2

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