Safety Precaution - Mitsubishi Electric PKFY-WL04NLMU-E.TH Technical & Service Manual

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SAFETY PRECAUTION

Read before installation and performing electrical work
Thoroughly read the following safety precautions prior to installation.
Observe these safety precautions for your safety.
This equipment may have adverse effects on the equipment on the same power supply system.
Contact the local power authority before connecting to the system.
Symbol explanations
WARNING
This symbol indicates that failure to follow the instructions exactly as
stated poses the risk of serious injury or death.
CAUTION
This symbol indicates that failure to follow the instructions exactly as
stated poses the risk of serious injury or damage to the unit.
Indicates an action that must be avoided.
Indicates important instructions.
Indicates a parts that requires grounding.
Indicates that caution must be taken with rotating parts. (This
symbol is on the main unit label.) <Color: Yellow>
Indicates that the parts that are marked with this symbol pose
a risk of electric shock. (This symbol is on the main unit label.)
<Color: Yellow>
WARNING
Carefully read the labels affixed to the main unit.
WARNING
  Do not use refrigerant other than the type indicated in the manuals pro-
vided with the unit and on the nameplate.
- Doing so may cause the unit or pipes to burst, or result in explosion or fire
during use, during repair, 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 refrig-
erant.
  Ask your dealer or a qualified technician to install the unit.
- Improper installation by the user may result in water leakage, electric shock,
or fire.
  Properly install the unit on a surface that can withstand its weight.
- Unit installed on an unstable surface may fall and cause injury.
  Only use specified cables. Securely connect each cable so that the ter-
minals do not carry the weight of the cable.
- Improperly connected cables may produce heat and start a fire.
  Take appropriate safety measures against wind gusts and earthquakes
to prevent the unit from toppling over.
- Improper installation may cause the unit to topple over and cause injury or
damage to the unit.
  Only use accessories (i.e., air cleaners, humidifiers, electric heaters)
recommended by Mitsubishi Electric.
  Do not make any modifications or alterations to the unit.
Consult your dealer for repair.
- Improper repair may result in water leakage, electric shock, or fire.
  Do not touch the heat exchanger fins with bare hands.
- The fins are sharp and pose a risk of cuts.
  Properly install the unit according to the instructions in the Installation
Manual.
- Improper installation may result in water leakage, electric shock, or fire.
  Have all electrical work performed by an authorized electrician
accord-ing to the local regulations and the instructions in this manual.
Use a dedicated circuit.
- Insufficient power supply capacity or improper installation of the unit may
re-sult in malfunctions of the unit, electric shock, or fire.
TCH122
  Keep electrical parts away from water.
- Wet electrical parts pose a risk of electric shock, smoke, or fire.
  Securely attach the control box cover.
- If the cover is not installed properly, dust or water may infiltrate and pose a
risk of electric shock, smoke, or fire.
  Only use the type of refrigerant that is indicated on the unit when install-
ing or relocating the unit.
- Infiltration of any other types of refrigerant or air into the unit may adversely
affect the refrigerant cycle and may cause the pipes to burst or explode.
  Consult your dealer or a qualified technician when moving or reinstall-
ing the unit.
- Improper installation may result in water leakage, electric shock, or fire.
  After completing the service work, check for a refrigerant leak.
- If leaked refrigerant is exposed to a heat source, such as a fan heater, stove,
or electric grill, toxic gases will be generated.
  Do not try to defeat the safety features of the unit.
- Forced operation of the pressure switch or the temperature switch by defeat-
ing the safety features for these devices, or the use of accessories other than
the ones that are recommended by Mitsubishi Electric may result in smoke,
fire, or explosion.
  Consult your dealer for proper disposal method.
  Do not use a leak detection additive.
Precautions for handling units for use with water
CAUTION
  Do not use the existing water piping.
- Store the piping materials indoors, and keep both ends of the pipes sealed
until immediately before installation. Keep the joints wrapped in plastic bags.
If dust or dirt enters the water circuit, it may damage the heat exchanger and
cause water leakage.
  Only use water.
- Only use clean water as a refrigerant. The use of water outside the specifi-
cation may damage the refrigerant circuit.
  Install the unit so that external force is not applied to the water pipes.
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