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Precautions For Electrical Wiring; Precautions For Relocating Or Repairing The Unit - Mitsubishi Electric City Multi R2 Series Installation Manual

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1-5. Precautions for electrical wiring

Include some slack in the power cables.
- Failure to do so may break or overheat the cables, resulting in smoke or fire.
Connections must be made securely and without tension on the terminals.
- Improperly connected cables may break, overheat, or cause smoke or fire.
Tighten all terminal screws to the specified torque.
- Loose screws and contact failure may result in smoke or fire.
Electrical work must be performed by qualified personnel in accordance with local
regulations and the instructions provided in this manual. Only use the specified cables and
dedicated circuits.
- Inadequate power source capacity or improper electrical work will result in electric shock,
malfunction, or fire.
Install an inverter circuit breaker on the power supply of each unit.
- Failure to do so may result in electric shock or fire.
Only use properly rated breakers (an earth leakage breaker, local switch <a switch + fuse
that meets local electrical codes>, or overcurrent breaker).
- Failure to do so may result in electric shock, malfunction, smoke, or fire.
Only use standard power cables of sufficient capacity.
- Failure to do so may result in current leakage, overheating, smoke, or fire.
Proper grounding must be provided by qualified personnel.
- Improper grounding may result in electric shock, fire, explosion, or malfunction due to electrical
noise. Do not connect the ground wire to gas or water pipes, lightning rods, or telephone ground
wires.
After the wiring work has been completed, measure the insulation resistance, and make
- Failure to do so may result in electric leakage, malfunction, or fire.

1-6. Precautions for relocating or repairing the unit

Only qualified personnel must relocate or repair the unit. Do not attempt to disassemble or
alter the unit.
- Failure to do so will result in refrigerant leakage, water leakage, serious injury, electric shock, or
fire.
Do not service the unit in the rain.
- Doing so may result in electric leakage, electric shock, wire shorting, malfunction, smoke, or fire.
WT08432X01
GB-5

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