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Mitsubishi Electric PURY-HP72 Service Handbook page 6

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To reduce the risk of injury or electric
shock, switch off the main power before
performing electrical work.
All electric work must be performed by a
qualified electrician according to the local
regulations, standards, and the instructions
detailed in the Installation Manual. Capacity
shortage to the power supply circuit or im-
proper installation may result in malfunc-
tion, electric shock, smoke, or fire.
To reduce the risk of electric shock, smoke,
or fire, install an earth leakage breaker on
the power supply to each unit.
To reduce the risk of electric shock, smoke,
or fire, install an inverter circuit breaker on
the power supply to each unit. (Applicable
to inverter units only)
Use properly rated breakers and fuses
(earth leakage breaker, local switch <switch
+ fuse>, no-fuse breaker). The use of a
breaker with a breaking capacity greater
than the specified capacity may cause elec-
tric shock, malfunctions, smoke, or fire.
To reduce the risk of current leakage, wire
breakage, smoke, or fire, keep the wiring
out of contact with the refrigerant pipes and
other parts, especially sharp edges.
Relocation and Repairs
[6]
Relocation and Repairs
To reduce the risk of refrigerant leakage,
water leakage, injury, electric shock, and
fire, units should only be moved or repaired
by your dealer or qualified personnel.
To reduce the risk of wire shorting, electric
shock, malfunctions, or fire, keep circuit
boards dust free, and do not touch them
with your hands or tools.
[7] Additional Precautions
Additional Precautions
To avoid damage to the unit, use appropri-
ate tools to install, inspect, or repair the
unit.
Use properly rated breakers and fuses (in-
verter circuit breaker, local switch <switch +
fuse>, no-fuse breaker). The use of a break-
er with a breaking capacity greater than the
specified capacity may cause electric
shock, malfunctions, smoke, or fire. (Appli-
cable to inverter units only)
To reduce the risk of current leakage, over-
heating, smoke, or fire, use properly rated
cables with adequate current carrying ca-
pacity.
Proper grounding must be provided by a li-
censed electrician.
Do not connect the grounding wire to a gas
pipe, water pipe, lightning rod, or telephone
wire. Improper grounding may result in
electric shock, smoke, fire, or malfunction
due to electrical noise interference.
To reduce the risk of wire shorting, electric
leak, electric shock, smoke, or fire, do not
perform maintenance work in the rain.
To reduce the risk of injury, electric shock,
and fire, properly reinstall all removed com-
ponents after completing repair work.
To reduce the risk of refrigerant and water
leakage, check the pipe supports and insu-
lation for damage during inspection or re-
pair, and replace or repair the ones that are
found to be deteriorated.
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