Safety Precautions - Mitsubishi Electric LOSSNAY VL-220CZGV-EF Handbook

1. Safety precautions

Read the following precautions thoroughly before the maintenance, and then inspect and repair the product in a
safe manner.
The types and levels of danger that may arise if the product is handled incorrectly are described with the warning
symbols shown below.
Electric shock
If you must inspect the circuitry while the power is
on, do not touch the live parts.
(Failure to observe this warning may
result in electric shock.)
Modification is prohibited
Do not modify the unit.
(Failure to observe this warning may
result in electric shock, fire and/or
injury.)
Proper electric work
Use the electric wires designated for electric work,
and conduct electric work in accordance with your
local "Electric Installation Engineering Standard",
the "Indoor Wiring Regulations" and the installation
instructions.
(Improper connection or wiring installation
may result in electric shock and/or fire.)
Caution for injury
Do not work at a location where you do not have a
sure footing.
(Failure to observe this caution may
result in a fall.)
Notes for servicing
● Inspect the earth condition, and repair it if it is incomplete. Make sure that a power supply isolator and an over-
load protection device are installed, if they are not installed, recommend the customer to install them.
Make sure that the product operates properly upon completion of repair. Clean the product and the surrounding
area, and then notify the customer of the completion of repair.
Warning
Improper handling of the product may result in injury or
Caution
damage to properties including buildings and equipment.
Improper handling of the product may
result in serious injury or death.
Turn off the power supply
Be sure to shut off the power supply isolator before
disassembling the unit for repair.
(Failure to observe this warning may
result in electric shock.)
Caution against
electric shock
Use proper parts and tools
For repair, be sure to use the parts listed in the
service parts catalog of the applicable model and
use the proper tools.
(Failure to observe this warning may result
in electric shock, fire and/or injury.)
Prohibited
Replace damaged and/or degraded parts
Be sure to replace the power cord and lead wires if
they are damaged and/or degraded.
(Failure to observe this warning may
result in electric shock and/or fire.)
Check insulation
Be sure to follow
this instruction.
Upon completing repair work, always measure the
insulation resistance. Verify that it is at least 10 MΩ
(with a 500-V DC insulation resistance tester), and
then turn on the power.
(Inadequate insulation may result in
electric shock.)
Wear gloves
Wear gloves when servicing.
(Failure to observe this caution may result
in injury to your hands from sharp metal or
other edges.)
Prohibited
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Be sure to follow
this instruction.
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this instruction.
Be sure to follow
this instruction.