Removal And Inspection; Safety Precautions For Installation - Mitsubishi Electric R410A Operating And Installation Instructions

Removal and inspection

Check and repair
The performance of the air conditioner
■
decreases due to long-term service and
internal dirt.
Odor may result from using condition, or poor
■
drainage of condensed water may result from
dust deposit.
The check and repair are different from com-
■
mon ones. You'd better ask for special tech-
nical service. Please contact the specialty
shop or technical service center for help.

Safety precautions for Installation

1. For the sake of safety, please pay attention to the
following safety precautions
Warning
Users are not allowed to install the machine by
themselves.
Improper installation may cause fire, electric shock, water leakage or
·
injury from machine falling.
Please contact the specialty shop or technical service center for help.
The machine should be installed in a place which can
support its weight.
If the machine is installed in a place which is not solid enough, there
·
will be a risk of injury from machine falling.
Cables between indoor and outdoor unit shall be connected
properly as specified, and connecting terminals for the
cables be fixed firmly without being affected by external
force.
Poor connection or fixture may cause fire.
·
Installation shall be implemented properly based on
installation instructions
Improper installation may cause fire, electric shock, water leakage or
·
injury from machine falling.
Please ventilate room in the event of refrigerant leakage
during installation.
Exposure of refrigerant to open flame can produce toxic gas.
·
Operation noise should be also
considered.
Don't place articles at the outlets of outdoor
■
unit. For the placement will reduce the ef-
ficiency and increase noise in operation.
If there is abnormity in operation, please con-
■
tact the specialty shop or technical service
center for help.
In the event of installation or removing, any substance
other than refrigerant shouldn't be mixed into the
refrigerant circuit.
If air is mixed in the circuit, system pressure will increase to cause
·
breakage.
When pumping down the refrigerant, stop the compres-
sor before disconnecting the refrigerant pipes.
If the refrigerant pipes are disconnected while the compressor
·
is running and the stop valve is open, air could be drawn in and
the pressure in the refrigeration cycle could become abnormally
high. This could cause the pipes to burst or injury.
When installing the unit, securely connect the refrigerant
pipes before starting the compressor.
If the compressor is started before the refrigerant pipes are
·
connected and when the stop valve is open, air could be drawn
in and the pressure in the refrigeration cycle could become
abnormally high. This could cause the pipes to burst or injury.
Electrical work should be performed according to
installation instructions. Be sure to use special power
supply of circuit.
Fire or electric shock may result from insufficient capacity or
·
incomplete construction for the power supply circuit.
The electrical cover of indoor unit or the service board
should be installed correctly.
If the cover and the service board are not installed well, fire or electric
·
shock may result due to entrance of water and dust.
43
When you want to remove the
machine
When removing and reinstalling the air
■
conditioner due to room enlargement or
relocation, please ask for special technical
service.
Warining
Don't reapair or remove the air conditioner
by yourself.
Maloperation may cause fire, electric
shock, injury by unit drop and water
leakage. If the air is mixed in the
refrigerant, pressure may increase to
lead to breakage. Thus, please contact
the specialty shop or technical service
center for help.
Warning