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5.
RELOCATION
AND
MAINTENANCE
5-1.
REMOVING
AND
INSTALLING
THE
PANEL
ASSEMBLY
Removal
procedure
1)
Remove
the
three
screws
that
attach
the
panel
assembly.
2)
Remove
the
panel
assembly.
Be
sure
to
remove
its
bottom
end
first.
Installation
procedure
1)
Install
the
panel
assembly
following
the
removal
procedure
in
reverse.
2)
Be
sure
to
press
the
positions
as
indicated
by
the
arrows
in
order
to
attach
the
assem-
a = =
bly
completely
to
the
unit.
fw
x
*
——_
5-2.
REMOVING
THE
INDOOR
UNIT
Remove
the
bottom
of
the
indoor
unit
from
the
installation
plate.
When
releasing
the
corner
part,
release
both
left
and
right
bottom
corner
part
of
indoor
unit
and
pull
it
downward
and
forward
as
shown
in
the
figure
on
the
right.
if
the
above
method
cannot
be
used
Remove
the
panel.
Then,
insert
hexagonal
wrenches
into
the
square
holes
on
the
left
and
right
sides
of
the
unit
and
push
them
up
as
shown
in
the
following
figure.
The
bottom
of
the
indoor
unit
lowers
and
releases
the
hooks.
Square
hole
5-3.
PUMPING
DOWN
When
relocating
or
disposing
of
the
air
conditioner,
pump
down
the
system
following
the
procedure
below
so
that
refrigerant
is
not
released
into
the
atmosphere.
1)
Connect
the
gauge
manifold
valve
to
the
service
port
of
the
stop
valve
on
the
gas
pipe
side
of
the
outdoor
unit.
2)
Fully
close
the
stop
valve
on
the
liquid
pipe
side
of
the
outdoor
unit.
3)
Close
the
stop
valve
on
the
gas
pipe side
of
the
outdoor
unit
almost
completely
so
that
it
can
be
easily
closed
fully
when
the
pressure
gauge
shows
0
MPa
[Gauge]
(0
Ibffin.”
[0
kgficm’]).
4)
Start
the
emergency
COOL
operation.
To
start
the
emergency
operation
in
COOL
mode,
disconnect
the
power
supply
plug
and/or
turn
off
the
breaker.
After
15
seconds,
connect
the
power
supply
plug
and/or
turn
on
the
breaker,
and
then
press
the
E.O.
SW
once.
(The
emergency
COOL
operation
can
be
performed
continuously
for
up
to
30
minutes.)
5)
Fully
close
the
stop
valve
on
the
gas
pipe side
of
the
outdoor
unit
when
the
pressure
gauge
shows
0.05
to
0
MPa
[Gauge]
(approx.
7.25
to
0
Ibffin’
[0.5
to
0
kgf/cm’).
6)
Stop
the
emergency
COOL
operation.
To
stop
operation,
press
the
E.O.
SW
several
times
until
all
LED
lamps
turn
off.
Refer
to
operating
instructions
for
details.
A
WARNING
When
pumping
down
the
refrigerant,
stop
the
compressor
before
disconnecting
the
refrigerant
pipes.
The
compressor
may
burst
if
air
etc.
get
into
it.
aa
MITSUBISHI
ELECTRIC
CORPORATION
HEAD
OFFICE:
TOKYO
BLDG.,,
2-7-3,
MARUNOUCHI,
CHIYODA-KU,
TOKYO
100-8310,
JAPAN