LG HMC036KDT1 Service Manual - Page 32

Valve, Procedure, Multi, Conditioner

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2-way, 3-way Valve (2) Evacuation (All amount of refrigerant leaked) Indoor unit Liquid side Open 2-Way valve Outdoor unit Gas side Open 3-Way valve Indoor unit Liquid side Open 2-Way valve 00 Gas side Open • 3-Way valve manifold gauge Vacuum pump Low- cs,JIW\ .ft• (hOanPdEleN) a/ ^. ... k Hi- handle (OPEN) • Procedure 1. Confirm that both the liguid side valve and gas side valve are set to the opened position. 2. Connect the vaccum pump to the center hose of the manifold gauge. 3. Connect the service port of the gas side valve to the low side of the gauge. 4. Connect power supply to outdoor unit. 5. Evacuation for approximately one hour. - Confirm that the gauge needle has moved toward-76 cmHg (vacuum of 4 mmHg or less). 6. Close the Low handle of the gauge turn off the vacuum pump, and confirm that the gauge needle does not move(approximately 5 minutes after turning off the vacuum pump). 7. Disconnect the charge hose from the vacuum pump. - Vacuum pump oil. If the vacuum pump oil becomes dirty or depleted,replenish as needed. 8. Mount the valve caps and the service port caps. 32 MPS Multi Air Conditioner

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2
-way,
3
-way
Valve
(2)
Evacuation
(All
amount
of
refrigerant
leaked)
Indoor
unit
Liquid
side
Indoor
unit
O
pen
2
-Way
valve
Gas
side
Liquid
side
3-W
Open
ay
valve
Open
2
-Way
valve
Gas
side
•
Vacuum
pump
JIW\
Low-
cs
,
.ft•
(OPEN)
handle
a/
Hi-
handle
^.
...
k
(OPEN)
manifold
gauge
Open
3
-Way
valve
Outdoor
unit
00
•
Procedure
1.
Confirm
that
both
the
liguid
side
valve
and
gas
side
valve
are
set
to
the
opened
position.
2.
Connect
the
vaccum
pump
to
the
center
hose
of
the
manifold
gauge.
3.
Connect
the
service
port
of
the
gas
side
valve
to
the
low
side
of
the
gauge.
4.
Connect
power
supply
to
outdoor
unit.
5.
Evacuation
for
approximately
one
hour.
-
Confirm
that
the
gauge
needle
has
moved
toward
-76
cmHg
(vacuum
of
4
mmHg
or
less).
6.
Close
the
Low
handle
of
the
gauge
turn
off
the
vacuum
pump,
and
confirm
that
the
gauge
nee-
dle
does
not
move(approximately
5
minutes
after
turning
off
the
vacuum
pump).
7.
Disconnect
the
charge
hose
from
the
vacuum
pump.
-
Vacuum
pump
oil.
If
the
vacuum
pump
oil
becomes
dirty
or
deplet-
ed,replenish
as
needed.
8.
Mount
the
valve
caps
and
the
service
port
caps.
32
MPS
Multi
Air
Conditioner