LG HMC036KDT1 Service Manual - Page 53

Purging, Pipings, indoor

Get LG HMC036KDT1 PDF manuals and user guides View all LG HMC036KDT1 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 53 highlights

Installation (6) Air Purging of the Pipings and indoor uni The air which contains moisture remaining in the is refrigeration cycle may cause a malfunction on the compressor. 1. Confirm that both the liquid side valve and the gas side valve are set to the closed position. 2. After connecting the piping, check the joints for gas leakage with gas leak detector. 3. Remove the service port nut, and connect the gauge manifold and the vacuum pump to the service port by the charge hose. 4. Vacuum the indoor unit and the connecting pipes until the pressure in them lowers to below-76cmHg. 5. Disconnect the charge hose and fit the nut to the service port. (Tightening torque: 1.8kg•rn) 6. Remove the valve stem nuts, and fully open the stems of the 2-way and 3-way valves with a hexagon wrench. 7. Tighten the valve stem nuts of the 2-way valve and 3-way valve. Indoor unit Liquid side Closed 2-Way valve Outdoor uncit_D Gas side Closed 3-Way valve Indoor unit Liquid side -`r Closed 2-Way valve Gas, side manifold gauge Closed 3-Way r valve 11 Vacuum pump (3 - Low handle V22 (OPEN) Hi- handle (OPEN) Service Manual 53

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
Installation
(6)
Air
Purging
of
the
Pipings
and
indoor
uni
The
air
which
contains
moisture
remaining
in
the
is
refrigeration
cycle
may
cause
a
malfunction
on
the
compressor.
1.
Confirm
that
both
the
liquid
side
valve
and
the
gas
side
valve
are
set
to
the
closed
position.
2.
After
connecting
the
piping,
check
the
joints
for
gas
leakage
with
gas
leak
detector.
3.
Remove
the
service
port
nut,
and
connect
the
gauge
manifold
and
the
vacuum
pump
to
the
service
port
by
the
charge
hose.
4.
Vacuum
the
indoor
unit
and
the
connecting
pipes
until
the
pressure
in
them
lowers
to
below-76cmHg.
5.
Disconnect
the
charge
hose
and
fit
the
nut
to
the
service
port.
(Tightening
torque:
1.8kg•rn)
6.
Remove
the
valve
stem
nuts,
and
fully
open
the
stems
of
the
2
-way
and
3
-way
valves
with
a
hexagon
wrench.
7.
Tighten
the
valve
stem
nuts
of
the
2
-way
valve
and
3
-way
valve.
Indoor
unit
Liquid
side
Indoor
unit
Closed
2
-Way
valve
Gas
side
Closed
3
-Way
valve
Liquid
side
-
`r
Vacuum
pump
(3
-
Outdoor
unit
c_D
Closed
2
-Way
valve
Gas
,
side
Closed
3
-Way
r
valve
11
manifold
gauge
handle
V22
(OPEN)
Low
Hi-
handle
(OPEN)
Service
Manual
53