LG LB-E4880CL / LB-E6080CL Service Manual ▷ View online
–17–
Copper
tube
90
°
Slanted Uneven Rough
Pipe
Reamer
Point down
Flare nut
Copper tube
Bar
Copper pipe
Clamp handle
Red arrow mark
Cone
Yoke
Handle
Bar
"A"
Inclined
Inside is shining without scratches.
Smooth all round
Even length
all round
Surface
damaged
Cracked Uneven
thickness
= Improper flaring =
6. Connecting Pipes to the Indoor Unit
• Preparation of Piping
Main cause of gas leakage is defect in flaring
work. Carry out correct flaring work in the following
procedure.
work. Carry out correct flaring work in the following
procedure.
1) Cut the pipes and the cable.
■
Use the accessory piping kit or the pipes pur-
chased locally.
chased locally.
■
Measure the distance between the indoor and
the outdoor unit.
the outdoor unit.
■
Cut the pipes a little longer than measured dis-
tance.
tance.
■
Cut the cable 1.5m longer than the pipe length.
2) Burrs removal
■
Completely remove all burrs from the cut cross
section of pipe/tube.
section of pipe/tube.
■
Put the end of the copper tube/pipe to downward
direction as you remove burrs in order to avoid to
let burrs drop in the tubing.
direction as you remove burrs in order to avoid to
let burrs drop in the tubing.
3) Putting nut on
■
Remove flare nuts attached to indoor and out-
door units, than put them on pipe/tube having
completed burr removal.
(Not possible to put them on after flaring work)
door units, than put them on pipe/tube having
completed burr removal.
(Not possible to put them on after flaring work)
4) Flaring work
■
Carry out flaring work using flaring tool as shown
below.
below.
Firmly hold copper tube in a bar(or die) as indicat-
ed dimension in the table above.
ed dimension in the table above.
5) Check
■
Compare the flared work with figure.
■
If flare is noted to be defective, cut off the flared
section and do flaring work again.
section and do flaring work again.
Outside Diameter
" A "
Gas
Liquid
Gas
Liquid
48K BTU
3/4"
1/2"
1.0~1.3 0.5~0.8
60K BTU
3/4"
1/2"
1.0~1.3 0.5~0.8
Capacity
1. Form the piping according to its routing. Avoid
bending and bending back the same piping point
more than three times. (This will result in hard-
ening the pipe.)
more than three times. (This will result in hard-
ening the pipe.)
2. After deforming the piping, align centers of the
union fitting of the indoor unit and the piping, and
tighten them firmly with wrenches.
tighten them firmly with wrenches.
3. Connect pipe to the service valve or ball valve
which is located below the outdoor unit.
4. After completing the piping connection, be sure
to check if there is gas leakage in indoor and
outdoor connection.
outdoor connection.
After completing the piping connection, execute
vacuum drying for the connecting piping and the
indoor unit.
The vacuum drying must be carried out using the
service ports of both the liquid and gas side valves.
vacuum drying for the connecting piping and the
indoor unit.
The vacuum drying must be carried out using the
service ports of both the liquid and gas side valves.
Use two wrenches and tighten with regular torque.
–18–
Outdoor
unit
Liquid side
Flare connection
Flare connection
Gas side
Indoor
unit
Union
Piping Connection
Vacuum drying
CAUTION
Model
Liquid side piping
Gas side piping
LB-E4880CL
1/2"
3/4"
LB-E6080CL
1/2"
3/4"
Pipe size
Torque
1/4"
1.8kg.m
3/8"
4.2kg.m
1/2"
5.5kg.m
Gas Side
5/8"
6.6kg.m
3/4"
6.6kg.m
Liquid Side
–9–
Operation Details
(1) The function of main control
1. Time Delay safety Control
• 3min... The compressor is ceased for 3minutes to balance the pressure in the refrigeration cycle.
(Protection of compressor)
• 30sec
...
The 4-way valve is ceased for 30sec. to prevent the refrigerant-gas abnormal noise when the Heating
operation is OFF or switched to the other operation mode while compress is off.
While compressor is running, it takes 3~5 seconds to switch.
2. Soft-Dry Operation
• The indoor fan speed is automatically set to the low, so the shift of the indoor fan speed is impossible because of
already being set to the best speed for Dry Operation by Micom Control.
3. Cooling Mode Operation
• When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote con-
troller and the operation diagram is as following
Intake Air temp.
COMP. ON
(SET TEMP.+0.5°C)
(SET TEMP.+0.5°C)
COMP. OFF
(SET TEMP. -0.5°C)
(SET TEMP. -0.5°C)
More than
More than
3 minutes
3 minutes
Selecting
Selecting
Selecting
fan speed
fan speed
fan speed
COMPRESSOR
ON
OFF
ON
OFF
ON
INDOOR FAN
Low Low
Product Specifications (Cooling)
Model Name
Item
Unit
Cooling Capacity
Btu/h(kcal/h)
Moisture Removal
l
/ h
Power Source
Ø, V, Hz
Indoor
Outdoor
Input
Cooling
Running Current
Cooling
E.E.R.
Btu/h-W
Indoor
Outdoor
Indoor
Outdoor
Refrigerant (R-22)
g
Remocon Type
Liquid
Gas
Drain Hose
Connecting Wire
Main Power Cable
Time Delay Safety Function
Soft Dry
Fan Speed (Indoor)
Timer
Self-Diagnosis
Air Circulation
m
3
/min
Dimensions
(W x H x D)
Net. Weight
mm
kg
W
A
LB-E4880CL
LB-E6080CL
–5–
Service Valve &
Connecting Tube
Connecting Tube
48,000(12,090)
60,000(15,120)
6.0
6.5
3Ø, 380-415V, 50Hz
50
59
105
6,000
10
8.0
10
1,230 x 370 x 680
900 x 1,200 x 370
70
90
4,100
4,200
L.C.D
1/2" (12.7)
3/4" (19.05)
O
1.25mm
2
¤C
3.5mm
2
¤C
O
O
3 (Hi, Med, Low)
24Hrs
O
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