LG LT-D5480HL User manual

Ceiling Cassette
Air Conditioner
SERVICE MANUAL
MODELS: LT-D5480HL
LT-D5480HA
LT-D5480CL
LT-D5480CA

Contents
Functions .................................................................................................................................3
Product Specifications (Cooling & Heating)..........................................................................5
Dimensions ..............................................................................................................................6
Refrigeration Cycle Diagram ..................................................................................................8
Wiring Diagram ......................................................................................................................10
Operation Details ...................................................................................................................11
Installation of Indoor, Outdoor Unit .....................................................................................14
Cycle........................................................................................................................................30
Cycle Troubleshooting Guide ...............................................................................................33
Electronic Parts Troubleshooting Guide .............................................................................34
Electronic Control Device .....................................................................................................37
Schematic Diagram ...............................................................................................................38
Exploded View and Replacement Parts List .......................................................................39
–2–

–3–
Functions
Indoor Unit
Operation ON/OFF by Remote controller
Sensing the Room Temperature
Room temperature control
Starting Current Control
Time Delay Safety Control
Indoor Fan Speed Control
Soft Dry Operation Mode
Airflow Direction Control
Auto Operation(Auto Change Over)
Deice (defrost) control (Heating)
Auto Restart
Hot-start Control (Heating) • The indoor fan stops until the evaporator piping tempera-
ture will be reached at 28°C.
Compact and light design • To install a unit is very convenient because of smaller size
than textile. ( 600 x 600 )
Low noise • The most advanced low-noise design.
• The adoption of turbo fan and round type heat exchanger
give the quietest operation.
Long life filter • Long life wrinkle(type) and washable and anti-bacteria filter
is adopted.
Plasma Air Purifying Filter(2HL Only)
High head Drain pump • Built-in drain pump automatically drains water.
• A standard drain-head height of up to 700mm is possible.
High-Ceiling corresponding Function • According to the height of ceiling, the RPM of indoor fan
motor is selected to increase air reaching distance.
Central Control(Optional) •
It is operating individually or totally by central control function.
Group Control(Optional Wiring) •
Each controller can control 16 units and 8 controllers can be
connected.
• It operates maximum 16 units by only one wired remote con-
troller and each unit starts sequentially to prevent overcurrent.
• Room temperature sensor. (Thermistor)
• Maintains the room temperature in accordance with the Setting Temp.
• Indoor fan is delayed for 5 seconds at the starting.
• Restarting is inhibited for approx. 3 minutes.
• Jet, High, Med, Low
• Intermittent operation of fan at low speed.
• The louver can be set at swing up and down automatically.
• Although the air-conditioner is turned off by a power failure, it is restarted automati-
cally previous operation mode after power supply.
• The setting temperature and desired operation mode are auto-
matically set by fuzzy logic.
• Both the indoor and outdoor fan stops during defrosting.
• Hot start after defrost ends.

–4–
Remote Controller
Operation ON/OFF
Operation Mode Selection
Fan Speed Selection
Room Temperature Display
Temperature Setting
Setting the Timer
Weekly Program
(Cooling
model only) (Heating
model only)
(Low) (Med) (High)
Cooling Operation Mode ( )
Heating Operation Mode ( ) Auto Operation Mode ( )
Soft Dry Operation Mode ( )
Fan Operation Mode
HI JET AUTOMEDLO
Program Holiday
SET/CLR
MinHour
Week
Timer CancelTimer Cancel
: High:39°C ↔LOW:11°C
: Fan Operates without cooling & heating
Cooling Heating
Down to 18°C
Up to 30°CDown to 16°C Up to 30°C

Model
3, 380-415, 50 3, 380-415, 50 3, 380-415, 50 3, 380-415, 50
13,608(15,826) 13,608(15,826) 13,608(15,826) 13,608(15,826)
54,000 54,000 54,000 54,000
13,608(15,826) 13,608(15,826) - -
54,000 54,000 - -
5,600 5,600 5,600 5,600
4,850 4,850 - -
9.5 9.5 9.5 9.5
8.4 8.4 - -
79 79 79 79
79 79 - -
2.43 2.43 2.43 2.43
3.26 3.26 - -
36 36 36 36
58 58 58 58
5.8 5.8 5.8 5.8
OO OO
OO XX
44 44
OO OO
OO OO
OO OO
OO OO
OO OO
44 44
OO OO
OO XX
OO OO
OO OO
OO OO
OO OO
Option Option Option Option
OO OO
OX OX
5,800 5,800 5,700 5,700
840*840*288 840*840*288 840*840*288 840*840*288
950*950*30 950*950*30 950*950*30 950*950*30
900*1,225*370 900*1,225*370 900*1,225*370 900*1,225*370
32 32 32 32
95 95 95 95
12 : 4*3.5 12 : 4*3.5 12 : 4*3.5 12 : 4*3.5
16 : 5*1.25 16 : 5*1.25 16 : 5*1.25 16 : 5*1.25
1/2(12.7) 1/2(12.7) 1/2(12.7) 1/2(12.7)
3/4(19.05) 3/4(19.05) 3/4(19.05) 3/4(19.05)
50 50 50 50
30 30 30 30
FoamPE/5mm FoamPE/5mm FoamPE/5mm FoamPE/5mm
Ø25 / 32 Ø25 / 32 Ø25 / 32 Ø25 / 32
LT-D5480HA LT-D5480HL LT-D5480CA LT-D5480CL
Power Supply ø, V, Hz
Capacity Cooling kcal/h(W)
Btu/h
Heating kcal/h(W)
Btu/h
Input Cooling W
Heating W
Running Current Cooling A
Heating A
Starting Current Cooling A
Heating A
E.E.R kcal/h(W)
C.O.P W/W
Air Circulation Indoor m3/min
Outdoor m3/min
Moisture Removal / h
Air-Flow Direction Control
Heating Operation Mode
Fan Speeds (steps)
Auto Operation (Changeover)
Forced Operation
Jet Cool
Soft Dry Operation
Timer Delay Safety Function
Feature Air Deflection (Way)
Self Diagnosis
Hot start
Auto Restart
Air refresh (Hole)
High Ceiling
Group Control (Optional wiring)
Central Control
Wired remote controller (with weekly Program)
Plasma A/Cleaner
Refrigerant(R-22) Charge g
Dimensions Indoor mm
(W x D x H) Panel mm
Outdoor mm
Net Weight Indoor kg
Outdoor kg
Main Power Cord AWG#:P*mm2
Connection Cable AWG#:P*mm2
Service Valve Liquid Inch (mm)
Gas Inch (mm)
Installation Pipe Length (m)
Elevation (m)
Insulation(material/thickness)
Drain Hose(I.D/O.D) mm
Product Specifications (Cooling & Heating)
–5–

Dimensions
–6–
290
950
950
950
950
290
210.5
180
52
140
40
110
30
90 90
110
55
840
785
840
678
(1) Indoor Unit

–7–
(2) Outdoor Unit(54K)
L6L7 L8 L9
L4
H
L11
L10
L5
W
D
L1
L2
L3
Gas side
3-way valve
Liquid side
3-way valve
MODEL
DIM
W mm 900
H mm 1,225
D mm 370
L1 mm 460
L2 mm 45
L3 mm 410
L4 mm 1,135
L5 mm 90
L6 mm 550
L7 mm 175
L8 mm 175
L9 mm 112
L10 mm 120
L11 mm 83
54K Models

Refrigeration Cycle Diagram
• HEAT PUMP (LT-D5480HL, LT-D5480HA)
•Rated performance for refrigerant line length of: 7.5m
•If 54K Capacity is installed at a distance of 15m, 450g of refrigerant
should be added ....................................................(15-7.5) x 60g
–8–
INDOOR UNIT OUTDOOR UNIT
HEAT
EXCHANGER HEAT
EXCHANGER
COMPRESSOR
GAS SIDE
LIQUID SIDE
COOLING
HEATING
REVERSING
VALVE
CAPILLARY TUBE
Capacity
54K 3/4" 1/2" 7. 550
GAS LIQUID
530 60
Elevation (m)
Length (m) * Additional
refrigerant
(g/m)
Pipe Size
(Diameter:ø)
Rated RatedMax. Max.

–9–
• COOLING ONLY(LT-D5480CL, LT-D5480CA)
•Rated performance for refrigerant line length of: 7.5m
•If 54K Capacity is installed at a distance of 15m, 450g of refrigerant
should be added ....................................................(15-7.5) x 60g
INDOOR UNIT OUTDOOR UNIT
HEAT
EXCHANGER
(CONDENSER)
HEAT
EXCHANGER
(CONDENSER)
COMPRESSOR
GAS SIDE
LIQUID SIDE
CAPILLARY TUBE
Capacity
54K 3/4" 1/2"
7. 550
GAS LIQUID
530 60
Elevation (m)
Length (m) * Additional
refrigerant
(g/m)
Pipe Size
Rated Rated
Max. Max.

–10–
Wiring Diagram
(1) Capacity: 54K(3ø) - LT-D5480HL, LT-D5480HA, LT-D5480CL, LT-D5480CA
<HEAT PUMP>
<COOLING ONLY>
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
INDOOR
MOTOR DRAIN
PUMP STEP MOTOR
TEMP.
THERMISTOR
PIPE
THERMISTOR
REMOTE
CONTROL
FLOAT S/W
CN -DISP
DISPLAY PCB
ONLY LT-D xxx2HL
AIR
CLEANER
H.V. ASSY
DOOR S/W
TERMINAL
BLOCK
TO OUTDOOR UNIT
3854A20072G3854A20072H
BR
YL
BK
OR
BL
BL
BR
GN/YL
RD
BK
BL
GN
/
YL
COMP
RD
BK
WH
RD
BK
1 2 3 4 5
FUSE T3.15A
4 WAY
RTM
POWER SUPPLY
STN
BK
BK BKWH
WH WH
RD
OR
BK
63H2
WH
D.P CTH
TNS NO NC
WH
OR
BK 52F1
52C 1
2
3
4
5
6
31
T/B1
T/B2
32
B
A
FMo
49FMo FMo 49FMo
YL BK
OR
BK
T3 T2 T1
RD
WH
CM
12
34
56
78
YL BK
OR
BK
BK
BL
BL
BK WH
Co Co
20SV
GN/YL TMo
To the indoor unit
1(L)
2(N)
3
4
5
BK
WHWH YL
BK
RD
F1
F1
OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM
INDOOR
MOTOR DRAIN
PUMP STEP MOTOR
TEMP.
THERMISTOR
PIPE
THERMISTOR
REMOTE
CONTROL
FLOAT S/W
CN -DISP
DISPLAY PCB
ONLY LT-D xxx2CL
AIR
CLEANER
H.V. ASSY
DOOR S/W
TERMINAL
BLOCK
TO OUTDOOR UNIT
3854A20072P3854A20072Z
BR
YL
BK
OR
BL
BL
BR
GN/YL
RD
BL
GN
/
YL
COMP
BK
RD
WH
RD
BK
1 2 3 4 5
FUSE T3.15A
GN/YL TMo
To the indoor unit
2(N)
1(L)
3
4
5
F1
F1
RTM
POWER SUPPLY
STN
BK
BK
WH
RD
WH WH
52C 1
2
3
4
5
6
31
32
B
A
FMo
49FMo FMo 49FMo
BK
T3 T2 T1
RD
WH BK
BL
WH
WH
CM
YL BK
OR
Co Co
YL
OR BK
BR
BK
OR
OR
BR

–11–
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)
•5sec Vertical louvers are delayed for 5 secs to be opened to prevent the frictional sound between louver and air flow.
•30sec The 4-way valve is ceased for 30sec. to prevent 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. Auto Swing Control
•This function is to swing the louver up and down automatically.
3. Air-Filter Checking Control
•'Filter' sign will appear on the remote controller display and main body display when an air-filter is polluted. Then
clean the air-filter referring to Owners Manual.
4. Soft-Dry Operation
•The indoor fan speed is automatically set to the low, and fan speed control is not available because of already
being set to the best speed for Dry Operation by Micom Control.
5. 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 follows.
Intake Air temp.
SET TEMP.+0.5°C
(COMP. ON)
SET TEMP
SET TEMP. -0.5°C
(COMP. OFF)
Selected Selected Selected
fan speed fan speed fan speed
COMPRESSOR ON OFF ON OFF ON
INDOOR FAN Low Low
More than
3 minutes
More than
3 minutes

–12–
Intake Air temp.
Setting temp.+3°C
(Compressor OFF)
Setting temp.
(Compressor ON)
INDOOR FAN
COMPRESSOR ON OFF ON OFF
A point; While the indoor Heat-Exchanger temperature is higher than 40°C fan operates at low speed, when
it becomes lower than 40˚C fan stops.
B point; When the indoor Heat-Exchanger temperature is higher than 42°C, fan operates at selected fan
speed, when it becomes lower than 39°C, the fan operates at low speed.
6. Heating Mode Operation
The unit will operate according to the setting by the remote controller and the operation diagram is shown as follows.
(Hot Start)
Low
OFF
Selected
Fan Speed
minimum 3min
Selecting fan
speed
LowLowLow OFF OFF
minimum
10sec.
1min
AA
minimum
1min.
minimum
10sec.
B
7. Hot-Start Control
•The indoor fan stops until the evaporator piping temperature reaches to 25°C.
•If the evaporator piping temperature drops below 22°C, indoor fan stops again.
•The operation diagram is as follows.
PIPING
TEMPERATURE 1min
COMPRESSOR
INDOOR FAN
ON
OFF LOW Selected
fan speed
22°C
25°C

–13–
8. Defrost Control
•Defrost control is available 45 minutes later since heating mode operation started, and it will not prolong over
10 minutes.
•Defrost control is carried out when the outdoor pipe temp. falls below -6°C for more than 3 minutes after 45
minutes passed from starting of heating operation.
•Defrost ends after 10 minutes passed from starting of defrost operation or when the outdoor pipe temp. rises
over 12°C after 5 minutes passed from starting of defrost.
9. Self-Diagnosis Function
•'CHECK' will flash in the remote controller display when a problem occurs.
•Correct the 'FAULT MESSAGES' as shown in the table below before restarting operation.
•During the normal operation 'CHECK' won't be displayed in the remote controller.
Remote controller LCD FAULT MESSAGES
CH 01 Indoor room temperature thermistor error
CH 02 Indoor piping thermistor error
CH 03 Indoor main body / Remote controller unit communication error
CH 04 Water level float switch error
More than 45 minutes
of heating operation Within
9min. 45sec.
ON OFF
ON
ON
ON OFF
COMPRESSOR
4-WAY VALVE
INDOOR FAN
-6°C ON
12°C OFF
The outdoor
piping Temp. More than 10 min.
running of compressor
More than 45 minutes
of heating operation
HOT-
START
ON

–14–
Installation of Indoor, Outdoor Unit
1. Selection of the best location
1) Indoor unit
•There should not be any heat source or steam
near the unit.
•There should not be any obstacles to the air cir-
culation.
•A place where air circulation in the room will be
good.
•A place where drainage can be easily obtained.
•A place where noise prevention is taken into con-
sideration.
•Do not install the unit near the door way.
•Ensure the spaces indicated by arrows from the
wall, ceiling, or other obstacles.
•The indoor unit must have the maintenance
space around.
2) Outdoor unit
•If an awning is built over the unit to prevent direct
sunlight or rain exposure, be careful that heat
radiation from the condenser is not restricted.
•There should not be any animals or plants which
could be affected by hot air discharged.
•Ensure the spaces indicated by arrows from the
wall, ceiling, fence or other obstacles.
3) Piping length and the elevation
Indoor unit
Outdoor unit
B
A
More than
30cm
Fence or
obstacles
More than 70cm
More than 50cm
More than
More than
30cm
More than
30cm
Sunroof
Unit:cm
Ceiling
Ceiling Board Ceiling Board
30 or more
Above 250 400 or less
100 or more
50 or
more
50 or
more
30 or less
Floor
CAPACITY
54
K Btu/h 3/4" 1/2" 7. 550
GAS LIQUID
530 60
Elevation B (m)
Length A (m) * Additional
refrigerant
(g/m)
Pipe Size
Rated Rated
Max. Max.
•Rated performance for refrigerant line length of: 7.5m
•If 54K Model is installed at a distance of 15m, 450g of refrigerant should be added
(15-7.5) x 60g

–15–
NOTE:
•Avoid the following installation location.
1. Such places as restaurants and kitchen where considerable amount of oil steam and flour is generated.
These may cause heat exchange efficiency reduction, or water drops, drain pump mal-function.
In these cases, take the following actions;
•Make sure that ventilation fan is enough to cover all noxious gases from this place.
•Ensure enough distance from the cooking room to install the air conditioner in such a place where it may
not suck oily steam.
2. Avoid installng air conditioner in such places where cooking oil or iron powder is generated.
3. Avoid places where inflammable gas is generated.
4. Avoid place where noxious gas is generated.
5. Avoid places near high frequency generators.
2. Ceiling opening dimensions and hanging bolt location
Ceiling board
Level gauge
Ceiling
Use the ventilation fan
for smoke-collecting
hood with sufficient
capacity.
Cooking table
Air conditioner
Take enough
distance
Unit:mm
840 Unit size
840 Unit size
672 (Hanging bolt)
101.5101.5
875 (Ceiling opening)
875 (Ceiling opening)
785(Hanging bolt) 45
45
•The dimensions of the paper model for installing are
the same as those of the ceiling opening dimen-
sions.
•Select and mark the position for fixing bolts and piping hole.
•Decide the position for fixing bolts slightly tilted to the drain
direction after considering the direction of drain hose.
•Drill the hole for anchor bolt on the wall.
•This air-conditioner uses a drain pump.
•Install the unit horizontally using a level gauge.
•During the installation, care should be taken not to
damage electric wires.
CAUTION

–16–
Wall
5~7mm
Indoor Outdoor
Set screw of
paper model (4 pieces)
Paper model
for installation
Ceiling board
150mm
Adjust the same height
Ceiling board
Ceiling
Flat washer for M10
(accessory)
Keep the length of the bolt
from the bracket to 40mm
Open the ceiling board
along the outer edge of the
paper model
Flat washer for M10
(accessory)
Hanging bolt
(W3/8 or M10)
Nut
(W3/8 or M10)
Nut
(W3/8 or M10)
Spring washer
(M10)
Air Conditioner body
3. The Indoor Unit Installation
•The following parts are local purchasing.
Hanging Bolt - W 3/8 or M10
Nut - W 3/8 or M10
Spring Washer - M10
Plate Washer - M10
•Drill the piping hole on the wall slightly tilted to the
outdoor side using a Ø70 hole-core drill.
•Tighten the nut and bolt to prevent unit from
falling off.
CAUTION
4. Remote Controller Installation
•Although the room temperature sensor is in the indoor unit, the remote controller should be installed
in such places away from direct sunlight and high humidity.
Installation of the remote controller
•Select places that are not splashed with water.
•Select control position after receiving customer approval.
•The room temperature sensor is built in the indoor unit.
•This remote controller equipped with liquid crystal display. If this position is higher or lower, display is difficult
to see.(The standard height is 1.2 ~ 1.5m high)
Routing of the remote controller cord
•Keep the remote controller cord away from the refrigerant piping and the drain piping.
•To protect the remote controller cord from electrical noise, place the cord at least 5cm away from other power
cables (audio equipment, television set, etc.)
•If the remote controller cord is secured to the wall, provide a trap at the top of the cord to prevent water
droplets from running to the controller.

•Fix the under plate on the wall
•Separate the under plate from Remote control box.
•Fix the cord clamps on the wall by ø3 tapping
screws (accessory).
•Fix the remote control cord.
–17–
Remote control
box body
Cord clamp
(accessory)
Lever carefully
the box open
using a screw
driver, etc.
Front case
The lower part
Face of wall
Under plate
Screw (accessory)
Remove the battery cover from the remote con-
troller.
•Slide the cover according to the arrow direction.
Insert the two batteries.
•Be sure that the (+) and (-) directions are correct.
•Be sure that both batteries are new.
Re-attach the cover.
•Slide it back into position.
WIRED REMOTE CONTROL INSTALLATION
REMOTE CONTROL PREPARATION(OPTIONAL)
DISASSEMBLING
ELECTRICAL WIRING
HOW TO MOUNT ON A WALL
HOW TO INSERT BATTERIES
Wire and make sure that teminal
numbers are matched on unit side and
remote controller side.
The maximum length of the cord is 100m.
If the length of the cord exceeds 50m,
use a wire size greater than 0.5mm2.
Remote controller
(Main board)
CN REMO
•Do not use rechargeable batteries,
such batteries differ from standard dry
cells in shape, dimensions, and per-
formance.
•Romove the batteries from the remote
controller if the air conditioner is not
going to be used for some long time.
HOW TO INSERT BATTERIES

–18–
Make sure that the screws of the terminal are free from looseness.
WARNING
The power cord connected to the outdoor unit should be complied
with the following specifications (Rubber insulation, type H05RN-F
approved by HAR or SAA).
The connecting cable connected to the indoor and outdoor unit should
be complied with the following specifications (Rubber insulation,
type H05RN-F approved by HAR or SAA).
CAUTION
8.5mm
20mm
GN/YL
7.5mm
20mm
GN/YL
[Air inlet side view]
If the supply cord is damaged, it must be replaced by a special cord or assembly available from the manufacturer or its service agent.
NORMAL
CROSS-SECTIONAL
AREA 0.75mm2(36K)
1.25mm2(48K, 54K)
NORMAL
CROSS-SECTIONAL
AREA 2.5mm2(36K)
3.5mm2(48K, 54K)
Terminal Block of Outdoor Unit
1(L) 2(N) 3 4 5 1(L) 2(N) 3 4 5
Terminal Block of Outdoor Unit
1(L) 2(N) 3 4 5
Terminal Block of Indoor Unit
Terminal Block of Indoor Unit
Control box cover
Indoor
power cord
Remote
controller
cord
Control box cover
fitting screw(2 units)
POWER INPUT
RSTN
POWER INPUT
RSTN
1(L) 2(N) 3 4 5
•3 Phase
NORMAL
CROSS-SECTIONAL
AREA 4.0mm2(36K)
6.0mm2(48K)
8.0mm2(54K)
•1 Phase
Heat Pump Model
Cooling Model
•3 Phase
5. Wiring Connection
•Open the control box cover and connect the Remote controller cord and Indoor power wires.

–19–
1. All wiring must comply with LOCAL REGULATIONS.
2. Select a power source that is capable of supplying the current required by the air conditioner.
3. Feed the power source to the unit via a distribution switch board designed for this purpose.
4. The terminal screws inside the control box may be loose due to vibration during transport.
Check the screws for loose connection.
(Running the air conditioner with loose connection can overload and damage electrical components.)
5. Always ground the air conditioner with a grounding wire and connector to meet the LOCAL REGULATION.
Main power source
Switch box
Refrigerant pipe
Circuit Breaker
Use circuit breaker or time delay fuse.
ELECTRICAL WIRING
CONNECTING THE CABLE TO OUTDOOR UNIT
1. Remove the Cover control from the unit by loosening a screw.
Connect the wires to the terminals on the control board individually as following.
2. Secure the cable onto the control board with the holder (clamper).
3. Refix the cover control to the original position with the screw.
4. Use a recongnized circuit breaker 20A(54K) between the power source and the unit. A disconnection device
to adequately disconnect all supply lines must be fitted.
Term
Cord
Powe
cord
Outdoor unit (36K)
Terminal block
Cord Clamper
Cover control
Power supply
cord
Outdoor unit (54K)
3øPower 3øPower

–20–
•Preparation of Piping
6. Connecting Pipes to the Indoor Unit
Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure.
1) Cutting the pipes and the cable.
■Use the accessory piping kit or the pipes purchased
locally.
■Measure the distance between the indoor and the out-
door unit.
■Cut the pipes a little longer than measured distance.
■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.
■Put the end of the copper tube/pipe to downward direc-
tion 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 outdoor 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.
Firmly hold copper tube in a bar(or die) as indicated
dimension in the table above.
5) Check
■Compare the flared work with figure below.
■If flare is noted to be defective, cut off the flared section
and do flaring work again.
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 =
Outside diameter A
mm inch mm
Ø9.52 3/8 0.5~0.8
Ø15.88 5/8 0.8~1.0
Ø19.05 3/4 0.8~1.0