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Model
LW-E1860HL LW-D1831CN LW-D1834CN
Pages
20
Size
340.09 KB
Type
PDF
Document
Service Manual
Brand
Device
Air Conditioner
File
lw-e1860hl-lw-d1831cn-lw-d1834cn.zip
Date

LG LW-E1860HL / LW-D1831CN / LW-D1834CN Service Manual ▷ View online

2.2.3 FAN, SHROUD
1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the 4 screws which fasten the condenser.
3. Move the condenser sideward carefully.
4. Remove the clamp which secures the FAN with a
hand piler.
5. Remove the FAN.
6. Remove the SHROUD.
7. Re-install by referring to the removal procedure.
(See figure 8 and 9)
2.3 ELECTRICAL PARTS
2.3.1 OVERLOAD PROTECTOR
1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the nut which fastens the TERMINAL
COVER.
3. Remove the terminal cover.
4. Remove all the leads from the OVERLOAD
PROTECTOR.
5. Remove the overload protector.
6. Re-install the component by referring to the above
removal procedure. (See figure 10 and 11)
2.3.2 COMPRESSOR
1. Remove the cabinet. (Refer to section 2.1.2)
2. Discharge the regrigerant system using a Freon
TM
Recovery System.
If there is no valvo to attach the recovery system,
install one (such as a WATCO A-1) before venting
the Freon
TM 
. Leave the valve in place after 
servicing the system.
3. Remove the overload protector. (Refer to section
2.3.1)
4. After purging the unit completely, detach the
suction and discharge tube at the compressor
connections.
5. Remove the 3 nuts and the 3 bracket washers
which fasten the compressor.
6. Remove the compressor.
7. Re-install the components by referring to the
removal procedure, above. (See figure 12)
—8—
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
2.3.3 CAPACITOR
1. Remove the control box. (Refer to section 2.1.3)
2. Remove the screw and the clamp which fastens
the CAPACITOR.
3. Disconnect all the leads of capacitor terminals.
4. Re-install the components by referring to the
removal procedure, above. (See figure 13)
2.3.4 POWER CORD
1. Remove the control box. (Refer to section 2.1.3)
2. Disconnect the grounding screw from the control
box.(See figure 14)
3. Disconnect 2 receptacles.
4. Remove a screw which fastens the CLIP CORD.
5. Pull the power cord. (See figure 15)
6. Re-install the component by referring to the above
removed procedure.
(Use only one ground-maked hole      for ground
connection.)
7. If the supply cord of this appliance is damaged, it
must be replaced by the special cord. (The 
special cord means the cord which has the same
specification marked on the supply cord attached
at the unit.)
2.3.5 THERMOSTAT
1. Remove the control box. (Refer to section 2.1.3)
2. Remove the screw which fasten the display panel.
3. Remove the two knobs.
4. Remove the display panel.
5. Remove the 2 screws which fasten the thermostat.
6. Disconnect all the leads of thermostat terminals.
7. Remove the THERMOSTAT.
8. Re-install the components by refereing to the
above removal procedure. (See figure 16)
2.3.6 ROTARY SWITCH
1. Remove the control box. (Refer to section 2.1.3)
2. Remove the screw which fastens the display panel.
3. Remove the two knobs.
4. Remove the display panel.
5. Remove 2 screws which fasten the rotary switch.
6. Disconnect all the leads of the rotary swith 
terminals.
7. Remove the rotary switch.
8. Re-install the components by referring to the
above removal procedure. (See figure 17)
—9—
Figure 14
Figure 15
Figure 13
Figure 16
Figure 17
—10—
2.3.7 MOTOR
1. Remove the cabinet. (Refer to section 2.1.2)
2. Remove the air guide. (Refer to section 2.2.1)
3. Remove the blower. (Refer to section 2.2.2)
4. Remove the fan. (Refer to section 2.2.3)
5. Remove the shroud. (Refer to section 2.2.3)
6. Remove the control box. (Refer to section 2.1.3)
7. Remove the 2 screws which fasten the motor.
8. Remove the motor.
9. Re-install the components by referring to the
removal procedure. (See figure 18)
2.4 REFRIGERATION CYCLE
2.4.1 CONDENSER
1. Remove the cabinet. (Refer to section 2.1.2)
2. Discharge the refrigerant system using a Freon
TM
Recovery System.
If there is no valve to attach the recovery system,
install one (such as a WATCO A-1) before venting
the Freon
TM
. Leave the valve in place after
servicing the system.
3. Remove the 4 screws which fasten the condenser.
4. After discharging the refrigerant completely,
detach the interconnecting tube at the condenser
connections.
5. Remove the condenser.
6. Re-install the component by referring to notes.
(See figure 19)
2.4.2 EVAPORATOR
1. Remove the cabinet. (Refer to section 2.1.2)
2. Discharge the refrigerant system using a Freon
TM
Recovery System.
If there is no vlavle to attach the recovery system,
install one (such as a WATCO A-1) before venting
the Freon
TM
. Leave the vlave in place after
servicing the system.
3. Remove the cover E.P.S and the upper air guide
(Refer to section 2.2.1)
4. After discharging the refrigerant completely,
detach the interconnecting tube at the evaporator
connections.
5. Remove the evaporator.
6. Re-install the component by referring to notes.
(See figure 20)
Figure 19
Figure 20
Figure 21
—11—
— Replacement of the refrigeration cycle.
1. When replacing the refrigeration cycle, be sure to
Discharge the refrigerant system using a Freon
TM
recovery System.
If there is no valve to attach the recovery system,
install one (such as a WATCO A-1) before venting
the Freon
TM
. Leave the valve in place after 
servic-ing the system.
2. After discharging the unit completely, remove the
desired component, and unbraze the pinch-off
tubes.
3. Solder service valves into the pinch-off tube ports,
leaving the valves open.
4. Solder the pinch-off tubes with Service valves.
5. Evacuate as follows.
1) Connect the vacuum pump, as illustrated Figure
19A.
2) Start the vacuum pump, slowly open manifold 
valves A and B with two full turns
counterclockwise and leave the valves open.
The vacuum pump is now pulling through valves
A and B up to valve C by means of the manifold
and entire system.
3) Operate the vacuum pump for 20 to 30 minutes, 
until 600 microns of vaccum is obtained. Close 
valves A and B, and observe vacuum gauge for 
a few minutes. A rise in pressure would 
indicate a possible leak or moisture remaining in
the system. With valves A and B closed, stop 
the vacuum pump.
4) Remove the hose from the vacuum pump and
place it on the charging cylinder. See figure
18B.
Open valve C.
Discharge the line at the manifold connection.
5) The system is now ready for final charging.
6. Recharge as follows :
1) Refrigeration cycle systems are charged from the
High-side. If the total charge connot be put 
in the High-side, the balance will be put in the 
suction line through the access valve which you 
installed as the system was opened.
2) Connect the charging cylinder as shown in figure 
19B.
With valve C open, discharge the hose at the
manifold connection.
3) Open valve A and allow the proper charge to 
enter the system. Valve B is still closed.
4) If more charge is required, the high-side will not 
take it. Close valve A.
5) With the unit running, open valve B and add the 
balance of the charge.
a. Do not add the liquid refrigerant to the Low-
side.
b. Watch the Low-side gauge; allow pressure to 
rise to 30 lbs.
c. Turn off valve B and allow pressure to drop.
d. Repeat steps B and C until the balance of the 
charge is in the system.
6) When satisfied the unit is operating correctly, 
use the pinch-off tool with the unit still running 
and clamp on to the pinch-off tube. Using a tube 
cutter, cut the pinch-off tube about 2 inches from 
the pinch-off tool. Use sil-fos solder and solder 
pinch-off tube closed. Turn off the unit, allow it to 
set for a while, and then test the leakage of the 
pinch-off connection.
NOTES
If high vacuum equipment is used, just crack
valves A and B for a few minutes, then open
slowly with the two full turns counterclockwise.
This will keep oil from foaming and being
drawn into the vacuum pump.
CAUTION
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