Samsung AW0719 User manual

ROOM AIR CONDITIONER
AW0719
AW0819
AIR CONDITIONER CONTENTS
1. Precautions
2. Product Specifications
3. Operating Instructions and
Installation
4. Disassembly and Reassembly
5. Troubleshooting
6. Exploded Views and Parts List
7. Block Diagram
8. Wiring Diagram
SERVICE Manual
AW0719//0819/front 2/24/99 7:06 PM Page 2

Samsung Electronics 1-1
1. Precautions
1. Warning: Prior to repair, disconnect the
power cord from the circuit breaker.
2. Use proper parts: Use only exact
replacement parts. (Also, we recommend
replacing parts rather than repairing them.)
3. Use the proper tools: Use the proper tools
and test equipment, and know how to use
equipment may cause problems later-
intermittent contact, for example.
4. Power Cord: Prior to repair, check the
power cord and replace it if necessary.
5. Avoid using an extension cord, and avoid
tapping into a power cord. This practice
may result in malfunction or fire.
6. After completing repairs and reassembly,
check the insulation resistance, Procedure:
Prior to applying power, measure the
resistance between the power cord and the
ground terminal. The resistance must be
greater than 30 megohms.
7. Make sure that the grounds are adequate.
8. Make sure that the installation conditions
are satisfactory. Relocate the unit if
necessary.
9. Keep children away from the unit while it is
being repaired.
10. Be sure to clean the unit and its surrounding
area.
Fig. 1-1 Avoid Dangerous Contact
Fig. 1-2 No Tapping and No Extension Cords
Fig. 1-3 No Kids Nearby!
Fig. 1-4 Clean the Unit
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Samsung Electronics 2-1
2. Product Specifications
2-1 Table
Item
Type
Dimensions:
(Width X Height X Depth)
Packing Size
(Width X Height X Depth)
Voltage:
Phase
Frequency
Operating Current
Power Consumption
Refrigerant Type
Refrigerant Charge
Cooling Capacity
EER
Net Weight
Condenser
Condenser Fan
Evaporator
Evaporator Fan
Fan Motor
Compressor(Rotary)
Overload Protect
Compressor Capacitor
Fan Motor Capacitor
Fan Speed
Themo Control
Unit of Measure
-
mm (inch)
mm (inch)
Volt
-
Hz
A
W
FREON
g
BTU/h
BTU/h.W
kg
Row
Type
Row
Type
W
Model
-
µF/ VAC
-
-
AW0719
7.0
740
420
7,000
9.5
29
44A072HW1E1
MRA98706-12008
25 / 370 Dual Type
6 / 370
115
Single
60
R-22
2 x15
Propeller Fan
2 x14
Blower
IC-9630SWD6D
2 Speeds
Thermostat
AW0819
7.5
840
420
8,000
9.5
29
44A080HW1E1
MRA12083-12008
30 / 370 Dual Type
6 / 370
Remarks
Window
520 X 345 X 485 (20.5 X 13.6 X 19.1)
571 X 449 X 546 (22.5 X 17.7 X 21.5)
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2-2 Samsung Electronics
2-2 Dimensions
2-2-1 Main Unit
520
345 345
485
Front view Side view
Unit : mm
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Samsung Electronics 3-1
3. Installation and Operating Instructions
3-1 Installation
3-1-1 Selecting Area for Installation
1. Make sure that you install the unit in an area
providing good ventilation. The air conditioner
must not be blocked by any obstacles affecting the
airflow near the air inlet and the air outlet.
2. Make sure that you install the unit in an area that
allows good air handling. The installation area
must be able to endure vibration from the unit.
3. Make sure that you install the unit away from heat
or vapor.
4. Make sure that you install the unit in an area
which is cool and has adequate space.
5. Make sure that you install the unit in an area away
from TVs, audio units, cordless phones,
fluorescent lighting fixtures and other electrical
appliances (at least 1 meter clearance).
6. Make sure that you install the unit in an area which
provides easy drainage for condensed water.
7. Make sure that you install the unit in area not
exposed to the rain or direct sunlight.
(Install a separate sunblind if exposed to direct
sunlight).
8. Make sure that you install the unit in an area
allowing good air movement. Do not install it in
a space that would cause noise amplification
of noise.
9. Fix the unit firmly if mounted in a high place.
Caution:
Do not use the air conditioner in the following environments : greasy areas (including areas near machines),
or marine areas. Contact your local dealer for advice.
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3-2 Samsung Electronics
3-2 Controls and Components
3-2-1 Thermostat
3-2-2 Fan Selector Switch & Operation Switch
The fan selector switch offers high and low fan cooling control levels to assure maimum comfort. The two fan speeds
allow you to economically circulate room air flow on days when intense cooling is not required. When combined with the
thermostat (set to call for conditioned air), these controls cool, dehumidify, filter, and circulate room air, with the fan
continuing to circulate air even when the compressor is turned off.
3-2-3 Ventilation Control
Use the ventilation switch to exhaust unfresh air.
Open position : The air inside the room circulates, while exhausted is sent outside.
Closed position : The air inside the room circulates without exhaust.
OFF :
When room temperature is lowered by the air
conditioner, the gas within the thermostat will
contract and cause a break in the electrical
contact. The compressor will then stop.
After the compressor stops, the room
temperature will rise.
ON :
As the room temperature increases to a
selected level, the gas within the thermostat
expands causing electrical contact, which
provides the source of electric power to the
compressor. The room temperature will fall
and the cycle will repeat.
Control Operation :
By turning the control knob clockwise (toward
higher numbers), the temperature will be cooler.
By turning the control knob counterclockwise
(toward lower numbers), the temperature will be
warmer.
Level 1 : Cool air will be supplied above 30~35¡C
Cool air will cease below 28~32.5¡C
Level 10 : Cool air will be supplied above 17.4~20.4¡C
Cool air will cease below 14.4~17.4¡C
OFF
LOW
COOL
LOW
FAN
HI
FAN HI
COOL
OPERATION THERMOSTAT
4
2
8
COOLEST
12
10
6
Temperature
control dial
Operating mode
selection dial
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Samsung Electronics 4-1
4. Disassembly and Reassembly
4-1. Compressor Replacement Flow Chart
Locate cause of defect
Release refrigerant
Disconnect electrical
wiring from compressor
Cut refrigerant lines
from compressor
Plug disconnected lines
Replace compressor
Inspect electrical
wiring for defects,
and terminals for
correct and secure
connections
Solder discharge line
Corrective action Check refrigerant oil level
Add oil as necessary
Solder suction line Use nitrogen gas
Perform soldering function
Fill system with nitrogen gas
Check for leakage
Pinch and braze filling tube
Recharge system
Evacuate system
Release nitrogen gas?
Problem?
Low oil level? NY
Y N
N
Y
Leakage?
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4-2 Samsung Electronics4-2
4-2 Checking the oil
4-3 Refrigerant Oil Specifications
Put approximately 10cc oil into a transparent container and test it.
4-2-1 Oil quality
4-2-2 Changing and adding refrigerant oil
1. Change the compressor - DO NOT recharge the oil as the compressor itself is
already charged.
2. Change the condenser .... add 50cc
3. Change the evaporator .... add 50cc
4. When the refrigerant is replaced .... add 30cc oil.
5. After vacuum is completed, the oil is filled through the high pressure side.
6. In the event of a refrigerant leak, generally it is not necessary to add oil.
(unless the oil has leaked significantly).
Normal
Over-heated
Motor Damage
Condition of
Refrigerant Cycle Color
Straw Yellow
Brown Color
Dark Brown
Odor
No Odor
-
Pungent oil
Return with the system
Change the oil
Change the oil
Remarks
Oil Condition
AW0719
AW0819 280cc SONTEX 200LT
Oil ChargeModel Oil specification
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Samsung Electronics 4-3
4-3 Disassembly and Reassembly Procedure
Stop operating the air conditioner, and pull out the power cord before repair.
No. Part name Procedures Remarks
①
➁
➂
Ass'y Grill
Ass'y Cabinet
Ass'y Control
1. Pull out the Guard-air filter on the front grille.
2. Remove the Screw on the front grille.
3. Push the front grille left side and pull up.
1. Remove the two screws both side cabinet.
2. Pull the front both side, and remove the unit
from the cabinet.
1. Remove the blade V and arm blade
2. Remove 2 screws, and earth wire screw.
3. Remove two lead wire assemblies.
4. Take out the control box forward.
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4-4 Samsung Electronics
Disassembly and Reassembly
No. Part name Procedures Remarks
➃
➄
Frame Up
Case Cond &
Propeller Fan
1. Remove 6 screws on the Frame up
and remove the Frame up and the reinf
from case cond.
1. Remove two screws on the bottom side,
and 4 screws on the case cond.
2. Pull up the case cond and separate the
cond case from the cond.
3. Remove the nut flange, and remove the
propeller fan
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