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

AW0719//0819-1 1/29/99 1:37 PM Page 1-1

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)

Volt

FREON

BTU/h

BTU/h.W

Row

Type

Row

Type

Model

µF/ VAC

AW0719

7.0

740

420

7,000

9.5

44A072HW1E1

MRA98706-12008

25 / 370 Dual Type

6 / 370

115

Single

R-22

2 x15

Propeller Fan

2 x14

Blower

IC-9630SWD6D

2 Speeds

Thermostat

AW0819

7.5

840

420

8,000

9.5

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)

AW0719//0819-1 1/29/99 1:37 PM Page 1-3

2-2 Samsung Electronics

2-2 Dimensions

2-2-1 Main Unit

520

345

485

Front view Side view

Unit : mm

AW0719//0819-1 1/29/99 1:37 PM Page 1-4

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.

AW0719//0819-1 1/29/99 1:38 PM Page 3-1

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

FAN HI

COOL

OPERATION THERMOSTAT

COOLEST

Temperature

control dial

Operating mode

selection dial

AW0719//0819-1 1/29/99 1:38 PM Page 3-2

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

Leakage?

AW0719//0819-1 1/29/99 1:38 PM Page 4-1

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

Remarks

Oil Condition

AW0719

AW0819 280cc SONTEX 200LT

Oil ChargeModel Oil specification

AW0719//0819-1 1/29/99 1:38 PM Page 4-2

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.

AW0719//0819-1 1/29/99 1:38 PM Page 4-3

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

AW0719//0819-1 1/29/99 1:38 PM Page 4-4

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