Lg Dh4010a Owner's Manual

Dehumidifier

SERVICE MANUAL

MODEL: DH2510A

DH4010A DH5010A

CAUTION

- BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

- ONLY FOR AUTHORIZED SERVICE.

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—2—

1. PREFACE

1.1 SAFETY PRECAUTIONS

...........................................................................................................................

1.2 FEATURES

.................................................................................................................................................

1.3 DIMENSIONS

.............................................................................................................................................

1.4 SPECIFICATIONS

......................................................................................................................................

1.5 CONTROL

..................................................................................................................................................

1.6 HOW TO OPERATE DEHUMIDIFIER

........................................................................................................

1.6.1 HOW DOES THE DEHUMIDIFIER WORK?

.....................................................................................

1.6.2 LOCATION FOR THE DEHUMIDIFIER

.............................................................................................

1.6.3 SWITCH ASSEMBLY, MICRO

..........................................................................................................

1.6.4 CONTROL, DEFROST

......................................................................................................................

1.6.5 HUMIDISTAT

.....................................................................................................................................

1.6.6 DRIER ASSEMBLY

...........................................................................................................................

2. CIRCUIT DIAGRAM

............................................................................................................................

DISASSEMBLY INSTRUCTIONS

3.1 MECHANICAL PARTS

...............................................................................................................................

3.1.1 BUCKET AND AIR FILTER

...............................................................................................................

3.1.2 FRONT GRILLE

.................................................................................................................................

3.1.3 CONTROL BOX ASSY AND CABINET

.............................................................................................

3.2 CONTROL PARTS AND CYCLE PARTS

.................................................................................................

3.2.1 ROTARY SWITCH, HUMIDISTAT AND NEON LAMP

....................................................................

3.2.2 CAPACITOR AND TERMINAL BLOCK

...........................................................................................

3.2.3 DEFROST CONTROL

.....................................................................................................................

3.2.4 MICRO SWITCH ASSY

...................................................................................................................

3.2.5 POWER CORD ASSY

.....................................................................................................................

3.2.6 FAN AND MOTOR

...........................................................................................................................

3.2.7 HOUSING ASSY

.............................................................................................................................

3.2.8 P.T.C. ASSEMBLY OR OVERLOAD PROTECTOR (O.L.P.)

.........................................................

3.2.9 COMPRESSOR

..............................................................................................................................

3.3 REFRIGERATING CYCLE

.......................................................................................................................

3.3.1 CONDENSER ASSEMBLY AND EVAPORATOR ASSEMBLY (HEAT EXCHANGE ASSEMBLY)

...................................................................................................

3.3.2 CAPILLARY TUBE ASSEMBLY

......................................................................................................

3.4 HOW TO REPLACE REFRIGERATION SYSTEM

...................................................................................

4. TROUBLESHOOTING GUIDE

...................................................................................................

5. EXPLODED VIEW - INTRODUCTION

..................................................................................

6. REPLACEMENT PARTS LIST

...................................................................................................

CONTENTS

—3—

1. PREFACE

This Service Manual provides various service information, containing the mechanical and electrical parts etc. This dehumidifier was manufactured and assembled under the strict quality control system.

The refrigerant is charged at the factory. Be sure to read the safety precaution prior to servicing the unit.

1.1 SAFETY PRECAUTIONS

• Disconnect power supply before servicing or replacing any electrical or non-electrical component.

• Do not, under any circumstances, cut off the grounding prong or alter the plug in any manner.

1.2 FEATURES

• High efficiency

• Quiet

• Adjustable humidistat

• Automatic defrost

• Automatic shut-off

• Water-full indicator light

• Adjustable water level

• Easy roll casters

• Removable & large capacity bucket, direct hose connectable

• Washable air filter

• Fan speed: High/Low 2 fan speeds

• Drain hose connection.

1.3 DIMENSIONS (mm/in)

320 (12 9/16) 340 (13 3/8)

445 (17 1/2)

530 (20 3/16)

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1.4 SPECIFICATIONS

DH2510A DH4010A DH5010A

CAPACITY (Pint/Day) 25 40 50 POWER SUPPLY (Phase, V, Hz) 1ø, 115V, 60Hz REFRIGERANT R134a R22 REFRIGERANT CHARGE, oz(g) 4.4(125) 5.1(145) 7.2(204) CONTROL, DEFROST OPEN : 35.6˚F(3˚C )

CLOSE : 53.6˚F(13˚C )

HUMIDISTAT CONTROL RANGE : 20% ~ 80% RH

NORMAL SETTING : 42 ± 5% RH

COMPRESSOR MODEL NO. LX72HACG QA082CH11A

TYPE P220MC TIME

AMPERE

VOLTAGE 300V

CAPACITOR - 25µF, 350/370VAC SWITCH, ROTARY 20A, 125/250VAC MOTOR ASSEMBLY, SINGLE SWITCH ASSEMBLY, MICRO 16A, 125/250VAC

WITHOUT BUCKET

320 x 530 x 340 (12 9/16 x 20 13/16 x 13 3/8)

WITH BUCKET 320 x 530 x 445 (12

9/16 x 20 13/16 x 17 1/2)

NET WEIGHT, kg(lbs) 22.5 (49.6) 18.5(40.7) 20(44.1)

MODELS

ITEMS

P.T.C. ASSEMBLY

MAXIMUM

WORKING TIME: 0.2 ~ 0.7 sec.

RETURN TIME: 60 sec.

–

4P, less than 45W, less than 0.4A, T.P: 17AM0335-4(266°F/130°C)

• OVERLOAD PROTECTOR FOR COMPRESSOR

• INTERNAL PROTECTOR FOR MOTOR ASSEMBLY, SINGLE

OUTSIDE

DIMENSIONS

W x H x D, mm(in)

PROTECTOR

※※

NOTE : Specifications are subject to minor change without notice for further improvement.

+ 3 – 3

1.6.1 HOW DOES THE DEHUMIDIFIER WORK?

The dehumidifier, as shown in Figure 1, consists of a small refrigerant system and a fan. The fan pulls humid air from the room, across the cold evaporator coil where the water drips off into a bucket or drain hose.

1.6.2 LOCATION FOR THE DEHUMIDIFIER

1. In order for the unit to operate effectively, all doors, windows and other openings should be closed. Moisture-laden outdoor air will only add to the dehumidifier's operating load.

2. Allow at least 12 inches of space on all sides of the unit for good air circulation.

3. Install your dehumidifier on a floor, table, or shelf. When installing the dehumidifier on a table or shelf, make sure the table or shelf is strong enough to support the weight of the dehumidifier with a full bucket. Do not sit or stand on the dehumidifier.

NOTE: The height of a table or shelf might provide

a better position from which to handle the bucket and help prevent icing of the coils due to colder air near the floor (such as in a basement).

Humidity Control

• The Humidity Control can be set anywhere between Off and Max for normal operation. If you need more dehumidification, turn the Humidity Control toward Max. If you need less dehumidification, turn the Humidity Control toward Off.

• Turn the Humidity Control to Off to stop the unit manually.

Fan Speed

• If you want to control the speed of air flow, turn the Fan Speed toward Low or High.

Auto Shut-Off

LAMP ON : Bucket is full. LAMP OFF : Bucket isn't full.

• When the bucket is full, operation automatically shuts down and a lamp also lights.

—5—

HighLow

Humidity Control

Fan Speed

Auto

Shut-Off

Off

Max.

Dry

Air Out

Humid

Air In

Fan

Compressor

Side View

Bucket

Condenser

Assembly

Evaporator

Assembly

Drain Connection

Motor

Assembly

12"

Air In

Air Out

12"

Figure 1

Figure 2

1.6 HOW TO OPERATE DEHUMIDIFIER

1.5 CONTROL

1.6.5 HUMIDISTAT

Humidistat maintains the constant relative humidity in the room automatically to satisfy particular need.

(When the relative humidity in the room increases to the selected level, the dehumidifier starts automatically.) Once the relative humidity drops to the selected level, the dehumidifier stops automatically.

When first using the dehumidifier, it is recommended, for the first three or four days, to operate the unit with the humidistat control set at the MAX. At this setting, the unit will run continuously.

When the sweating has stopped and the dampness odors have gone, it is preferable to select the humidistat position that will best suit local conditions.

The relative humidity range it can control is from 20 % to 80%. (See Figure 3)

NOTE: The relative humidity at the number is the

approximate value.

1.6.6 DRIER ASSEMBLY

Dryer is used to prevent water from overflowing in all tubes and H/E assembly-condenser assembly and evaporator assembly-and an acid, water and bad material from heating oil. Also, dryer is used to remove corrosion of the components.

NOTE: When dryer is replaced, proper injection to

capillary is needed. On opening the dryer, it should be welded instantly. The oxidization of dryer inside and all tubes inside after welding can be prevented.(For Model DH2510A)

—6—

42% R.H

40%

7(30%)

6(35%)4(50%)

3(60%)

2(70%)

1(80%)

5(42%)

8(25%)

9(20%)

Max.Off

DEAD DIAL

Dryer

Figure 4

Figure 3

1.6.3 SWITCH ASSEMBLY, MICRO

The micro switch assembly, which is located on the back of the unit, automatically shuts off the dehumidifier when the bucket is full (note, the Auto Shut Off lights, to indicate bucket must be emptied). Once the bucket has been emptied and replaced, the unit once again turns itself on.

NOTE: Before removing the bucket, turn the Humidity Control to Off.

1.6.4 CONTROL, DEFROST

The Defrost Control senses frost build-up on the evaporator coil and automatically shuts off the compressor. The fan continues to run, drawing air across the coil and melting the frost. When the coil is defrosted, the compressor automatically restarts, and dehumidifying resumes.

NOTE: Do not operate the dehumidifier at temperature below 65˚F(18˚C). If your dehumidifier runs when the

temperature and humidity conditions of room are low, frost can form in its evaporator coil. This interferes with proper operation.

—7—

2. CIRCUIT DIAGRAM

• MODEL : DH2510

LAMP,

NEON

TERMINAL

BLOCK

WIRING DIAGRAM 3854A20015B

CONTROL,

DEFROST

O.L.P.

SWITCH, ROTARY

BRBR

BR BR

HUMIDISTAT

COMP.

BK(BR)WH(BL)

BL YL

OR(COM)

RD(L)

BK(HI)

CAPACITOR

RD(L)

BK(HI)

GR/YL

N.O

N.C

MOTOR

SWITCH,

LAMP

Q'TY

PER SET

1 1 1 1 1 1 1 1 1 1 1

RE-

MARKS

S S S S S S S S S S S

LOCATION

NO.

1 2 3 4 5 6 7 8

9 10 11

DESCRIPTION

POWER CORD ASSEMBLY SWITCH, ROTARY MOTOR ASSEMBLY, SINGLE P.T.C. ASSEMBLY COMPRESSOR O.L.P. LAMP, NEON CONTROL, DEFROST HUMIDISTAT SWITCH ASSEMBLY, MICRO TERMINAL BLOCK

DH2510A

6411A20001K 6600A20001A 4681A20034B

6748C-0003D

5416A20002B

6750C-0009B 6912A30001D 6614A30001D 5216A20001A 6600A30003A 6640A40001A

PART NO.

※ S: SERVICE PARTS A: ALTERNATE PARTS N: NOT SERVICE PARTS

—8—

• MODEL : DH4010A, DH5010A

LAMP,

NEON

TERMINAL

BLOCK

WIRING DIAGRAM 3854A20015A

CONTROL,

DEFROST

O.L.P.

SWITCH, ROTARY

BRBR

BR BR

HUMIDISTAT

COMP.

BK(BR)WH(BL)

BL YL

OR(COM)

RD(L)

BK(HI)

CAPACITOR

RD(L)

BK(HI)

GR/YL

N.O

N.C

MOTOR

SWITCH,

LAMP

Q'TY

PER SET

1 1 1 1 1 1 1 1 1

1 1 2

RE-

MARKS

S S S S S S S S S S

LOCATION

NO.

1 2 3 4 5 6 7 8 9

DESCRIPTION

POWER CORD ASSEMBLY SWITCH, ROTARY MOTOR ASSEMBLY SINGLE CAPACITOR COMPRESSOR O.L.P. LAMP, NEON CONTROL, DEFROST HUMIDISTAT SWITCH ASSEMBLY, MICRO

DH4010A DH5010A

6411A20001K 6600A20001A 4681A20034A

6120AR2194S

5416AR2179J

6750U-L039A 6912A30001D 6614A30001D

5216A20001A 6600A30003A

PART NO.

※ S: SERVICE PARTS A: ALTERNATE PARTS N: NOT SERVICE PARTS

3.1 MECHANICAL PARTS

3.1.1 BUCKET AND AIR FILTER

1. Disconnect the power supply.

2. Turn the Humidity Control off.

3. Remove the bucket (See Figure 5)

4. Flex the filter at the lower right corner and take it off. (See Figure 5)

3.1.2 FRONT GRILLE

1. Remove 2 screws which fasten the front grille.

2. By pushing the both sides of front grille, pull the front grille forward and upward. (See Figure 6)

3.1.3.

CONTROL BOX ASSY AND CABINET

1. Remove the Bucket, the Air filter and Front grille according to the procedure above.

2. Remove 3 screws that fasten Control box assy.(See Figure 7)

3. Remove 9 screws on all sides of the cabinet.

4. Lift the Cabinet from the base.

5. Unhook control box assy from two up and lower hooks on the Housing assy like Figure 8.

—9—

3. DISASSEMBLY INSTRUCTIONS

Push

Figure 5

Figure 6

Figure 7 Figure 8

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