Dehumidifier
Service and Parts
Manual
D30A / D40A / D50A / D65A (03/03)
D30A D40A D50A D65A
—2—
1. PREFACE
1.1 SAFETY PRECAUTIONS...........................................................................................................................3
1.2 FEATURES AND DIMENSIONS ................................................................................................................3
1.2.1 FEATURES........................................................................................................................................3
1.2.2 DIMENSIONS....................................................................................................................................3
1.3 SPECIFICATIONS......................................................................................................................................4
1.4 CONTROL ..................................................................................................................................................5
1.5 HOW TO OPERATE DEHUMIDIFIER........................................................................................................6
1.5.1 HOW DOES THE DEHUMIDIFIER WORK? .....................................................................................6
1.5.2 LOCATION FOR THE DEHUMIDIFIER.............................................................................................6
1.5.3 MICRO SWITCH................................................................................................................................6
1.5.4 AUTO DEFROST...............................................................................................................................6
1.5.5 HUMIDITY CONTROLLER................................................................................................................7
1.5.6 DRIER ...............................................................................................................................................7
2. CIRCUIT DIAGRAM............................................................................................................................8
3.
DISASSEMBLY INSTRUCTIONS
3.1 MECHANICAL PARTS .............................................................................................................................10
3.1.1 BUCKET AND AIR FILTER.............................................................................................................10
3.1.2 FRONT CASE AND TOP COVER...................................................................................................10
3.1.3 CABINET AND CONTROL BOX .....................................................................................................10
3.2 CONTROL PARTS ..................................................................................................................................11
3.2.1 POWER CORD ASSEMBLY...........................................................................................................11
3.2.2 SENSOR ASSEMBLY.....................................................................................................................11
3.2.3 PWB(PCB) ASSEMBLY, MAIN .......................................................................................................11
3.2.4 CAPACITOR....................................................................................................................................11
3.2.5 MICRO SWITCH ASSEMBLY.........................................................................................................11
3.2.6 CONTROL PANEL ..........................................................................................................................12
3.2.7 HOUSING ASSEMBLY, FAN AND MOTOR ...................................................................................12
3.2.8 DRAIN PAN.....................................................................................................................................13
3.3 REFRIGERATING CYCLE .......................................................................................................................13
3.3.1 CONDENSER, EVAPORATOR AND CAPILLARY TUBE...............................................................13
3.3.2 P.T.C. OR OVERLOAD PROTECTOR (O.L.P.) FOR RECIPROCATING COMPRESSOR ...........13
3.3.3 ROTARY COMPRESSOR ..............................................................................................................13
3.4 HOW TO REPLACE REFRIGERATION SYSTEM...................................................................................14
4. TROUBLESHOOTING GUIDE...................................................................................................16
5. EXPLODED VIEW - INTRODUCTION..................................................................................19
6. REPLACEMENT PARTS LIST...................................................................................................23
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 cut off the grounding prong or alter the plug in any manner at any circumstances.
1.2 FEATURES AND DIMENSIONS
1.2.1 FEATURES
• Quiet operation
• High efficiency
• Adjustable humidistat
• Automatic defrost
• Automatic shut-off
• Bucket-full indicator light
• Easy roll casters
• Removable & large capacity bucket.
• Washable air filter
• Two-speed fan
• Drain hose connection.
1.2.2 DIMENSIONS (mm/in)
385 (15
3
/
16
) 340 (13
6
/
16
)
530 (20
14
/
16
)
385 (15
3
/
16
) 340 (13
6
/
16
)
600 (23
10
/
16
)
D30A/D40A Model D50A/D65A Model
Figure 1
HUMIDITY
CONTROL
FAN
SPEED
TIMER
BUCKET
FULL
High
Low
Continuous On.
4Hr. On/Off
2Hr. On/Off
POWER
HUMIDITY
CONTROL
FAN
SPEED
TIMER
BUCKET
FULL
High
Low
Continuous On.
4Hr. On/Off
2Hr. On/Off
POWER
—4—
1.3 SPECIFICATIONS
CAPACITY (Pints/24hrs) 30 40 50 65
POWER SUPPLY (Phase, V, Hz) 1ø, 115V, 60Hz
REFRIGERANT R134a R22
REFRIGERANT CHARGE, oz(g) 5.47(155) 5.64(160) 7.23(205) 7.76(220)
THERMISTOR
OPEN
30.2°F(-1 ±0.5°C) 32.9°F(0.5 ±0.5°C) 30.2°F(-1 ±0.5°C)
CLOSE
50.0°F(10 ±0.5°C) 53.6°F(12 ±0.5°C) 50.0°F(10 ±0.5°C)
COMPRESSOR MODEL NO. LX86HAQG 2S7B126A QA084CBB QA114CBF
TYPE P6R8MC
TIME
AMPERE
10A
VOLTAGE 200V
PROTECTOR
• OVERLOAD PROTECTOR FOR COMPRESSOR
• INTERNAL PROTECTOR(FUSE) FOR MOTOR
CAPACITOR -
40µF, 200VAC 30µF, 270VAC 35µF, 270VAC
MOTOR ASSEMBLY, SINGLE
Shaded pole motor, 65W/1A , Thermal cutoff : 266°F/130°C
SWITCH ASSEMBLY, MICRO 15A/250VAC
30, 40 PINTS 385 x 530 x 340 (15
3
/
16
x 20
14
/
16
x 13
6
/
16
)
50, 60 PINTS 385 x 600 x 340 (15
3
/
16
x 23
10
/
16
x 16
6
/
16
)
NET WEIGHT, kg(lbs) 22.7(50.0) 17.2(37.8) 21.2(46.8) 21.6(47.6)
MODELS
ITEMS
P.T.C.
ASSEMBLY
MAXIMUM
-
WORKING TIME: 0.3 ~ 1.3 sec.
RETURN TIME: 65 sec.
–
OUTSIDE
DIMENSIONS
W x H x D, mm(in)
NOTE : Specifications are subject to minor change without notice for further improvement.
D30A D40A D50A D65A
—5—
Bucket Full Indicator
• This light glows when the water bucket is
full and needs to be emptied.
Power
• Operation starts when this button is
pressed and stops when the button is
pressed again.
Fan Speed
• This controls the speed of the airflow.
• High: Fan speed is set to high.
• Low: Fan speed is set to low.
• When Fan Speed button is pressed,
the fan speed mode is changed.
Timer
• Press this button to select type of operation.
• Select continuous for uninterrupted operation.
• Select either 2 or 4 Hr. On/Off for cycled
operation:
The unit will operate for 2 or 4 hours, and then
shut off completely for 2 or 4 hours.
The cycle repeats until you change the setting.
• When Timer button is pressed, the Timer
indicator lights shift as follows: Continuous ➔
2 Hr. On/Off ➔ 4 Hr. On/Off ➔ Continuous .
Humidity Control
• This button controls the humidity in the room.
• Press button to raise the humidity setting.
• Press button to lower the humidity setting.
• The humidity setting can be set to a permanent "On"
setting or to a specific humidity setting between 35% and
70% in 5% increments.
• "On" setting: Dehumidifier runs continuously regardless
of humidity condition.
• 35% - 70% setting: Dehumidifier runs on and off
according to surrounding humidity conditions.
Auto Restart
•
Once power is restored after a power outage, the unit
returns to its previous operation setting after a 2 minute
delay.
The fan runs immediately when the power is restored.
Figure 2
HUMIDITY
CONTROL
FAN
SPEED
TIMER
BUCKET
FULL
High
Low
Continuous
4Hr. On/Off
2Hr. On/Off
POWER
1.4 CONTROL
—6—
1.5.1 HOW DOES THE DEHUMIDIFIER WORK?
Moist, humid air is drawn over a cold refrigerated
dehumidifying coil. Moisture in the air condenses on this
coil and drains into a bucket (or through the bucket into a
hose and drain).
Dry, clean air is drawn over the condenser where it is
actually heated several degrees and discharged out the
front grille into the room. (See Figure 3)
■ It is normal for the surrounding air to become
slightly warmer as the dehumidifier operates.
This warming effect further reduces the relative humidity
of the surrounding air.
1.5.2 LOCATION FOR THE DEHUMIDIFIER
Allow at least 12 inches of space on all sides of the
unit for good air circulation. (See Figure 4)
■ The dehumidifier must be operated in an enclosed
area to be most effective.
■ Close all doors, windows and other outside
openings to the room.
Place the dehumidifier in a location that does not
restrict air flow into the rear coil or out the front grille.
The operation of dehumidifier in a basement will have
little or no effect in drying an adjacent enclosed
storage area, such as a closet, unless there is
adequate circulation of air in and out of the area.
Dry
Air Out
Humid
Air In
Fan
Condenser
Evaporator
Motor
Drain
Connection
Compressor
Bucket
12"
12"
Figure 3
Figure 4
1.5 HOW TO OPERATE DEHUMIDIFIER
1.5.3 MICRO SWITCH
The micro switch assembly, which is located on the drain pan of inside unit, automatically shuts off the dehumidifier when the
bucket is full (note, the Auto Shut Off lights, to indicate bucket must be emptied). The bucket replaces in its place, the unit again
turns itself on.
1.5.4 AUTO DEFROST
When frost builds up on the cooling coils, the unit will automatically cycle off until the frost disappears. The fan continues to run.
NOTE: The unit is designed to be operated at temperature above 65°F(18°C) in normal condition. If the dehumidifier is
operated in low temperature conditions, the temperature and humidity conditions of room are low, some frost
can be formed in its evaporator coil and the unit will be operated ON/OFF repeatedly. In this case, please check
on your room temperature condition and stop the unit.
1.5.5 HUMIDITY CONTROLLER
The humidity control can be set 'On' or 35%-70%
RH(Relative Humidity) for normal operation. (See Figure 5)
If you need drier air, press the Humidity Control button.
If you need moister air, press the Humidity Control
button.
Press the Power button to stop the unit manually.
1.5.6 DRIER (D30A)
Dryer is used to prevent capillary blockage from moisture in
the refrigerant system and H/E, condenser and evaporator.
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.
—7—
Dryer
Figure 5
Figure 6
—8—
2. CIRCUIT DIAGRAM
• MODEL : D30A
WIRING DIAGRAM
3854A20247E
MAIN PCB
CN-FAN
CN-AC1
RY-COMP
RY-LO
RY-HI
FUSE 250V T3.15A
POWER
TRANS
CN-AC2
CN-SEN
CN-DISP1
HUMIDITY
SENSOR
THERMISTOR
DISPLAY P.C.B
BUCKET
S/W
43
BK
BR
WH(BL) (N)
BK(BR) (L)
BK(HI)
RD(LOW)
OR(COM)
MOTOR
GN/YL
GN/YL
36
5
4
BL
M
C
S
O.L.P
COMP.
Q'TY
PER SET
1
1
1
1
1
1
1
1
1
RE-
MARKS
S
S
S
S
S
S
S
S
S
LOCATION
NO.
1
2
3
4
5
6
7
8
9
DESCRIPTION
POWER CORD ASSEMBLY
MOTOR ASSEMBLY, SINGLE
P.T.C. ASSEMBLY
RE-COMPRESSOR, SET
O.L.P.
PWB(PCB) ASSEMBLY, DISPLAY
SENSOR ASSEMBLY
SWITCH ASSEMBLY, MICRO
PWB(PCB) ASSEMBLY, MAIN
D30A
6411A20001Y
4681A20040E
6748C-0003D
2521C-A8626
6750C-0009E
6871A20279B
6877A30013H
6600A30003C
6871A20162K
PART NO.
S: SERVICE PARTS A: ALTERNATE PARTS N: NOT SERVICE PARTS
—9—
• MODEL : D40A/D50A/D65A
WIRING DIAGRAM
3854A20247F
MAIN PCB
CN-FAN
CN-AC1
RY-COMP
RY-LO
RY-HI
FUSE 250V T3.15A
POWER
TRANS
CN-AC2
CN-SEN
CN-DISP1
HUMIDITY
SENSOR
THERMISTOR
DISPLAY P.C.B
BUCKET
S/W
43
BL
BR
RD
WH(BL) (N)
BK(BR) (L)
BK
BK(HI)
RD(LOW)
OR(COM)
MOTOR
R
C
S
O.L.P
COMP.
GN/YL
GN/YL
CAPACITOR
C
H
Q'TY
PER SET
1
1
1
1
1
1
1
1
1
RE-
MARKS
S
S
S
S
S
S
S
S
S
LOCATION
NO.
1
2
3
4
5
6
7
8
9
DESCRIPTION
POWER CORD ASSEMBLY
MOTOR ASSEMBLY SINGLE
CAPACITOR
COMPRESSOR (ROTARY), SET
O.L.P. (ASSEMBLY)
PWB(PCB) ASSEMBLY, DISPLAY
SENSOR ASSEMBLY
SWITCH ASSEMBLY, MICRO
PWB(PCB) ASSEMBLY, MAIN
D40A D50A D65A
6411A20001Y 6411A20001Z
4681A20040E
0CZZA20003D 0CZZA20001R 6120AR2359V
5416A90009A 2520UCDA003 2520UCDA004
6751A20001F 6750U-L058A 6750U-L048A
6871A20279A
6877A30013H
6600A30003C
6871A20162L 6871A20162K
PART NO.
S: SERVICE PARTS A: ALTERNATE PARTS N: NOT SERVICE PARTS
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