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Dehumidifier SERVICE MANUAL

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Dehumidifier SERVICE MANUAL http://biz.LGservice.com Dehumidifier SERVICE MANUAL MODELS: DH300EY5/DH305Y5/DH300MY5 LD40Y5/DH400MY5 DH404EY5/DH400EY5/LD40EY5 DH504ELY5/LD50ELY5 LD65ELY5 CAUTION - BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. - ONLY FOR AUTHORIZED SERVICE. CONTENTS 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 MODEL NAMES .........................................................................................................................................4 1.4 SPECIFICATIONS......................................................................................................................................4 1.5 CONTROL TYPE........................................................................................................................................5 1.5.1 MECHANICAL TYPE.........................................................................................................................5 1.5.2 ELECTRONIC TYPE .........................................................................................................................5 1.6 HOW TO OPERATE DEHUMIDIFIER........................................................................................................6 1.6.1 HOW DOES THE DEHUMIDIFIER WORK? .....................................................................................6 1.6.2 LOCATION FOR THE DEHUMIDIFIER.............................................................................................6 1.6.3 MICRO SWITCH................................................................................................................................6 1.6.4 AUTO DEFROST...............................................................................................................................6 1.6.5 HUMIDITY CONTROLLER................................................................................................................7 2. CIRCUIT DIAGRAM............................................................................................................................8 3. DISASSEMBLY INSTRUCTIONS 3.1 MECHANICAL PARTS .............................................................................................................................13 3.1.1 BUCKET AND AIR FILTER .............................................................................................................13 3.1.2 FRONT CASE AND TOP COVER...................................................................................................13 3.1.3 CABINET AND CONTROL BOX .....................................................................................................13 3.2 CONTROL PARTS ..................................................................................................................................14 3.2.1 POWER CORD ASSEMBLY ...........................................................................................................14 3.2.2 SENSOR ASSEMBLY .....................................................................................................................14 3.2.3 PWB(PCB) ASSEMBLY, MAIN .......................................................................................................14 3.2.4 CAPACITOR....................................................................................................................................14 3.2.5 MICRO SWITCH ASSEMBLY .........................................................................................................14 3.2.6 COIL ASSEMBLY, SOLENOID .......................................................................................................15 3.2.7 CONTROL PANEL ..........................................................................................................................15 3.2.8 FAN AND MOTOR...........................................................................................................................16 3.2.9 DRAIN PAN .....................................................................................................................................16 3.3 REFRIGERATING CYCLE .......................................................................................................................17 3.3.1 CONDENSER, EVAPORATOR AND CAPILLARY TUBE...............................................................17 3.3.2 ROTARY COMPRESSOR ..............................................................................................................17 3.4 HOW TO REPLACE REFRIGERATION SYSTEM...................................................................................18 4. TROUBLESHOOTING GUIDE ...................................................................................................20 5. EXPLODED VIEWS ..........................................................................................................................22 6. REPLACEMENT PARTS LIST ...................................................................................................28 —2— 1. PREFACE This Service Manual provides various service information, including the mechanical and electrical parts. This dehumidifier was manufactured and assembled under the strict quality control procedures. The refrigerant is charged at the factory. Be sure to read the safety precaution prior to servicing the unit. 1.1 SAFETY PRECAUTIONS • Disconnect the power supply before servicing or replacing any component. • Do not cut off the grounding prong or alter the plug in any manner. 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. • Low temperature operation (DH504EL/LD50EL/LD65EL) 1.2.2 DIMENSIONS (mm/in) 385 (15 5/32) 340 (13 3/8) AUTO RESTART Continuous On. HUMIDITY 4Hr. On/Off High CONTROL BUCKET FULL 2Hr. On/Off Low ENERGY STAR FAN POWER TIMER SPEED HUMIDITY SETTING ) 4 / 1 540 (21 Figure 1 —3— 1.3 MODEL NAMES MODEL NAME CAPACITY (Pints/24hrs) 30 40 50 65 MECHANICAL TYPE DH305Y5, DH300MY5 DH400MY5,LD40Y5 - - CONTROL PANEL DH300EY5 DH404Y5 DH504ELY5 LD65ELY5 ELECTRONIC TYPE DH400EY5,LD40EY5 LD50ELY5 1.4 SPECIFICATIONS DH305Y5, DH300MY5 DH400MY5, LD40Y5 DH504ELY5* LD65ELY5* MODELS DH300EY5 DH404EY5 LD50ELY5* ITEMS DH400EY5, LD40EY5 POWER SUPPLY(Phase,V,Hz) 1Ø, 115V,60Hz INPUT(W) 480 580 560 850 RUNNING CURRENT(A) 4.8 5.7 5.4 8.3 ENERGY FACTOR(L/kw.h) 1.23 1.36 1.75 1.50 REFRIGERANT R22 REFRIGERANT CHARGE, oz(g) 3.53(100) 4.94(140) 7.93(225) 8.46(240) OPEN 33.8°F(1±0.5°C) THERMISTOR CLOSE 50°F(10±0.5°C) SOLENOID VALVE* Using Temp/Humid.:-4~122°F(-20~50°C)/95%RH - - Rating:7W/90mA COMPRESSOR MODEL No. QS064CAB QS075CBA QA075CDB QA114CBD PROTECTOR OVERLOAD PROTECTOR FOR COMPRESSOR INTERNAL PROTECTOR(FUSE)FOR MOTOR CAPACITOR 35µF, 270VAC 40µF, 270VAC 35µF, 270VAC 35µF, 270VAC Shaded pole motor, 91W/1.8A, MOTOR ASSEMBLY,SINGLE Shaded pole motor, 72W/1.4A, Thermal cutoff:266°F/130°C Thermal cutoff:266°F/130°C SWITCH ASSEMBLY,MICRO 15A/250VAC OUTSIDED MENSIONS 385X540X340(15 5/32 x 21 1/4 x 13 3/8) WxHxD,mm(in) NET WEIGHT,kg(lbs) 17.6(38.9) 17.6(38.9) 20.4(44.9) 22.2(48.9) *NOTE:Specifications are subject to minor change without notice for further improvement. —4— 1.5 CONTROL TYPE 1.5.1 Mechanical type Humidity Control • When you first use the dehumidifier, turn the humidity control to 5 or 6. If you still have moisture, turn the humidity control to a higher setting. 5 4 6 MAX is the highest setting. 3 7 High • When excess moisture and dampness odors are 2 8 gone, adjust the control to a lower setting. Use the Auto Low Shut-Off 1 9 dehumidifier as long as excess moisture is present. Off Max Fan Speed Humidity Control Figure 2 Fan Speed Auto Shut-Off • The fan control adjusts the fan speed. • This light glows when the bucket is full, or when Set the fan control to HIGH for maximum moisture the bucket is removed or not placed in the proper removal. When the humidity has been reduced and position. In these cases the Water Level Control quiet operation is preferred, set the fan control to Switch shuts off the dehumidifier. LOW. • When the light glows, check the bucket condition. 1.5.2 Electronic type Bucket Full Indicator Constantly On. HUMIDITY • This light glows when the water bucket is full and needs 4hr. On/Off High CONTROL BUCKET FULL 2hr. On/Off Low to be emptied. AUTO RESTART FAN POWER TIMER SPEED HUMIDITY SETTING Power • Operation starts when this button is pressed and stops when the button is pressed again. Figure 3 Auto Restart • Once power is restored after a power outage, the unit Fan Speed returns to its previous operation setting after a 2 minute • This controls the speed of the airflow. delay. • High: Fan speed is set to high. The fan runs immediately when the power is restored. • Low: Fan speed is set to low. • When Fan Speed button is pressed, the fan speed Humidity Control mode is changed. • This button controls the humidity in the room.
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