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Dehumidifier SERVICE MANUAL

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http://biz.LGservice.com http://www.LGservice.com/techsup.html Dehumidifier SERVICE MANUAL MODEL: DH3010B(DHA3012DL) DH4010B(DHA4012DL) DH5010B(DHA5012DL) 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.................................................................................................................................................3 1.3 DIMENSIONS .............................................................................................................................................3 1.4 SPECIFICATIONS......................................................................................................................................4 1.5 CONTROL ..................................................................................................................................................5 1.6 HOW TO OPERATE DEHUMIDIFIER........................................................................................................5 1.6.1 HOW DOES THE DEHUMIDIFIER WORK? .....................................................................................5 1.6.2 LOCATION FOR THE DEHUMIDIFIER.............................................................................................5 1.6.3 MICRO SWITCH................................................................................................................................6 1.6.4 AUTO DEFROST...............................................................................................................................6 1.6.5 HUMIDISTAT.....................................................................................................................................6 1.6.6 DRIER ...............................................................................................................................................6 2. CIRCUIT DIAGRAM............................................................................................................................7 3. DISASSEMBLY INSTRUCTIONS 3.1 MECHANICAL PARTS .............................................................................................................................10 3.1.1 BUCKET AND AIR FILTER .............................................................................................................10 3.1.2 FRONT GRILLE...............................................................................................................................10 3.1.3 CABINET AND CONTROL BOX .....................................................................................................10 3.2 CONTROL PARTS ..................................................................................................................................11 3.2.1 ROTARY SWITCH, HUMIDISTAT AND NEON LAMP....................................................................11 3.2.2 CAPACITOR ...................................................................................................................................11 3.2.3 DEFROST CONTROL .....................................................................................................................11 3.2.4 THERMOSTAT CONTROL .............................................................................................................11 3.2.5 MICRO SWITCH ASSY ...................................................................................................................11 3.2.6 POWER CORD ASSY .....................................................................................................................11 3.2.7 FAN AND MOTOR...........................................................................................................................12 3.2.8 SHROUD AND BARRIER................................................................................................................12 3.3 REFRIGERATING CYCLE .......................................................................................................................13 3.3.1 CONDENSER, EVAPORATOR AND CAPILLARY TUBE (HEAT EXCHANGE ASSEMBLY) ...................................................................................................13 3.3.2 P.T.C. OR OVERLOAD PROTECTOR (O.L.P.) FOR RECIPROCATING COMPRESSOR ...........14 3.3.3 ROTARY COMPRESSOR ..............................................................................................................14 3.4 HOW TO REPLACE REFRIGERATION SYSTEM...................................................................................15 4. TROUBLESHOOTING GUIDE...................................................................................................17 5. EXPLODED VIEW - INTRODUCTION ..................................................................................20 6. REPLACEMENT PARTS LIST...................................................................................................23 —2— 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 • Quiet • High efficiency • Adjustable humidistat • Automatic defrost • Automatic shut-off • Bucket-full indicator light • Easy roll casters • Removable & large capacity bucket. • Washable air filter • 2 fan speeds • Drain hose connection. 1.3 DIMENSIONS (mm/in) 445 (17 1/2) 320 (12 9/16) 340 (13 3/8) ) 3/16 530 (20 —3— 1.4 SPECIFICATIONS MODELS DH3010B DH4010B DH5010B ITEMS (DHA3012D*) (DHA4012D*) (DHA5012D*) CAPACITY (Pint/Day) 30 40 50 POWER SUPPLY (Phase, V, Hz) 1ø, 115V, 60Hz REFRIGERANT R134a R22 REFRIGERANT CHARGE, oz(g) 4.76(135) 5.11(145) 7.05(200) + 2 + 2 CONTROL, DEFROST OPEN : 32°F(0°C)– 3 OPEN : 32°F(0°C)– 3 – + 3 + 3 CLOSE : 52.6°F(13°C)– 3 CLOSE : 53.6°F(13°C)– 3 THERMOSTAT OPEN : 28.4°F(-2°C ±2) OPEN : 26.6°F(-3°C ±2) OPEN : 28.4°F(-2°C ±2) CLOSE : 55.4°F(13°C ±2) CLOSE : 55.4°F(13°C ±2) CLOSE : 55.4°F(13°C ±2) HUMIDISTAT CONTROL RANGE : 20% ~ 80% RH NORMAL SETTING : 42 ± 5% RH COMPRESSOR MODEL NO. LX86HACG QA075CH QA082CH TYPE P220MC WORKING TIME: 0.2 ~ 0.7 sec. TIME P.T.C. RETURN TIME: 60 sec. – ASSEMBLY AMPERE 7A MAXIMUM VOLTAGE 300V • OVERLOAD PROTECTOR FOR COMPRESSOR PROTECTOR • INTERNAL PROTECTOR(FUSE) FOR MOTOR CAPACITOR - 25µF, 270VAC SWITCH, ROTARY 6A/125VAC, 12A/250VAC MOTOR ASSEMBLY, SINGLE Shaded pole motor, 65W/1A↓, Thermal cutoff : 266°F/130°C SWITCH ASSEMBLY, MICRO 16A/125VAC, 8A/250VAC OUTSIDE WITHOUT BUCKET 320 x 530 x 340 (12 9/16 x 20 13/16 x 13 3/8) DIMENSIONS W x H x D, mm(in) WITH BUCKET 320 x 530 x 445 (12 9/16 x 20 13/16 x 17 1/2) NET WEIGHT, kg(lbs) 21.5(47) 17.2(38) 17.7(39) ※ NOTE : Specifications are subject to minor change without notice for further improvement. —4— 1.5 CONTROL Humidity Control • When you first use the dehumidifier, turn the humidity 5 Low High 4 6 control to 5 or 6. If you still have moisture, turn the 3 7 humidity control to a higher setting. MAX is the highest setting. 2 8 • When excess moisture and dampness odors are gone, Auto Shut-Off 1 9 adjust the control to a lower setting. Use the Fan Speed Off Max. dehumidifier as long as excess moisture is present. Humidity Control Auto Shut-Off Fan Speed • Glows when the bucket is ready to be emptied, or when • The fan control adjusts the fan speed. the bucket is removed or not replaced in the proper Set the fan control to HIGH for maximum moisture position. removal. When the humidity has been reduced and • The Water Level Control Switch shuts off the quiet operation is preferred, set the fan control to LOW. dehumidifier when the bucket is full, or when the bucket is removed or not replaced in the proper position. 1.6 HOW TO OPERATE DEHUMIDIFIER 1.6.1 HOW DOES THE DEHUMIDIFIER WORK? Fan Condenser Evaporator Moist, humid air is drawn over a cold refrigerated dehumidifying coil. Moisture in the air condenses on this Dry Humid coil and drains into a bucket (or through the bucket into a Air Out Air In hose and drain). Dry, clean air is drawn over the condenser where it is actually heated several degrees and discharged out the Motor front grille into the room. It is normal for the surrounding air to become slightly Bucket warmer as the dehumidifier operates. This warming effect further reduces the relative humidity Drain of the surrounding air. Compressor Connection Side View Figure 1 1.6.2 LOCATION FOR THE DEHUMIDIFIER Allow at least 12 inches of space on all sides of the unit for good air circulation. I The dehumidifier must be operated in an enclosed area to be most effective. Air In I Close all doors, windows and other outside openings to the room. 12" Place the dehumidifier in a location that does not restrict air flow into the rear coil or out the front grille. 12" A dehumidifier operating 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. Air Out Figure 2 —5— 1.6.3 MICRO SWITCH The micro switch assembly, which is located on the barrier of
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