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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.
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CONTENTS 1. PREFACE ........................................................................................................................... 1.1 SAFETY PRECAUTIONS 3 ................................................................................................................................................. 1.2 FEATURES 3 ............................................................................................................................................. 1.3 DIMENSIONS 3 ...........
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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
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1.4 SPECIFICATIONS MODELS DH3010B DH4010B DH5010B (DHA3012D*) (DHA4012D*) (DHA5012D*) ITEMS 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) OPEN : 32°F(0°C) – 3 – 3 – + 3 + 3 CLOSE : 52.6°F(13°C) CLOSE : 53.6°F(13°C) – 3 – 3 ±2 ±2 ±2 OPEN : 28.4°F(-2°C ) OPEN : 26.6°F(-3°C ) OPEN : 28.4°F(-2°C ) THERMOSTAT ±2 ±2 ±2 CLOSE : 55.4°F(13°C ) CLOSE : 55.4°F(13
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1.5 CONTROL Humidity Control • When you first use the dehumidifier, turn the humidity 5 Low High 6 4 control to 5 or 6. If you still have moisture, turn the 7 humidity control to a higher setting. 3 MAX is the highest setting. 2 8 • When excess moisture and dampness odors are gone, Auto 1 9 adjust the control to a lower setting. Use the Shut-Off Off Max. dehumidifier as long as excess moisture is present. Fan Speed Humidity Control Auto Shut-Off Fan Speed • Glows when the bucket is ready to be e
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1.6.3 MICRO SWITCH The micro switch assembly, which is located on the barrier 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. 1.6.4 AUTO DEFROST When frost builds up on the cooling coils, the compressor will cycle off until the frost disappears. The fan continues to run. NOTE: This unit is designed to be operated at temperatures
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2. CIRCUIT DIAGRAM • MODEL : DH3010B/DHA3012DL SWITCH, BK WH ROTARY 4 BK(HI) 1 RD(LO) GR/YL 6 GR/YL C BK(HI) N.C RD(L) N.O MOTOR OR(COM) BR BR BR BK 1 2 M 3 6 TERMINAL BLOCK S 5 4 COMP. BK BL C O.L.P. CONTROL, DEFROST WIRING DIAGRAM 3854A20015H PART NO. LOCATION Q'TY RE- DESCRIPTION PER SET MARKS DH3010B NO. 6411A20001Q POWER CORD ASSEMBLY 1 S, A 1 6600A20001A 1 S 2 SWITCH, ROTARY 4681A20040A 3 MOTOR ASSEMBLY, SINGLE 1 S 6748C-0003A P.T.C. ASSEMBLY 1 S 4 2521C-A8605 COMPRESSOR 1 S 5 6750C-0002S
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• MODEL : DH4010B/DHA4012DL, DH5010B/DHA5012DL(DEFROST CONTROL TYPE) SWITCH, BK WH ROTARY 4 BK(HI) 1 RD(LO) GR/YL 6 GR/YL C C BK N.O N.C RD MOTOR OR H BR BR BR BK RD 1 2 S RD BK R COMP. BK C BL CONTROL, O.L.P. DEFROST WIRING DIAGRAM 3854A20015G PART NO. LOCATION Q'TY RE- DESCRIPTION PER SET MARKS DH4010B DH5010B NO. 6411A20001Q 1 S, A 1 POWER CORD ASSEMBLY 6600A20001A 2 SWITCH, ROTARY 1 S MOTOR ASSEMBLY SINGLE 4681A20040A 1 S 3 CAPACITOR 0CZZA20001Q 1 S 4 COMPRESSOR (ROTARY) 2520UABC2FA 5416AR21
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• MODEL : DH4010B/DHA4012DL, DH5010B/DHA5012DL(THERMOSTAT CONTROL TYPE) BK WH SWITCH, ROTARY 4 ( ) BK HI 1 ( ) RD LOW GR/YL 6 GR/YL C BK N.O C RD MOTOR N.C OR H BR BR BR BK 12 RD RD S BK R COMP L C C BK BL THERMOSTAT O.L.P 3854A20015M WIRING DIAGRAM PART NO. LOCATION Q'TY RE- DESCRIPTION PER SET MARKS DH4010B DH5010B NO. 6411A20001Q 1 POWER CORD ASSEMBLY 1 S, A SWITCH, ROTARY 6600A20001A 1 S 2 MOTOR ASSEMBLY SINGLE 4681A20040A 1 S 3 CAPACITOR 0CZZA20001Q 1 S 4 2520UABC2FA 5416AR2179J 1 S 5 COMPR
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3. DISASSEMBLY INSTRUCTIONS 3.1 MECHANICAL PARTS 3.1.1 BUCKET AND AIR FILTER 2 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) 1 Figure 5 3.1.2 FRONT GRILLE 1. Remove 2 screws which fasten the front grille. Push 2. By pushing the both sides of front grille, pull the front grille forward and upward. (See Figure 6) Push Figure 6 3.1.3. CABINET AND CONTROL BOX 1. Remov
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3.2 CONTROL PARTS 3.2.1 ROTARY SWITCH, HUMIDISAT AND NEON LAMP 1. Unfasten screws located in the bottom side of control box (see Figure 9) and fasten capacitor clamp. (DH5010B/DH4010B) And then unfold two sides of control box. (See Figure 9) 2. Disconnect housing and all leads of rotary switch, humidistat and neon lamp. 3. Remove 4 screws which fasten the rotary switch and humidistat. DH5010B DH3010B 4. Pull the neon lamp out. DH4010B 3.2.2 CAPACITOR 1. Remove each screw that fastens capacitor
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3.2.7 FAN AND MOTOR 1. Turn the nut left and full out the Fan by hands carefully. 2. Remove 2 screws that fasten Heat Exchange. 3. Lift the H/E and open the H/E around 45 degree clockwise carefully. (See Figure 14) 4. Unfasten 3 screws that secure the Motor and earth wire. (See Figure 15) 5. Remove the Motor. Figure 14 Figure 15 3.2.8 SHROUD AND BARRIER 1. Discharge the refrigerant by using a refrigerant Recovery System. 2. After purging the unit completely, unbrace the Discharge and the Suction
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3.3 REFRIGERATING CYCLE 3.3.1 CONDENSER, EVAPORATOR AND CAPILLARY TUBE(HEAT EXCHANGE ASSEMBLY) 1. Remove the insulation on the H/E assembly 2. Pierce the pinch-off tube to discharge the TM refrigerant, using a FREON recovery system. 3. After discharging the refrigerant completely, remove 2 screws between the shroud and H/E. (See Figure 17) 4. Lift the H/E and open the H/E around 45 degree clockwise carefully. 5. Unbrace two interconnecting tubes of the Figure 17 evaporator and condenser carefull
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3.3.2 P.T.C. OR OVERLOAD PROTECTOR (O.L.P.) FOR RECIPROCATING COMPRESSOR 1. Remove the cabinet. (Refer to section 3.1.3) 2. Remove a screw or a nut which fastens the terminal cover 3. Disconnect the lead wire from the overload protector or P.T.C. assembly. 4. Remove the overload protector(O.L.P) or P.T.C. assembly. (See Figure 20) Using Recipro Compressor model Figure 20 3.3.3 ROTARY COMPRESSOR 1. Remove the cabinet. (Refer to section 3.1.3) 2. Discharge the refrigerant by using a refrigerant
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3.4 HOW TO REPLACE THE REFRIGERATION SYSTEM 1. When replacing the refrigeration cycle, be sure to 7. Recharge as follows : discharge the refrigerant system by using a 1) Refrigeration cycle systems are charged from the refrigerant recovery system. High-side. If the total charge cannot be put 2. After discharging the unit completely, remove the in the High-side, the balance will be put in the desired component, and unbrace the pinch-off suction line through the access valve which you tubes. in
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Equipment needed: Vacuum pump, charging cylinder, manifold gauge, brazing equipment. pinch-off tool capable of making a vapor-proof seal, leak detector, tubing cutter, hand tools to remove components, service valve. EVAPORATOR ASSEMBLY EVAPORATOR ASSEMBLY (LOW PRESSURE SIDE) (LOW PRESSURE SIDE) CONDENSER ASSEMBLY CONDENSER ASSEMBLY (HIGH PRESSURE SIDE) (HIGH PRESSURE SIDE) COMPOUND GAUGE COMPOUND GAUGE MANIFOLD MANIFOLD GAUGE GAUGE CAPILLARY CAPILLARY TUBE TUBE SEE INSETS BELOW SEE INSETS BELOW
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4. TROUBLESHOOTING GUIDE Problem Possible Causes Remedy Dehumidifier does not start. The dehumidifier is unplugged. Make sure the dehumidifier's plug is pushed completely into the outlet. The fuse is blown/circuit Check the house fuse/circuit breaker breaker is tripped. box and replace the fuse or reset the breaker. Water has reached its preset level. Empty the bucket and replace properly. Bucket is not in the proper Make sure the slots on both sides of position and light is on. the bucket are
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CONDITION CAUSE REMEDY 1. Dehumidifier does not start. (Both No power Check power supply at outlet. compressor and fan motor do not Correct if none. operate.) Poor plug contact at outlet. Install plug properly or replace it. Bucket is full. If Auto Shut Off lights, empty the bucket and replace properly. Humidity control is at Off position Turn the humidity control switch toward Max. Wire disconnect or loose Connect wire. Refer to wiring diagram for terminal identification. Repair or replace loos
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CONDITION CAUSE REMEDY 5. Noisy operating Fan If cracked, out of balance, or partially missing, replace it Some material plunged and rattle. Remove it. Tube hits frame. Adjust tubing routine carefully. Fan blade hits frame Check Motor Mount. If loose, tighten it. Internal compressor noise. Replace compressor. Loose set screws Tighten them. Worn bearings of Motor Assembly If knocking sounds continue when running or loose, replace the motor. If the motor hums or noise appears to be internal while
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5. EXPLODED VIEW - INTRODUCTION • MODEL: DH3010B/DHA3012DL 349600 152302 269120 266003 252160 264110 346811 249950 W6640 549990 266140 359012 135312 149410 130900 147910 148380 354211 266011 554030 35211A 667482 567502 554160 352113 552111 550140 130411 —20—
