Heat Controller BHD-301-D - Manuals

Page 2 - CONTENTS

—2— 1. PREFACE 1.1 SAFETY PRECAUTIONS ...........................................................................................................................31.2 FEATURES AND DIMENSIONS .................................................................................................................

Page 3 - Figure 1

—3— 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 ...

Page 6 - HOW TO OPERATE DEHUMIDIFIER; and BHD-651-D models will continuously cycle up to a; Figure 4

—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 se...

Page 7 - Figure 6

—7— 1.5.5 HUMIDITY CONTROLLER 1.5.5.1 Mechanical Type 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.The relative humidi...

Page 9 - WIRING DIA GRAM

—9— • MODEL : BHD-501-D/BHD-651-D Q'TY PER SET 111 111111 RE- MARKS SSS SSSSSS 12 3456789 10 DESCRIPTION POWER CORD ASSEMBLYMOTOR ASSEMBLY CAPACITORCOMPRESSOR, SETOLP.PWB(PCB) ASSEMBLY, DISPLAYSENSOR ASSEMBLYSWITCH ASSEMBLY, MICROPWB(PCB) ASSEMBLY, MAIN BHD-501-D BHD-651-D 6411A20001Z EAU32357501 0C...

Page 10 - DISASSEMBLY INSTRUCTIONS; Figure 9

3.1 MECHANICAL PARTS 3.1.1 BUCKET AND AIR FILTER 1. Turn the Humidity Control off(Mechanical type) or press the power button off. (Electronic type) 2. Disconnect the power supply.3. Remove the bucket. (See Figure 9)4. Pull out the air filter. (See Figure 10) 3.1.2 FRONT CASE AND REAR GRILLE 1. Remov...

Page 12 - Figure

—12— 3.2.6 CONTROL PANEL 3.2.6.1 CONTROL PANEL - Mechanical Type (BHD-301-D) 1. Disconnect housing and all leads of the rocker switch, SWITCH ASSEMBLY, ROTARY and PWB(PCB) ASSEMBLY, DISPLAY from PWB(PCB) ASSEMBLY, MAIN (3.1.3) 2. Pull out the knob assembly.3. Remove the nut which fastens the SWITCH ...

Page 14 - REFRIGERATING CYCLE; CAPILLARY TUBE

—14— 3.3 REFRIGERATING CYCLE 3.3.1 CONDENSER, EVAPORATOR AND CAPILLARY TUBE 1. Remove the insulation on the Heater/Evaporator (H/E) assembly 2. Pierce the pinch-off tube to discharge the refrigerant, using a refrigerant recovery system. 3. After discharging the refrigerant completely, remove 2 screw...

Page 15 - CAUTION; HOW TO REPLACE THE REFRIGERATION SYSTEM

—15— 1. When replacing a refrigeration component, be sure to discharge the refrigerant system by using a refrigerant recovery system. 2. After discharging the unit completely, remove the desired component, and unbraze the pinch-off tubes. 3. Solder service valves into the pinch-off tube ports, leavi...

Page 16 - Figure 30A-Pulling Vacuum

—16— 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. B A COMPRESSOR COMPOUND GAUGE MANIFOLD GAUGE SEE INSETS BELOW EXTERNAL VACUUM P...

Page 17 - TROUBLESHOOTING GUIDE

CONDITION 1. Dehumidifier does not start. (Both compressor and fan motor do notoperate.) 2. Motor runs but compressor does not run. 3. Does not defrost control. 4. Insufficient dehumidification CAUSE No power Poor plug contact at outlet. Bucket is full. Humidity control is at Off position Wire disco...

Page 19 - Exploded View

— — • MODEL:BHD-301-D 131400 349600 149980 165010 346811 359012 264110 148391 144410 752140 152302 436500 249950 266010 130410 235512 149410 435300 330870 266003 238310 135312 268711-1 266002 W0CZZ-2 268711-2 552111 567502 554160 550140 354210 554030 35211A 352113 5. Exploded View —19—

Page 22 - REPLACEMENT PARTS LIST

6. REPLACEMENT PARTS LIST • MODEL: BHD-301-D PARTNO BHD-301-D 130410 Base Assembly,Single 3041A10042E R 144410 Roller 4441A30001B R 149980 Shroud 4998A10034B R 266010 Switch Assembly 6600A30003C R 330870 Pan Assembly,Drain 3087A10019C R 349600 Bracket,Motor 4960A20009B R 550140 Washer,Customized 1WZ...

Page 25 - MEMO