~A31001C(내지) - Shop Air Purifier
Contents
1. 501 e MODEL BHD e MODEL BHD 651 6 REPLACEMENT PARTS LIST e MODEL BHD 301 LOCATION PARTAS NO DESCRIPTION REMARK 130411 BASE ASSEMBLY 3041A10042C 130900 CABINET 3090A10042A 135312 FRONT GRILLE ASSEMBLY 3531A10285D 330870 DRAIN PAN ASSEMBLY 3087A10019B 148390 TANK ASSEMBLY BUCKET 4839A10002A 149410 KNOB ASSEMBLY 4941A30019B 152302 FILTER MECH AIR 5230A20040A 162615 SENSOR ASEMBLY 6877A30013L 249950 CONTROL BOX ASSEMBLY 4995A20359J 264110 POWER CORD ASSEMBLY 6411A20001Z 266002 SWITCH ROCKER 6600FX5001G 266003 SWITCH ASSEMBLY ROTARY 6601A30001B 266011 SWITCH ASSEMBLY MICRO 6600A30003C 268712 PWB PCB ASSEMBLY DISPLAY 6871A20289B 268714 PWB PCB ASSEMBLY MAIN 6871A10142A 346811 MOTOR ASSEMBLY 4681A20040J 35211A TUBE ASSEMBLY SUCTION 5211A10464A 352113 TUBE ASSEMBLY DISCHARGE 5211A11019A 52. If you need moister air press the Humidity Control button Press the Power button to stop the unit manually 1 5 6 DRYER BHD 301 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 5 42 42 R H 3 60 2 70 1 80 Off DEAD DIAL Max Figure 6 a PRESENT SET Figure 7 Figure 8 2 CIRCUIT DIAGRAM MODEL BHD 301 ROCKER SWITCH RD LOW CN RSW OR MAIN PCB RD BK BK HI 0 BK HI MOTOR BO LOW GNYL OR COM WH BL N Tw HUMIDITY CONTROL 3 bt BUCKET FULL 9 GN YL Q BK RY COMP 4 3 Pl 05 BUCKET SW HUMIDITY SENSOR POWER TRANS THERMIST e FUSE 250V T3 15A 3854A20247B NO DESCRIPTION bam an E 1 POWER CORD ASSEMBLY 6411A20001Z 1 2 SWITC
3. CAPACITOR 35uF 270VAC 35uF 270VAC MOTOR ASSEMBLY SINGLE Shaded pole motor 72W 1 4A Thermal cutoff 266 FV 130 C Shaded pole motor Thermal aoft266 RU C SWITCH ASSEMBLY MICRO 15A 250VAC OUTSIDED MENSIONS WxHxD mm in 385X540X340 15 5 32 x 21 1 4 x 13 3 8 NET WEIGHT kg Ibs 23 1 51 20 4 45 22 2 49 NOTE Specifications are subject to minor change without notice for further improvement 1 4CONTROL TYPE 1 4 1 Mechanical type High Auto L Shut Off Sd Humidity Control Max Fan Speed Figure 2 Auto Shut Off This light glows when the bucket is full or when the bucket is removed or not placed in the proper position In these cases the Water Level Control Switch shuts off the dehumidifier When the light glows check the bucket condition 1 4 2 Electronic type e AUTO A RESTART PRESENT SET E FAN TIMER POWER 57 SS 3 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 On 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 i
4. COMPRESSOR SET 2520UCBA007 359012 FAN TURBO 5900A20007A 567502 OLP 6750U L048A 349600 MOUNT MOTOR 4960A20009B 436500 HANDLE 3650A20004A 144410 CASTER ASSEMBLY ROLLER 4441A30001B 238310 ESCUTCHEON 3831A20079C 235512 COVER ASSEMBLY DISPLAY 3551A20109A 752140 HOSE CONNECTOR 5214A20027A 550140 ISOLATOR COMP 4830A30005A 149980 SHROUD 4998A10034A 435300 REAR GRILLE 3530A10193A 24 MEMO 25 MEMO 26 Specifications and performance data subject to change without notice HEAT CONTROLLER INC 1900 WELLWORTH AVENUE JACKSON MICHIGAN 49203 THE QUALITY LEADER IN CONDITIONING AIR P No 3828A31001C
5. Close valve A 5 With the unit running open valve B and add the balance of the charge a Do not add the liquid refrigerant to the Low side b Watch the Low side gauge allow pressure to rise to 30 165 c Turn off valve B and allow pressure to drop d Repeat steps B and C until the balance of the charge is in the system 6 When satisfied the unit is operating correctly use the pinch off tool with the unit still running and clamp on to the pinch off tube Using a tube cutter cut the pinch off tube about 2 inches from the pinch off tool Use sil fos solder and solder pinch off tube closed Turn off the unit allow it to set for a while and then test the leakage of the pinch off connection NOTE REFRIGERANT R134a IS USED IN SOME MODELS CHECK THE SPECIFICATION LABEL ON THE CABINET When discharging refrigerant R134a purging instrument should be used only for R134a without mixing that of refrigerant R22 When checking the leakage of refrigerant R134a leakage test tool should be used only for R134a The pump for discharging should be high efficiency Final discharging value must be managed below 0 5 Torr Maximum water should be less than 150mg in the cycle all tubes and H E assembly system If water quantity is over 150mg it causes acid or corrosion in the cycle system and the capillary tube to be clogged by water and harmful materials Models charged with refrigerant R134a should be used dryer to preven
6. protector or PTC assembly 5 Remove the overload protector OLP or PTC assembly See Figure 29 3 3 3 COMPRESSOR 1 Discharge the refrigerant by using a refrigerant Recovery System 2 After purging the unit completely unbraze the suction and discharge tubes at the compressor connections 3 Remove the nuts and washers which fasten the compressor See Figure 30 4 Remove the compressor See Figure 30 14 Figure 8 Using Recipro Compressor model Figure 29 Using Rotary Compressor models 3 4 HOW TO REPLACE THE REFRIGERATION SYSTEM 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 Solder service valves into the pinch off tube ports leaving the valves open Solder the pinch off tubes with service valves After doing the above procedures the valve must be closed and left in place on the system for any subsequent procedures 6 Evacuate as follows 1 Connect the vacuum pump as illustrated in Figure 31A 2 Start the vacuum pump slowly open manifold valves A and
7. 1 SAFETY PRECAUTIONS e 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 e Removable amp large capacity bucket Washable air filter Two speed fan Drain hose connection Low temperature operation BHD 501 BHD 651 1 2 2 DIMENSIONS mm in 385 15 5132 340 13 3 g 540 21 1 4 Figure 1 1 3 SPECIFICATIONS MODELS BHD 301 BHD 501 BHD 651 ITEMS CAPACITY Pints 24hrs 30 50 65 POWER SUPPLY Phase V HZ 10 115V 60Hz INPUT W 480 630 830 RUNNING CURRENT A 5 9 5 7 8 4 ENERGY FACTOR L kw h 1 23 1 56 1 54 REFRIGERANT R134a R22 REFRIGERANT CHARGE oz g 5 29 150 7 23 205 8 82 250 THERMISTOR OPEN 33 8 1 0 5 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 LX86HAQG QA084CBC QA114CBD TYPE P6R8MC WORKING P T C ASSEMBLY TIME TIME 0 3 1 3sec RETURN TIME 65sec MAXIMUM AMPERE 10A VOLTAGE 200V PROTECTOR OVERLOAD PROTECTOR FOR COMPRESSOR INTERNAL PROTECTOR FUSE FOR MOTOR
8. 10 3 1 3 CABINET AND 8 10 atta e en ee w E 11 3 2 1 POWER CORD ASSEMBLY catus uec a a reins c tat ea tett 11 32 2 SENSOR ASSEMBLY aka ai cece kin e 11 3 2 3 PWB PCB ASSEMBLY 11 BAC APA IT ORR Mir EE 11 3 2 5 MICRO SWITCH ASSEMBLY ec n n n pk UM rd 11 3 2 6 COIL ASSEMBLY SOLENOID hata 0 tir 12 BOT CONTROL PANEL GO es e manas de qas LE a 12 3 28 FAN AND MOTOR A Ad ca 13 829 DRAIN PAN UC 13 3 3 REFRIGERATING CYCLE ERE ori a e ea ate 14 3 3 1 CONDENSER EVAPORATOR AND CAPILLARY aaa 14 3 3 2 OR OVERLOAD PROTECTOR OLP FOR RECIPROCATING COMPRESSOR 14 3 3 8 ROTARY COMPRESSOR 72 230 ta pon a nbn re en 14 3 4 HOW REPLACE REFRIGERATION SYSTEM tto et itl tara uode ada 15 4 TROUBLESHOOTING GUIDE tpe ae 17 5 EXPLODED VIEWS ndo ua ayu M bue dn A lara ae aa 19 6 REPLACEMENT PARTS pios taa ets a ea 22 1 PREFACE This Service Manual provides various service information including the mechanical and electrical paris 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
9. 52111 TUBE ASSEMBLY CAPILLARY 5211A30720A 354210 EVAPORATOR ASSEMBLY 5421A10009P 554030 CONDENSOR ASSEMBLY 5403A10008N 558511 DRIER ASSEMBLY 5851A30001A 554160 COMPRESSOR SET 2521C A8626 359012 FAN TURBO 5900A20007A 567502 OLP 6750C 0009E 349600 MOUNT MOTOR 4960A20009B 667482 PTC ASSEMBLY 6748C 0003D 436500 HANDLE 3650A20004A 144410 CASTER ASSEMBLY ROLLER 4441A30001B 238310 ESCUTCHEON 3831A20079G 235512 COVER ASSEMBLY DISPLAY 3551A20122A 752140 HOSE CONNECTOR 5214A20027A 550140 ISOLATOR COMP 5040AR4195A 149980 SHROUD 4998A10034A 435300 REAR GRILLE 3530A10193A 22 e MODEL BHD 501 LOCATION NO DESCRIPTION BIDEO REMARK 130411 BASE ASSEMBLY 3041A10042A 130900 CABINET 3090A10042A 135312 FRONT GRILLE ASSEMBLY 3531A10254C 330870 DRAIN PAN ASSEMBLY 3087A10019A 148390 TANK ASSEMBLY BUCKET 4839A10002A 152302 FILTER MECH AIR 5230A20040A 162615 SENSOR ASEMBLY 6877A30013L WOCZZ CAPACITOR 0CZZA20001R 249950 CONTROL BOX ASSEMBLY 4995A20359E 264110 POWER CORD ASSEMBLY 6411A20001Z 266011 SWITCH ASSEMBLY MICRO 6600A30003C 268712 PWB PCB ASSEMBLY DISPLAY 6871A20460A 268714 PWB PCB ASSEMBLY MAIN 6871A10141C 346811 MOTOR ASSEMBLY 4681A20040J 35211A TUBE ASSEMBLY SUCTION 5211A10428A 352113 TUBE ASSEMBLY DISCHARGE 5211A11016A 552204 COIL ASSEMBLY SOLE
10. B ASSEMBLY MAIN 6871A10141C 1 S 10 COIL ASSEMBLY SOLENOID 6421A20003V 1 5 x S SERVICE PARTS A ALTERNATE PARTS N NOT SERVICE PARTS 3 DISASSEMBLY INSTRUCTIONS 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 Remove 2 screws which fasten the front grille 2 Pull the front grille forward and upward See Figure 11 3 Remove 6 screws that secure the rear grille 4 Remove the rear grille See Figure 12 3 1 3 CABINET AND CONTROL BOX 1 Remove the Bucket the Air filter and Front grille according to the procedure above 2 Remove 1 screws that fasten Control box See Figure 13 3 Remove 9 screws on all sides of the cabinet 4 Lift the Cabinet from the base See Figure 13 5 Remove a screw fasten the earth wire on the inside of control box 6 Remove 1 screw that fasten control box and unhook control box from hook on the shroud See Figure 14 Figure 13 Figure 14 10 3 2 CONTROL PARTS 3 2 1 POWER CORD ASSEMBLY 1 After opening the control box remove the screw that holds the ground wire See Figure 15 2 Disconnect the remaining leads of the power cord from the PWB PCB ASSEMBLY MAIN t
11. B two full turns counterclockwise and leave the valves open The vacuum pump is now pulling through valves A and B to valve C by means of the manifold and entire system 3 4 5 m CAUTION If high vacuum equipment is used just crack valves A and B for a few minutes then open slowly with the two full turns counterclockwise This will keep oil from foaming and being drawn into the vacuum pump 3 Operate the vacuum pump for 20 to 30 minutes until 600 microns of vacuum are obtained Close valves A and B and observe vacuum gauge for a few minutes A rise in pressure would indicate a possible leak or moisture remaining in the system With valves A and B closed stop the vacuum pump 4 Remove the hose from the vacuum pump and place it on the charging cylinder See Figure 31B Open valve C Discharge the line at the manifold connection 5 The system is now ready for final charging 7 Recharge as follows 1 Refrigeration cycle systems are charged from the High side If the total charge cannot be put in the High side the balance will be put in the suction line through the access valve which you installed as the system was opened 2 Connect the charging cylinder as shown in Figure 31B With valve C open discharge the hose at the manifold connection 3 Open valve A and allow the proper charge to enter the system Valve B is still closed 4 If more charge is required the high side will not take it
12. H ROCKER 6600FX5001G 1 S 3 MOTOR ASSEMBLY 4681A20040J 1 S 4 PTC ASSEMBLY 6748C 0003D 1 S 5 RE COMPRESSOR SET 2521C A8626 1 S 6 6750C 0009E 1 S 7 PWB PCB ASSEMBLY DISPLAY 6871A20289B 1 S 8 SENSOR ASSEMBLY 6877A30013L 1 S 9 SWITCH ASSEMBLY ROTARY 6601A30001B 1 S 10 SWITCH ASSEMBLY MICRO 6600A30003C 1 S PWB PCB ASSEMBLY MAIN 6871A10142A 1 S x S SERVICE PARTS 8 A ALTERNATE PARTS N NOT SERVICE PARTS e MODEL BHD 501 BHD 651 CN S VALVE MAIN PCB REVERSING COIL BK HI MOTOR ERILOW GN YL OR COM DISPLAY P C B 00000000000000 RY S VALE BUCKET CAPACITOR RY COMP POWER 4 3 TRANS O Pro THERMISTOR FUSE 250V T3 15A 3854A20247J NO DESCRIPTION PARI NO QTY RE BHD 501 BHD 651 PER SET MARKS 1 POWER CORD ASSEMBLY 6411A20001Z 1 2 MOTOR ASSEMBLY 4681A20040J 4681A20040K 1 S 3 CAPACITOR OCZZA20001R OCZZA20005J 1 S 4 COMPRESSOR SET 2520UCAA014 2520UCBA007 1 S 5 OLP 6750U L058A 6750U L048A 1 S 6 PWB PCB ASSEMBLY DISPLAY 6871A20460A 1 S 7 SENSOR ASSEMBLY 6877A30013L 1 S 8 SWITCH ASSEMBLY MICRO 6600A30003C 1 S 9 PWB PC
13. HEAT CONTROLLER INC Dehumidifier MODELS BHD 301 BHD 5 BHD 651 CAUTION Before servicing the u 9 ead the 0 ety precautions in this manual Only for authorized service personne CONTENTS 1 PREFACE SATE IY PRECAUTIONS n let ae an Le ae 3 1 2 FEATURES AND ei ens e e a ea aes 3 IS FEATURES a a ne a ia 3 TS 2 DIMENSIONS x hama a a n kn kaa etone aji ap apa 3 TES SPECIFICATIONS S creo La ele 4 TAN ONO le Rr MM CM MED M DA Se a a 5 ded AME CHANICAL IN PE c oit besten Nune eurn Qu MD PU A UU 5 ip 2 ELECTRONIC TYPE c Pe 5 1 5 HOW TO OPERATE DEHUMIDIFIER aes ke a tame ne a Ed 6 1 5 1 HOW DOES THE DEHUMIDIFIER WORK 6 1 5 2 LOCATION FOR THE 25 6 T 5 MICRO SWI CH cd em ED D LA 6 Tp A AUTO DER MOS Susa in sa 6 155 HUMIDITY CONTROLEER LM 7 156 DRYER Uca aaa LU ate DLE oun 7 2 CIRCUIT otan e a kep 8 3 DISASSEMBLY INSTRUCTIONS SA MECHANICAE PARTS koi i Mund 10 SAN B CKETANDUAIREIETEBT o neni dei nan a teta d Dieter 10 3 1 2 FRONT CASE AND TOPCOVER A e pcd che fd
14. NOID 6421A20003V 354210 EVAPORATOR ASSEMBLY 5421A10009J 554030 CONDENSOR ASSEMBLY 5403A10008A 554160 COMPRESSOR SET 2520UCAA014 359012 FAN TURBO 5900A20007A 567502 OLP 6750U L058A 349600 MOUNT MOTOR 4960A20009B 436500 HANDLE 3650A20004A 144410 CASTER ASSEMBLY ROLLER 4441A30001B 238310 ESCUTCHEON 3831A20079C 235512 COVER ASSEMBLY DISPLAY 3551A20109A 752140 HOSE CONNECTOR 5214A20027A 550140 ISOLATOR COMP 4830A30005A 149980 SHROUD 4998A10034A 435300 REAR GRILLE 3530A10193A 23 e MODEL BHD 651 LOCATION RATTAD NO DESCRIPTION Fe REMARK 130411 BASE ASSEMBLY 3041A10042A 130900 CABINET 3090A10042A 135312 FRONT GRILLE ASSEMBLY 3531A10254C 330870 DRAIN PAN ASSEMBLY 3087A10019A 148390 TANK ASSEMBLY BUCKET 4839A10002A 152302 FILTER MECH AIR 5230A20040A 162615 SENSOR ASEMBLY 6877A30013L WOCZZ CAPACITOR OCZZA20005J 249950 CONTROL BOX ASSEMBLY 4995A20359L 264110 POWER CORD ASSEMBLY 6411A20001Z 266011 SWITCH ASSEMBLY MICRO 6600A30003C 268712 PWB PCB ASSEMBLY DISPLAY 6871A20460A 268714 PWB PCB ASSEMBLY MAIN 6871A10141C 346811 MOTOR ASSEMBLY 4681A20040K 35211A TUBE ASSEMBLY SUCTION 5211A10460A 352113 TUBE ASSEMBLY DISCHARGE 5211A20868B 552204 COIL ASSEMBLY SOLENOID 6421A20003V 354210 EVAPORATOR ASSEMBLY 5421A10009H 554030 CONDENSOR ASSEMBLY 5403A10008L 554160
15. and off according to surrounding humidity conditions 1 5 HOW TO OPERATE DEHUMIDIFIER 1 5 1 HOW DOES THE DEHUMIDIFIER WORK Motor Moist humid air is drawn over a cold refrigerated Condenser Fan 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 rear grill into the room See Figure 4 t is normal for the surrounding air to become slightly warmer as the dehumidifier operates This warming effect further reduces the relative humidity Compressor of the surrounding air A Dry Air Out Rear Grille Bucket Side View Figure 4 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 5 The dehumidifier must be operated in an enclosed area to be most effective H 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 front grille or out the rear 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 1 5 3 MICRO SWITCH The micro switch ass
16. embly 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 will not operate satisfactorily if the room temperature is below 65 F 18 C If the dehumidifier is operated in low temperature conditions frost can form in the evaporator coil and the unit will cycle ON OFF repeatedly In this case please check your room temperature conditions and stop the unit NOTE The low temperature operation feature in the BHD 501 and BHD 651 models will continuously cycle up to a temperature of 42 6 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 humidity range is from 20 to 80 See Figure 6 Turn the Humidity Control to Off to stop the unit manually 1 5 5 2 Electronic Type The humidity control can be set on or 3526 7096 RH Relative Humidity for normal operation See Figure 7 If you need drier air press the 7 Humidity Control button
17. hen remove it from the control box 3 2 2 SENSOR ASSEMBLY 1 Disconnect the sensor assembly from the PWB PCB ASSEMBLY MAIN 2 Remove the screw which fastens the humidity sensor See Figure 16 3 Remove the thermistor from the holder See Figure 16 4 Disconnect the switch wires from the micro switch assembly See Figure 16 3 2 3 PWB PCB ASSEMBLY MAIN 1 Disconnect all leads of the motor and the compressor from PWB PCB ASSEMBLY MAIN 2 Remove the screw which fastens the PWB PCB ASSEMBLY MAIN and pull it out after unhooking from 2 rectangular holes of the control box lower See Figure 17 3 2 4 CAPACITOR Except BHD 301 1 Remove the screw that fastens the capacitor See Figure 17 2 Disconnect all leads from the capacitor and then remove it from control box 3 2 5 MICRO SWITCH ASSEMBLY 1 Turn the nut counterclockwise and pull out the micro switch from the drain pan See Figure 18 41 Figure 16 Figure 17 Figure 18 3 2 6 COIL ASSEMBLY SOLENOID BHD 501 BHD 651 1 Disconnect the housing of the COIL ASSEMBLY SOLENOID from the PCB PWB ASSEMBLY MAIN 2 Remove the screw that fastens the COIL ASSEMBLY SOLENOID See Figure 19 3 Pull it out upwards 3 2 7 CONTROL PANEL 3 2 6 1 CONTROL PANEL Mechanical Type BHD 301 1 Disconnect housing and all leads of the rocker switch SWITCH ASSEMBLY ROTARY and PWB PCB ASSEMBLY DISPLAY f
18. ips when bucket removed for emptying Before removing bucket the unit should be turned off Bucket overflows Check micro switch and float 7 Compressor cycles on overload protector OLP High or low line voltage 115V 10 Check line voltage It must be between 103 5V and 126 5V volts If intermittent provide new supply Poor air circulation Move dehumidifier for free and unobstructed air flow Heat Exchange clogged with dust or dirt Clean dust or dirt on the Heat Exchange Motor If not running determine the cause Replace if required Bad PTC assembly if assembled Check PTC Repair Short circuit or ground in electrical circuit Check electrical circuit Repair Unit pressures not equalized Allow 2 or 3 minutes for pressure to equalize before starting compressor Capacitor Test the capacitor Wiring Check the terminals If loose repair or replace Refrigeration system Check the system for a restriction Stuck compressor Check compressor replace compressor Overload protector OLP 18 Check OLP if externally mounted Replace if open If the compressor temperature is high remove the OLP cool and retest EXPLODED VIEWS MODEL BHD 301 5 NAAR
19. r loose Connect wire Refer to wiring diagram for terminal identification Repair or replace loose terminal Capacitor Discharge capacitor before testing Test capacitor Replace if not within 10 of manufacturer s rating Replace if shorted open or damaged 2 Motor runs but compressor does not run Voltage 115V x 1096 It must be between 103 5V and 126 5V If not within limits call an electrician Wiring Check the wire connections If loose repair or replace the terminal If the wires are disconnected refer to wiring diagram for identification and replace the wires Check the wire connections If not according to the wiring diagram correct the connections Rotary switch Check for continuity refer to the wiring diagram for terminal identification Replace the switch if the circuit is open Defrost control The Defrost Control senses frost build up on the evaporator coil and automatically shuts off the compressor The fan continues to run drawing air across the coil and melting the frost When the coil is defrosted the compressor automatically restarts and dehumidifying resumes Capacitor Discharge capacitor before servicing Check the capacitor Replace if not within 10 of manufacturer s rating Replace if shorted open or damaged Compressor Overload protector OLP Check the compressor for open circuit or ground If open or grounded replace the compres
20. rom PWB PCB ASSEMBLY MAIN 3 1 3 2 Pull out the knob assembly 3 Remove the nut which fastens the SWITCH ASSEMBLY ROTARY 4 Remove the knob of the rotary switch by pulling it upward Pull out the rocker switch by pushing the hooks on the both sides of rocker switch Pull out the PWB PCB ASSEMBLY DISPLAY after turning over both hooks of the display cover 3 2 6 2 CONTROL PANEL Electronic BHD 501 BHD 651 1 Disconnect the housing of the PWB PCB ASSEMBLY DISPLAY from PWB PCB ASSEMBLY MAIN 3 1 3 2 Remove 6 screws that secure the PWB PCB ASSEMBLY DISPLAY to the display cover Wy 9 D lt H 1 1 q Figure 20 Figure 21 3 2 8 FAN AND MOTOR Turn the nut left and full out the Fan by hands carefully Remove 2 screws that fasten Heat Exchange Lift the H E and open the H E around 45 degree clockwise carefully See Figure 22 Unfasten 3 screws that secure the Motor and earth wire See Figure 23 Remove the Motor 3 2 9 SHROUD AND DRAIN PAN m Discharge the refrigerant by using a refrigerant Recovery System After purging the unit completely unbrace the Discharge and the Suction tube connected compressor carefully Remove 2 screws that fasten the H E Unfasten 2 screws that secure the shroud on the sides and then lift shroud from the drain pan See Figure 24 Unfa
21. s pressed the Timer indicator lights shift as follow from 2hr On Off to 4hr On Off 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 MAX is the highest setting When excess moisture and dampness odors are gone adjust the control to a lower setting Use the dehumidifier as long as excess moisture is present Fan Speed The fan control adjusts the fan speed Set the fan control to HIGH for maximum moisture removal When the humidity has been reduced and quiet operation is preferred set the fan control to LOW Bucket Full Indicator This light glows when the water bucket is full and needs to be emptied 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 Power Operation starts when this button is pressed and stops when the button is pressed again Humidity Control This button controls the humidity in the room e Press button to raise the humidity setting e Press 57 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 6 and 70 in 5 increments On setting Dehumidifier runs continuously regardless of humidity condition 35 70 setting Dehumidifier runs on
22. sor Check the compressor OLP if externally mounted Replace if open If the compressor temperature is high remove OLP cool and retest 3 Does not defrost control Defrost control is defective Check defrost control replace it 4 Insufficient dehumidification Low relative humidity Turn dehumidifier off Poor air circulation Move dehumidifier to obtain free and unobstructed air circulation H E clogged with dust and dirt Clean evaporator and or condenser assembly Air filter is dirty Motor is not operating Clean it Check Motor repair or replace it CONDITION REMEDY 5 Noisy operating Fan If cracked out of balance or partially missing replace it Loose foreign material inside the housing 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 Worn bearings of Motor Assembly Tighten them If knocking sounds continue when running or loose replace the motor If the motor hums or noise appears to be internal while running replace motor assembly 6 Water drips The bucket is not installed properly The bucket should be properly positioned on the hangers of the drain pan Connection may be loose Check connection and repair Leak in bucket Replace bucket Water dr
23. sten 2 screws that secure the drain pan to base pan See Figure 25 Pull the drain pan backward then take it up from the base See Figure 25 13 7 7 0020502 21 2024 IAAI 194 ty Figure 22 Figure 23 Figure 25 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 screws between the housing assembly and the H E See Figure 26 4 Lift the H E and open the H E around 45 degree counterclockwise carefully 5 Unbraze each of interconnecting tubes of the evaporator and condenser carefully 6 Remove the H E assembly from the orifice See Figure 27 7 Unbraze the capillary tube at the connections of the condenser and evaporator See Figure 28 8 Remove 4 screws between the condenser and evaporator See Figure 28 3 3 2 PTC OR OVERLOAD PROTECTOR OLP FOR RECIPROCATING COMPRESSOR BHD 301 1 Discharge the refrigerant by using a refrigerant Recovery System 2 After purging the unit completely unbraze the suction and discharge tubes at the compressor connections 3 Remove the screw or nut which fastens the terminal cover 4 Disconnect the lead wire from the overload
24. t water from overflowing 15 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 LOW PRESSURE SIDE CONDENSER ASSEMBLY HIGH PRESSURE SIDE COMPOUND GAUGE MANIFOLD GAUGE TUBE 2 SEE INSETS BELOW 9 1 B gt CAPILLARY 1 VACUUM CHARGING I EXTERNAL CYLINDER Figure 31A Pulling Vacuum Figure 31B Charging 16 4 TROUBLESHOOTING GUIDE CONDITION REMEDY 1 Dehumidifier does not start Both compressor and fan motor do not operate No power Check power supply at outlet Correct if none 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 disconnected o
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