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Hoshizaki Dishwasher JWE-24000CUA-L-25B User's Manual

1. SNOISNAWIG 3OIS3INI MNVL IQnOAVI MOVE B 9 s o ei 29 201 s 0 e ES 4 8 8 8 S g NE e e ELA o o S Y A IF 28 E T o E g S S8 o o o ESIN gi hw ln a m 77 a UEM in CIS L 3 E i 2 p 2 N 1 B2 Zu e ec 00 o co 38 5 B pe d 5 r ES S N 3 o IN e Ew N HOLIMS NOILVM3dO ALIS NO G3TIVLSNI MOVE JO IN TSIN 315 NO G3TIVLSNI AMOSS32OV 51055209 THNVd 1 ALIS NO 61 os 3ON3N333M NOLLV9O1 HOLIMS 318V L GEKO sue VINIMES Bie lt INJA 1 055390 0720 01201 13315 SS33TINVIS dOlS AON39N3W3 9 5 19 1 s o e 0 c 6 2 002 6 2 002 n m T 01 752 6279101 LoL Jrsz o T EN 5 MO 14 MOV8M amp NOLWTIVLSNI JO 3HL 1Y S3NIIM31N39 jo SNIN3dO 318vl JHL N NY Sig lt 5 655 6 37971 JO SNMYSLNSO 9 1 ev eer a 473344 SION a 30553999 1 3 7 2 I31NI Y3LYM 4 HOLMS 318VI 9 ze 3
2. 9 2 Ready Cycle Unit Inactive 10 3 Wash Cycle Rinse Cycle 10 4 Table Limit Switch 11 5 Emergency Stop Button 11 6 11 D Sequence of Operation Flow Chart 12 E Timing 13 1 Auto Fill Cycle 13 2 Wash Cycle Rinse Cycle 14 F Control Board and Operation Board 15 1 Control Board Location 15 2 Control Board Layout 16 Control Board Diagram
3. 74 Important Safety Information Throughout this manual notices appear to bring your attention to situations which could result in death serious injury or damage to the unit WARNING Indicates a hazardous situation which could result in death or serious injury NOTICE Indicates a situation which could result in damage to the unit or property IMPORTANT Indicates important information about the use and care of the unit A WARNING This product should be destined only to the use for which it has been expressly conceived Any other use should be considered improper and therefore dangerous The manufacturer cannot be held responsible for injury or damage resulting from improper incorrect and unreasonable use To reduce the risk of death electric shock serious injury or fire follow basic precautions including the following Only qualified service technicians should install service and maintain the unit Electrical connection must be hard wired and must meet national state and local electrical code requirements Failure to meet these code requirements could result in death electric shock serious injury fire or severe damage to equipment This unit requires independent power supplies for the dishwasher and for the booster tank See the nameplate for proper voltage and breaker fuse sizes Failure to use proper breakers or fuses can result in tr
4. 26 2 Error Code Log 27 3 Error Code Details 28 C Service Flow Charts 41 1 Unit Will Not Start 41 2 Dishes Not Clean 43 Inadequate Rinse 45 4 Dishwasher Will Not Start Wash Rinse Cycle 46 5 No or Inadequate Detergent Rinse Aid Supply 47 6 Wash Tank Water Boils 47 7 Wash Tank Water Not Draining 48 D Float Switch Check and Cleaning 49 1 Float Switch Check 49 2 Float Switch Cleaning 49 E Thermistor Check
5. 50 IV Removal and Replacement of Components 51 A Removal of Panels 51 B Removal and Replacement of Wash Pump Motors 51 C Removal and Replacement of Rinse Pump Motor 52 D Removal and Replacement of Gear Motor 55 E Removal and Replacement of 56 F Removal and Replacement of Crankshaft 57 Removal and Replacement of Control BOX 58 Removal and Replacement of Thermistor 58 Removal and Replacement of Control Board or Operation Board 59 1 Control Board 59 2 Operation Board 60 J Removal and Replacement of 61 Removal and Replacement of Float Switch
6. 1 1 JWE 2400CUA L 25B 1 2 JWE 2400CUA R 25B 2 B Nameplate Rating 3 C Dimensions ConnectionS 4 1 JWE 2400CUA L 25B 4 2 JWE 2400CUA R 25B 5 General Information 6 CONStruCtion 6 1 6 2 Booster Tank 7 3 Control 8 FUNCIONS oe eee eee 9 1 Increasing Rinse Water Flow Rate 9 C Sequence of Operation 9 1 Auto
7. JO 60 BOIAJOS juiodjes esuu 02 5 duiej peziBueue s s juiodjes ysem e oqe 22 485 SI AA pezibBueue ep HLM 20 0 eorAJes usew je duiej M HLM 71 pezibjeue 2 WdM U9UM 13 seu 10 s s ejo o usen y pue suedo pezi amp ieue Wd 14q SIM LM a wie eJds 351 5 Aeids saddn aul ezif1eue dM eq SdS Ye s ysem Aq ajoAD 2 sinus jun mm gt uedo SIM 1M SJeedde 7 LJJA suedo STM LM peziDjeus ep suedo S 4S1M 19 HLA S 41M 18 Aq peziBjueue ep peziBjeue AM GO juiodjes dwa esuu seuoeai 7 J8MO 10 GO 1utodjes
8. AM Go we 4 duie Jayem JO 60 e9IAJes juiodjes duiej esuu DoZ 3 Jayem peziBueue s s juiodjes dwa ysem e oqe J 4 6 S AX pezibBueue ep HLM JO Y0 eorAJes usew duiej M pezi amp 1eue pue INS 2 434 pauidxe seu 20 euin esuu y suedo ueuw peziBieue Wdy 143 0 peiddns pezifueue eziB1eue Nd JO eq 1snui 45 U91IMS esuu Aq peyuels 91010 asuly ul soe 10 i mm pezibieue Wd 1 STM 2 1 WD pue pezibBieue Wam pezibueue 194A suedo SIM LM peziDJeue ep HLM suedo S 4S1M L8 pezibieue ep HLA S 41M 1g peziDJeue ep peziBjeue AM Go we juiodjes duie Jayem ueuw
9. Booster Tank Water Level Float Switch Sticking Check and clean See ILD Float Switch Check and Cleaning Connector not properly Reconnect connected uu Control Board c Wash Tank Water Level Error A3 e f the water level in the wash tank goes below the water level sensor in READY mode during operation the supplementary fill cycle starts A3 appears in the display the AUTO FILL lamp flashes and the buzzer sounds three times only at the beginning f the wash tank water level sensor is closed after the supplementary fill cycle the alarm resets If the wash tank water level sensor is still open after the supplementary fill cycle another cycle starts If the wash tank water level sensor is closed after the second cycle the alarm resets If the wash tank water level sensor still does not close after the second cycle the buzzer sounds and the unit completely shuts down See the chart below for possible causes and remedies Operation Code Error Auto fill cycle starts Wash tank water level sensor opens in READY mode or during operation Item Possible Cause Remedy Out of position Overflow Pipe Wash Tank Water Level Set in position Heavy scale or soil Clean buildup Sensor Wash Tank Electrode Connector not properly Reconnect connected Open circuit Repair or replace Defective Replace Connector not properly Reconnect Control
10. esuu DoZ 4 duiej Jayem g ueuw 71 juiod es duiej 2 4oG S M U9UM pezifueue ep HLM JO 7O amp duiej AM pezibjeue HLM SIM LM 249 g8sc vnooorc aMP eya 4 J9 UI AM yue use H LM yue use LM 42 YSEM GSM 40jouu Jeo Aj9jes Jeje S 4S 1M JOSUSS 949 6 1M YOUMS SAB J9J S 41M 3u9 124A eor ues Sds YOUMS 14 esuu SSH 40jouu ple esuu JH 1 Je96 IN5 1 4 Jejeou 1515004 ue 1 g pueBe1 et fe dsip ul uedo SIM LM sueedde joue pezibieue pezibieue LIAA SIM LM HLM S 4S1M 19 2 HLA 50 we nueui eoi uJes euurn 2 S 41M 18 Aq peziBjeue ep peziBjeue AM pesoj
11. 330 N3dO 098019 330 330 N3dO 0985019 N3dO 098019 N3dO 095019 330 330 330 330 JejeeH JojsiuJeu Jezzng 1695 Hes 1901 ddn YMS 31615 useM Josueg o e7 U91IAS HSVM 1714 OLAY uong 44O NO 14 F Control Board and Operation Board A Hoshizaki exclusive solid state control board and operation board are employed in all Hoshizaki dishwasher units All models are pretested and factory set NOTICE The control board and operation board are fragile handle very carefully The control board and operation board contain integrated circuits which are susceptible to failure due to static discharge It is especially important to touch the metal part of the unit when handling or replacing the control board or operation board 3 Do not touch the electronic devices on the control board or operation board or the back of the control board or operation board 4 Do not attempt to repair the control board or operation board Do not short out power supply to test for voltage 1 Control Board Location The control box is located behind the front panel Follow the instructions and warnings for saf
12. After removing the jammed rack or the cause of the overload the table limit switch opens or the inverter stops sending the overload signal the alarm resets after 3 seconds and the unit is ready to resume operation If the wash start switch is closed when the alarm resets the upper spray arm wash pump starts first followed by the lower spray arm wash pump then the conveyor moves If the rinse start switch is closed when the alarm resets the rinse pump starts then the conveyor moves The heaters stay energized while the unit is off with L1 See the chart below for possible causes and remedies Operation Code Error Unit stops Inverter sends conveyor overload signal or table L 1 limit switch closes Item Possible Cause Remedy Jammed Remove obstacle Conveyor Defective not moving Repair smoothly Defective Repair or replace Gear Motor Defective Repair or replace Inverter Clean dishtable filled with racks Remove racks Table Limit Switch Stays closed with reed Repair or replace Switch defective or magnet off 37 k Conveyor Overload or Table Limit Error 2 L2 If the unit shuts down with L1 in the display and restarts in 3 seconds after the cause of the overload is removed and the inverter sends another overload signal within 3 seconds after the conveyor moves the unit completely shuts down L2 appears in the display and the buzzer sounds To reset use the ON OFF
13. 62 L Removal and Replacement of Thermostat 63 V Cleaning and Maintenance Instructions 64 A Daily Maintenance 64 B Weekly Maintenance 69 1 69 2 EXtEriOy 69 C Monthly Maintenance 69 1 Water Supply Line 69 D Descaling As Required 70 E Shutdown 70 F Long Storage Relocation Disposal Transfer 72 VI Operating InstructionS 12 VII Technical Information 73 A Water Circuit 73 B Wiring Diagram
14. Rinse Start Switch CN9 1 2 6VAC 5 6 12VDC CN10 12VDC CN11 12VDC 1 Connectors CN 1 4 are VH Connectors 17 4 Operation Panel Layout The operation panel is mounted on top of the unit wash compartment exit side and is connected to the CN5 connector on the control board Up Button Water Temperature Lamps oN WASH TEMP Wash Tank 160 F 71 C Minimum AUTO FILL Lamp Final Rinse 180 F 82 C Minimum p mem AUTO FILL NN WASH Lamp TEMP DISPLAY Down Button Display CHANGE Button ON OFF Button 5 Features a Display This operation board uses an LED display to show system details and diagnostic information b Service Menu and Error Log A service menu 01 to 19 and 21 to 25 allows for viewing and setting of system operating details and parameters See II F 7 Service Menu and Error Log c Error Codes Error codes A1 to H1 to L1 L2 b1 b2 o1 o2 are designed to protect the unit These codes give information or warnings in the event the unit is operating out of acceptable parameters See III B Error Codes 6 Controls Adjustments and Lamps a Water Temperature Lamps Light up to indicate the water temperature shown in the display b AUTO FILL Lamp Flashes during the auto fill cycle and goes off at the end of the cycle 18 c READY Lamp Lights up when the auto fill cycle completes and the dishwasher is
15. HOSHIZAKI DISHWASHER MODEL JWE 2400CUA L 25B JWE 2400CUA R 25B SERVICE MANUAL IMPORTANT Only qualified service technicians should install service and maintain the unit No service or maintenance should be undertaken until the technician has thoroughly read this Service Manual Failure to service and maintain the equipment in accordance with this manual may adversely affect safety performance component life and warranty coverage Hoshizaki provides this manual primarily to assist qualified service technicians in the maintenance and service of the unit Should the reader have any questions or concerns which have not been satisfactorily addressed please call write or send an e mail message to the Hoshizaki Technical Support Department for assistance HOSHIZAKI AMERICA INC 618 Highway 74 South Peachtree City GA 30269 Attn Hoshizaki Technical Support Department Phone 1 800 233 1940 Technical Support 770 487 2331 Fax 1 800 843 1056 770 487 3360 E mail techsupport hoshizaki com Web Site www hoshizaki com NOTE To expedite assistance all correspondence communication MUST include the following information Model Number Serial Number Complete and detailed explanation of the problem CONTENTS l Specifications 1 A Specification Sheet
16. Te M 6 00 6 00 LoL Jesz 627 101 01 7 5 5 5 ES NOLLVTIVISNI JO INIL IHL 5 lv 9 lt 5 65 2NIN3dO 319 JHL NONY ns 00 9 c1 ev SNIN3dO 318VL JO 3NI1431N39 9 15 004 0 816 deles 2 01 292 2 22 595 A723344 5 1 3 7 2 FINI Y3LYM c oz 16 7 09 82 c 15 102 1 1 SNOLLORNNOO Yad 1dW Z L L 1911710 9 51 L v 2 61 b 2 61 MOVE WSYSAINN AMOSS320V AOLIMS 318VI zs evi syuf 6 5 061 General Information A Construction 1 Dishwasher The illustration below shows JWE 2400CUA L 25B left to right rack flow Operation Panel Emergency Stop Button Wash Spray Arm stationary Service Panel i 1 i Vertically Sliding I Rinse Spray Arm stationary Rinse Start Switch Conveyor Wash Start Switch Table Limit Switch Service Panel Switch Conveyor Motor Backup Water Level Float Switch Wash Tank 26 gallons Water Level Float Switch Water Level Safety Wash Tank Thermistor Float Switch Wash Pump Wash Tank Heater Upper Lower Spray Arm Booster Tank Thermistor Booster Tank Heater Rinse Pump 2 Booster Tan
17. 17 4 Operation Panel Layout 18 5 Features 18 6 Controls Adjustments and Lamps 18 7 Service Menu and Error Log 19 8 Temperature Display 21 9 Error Codes 21 10 Buzzer 21 IMPORTANT This manual should be read carefully before the unit is serviced or maintenance operations are performed Only qualified service technicians should install service and maintain the unit Read the warnings contained in this booklet carefully as they give important information regarding safety Please retain this booklet for any further reference that may be necessary 12 Special Modes 22 Service Diagnosis 24 A Diagnostic Procedure 24 B Error COdOS eere eene ee aeneo nene i 26 1 Error Code Table
18. 440 NO Jezzng N3dO 435010 Josues 3497 430 JejeeH Jejsoog juiodies ue N3dO YOUMS 5 4 LS 9497 N3dO YOUMS 32014 qaso19 9 9 dnyoeg Q3S0719 U IIMS 4 9 9 340 340 Qqaso19 YOUMS BIIAIOS 340 NO 340 NO 340 NO 7714 OLNV 340 uogng wAAO NOu Booster Tank 13 2 Wash Cycle Rinse Cycle esuu usem eu jo uondnuejur sjueAeJd esuu usew pepuejxe y jng e YMS y suedo edeus e pueu xoeJ eu SION 7 esuu ay pue ysem eui sdois 10 8Au09 BU 9JON su uoyws neis y euin siu pepeo si Z SION YMS PEJS eui esoj siu Buunp si YILI Jeujoue SION eoiAJes Aq e qejsnfpe jjnejep fJo 9eJ 095 51 epo SION ZO nue u 91ON lt 9981 9207 098 05 usen LO SION 330 qulodjas 330 330
19. N A gt t 61x t 61 6 5 05 5 97 AIYA TVSH3AINQ re o MOTSESAO H3ISOO8 r lz ses 2 wo z 1z oss e r os iezt la z 16 1081 ui spun STOH LINANOO 1 1 SNOLID3NNOO 1 5 Y4M0d AdW Z Ll 1 Iuno 2 JWE 2400CUA R 25B 3dld 3HIVM LOH 4315008 2141931 rele 879 276218001 Tus Velez FOIS 43845 EB S SNOISN3WIG 3OISINI 3INVL InOAVI MOV e o Y at o s o et YOINSLNI INVD e zv vZ01 Sole Ain olo on ALE E ms S AFE aR Slo rem ec NES e ae E 25 t S 3 Za 28 5 pm ind o alsa SC E 5 5 3 5 E A S SJEN ZIN 1 w Eo 00 d gt E N N I y co p E HOLIMS NOLLV 3dO G3TIVISN 148055300 JOVAL MOVE JO 3NFTH3IN3O 1 TBNVd NOIIVH3dO M quvno ALIS NO TWNOUdO 9NN3 0 ONES SCOOH INA 059 311 NO G3TIVISNI 4MOSS309V 30 3834384 NOILVOO T1 HOLIMS 31891 THIS SS33NVIS o cot ov zor1 NOLIN dOIS 9 26 192 0 1 Tn
20. button to turn the unit off and then back on If the unit shuts down with a conveyor overload error the error signal from the inverter is reset and the unit restarts after 3 seconds If the cause of the overload e g dish caught in conveyor has not been removed by then the unit starts and stops repeatedly To prevent this repetition if the same error occurs within 3 seconds the unit remains shut down Ifthe unitshuts down with the table limit switch closed the unit restarts after one or more racks are removed and the table limit switch does not normally close again within 3 seconds See the chart below for possible causes and remedies Operation Error Inverter sends another conveyor overload signal Unit stops or table limit switch closes again within 3 seconds after L1 error resets and unit restarts Item Possible Cause Remedy Jammed Remove obstacle Conveyor Defective not moving Repair smoothly Defective Gear Motor Defective Inverter Improper operation Instruct operator Table Limit Switch Repair or replace Repair or replace 38 1 Booster Tank Error 61 f the booster tank error input contacts stay open for more than 2 seconds b1 appears in the display and the buzzer sounds f the booster tank error input contacts stay closed for more than 2 seconds the alarm resets Note The booster tank error input must be connected to indicate thi
21. 0 48 MPa Exhaust Requirements 200CFM Entrance End 400CFM Discharge End The rated properties are based on measurements at ambient temperature of 86 F 30 C according to the Technical Requirements for Electrical Appliances We reserve the right to make changes in specifications and design without prior to notice ACCESSORIES SUPPLIED 2 JWE 2400CUA R 25B coe nr DISHWASHER SIDE BOOSTER SIDE AC SUPPLY VOLTAGE POWER SUPPLY CAPACITY AMPERAGE STARTING AMPERAGE ELECTRICAL COMSUMPTION HEATER RACK SIZE NUMBER OF LARGE DISHES RACK CAPACITY WATER COMSUMPTION PASSING HEIGHT DIRECTION OF OPERATION OUTSIDE DIMENSIONS EXTERIOR DOOR LEG WASH SYSTEM RINSE SYSTEM PUMP DRAIN SYSTEM START DRY SYSTEM REFUSE DISPOSAL DETERGENT DISPLAY TANK CAPACITY HOT WATER SUPPLY TEMPERATURE CONTROL CONNECTION WATER SUPPLY DRAIN CONTROL BOIL DRY PROTECTION SAFETY SYSTEM WEIGHT 3 phase 3 wire 208 230V 60Hz 10 2 power supply lines 208V 18 4kVA 51 1A 208V 20 6kVA 57 2A 230V 22 1kVA 55 5A 230V 25 3kVA 63 5A Max Running 51 2A Max Running 63 3A Rated Motor 9 0A oe Max 19 86kW Max 25 20kW Rated Motor 3 06kW Power Factor 84 16 80kW 230V 19 3 4 x 19 3 4 500 x 500mm 16 plates 9 1 DIA 240 200 160racks hour adjustable in 3 steps rotary switch 114Gal hour 432L hour 0 48 Gal rack 1 8L rack at 240rack hour 20 5 520mm Right to Left W57
22. 3 x D27 6 x H58 1 W1 455 x D700 x H1 475mm Stainless Steel Vertically Sliding Service Panel Opening W25 6 x H18 9 Stainless Steel Adjustable 9 4 11 0 Upper and Lower Fixed Spray Wash 1HP x 2 Rinse 0 134HP Draw Out Overflow Pipe Overflow Drain Rack Detection Wash Rinse Residual Heat Drying Filter Collection Not Provided Wash Water Temperature Rinse Water Temperature selectable by switch Ready Auto Fill Wash Error Code 25 20kW 230V 27 2Gal 103L Automatic Hot Water Supply by Microprocessor Control Wash 160 F 71 C min Thermistor Control 163 F 73 C 168 F 76 C Inlet 3 4 FPT Outlet 1 1 2 MPT Microprocessor control Water Level Switch Bimetal Thermostat Manual Reset Bimetal Thermostat Manual Reset Thermistor Auto Reset Thermistor Auto Reset Service Panel Switch Emergency Stop by Microprocessor Control Table Limit Switch Emergency Stop Button Conveyor Overload Protector Net 43016 195kg Gross 5841 265kg 12 4Gal 47L Automatic Hot Water Supply by Water Valve Rinse 180 F 82 C min Thermistor Control 182 F 83 C 185 F 85 C Float Switch PACKAGE CERTIFICATION ACCESSORIES SUPPLIED ACCESSORIES REQUIRED OPERATION CONDITIONS Carton Crate W62 6 xD32 9 xH65 9 W1 590mm xD 835mm x 1 675mm NSF ANSI 3 ETL cETL Energy Star Universal rack 19 3 4 x 19 3 4 Instruction manual Installation manual Maintenance sheet Curta
23. Board connected Defective Replace Water level too low See 1 Auto Fill Cycle d Booster Tank Water Level Error 1 Booster Tank Water Level Float Switch Closed 01 If both the booster tank water level float switch and the booster tank backup water level float switch have remained closed for 1 minute the booster tank heaters de energize o1 appears in the display and the buzzer sounds The error resets if the booster tank backup water level float switch opens or when the ON OFF button is used to turn the unit off and then back on See the chart below for possible causes and remedies Operation Code Error Booster tank water level float switch and booster Unit stops tank backup water level switch have remained closed for 1 minute Item Possible Cause Remedy Control relay contacts Replace Water Valve fused 7T Sticking Check and clean See LD Float Switch Check and Cleaning Booster Tank Water Level Float Switch Sticking Check and clean See I D Float Switch Check and Cleaning Defective Control Board Note See 111 0 Float Switch Check and Cleaning Booster Tank Backup Water Level Float Switch Replace 32 e Booster Tank Water Level Error 2 Booster Tank Water Level Float Switch Open 02 If the booster tank water level float switch is open and the booster tank backup water level float switc
24. If replacing the booster tank thermistor disconnect the closed end connectors for the booster tank water level float switch and the booster tank backup water level float Switch 5 Remove the tape or ties securing the thermistor leads then pull out the thermistor from the wash tank or booster tank straight towards you 6 Clean out all old sealant from inside the thermistor hole 7 Route the wires from the new thermistor connector through the existing black plastic sleeve 8 Apply the recommended sealant KE4560RTV Part Code 60Y000 11 4A0683 01 to the end of the new thermistor then insert the thermistor quickly and securely 9 Use tape or ties to secure the thermistor leads in their correct position 10 Reconnect the thermistor connector and the wash tank electrode leads or the booster tank water level float switch and booster tank backup water level float switch leads then bag and tie them 11 Replace the control box and the front panel in their correct positions NOTICE eee Be careful not to damage the wiring when handling the control box Removal and Replacement of Control Board or Operation Board When replacing a control board or operation board follow the precautions below NOTICE 1 The control board and operation board are fragile handle very carefully 2 The control board and operation board contain integrated circuits which are susceptible to failure due to static discharge It is especially impor
25. clog the piping and wash pump resulting in reduction of washing performance or pump failure After closing time always clean the tank filters wash rinse spray arms and water level sensor When disassembling the spray arms check and remove any leftovers clogging the pipe joints Otherwise the leftovers may become hard to remove or spoil Read the instruction manual carefully to ensure safe and proper operation 72 VII Technical Information A Water Circuit Upper Wash Lower Wash Spray Arm Spray Arm Detergent Feeder Upper Rinse not provided Spray Anm 7 O O Q Backup Water Level Float Switch Lower Rinse m Spray Arm Rinse Aid Feeder not provided Water Level Float Switch Inlet Water Valve Gear Motor m Water Water Level Safety wap un CUM Wash Pump Float Switch ash lank heater Lower Spray Arm pray Drain Upper Spray Arm Rinse Pump Booster Tank Heater Drain Pipe Water Level Sensor e The wash water is sprayed by the two wash pumps from the upper and lower wash spray arms into the wash compartment e The rinse water is sprayed by the rinse pump from the upper and lower rinse spray arms into the wash compartment e The detergent is fed by the detergent feeder not provided by Hoshizaki through the detergent outlet not provided by Hoshizaki into the wash tank e The rinse aid is fed by the rinse aid feeder not provided by Hoshizaki into
26. closed BZ beeps the AUTO FILL lamp goes off and the READY lamp comes on If WT WLS is open BZ beeps continuously the AUTO FILL lamp goes off and A1 flashes in the display For details see III B 3 a Auto Fill Error A1 If the BT water level goes down and BT WLF S opens during the auto fill cycle WV energizes after BT auto fill delay time factory default 10 seconds For adjustment of this delay time see Booster Tank Auto Fill Delay Time service menu item 08 in II F 7 b Service Menu Chart If delay time is set shorter WV energizes de energizes frequently and BT may not supply hot water of proper temperature If SP is opened during the auto fill cycle SPS opens RPM de energizes The AUTO FILL lamp keeps flashing and the rinse cycle time keeps counting down When SPS closes again RPM energizes If WLS is closed when the ON OFF button is pressed the READY lamp comes on and the unit is ready to start Note 1 If SP is opened during the auto fill cycle RPM de energizes to stop hot water supply If SP is left open for a long time WT may not fill by the end of the auto fill cycle In this case WT WLS opens when the unit starts and the supplementary fill cycle begins 2 WTH is energized when WT WLS closes during the auto fill cycle 3 BTH is energized during the auto fill cycle if WLSF S is closed 9 4 If BT WLF S fails BT BUWLF S assumes control If BT BUWLF S remains closed for 1 minute 01 o2 err
27. factory default Power Supply Lock Function ON Ch keeps flashing even if service menu 18 is set to OFF 23 Ill Service Diagnosis A WARNING 1 This unit should be diagnosed and repaired only by qualified service personnel to reduce the risk of death electric shock serious injury or fire 2 Risk of electric shock Use extreme caution and exercise safe electrical practices 3 Moving parts e g fan blade can crush and cut Keep hands clear 4 Do not make any alterations to the unit This could cause water leak electric shock or fire 5 To help reduce the risk of electric shock do not touch switches with damp hands A Diagnostic Procedure The diagnostic procedure is a sequence check of the switches and sensors while operating the unit by using the switch open closed display mode Switch Open Closed Display Mode The switch open closed display mode indicates when the wash start switch rinse start switch wash tank water level sensor booster tank water level float switch and booster tank backup water level float switch are open or closed To enter the switch open closed display mode use the ON OFF button to turn on the unit Press and hold the up and down buttons for 3 seconds The following appears in the Load a rack to engage the wash start switch and start a cycle The display indicates whether a switch is open or closed When a switch is closed its corresponding segment is illuminated
28. for the operation board cable and the cable operation 6 Install the new operation board Note Remove the 2 0 mm dia tube A from the inside groove of the old board and attach the tube A to the new board 7 To replace reverse the above procedure Note Make sure the tubes are snug inside the joint operation B and operation panel B Stay OP Joint Operation B Cable Operation Connector Tube B Operation Board Tube A 60 J Removal and Replacement of Heater When replacing the wash tank heater or the booster tank heater remove the nuts using a 7 8 crowfoot wrench When replacing the booster tank heater move the clean dishtable above the booster tank before following the procedure below 1 Use the ON OFF button on the operation panel to turn off the unit then turn off the dishwasher and booster tank power supplies Lockout Tagout to prevent the power supplies from being turned back on inadvertently 2 Remove the front panel of the dishwasher wash tank heater Remove the front panel of the booster tank booster tank heater 3 Use the overflow pipe to drain the wash water tank wash tank heater Use the booster tank drain hose to drain the booster tank booster tank heater WARNING To avoid possible burns allow the rinse water temperature to fall below 104 40 before draining 4 Remove the tank filters and the separator wash tank heater Remove the top panel
29. of the booster tank booster tank heater 5 Disconnect the heater wiring at the closed end connectors 6 Use a 7 8 crowfoot wrench to remove the nuts from the heater 7 Remove the band from the heater inside the tank 8 Remove the heater 9 To replace reverse the above procedure Note 1 When rewiring the heater refer to the wiring diagram to prevent miswiring 2 The tightening torque for the nuts securing the heater must be no more and no less than 23 Ibf in 3 To fit the band on the heater inside the tank first slide the band from the front straight part to the back of the heater hook one end in the square hole and secure the other end with the bolt Bolt Band Heater The illustration shows the boster tank heater Nut 61 The illustration shows the boster tank heater Bolt Heater Cross section band fittin Washer Band Heater Square Hole K Removal and Replacement of Float Switch When replacing the float switch move the clean dishtable above the booster tank before following the procedure below 1 Use the ON OFF button on the operation panel to turn off the unit then turn off the dishwasher and booster tank power supplies Lockout Tagout to prevent the power supplies from being turned back on inadvertently 2 Remove the front panel of the booster tank 3 Use the boos
30. ready to wash d WASH Lamp Lights up during washing operation e Up Button Down Button A Indicates the total hours of operations in six digits by two digits each time Example 123 456 hours are indicated by gt 2 2 34 2 55 Press to stop the beep in case of error 0 Service personnel also use these buttons to change the controller settings f Display Indicates wash water temperature in wash cycle rinse water temperature in rinse cycle and error codes in case of trouble g CHANGE Button Press to change the wash water temperature shown in the display to the rinse water temperature h ON OFF Button Turns on off the power for operation i Conveyor Speed Switch Located on front panel Changes the rack conveyor speed in three levels high 240 racks hour medium 200 racks hour low 160 racks hour 7 Service Menu and Error Log The service menu 01 to 19 and 21 to 25 may be used to change settings acquire diagnostic information and to view error history a Service Menu Access Enter Service Menu Use the ON OFF button to turn off the unit Press and hold the CHANGE button then press the ON OFF button 01 should appear on the display Scroll Use the up and down arrow buttons to scroll through the service menu list settings and data View Service Menu Setting Press the CHANGE button to view the selected menu setting Change Setting Use the up and down arrow butt
31. sounds After replacing the failed component the alarm resets See the chart below for possible causes and remedies Note The auto fill cycle and the wash rinse cycle will start even after this error occurs Code Error Thermistor senses abnormal temperature H1 H2 Item Control Board Note See Thermistor Check and Removal and Replacement of Thermistor Operation Continues wash tank heater off Possible Cause Remedy Connector not properly Reconnect connected Open circuit H2 Replace Short circuit H1 Replace Defective Replace Connector not properly Reconnect connected Defective Replace 4 9 Booster Tank Thermistor Error H3 H4 e f the booster tank thermistor senses a temperature at or above 231 F 111 C 2 4kQ the thermistor leads are considered shorted and the booster tank heaters de energize H3 appears in the display and the buzzer sounds f the booster tank thermistor senses a temperature at or below 6 F 21 C 517kQ the thermistor leads are considered open and the booster tank heaters de energize H4 appears in the display and the buzzer sounds e After replacing the failed component the alarm resets See the chart below for possible causes and remedies Note The auto fill cycle and the wash rinse cycle will start even after this error occurs Operation Code Error Thermistor senses abnormal temperatur
32. storage contact an authorized Hoshizaki service company To prevent electric shock do not restart the unit by yourself 2 In case of relocation contact an authorized Hoshizaki service company Improper installation may cause water leak electric shock or fire 3 When disposing of the unit contact an authorized Hoshizaki service company Leaving the unit may violate laws or cause an unexpected accident NOTICE When selling or transferring this product tape the instruction manual and the installation manual to the exterior to provide the new owner with information on safe and proper use of the product VI Operating Instructions Before loading dishes in the rack be sure to remove any leftovers ex meat fish vegetables chopsticks toothpicks sticks straws paper products and plastics from the dishes They may clog the piping and wash pump resulting in reduction of washing performance or pump failure Install the separator and tank filters without creating a large gap at the tank overlap Do not bang the tank filters and separator to clean or drain or they may be deformed Leftovers and other foreign matter may enter the tank and clog the piping and wash pump resulting in reduction of washing performance or pump failure Insert the drain pipe overflow pipe after installing the separator The separator may rise up to create a large gap at the tank overlap Leftovers and other foreign matter may enter the tank and
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34. 3 to 28 0 68 20 56 3 to 67 1 0 145 6 to 180 6 5 Ifany problem is found replace the thermistor according to IV H Removal and Replacement of Thermistor 50 IV Removal and Replacement of Components A WARNING 1 This unit should be diagnosed and repaired only by qualified service personnel to reduce the risk of death electric shock serious injury or fire 2 Use the ON OFF button on the operation panel to turn off the unit then turn off the dishwasher and booster tank power supplies Lockout Tagout to prevent the power supplies from being turned back on inadvertently 3 When draining the booster tank wait until the water temperature falls below 104 F 40 C to avoid possible burns 4 To avoid possible burns and spills be sure to drain the wash tank and booster tank and let the components cool before servicing 5 When disassembling components that have been in contact with detergent wear rubber gloves and goggles Before starting disassembly thoroughly read the detergent safety instructions Contact with skin may cause irritation and contact with eyes may cause blindness When reassembling components be sure to use new O rings and gaskets A Removal of Panels 1 The front panel and side panels L and R are inserted inside the tank rim at the top and secured with 2 screws at the bottom Unscrew and pull down to remove Note The side panel at the booster tank side is not removable 2
35. 3 wire 208 230V 60Hz 10 2 power supply lines POWER SUPPLY CAPACITY 208V 18 4kVA 51 1A 208V 20 6kVA 57 2A 230V 22 1kVA 55 5A 230V 25 3kVA 63 5A AMPERAGE Max Running 51 2A Max Running 63 3A Rated Motor 9 0A STARTING AMPERAGE ELECTRICAL COMSUMPTION Max 19 86kW Max 25 20kW Rated Motor 3 06kW Power Factor 8496 HEATER 16 80kW 230V 25 20kW 230V RACK SIZE 19 3 4 x 19 3 4 500 x 500mm NUMBER OF LARGE DISHES RACK 16 plates 9 1 DIA CAPACITY 240 200 160racks hour adjustable in 3 steps rotary switch WATER COMSUMPTION 114Gal hour 432L hour 0 48 Gal rack 1 8L rack at 240rack hour PASSING HEIGHT 20 5 520mm DIRECTION OF OPERATION Left to Right OUTSIDE DIMENSIONS W57 3 x D27 6 x H58 1 W1 455 x D700 x H1 475mm EXTERIOR Stainless Steel DOOR Vertically Sliding Service Panel Opening W25 6 x H18 9 LEG Stainless Steel Adjustable 9 4 11 0 WASH SYSTEM RINSE SYSTEM Upper and Lower Fixed Spray PUMP Wash 1HP x 2 Rinse 0 134HP DRAIN SYSTEM Draw Out Overflow Pipe Overflow Drain START Rack Detection Wash Rinse DRY SYSTEM Residual Heat Drying REFUSE DISPOSAL Filter Collection DETERGENT Not Provided DISPLAY Wash Water Temperature Rinse Water Temperature selectable by switch Ready Auto Fill Wash Error Code TANK CAPACITY 27 2Gal 103L 12 4Gal 47L HOT WATER SUPPLY Automatic Hot Water Supply by Automatic Hot Water Supply by Microprocessor Control Water Valve TEMPERATURE CONTROL Wash 160 F 71
36. C min Rinse 180 F 82 C min Thermistor Control 163 F 73 C 168 F 76 C Thermistor Control 182 F 83 C 185 F 85 C CONNECTION WATER SUPPLY Inlet 3 A FPT DRAIN Outlet 1 1 2 MPT CONTROL Microprocessor control BOIL DRY PROTECTION Water Level Switch Float Switch Bimetal Thermostat Manual Reset Bimetal Thermostat Manual Reset Thermistor Auto Reset Thermistor Auto Reset SAFETY SYSTEM Service Panel Switch Emergency Stop by Microprocessor Control Table Limit Switch Emergency Stop Button Conveyor Overload Protector WEIGHT 4301 195kg Gross 58416 265kg Carton Crate PACKAGE W62 6 xD32 9 xH65 9 W1 590mm xD 835mm x 1 675mm CERTIFICATION NSF ANSI 3 ETL cETL Energy Star Universal rack 19 3 4 x 19 3 4 Instruction manual Installation manual Maintenance sheet Curtain L Curtain S x 2 Shaft curtain L Shaft curtain S x 2 Guard L Guard R Hook Drain Table limit Switch Upper wash spray arm Operation box assembly Cable cover Inlet water strainer amp Packing ACCESSORIES REQUIRED Universal rack addition Ventilation hoods x 2 Drain Tempering Kit Ambient Temperature 41 95 F 5 C 35 C Voltage Range Rated Voltage 10 Recommends Water Hardness 4gpg grains per gallon 68 5ppm or less OPERATION CONDITIONS Water Supply Temperature 110 167 F 43 C 75 C Recommends 140 F 60 C Water Supply Pressure Gauge Static Pressure 10 70PSIG 0 07
37. Ed scale or soil Sensor urgup Connector not properly Reconnect connected Open circuit Repair or replace 7 Open circuit Repair or replace Rinse Pump Control relay Replace defective n Improper setting Readjust Control Board Connector not properly Reconnect connected Defective V 28 Booster Tank Water Sticking with float in Check and clean See Level Float Switch ON position Float Switch Check and Cleaning Defective with internal Replace contacts in ON position 29 b Booster Tank Auto Fill Error A2 e Inthe auto fill cycle if the booster tank water level float switch does notclose within 10 minutes or 20 minutes in READY mode after the cycle starts the unit shuts down A2 appears in the display and the buzzer sounds To reset use the ON OFF button to turn the unit off and then back on See the chart below for possible causes and remedies Operation Code Error Booster tank water level float switch does not Unit stops A 2 close within 10 minutes or 20 minutes in READY mode after the auto fill cycle starts Item Possible Cause Remedy Not ready for Get it ready Booster Tank operation Water supply pressure Readjust too low nd Open circuit Repair or replace Strainer Water Valve Filter clogged uu Connector not properly Reconnect connected Open circuit Repair or replace
38. OFF button As long as the service panel switch and wash tank water level sensor are closed the wash pump motor runs and power is supplied to the detergent feeder terminals PC preventative cleaning appears in the display and the lamps are off To cancel the continuous wash mode press the ON OFF button b Low Water Temperature Lock Function To ensure the NSF specified minimum wash water temperature of 160 this unit is provided with a function to lock the washing operation until water in the wash water tank reaches 160 F even if a rack is loaded factory default OFF To activate this function set service menu item 15 to ON referring to II F 7 a Service Menu Access The minimum temperature of 160 F cannot be changed c Alert Function To keep water in the wash water tank clean this unit is provided with functions to beep and flash Ch Change in the display when wash water should be changed and to continue this alert until the wash water tank is refilled factory default OFF To activate this function set service menu items 16 17 18 and 19 referring to II F 7 a Service Menu Access 1 Set service menu item 16 to ON to activate this function factory default OFF 2 Setservice menu item 17 to the desired total operation time before alert number in display x 10 minutes factory default 12 2 hours Change this setting according to the advice of the relevant health department and customer demands 3 Set s
39. To replace reverse the above procedure B Removal and Replacement of Wash Pump Motors To remove 1 Use the ON OFF button on the operation panel to turn off the unit then turn off the dishwasher and booster tank power supplies Lockout Tagout to prevent the power supplies from being turned back on inadvertently 2 Drain the wash tank 3 Remove the front panel 4 Remove the fan motors 5 Disconnect the wash pump motor wiring at the closed end connectors 6 Remove the bands and disconnect the wash pump motors from the tank discharge outlets and suction inlets 7 Loosen the wash pump motor bracket mounting screws to remove the wash pump motors together with the brackets 8 Remove the pump plugs and the brackets from the wash pump motors To replace Note Be sure to use new O rings and gaskets 1 Attach the brackets and the pump plugs to the wash pump motors 2 Fit the O rings to the wash pump motor discharge outlets and suction inlets 3 Hook the brackets on the mounting screws left on the unit 51 4 Make sure the O rings are in place and attach the wash pump motors to the tank discharge outlets and suction inlets Secure the connections with the bands 5 Tighten the bracket mounting screws 6 Fill the tank with water then check for water leaks from the joints If there is a water leak check the connections and retighten the bands If there are no water leaks drain the tank 7 Connect the wiring When
40. ad by the wash tank or booster tank thermistor Indicates water temperature selected by the water temperature lamps beside the display The factory default setting is to indicate wash water temperature and rinse water temperature alternately every 5 seconds To adjustthe display change cycle time orto fix the temperature display for either wash or rinse water temperature and indicate the other temperature while the CHANGE button is pressed see service menu items 09 12 and 14 in II F 7 b Service Menu Chart The temperature display range is 32 F to 199 F 0 C to 99 To change the display scale see Temperature Display Scale service menu item 13 in II F 7 b Service Menu Chart The temperature display updates every 5 seconds for the wash tank and the booster tank 9 Error Codes In the event of operation outside of normal parameters the control board identifies the issue with an error code and beeps If more than one error occurs the display cycles through the relevant error codes For service corrections see III B Error Codes AT Wash Tank Auto Fill Error O A2 Booster Tank Auto Fill Error Wash Tank Water Level Error Booster Tank Water Level Error 1 Booster Tank Water Level Float Switch Closed Booster Tank Water Level Error 2 Booster Tank Water Level Float Switch Open Wash Tank Thermistor Error short Wash Tank Thermistor Error open Booster Tank Thermistor Error short Booster T
41. and exit of the wash compartment Fit front first Curtain Rod shorter Fit in rear notch 68 paa 23 Close the service panel WARNING To prevent entrance of dust or insects and injuries by a sudden drop do not leave the service panel open B Weekly Maintenance 1 Heater WARNING To prevent burns wait for 10 minutes after draining the unit to clean the interior Soft Brush Remove any scraps from the heater and use Donotuse ametal a soft brush to wash off residue brush which may j damage the surface Heater 2 Exterior 1 Wipe the exterior with a soft cloth 2 Use a damp cloth containing a neutral cleaner to wipe off dirt Then wipe away the residue with a clean cloth C Monthly Inspection 1 Water Supply Line Check the water supply line for damage deformation or water leak marks stains If any of these conditions are found contact an authorized Hoshizaki service company Recommendation of safety inspection by service personnel Even if there is no problem with its use a product out of warranty may have a risk of electric shock fire or water leak due to insulation degradation or aging of the electrical parts Ask an authorized Hoshizaki service company for the following inspections charged e Dust and dirt build up or water leak inside the unit e Aging conditions of the unit and its components e Scale silica lime or
42. and press the ON OFF button on the operation panel Note The unit is inoperative without ESB connected at the time of installation 6 Drain This unit does not have a drain valve The overflow pipe in WT drains excess water from WT To completely drain WT remove the overflow pipe To drain BT use the ON OFF button on the operation panel to turn off the unit then turn off the dishwasher and booster tank power supplies Lockout Tagout to prevent the power supplies from being turned back on inadvertently Use BT drain hose to drain BT WARNING To avoid possible burns allow BT water temperature to fall below 104 F 40 C before draining Legend BT booster tank BTH booster tank heater BUWLF S backup water level float switch BZ buzzer CB control board DFT detergent feeder terminals detergent feeder not provided by Hoshizaki DS door switch ESB emergency stop button RFT rinse aid feeder terminals rinse aid feeder not provided by Hoshizaki RPM rinse pump motor SP service panel SPS service panel switch WLSF level safety float switch TLS table limit switch WLF S water level float switch WLS water level sensor WPM wash pump motor WT wash tank WTH wash tank heater WV inlet water valve 11 D Sequence of Operation Flow Chart peziBJeue HLM ueuM pezibJeue LJJA suedo SIM LM peziDueue ep HLM suedo S 4S71M 18 pezibieue ep HLA S 41M 19
43. ank Thermistor Error open H5 ROM RAM Error H6 EEPROM Error Conveyor Overload or Table Limit Error 1 Conveyor Overload or Table Limit Error 2 bi Booster Tank Error b2 Booster Tank Water Level Safety Error 10 Buzzer At the end of an auto fill cycle or other mode operation the buzzer turns on for 0 1 second and off for 0 1 second 10 times In case of an error the buzzer turns on for 0 1 second and off for 0 9 second repeatedly until the error is reset To turn off the beep press the down button When a button is pressed the buzzer turns on for 0 1 second To adjust the buzzer volume use the volume control on the control board 21 11 Operation Time Display To indicate the total hours of operation in the display press the up button on the operation panel The number appears from the hundred thousands place by two digits each for 1 second The maximum number is 999 999 hours and the display does not change for the higher numbers Example 19 302 hours are indicated as 12 Special Modes 6689 ele BB a Continuous Wash Mode The continuous wash mode also used when descaling allows the wash pump motor to run continuously In this mode the wash tank heaters and booster tank heaters remain de energized To enter the continuous wash mode use the ON OFF button to turn off the unit Press and hold the up and down buttons and the CHANGE button for 3 seconds and press the ON
44. ce it in its correct position Be careful not to confuse the positions and directions of the booster tank water level float switch and the booster tank backup water level float switch Make sure the floats can move freely in the vertical directions see 2 Booster Tank 6 Replace the booster tank panels 49 E Thermistor Check If the error code H1 H2 H4 or an abnormal temperature above 231 F 111 C or below 6 F 21 C appears in the display or the wash tank water boils check the thermistor s according to the procedure below If replacement is required see IV H Removal and Replacement of Thermistor 1 Use the ON OFF button on the operation panel to turn off the unit then turn off the dishwasher and booster tank power supplies Lockout Tagoutto prevent power supplies from being turned back on inadvertently 2 Remove the front panel then pull out the control box 3 Remove the control box cover then disconnect the CN7 connector from the control board see II F 2 Control Board Layout 4 To check the wash tank thermistor check the resistance across the white wires 1 and 2 To check the booster tank thermistor check the resistance across the pink wires 3 and 4 See the table below for proper resistance and temperature relations Temperature F C Resistance kO 4 30 to 4 62 5 87 to 6 38 158 70 8 13 to 8 96 11 5 to 12 8 104 40 24
45. control box 1 Use the ON OFF button on the operation panel to turn off the unit then turn off the dishwasher and booster tank power supplies Lockout Tagout to prevent the power supplies from being turned back on inadvertently 2 Remove the front panel 3 Slide out the control box 4 Remove the control box cover For component locations see Control Box Control Box 5 To remove the conveyor speed switch turn the lever behind the volume in the direction of the arrow remove the switch body remove the nut behind the volume and pull out the volume 6 To replace reverse the above procedure H Removal and Replacement of Thermistor NOTICE 1 The thermistors are fragile handle very carefully 2 Always use the recommended sealant high thermal conductive type Model KE4560RTV manufactured by SHINETSU SILICONE Part Code 60Y000 1 1 or Part Code 4A0683 01 or equivalent 3 Do not shorten or cut the thermistor leads 1 Use the ON OFF button on the operation panel to turn off the unit then turn off the dishwasher and booster tank power supplies Lockout Tagout to prevent the power supplies from being turned back on inadvertently 58 2 Remove the front panel 3 Slide out the control box 4 Remove the plastic bag covering the thermistor connector then disconnectthe thermistor connector If replacing the wash tank thermistor disconnect the leads from the wash tank electrode
46. e Booster Tank Water Level Error 2 Booster Whole unit Use ON OFF button to turn the unit Tank Water Level Float Switch Open stops off and then back on Booster tank water level float switch is open and booster tank backup water level float switch has remained closed for 1 minute Wash Tank Thermistor Error short Normal After replacing failed component Wash tank alarm resets Thermistor senses abnormal temperature heaters off at or above 231 F 110 Wash Tank Thermistor Error open Normal After replacing failed component Wash tank alarm resets Thermistor senses abnormal temperature heaters off at or below 6 F 21 C Booster Tank Thermistor Error short Normal After replacing failed component Booster tank alarm resets Thermistor senses abnormal temperature heaters off at or above 231 F 110 C 26 Normal After replacing failed component Booster tank alarm resets Thermistor senses abnormal temperature heaters off at or below 6 F 21 C ROM RAM Error Whole unit After replacing control board alarm stops resets Control board ROM RAM fails EEPROM Error Whole unit After replacing control board alarm stops resets EEPROM fails Conveyor Overload or Table Limit Error 1 Unit stops After error signal stops alarm resets Inverter sends conveyor overload signal or table limit switch closes Whole unit Use ON OFF button to turn the unit stops off and th
47. e Continues booster H3 H4 tank heater off Item Possible Cause Remedy Connector not properly Reconnect Thermistor connected Open circuit H4 Replace Short circuit H3 Replace Defective Connector not properly Control Board connected Defective Replace Reconnect Replace Note See Thermistor Check and Removal and Replacement of Thermistor h ROM RAM Error H5 If a ROM RAM error is detected the unit shuts down H5 appears in the display and the buzzer sounds After replacing the failed component the alarm resets See the chart below for possible causes and remedies Operation Code Error ROM RAM on control board fails Unit stops Item Possible Cause Remedy Control Board i EEPROM Error H6 If an EEPROM error is detected the unit shuts down H6 appears in the display and the buzzer sounds e After replacing the failed component the alarm resets See the chart below for possible causes and remedies Operation Code Error EEPROM on control board fails Unit stops Item Possible Cause Remedy Defective Replace Control Board Note See IV I Removal and Replacement of Control Board or Operation Board 36 j Conveyor Overload or Table Limit Error 1 L1 If the inverter sends an overload signal or the table limit switch closes the unit shuts down L1 appears in the display and the buzzer sounds
48. e and efficient operation of the unit 2 E SC f A B iM V nn Control Box 15 2 Control Board Layout Inputs and outputs are laid out on the control board as illustrated below Signal Input XA Connector 6P Buzzer Output XA Connector 2P Signal Input XA Connector 10P Wi u Thermistor Signal Input XA Connector 4P Power Input VH Connector 6P Buzzer Volume D2 se Output VH Connector 7P Output VH Connector 5P Operation Board XA Connector 5 XH Connector 3P not in use XH Connector 2P not in use Booster Tank Water Level Safety Signal Input XA Connector 3P 16 3 Control Board Diagram 4 200VAC from Transformer m Transformer 11V ZIN ______ Communication Operation Panel Board Shielded Wire Booster Tank Heater Wash Tank Heater Rinse Pump Upper Wash Pump Water Valve Lower Wash Pump o Booster Tank Water Level Safetv Float Switch Conveyor Wash Tank Electrode Water Level Sensor Table Limit Switch Conveyor Overload OO Booster Tank Water Level Float Switch Connector Voltages 3 Booster Tank Backup Water Level Float Switch CN2 200VAC OO CN3 12VDC CN4 12VDC _____ ___ __ _ __ ____ CN5 5VDC Wash Start Switch CN7 5VDC CN8 12VDC
49. e to fill the wash tank the wash tank water level sensor closes and segment E in the display comes on In normal operation the booster tank backup water level float switch does not close and segment A in the display stays off If the booster tank water level float switch fails or the booster tank water level reaches the overflow level segment A comes on 7 Wash Cycle Rinse Cycle a When a rack is loaded from the wash compartment entrance and the wash start switch closes segment B in the display comes on and the wash pump starts the wash cycle for a preset time When the conveyor moves the rack forward and the wash start switch opens segment B goes off and the wash pump stops after the preset time Segment E in the display stays on If the booster tank is below the predetermined water level segment C in the display stays off The inlet water valve stays open until segment C comes on When the wash cycle ends and the rinse start switch closes segment D in the display comes on and the rinse pump starts the rinse cycle for a preset time When the rinse start switch opens segment D goes off and the rinse pump stops after the preset time When the rinse cycle starts the booster tank water level goes down and segment C in the display goes off The inlet water valve stays open until segment C comes on Diagnosis If any problem is found by the above sequence check refer to Error Codes Service Flow C
50. ective Replace Insufficient water Readjust Rinse Water Level supply C Service Flow Charts 1 Unit Will Not Start Unit will not start Problem Possible Cause Remedy Off blown fuse or Turn on replace or tripped or defective check and reset Call Main Power Supply circuit breaker electrician if breaker trips repeatedly Loose connection Tighten Not within Refer to nameplate specifications and correct Pressed Turn clockwise to reset OFF position Move to ON position Emergency Stop Button ON OFF Button Wait for recovery Power Failure Water failure Wait for recovery No Water Supply Shut off valve closed Open Strainer clogged Clean Open Close Service Panel Out of adjustment Adjust and or replace Service Panel Switch and or open Continue 41 Continue Open coil winding Replace Transformer LL Loose connections or Check continuity and Wiring to Control Board open repair or replace In alarm See Error Control Board Codes Replace Defective 42 2 Dishes Not Clean Dishes not clean Problem Low Wash Pump Output Wash Spray Arms Filter Dish Rack Dishes Continue qp t Possible Cause Clogged with foreign matter Voltage drop Vapor lock due to clogged tank filter Vapor lock due to use of neutral cleaner Wash pump defective Clogged Out of p
51. em YOUMG 5 LLX J0j26ju02 JOUOD Wd 9SUIH 0LX Aejoy B Functions Upper Rinse Spray Arm 1 Increasing Rinse Water Flow Rate The rinse water flow rate is factory adjusted to 1 90 gal min Deans 7 2 L min To increase the flow rate to 3 17 gal min 12 L min follow the steps below Hot water supply of at least Rinse 3 44 gal min 13 L min and 113 F 45 will be required spray Arm 1 Remove the upper and lower rinse spray arms 8 2 Loosen the clean pipe nut and remove the clean pipe Spacer 3 Remove the spacer with 4 5 mm DIA hole from the nut at the unit side 4 Replace the clean pipe and the upper and lower rinse spray arms in their correct positions Nut C Sequence of Operation The steps in the sequence are as outlined below 1 Auto Fill Cycle AUTO FILL lamp flashing and RINSE TEMP or WASH TEMP lamp on If BT WLF S is open when the ON OFF button is pressed WV energizes after BT auto fill delay time factory default 10 seconds When BT WLF S closes WV de energizes the AUTO FILL lamp flashes and the auto fill cycle starts RPM energizes for length of time set by the auto fill cycle rinse time setting factory default 13 minutes For details see Auto Fill Cycle Rinse Time service menu item 03 in II F 7 b Service Menu Chart At the end of the auto fill cycle there is a 5 second dwell time CB checks WT WLS If WT WLS is
52. ementary fill cycle A3 appears in the display and the AUTO FILL lamp flashes BZ beeps three times only at the beginning If WT WLS is still open after the supplementary fill cycle another cycle starts If WT WLS still does not close A3 appears in the display BZ beeps and the unit shuts down For adjustment of the supplementary fill cycle time see Supplementary Fill Cycle Time service menu item 07 in II F 7 b Service Menu Chart For details see III B 3 c Wash Tank Water Level Error A3 2 If WT WLS and the wash start switch are closed after RPM runs for the supplementary fill cycle time WPM energizes and the conveyor starts 3 If SP is opened and closed during operation and the wash rinse start switch is open the unit does not resume operation Load another rack to close the wash start switch The unit resumes operation if SP is closed during the extended wash rinse cycle time 4 Table Limit Switch If a rack reaches the end of the clean dishtable and actuates TLS lever TLS closed WPM and RPM de energize the conveyor stops and L1 appears in the display When the rack is removed and TLS lever returns to the original position TLS open WPM and RPM energize and the conveyor starts after 3 seconds unless the wash rinse start switch is open 5 Emergency Stop Button To shut down the unit in case of emergency press ESB on top of the unit wash compartment exit side To resume operation turn ESB clockwise to unlock
53. en back on Whole unit Use ON OFF button to turn the unit stops off and then back on Booster tank water level safety float switch opens after booster tank water level float switch closes 2 Error Code Log Use the ON OFF button to turn off the unit Press and hold the CHANGE button then press the ON OFF button 01 should appear on the display Use the down arrow button to scroll to service menu items 21 through 25 21 is the most recent error Press the CHANGE button to view the selected service menu item Press the CHANGE button once again to return to the main service menu list If no errors exist in the log is displayed Press the ON OFF button to exit the service menu The display goes blank To erase the log press and hold the up and down buttons for 3 seconds with one of the error codes displayed The unit beeps once and the entire log clears 27 3 Error Code Details a Auto Fill Error A1 If the water level sensor in the wash tank is not closed at the end of the auto fill cycle the unit shuts down A1 appears in the display and the buzzer sounds To reset use the ON OFF button to turn the unit off and then back on See the chart below for possible causes and remedies Operation Code Error Wash tank water level sensor is open at the end Unit stops A 1 of the auto fill cycle Item Possible Cause Remedy Out of position Set in position Overflow Pipe Wash Tank Water Level
54. ervice menu item 18 to either OFF Ch goes off after 10 minutes ON Ch keeps flashing factory default OFF Even if set to ON Ch goes off when the ON OFF button on the operation panel is switched off 22 4 Set service menu item 19 to ON to stop the beep when the ON OFF button is switched off but to resume flashing Ch when the ON OFF button is switched back on unless the wash water tank is refilled factory default OFF Press the emergency stop button or turn off the external power supply to stop both the beep and Ch indication Set service menu item 19 to OFF to stop both the beep and Ch indication once the ON OFF button is switched off If service menu item 19 is set to ON Ch keeps flashing even if service menu item 18 is set to OFF Alert Function Setting Flow Service Menu 16 Set service menus 17 to 19 Total Operation Time Before Alert Service Menu 17 Alert starts after number in display 1 to 99 x 10 minutes factory default 12 2 hours Service Menu 18 Ch keeps flashing until DN OFF button is switched off Service Menu 19 Switching off ON OFF button cancels beep but not Ch until wash water tank is refilled OFF Alert function OFF Wash Tank Refill Alert factory default ON 1 to 99 Ch goes off after 10 minutes Display Hold Function factory default ON OFF Beep stops and Ch goes off when ON OFF button is switched off
55. finished cover the connections with the original plastic sheet cover and secure with a nylon tie Make sure the connections are situated so that water and condensation cannot reach the connections Note Be careful not to mix up the wire colors Miswiring will cause reversal of the pump motor resulting in improper operation 8 Replace the front panel 9 Make a trial run and check for water leaks Fan Motor Bracket Pump Plug Wash Pump Motor Wash Pump Motor Lower Spray Arm Fan Motor Upper Spray Arm C Removal and Replacement of Rinse Pump Motor 1 Use the ON OFF button on the operation panel to turn off the unit then turn off the dishwasher and booster tank power supplies Lockout Tagout to prevent the power supplies from being turned back on inadvertently 2 Remove the front panel 3 Use the booster tank drain hose to drain the booster tank WARNING To avoid possible burns allow the rinse water temperature to fall below 104 F 40 before draining 4 The rinse pump motor is located at the rear right side of the machine compartment JWE 2400CUA L 25B or located behind the control box and at the rear left side of the machine compartment JWE 2400CUA R 25B 5 Remove the fan motor in front of the rinse pump motor 52 6 Disconnect the rinse pump motor wiring at the closed end connectors 7 Remove the nut from the flexible tube at the rinse pump motor discharge outlet and the bolts securin
56. g the bracket to the unit base 8 Remove the band from the pipe joint of the booster tank discharge pipe behind the rinse pump motor and the flexible tube at the rinse pump motor suction inlet Pull the end of flexible tube out of the booster tank discharge pipe Note Use a hand mirror for easy removal 9 Remove the rinse pump motor together with the bracket Remove the band from the pipe joint of the rinse pump motor suction inlet pipe and flexible tube to release the flexible tube 10 Unscrew the bracket and remove the rinse pump motor 11 To replace reverse the above procedure Note 1 Be careful not to mix up the wire colors Miswiring will cause reversal of the pump motor resulting in improper operation 2 Cover the connections with the original plastic sheet cover and secure with a nylon tie Make sure the connections are situated so that water and condensation cannot reach the connections 3 Be sure to use new O rings and gaskets Be careful of the direction of the U packing for the suction inlet pipe 12 Make a trial run and check for water leaks Rinse Pump Motor JWE 2400CUA L 25B For JWE 2400CUA R 25B fan motor and rinse pump motor are located behind control box U Packi Sunction Inlet Pipe Facking p Discharge s Outlet Nut Flexible Tube i e po 8 F E 8 999 33 5 98 99 Booster Tank 4 Dra
57. g the crank to release the crank from the shaft Note Do not disassemble the housing oil seals and bearing 2 3 4 5 To replace 1 Fit the housing up on the housing and put the sleeve bearing and the crankshaft into the housing 2 Fit the sleeve bearing stopper flinger and coupling from the bottom of the crankshaft Secure the 2 hexagon socket set screws for the stopper with their ends in the crankshaft groove Secure the 4 hexagon socket set screws for the coupling to connect the crankshaft and the gear motor Note Apply a thread sealant to the hexagon socket set screws and tighten them securely 3 Fit the housing cover crank arm and keys then secure them with the hexagon head bolt 4 Replace the conveyor 5 Make a trial and check for water Head leaks Bob Note 1 When replacing the bearing and shaft apply plastics grease to the mating surfaces 2 Be careful not to damage or pinch the oil seal lips Key Short Crank Arm Housing Cover Crankshaft Key Long Bracket Wash Tank Sleeve Bearing Housing Up Oil Seal Bearing Oil Seal e quiessesip jou oq Housing Sleeve Bearing Stopper Hex Socket Set Screw 57 G Removal and Replacement of Control Box WARNING Do not touch the live parts during a trial run or servicing operations NOTICE Be careful not to damage the wiring when handling the
58. h has remained closed for 1 minute the booster tank heaters de energize o2 appears in the display and the buzzer sounds The error resets if the booster tank backup water level float switch opens or when the ON OFF button is used to turn the unit off and then back on See the chart below for possible causes and remedies Operation Code Error Booster tank water level float switch is open and Unit stops 2 booster tank backup water level switch has remained closed for 1 minute Item Possible Cause Remedy Sticking Check and clean See Float Switch Check and Cleaning ubi Sticking Check and clean See 1 0 Float Switch Check and Cleaning Connector not properly connected Note See 111 0 Float Switch Check and Cleaning Booster Tank Water Level Float Switch Booster Tank Backup Water Level Float Switch Replace Reconnect Control Board Replace 33 f Wash Tank Thermistor Error H1 H2 f the wash tank thermistor senses a temperature at or above 231 F 111 C 2 4kO the thermistor leads are considered shorted and the wash tank heaters de energize H1 appears in the display and the buzzer sounds f the wash tank thermistor senses a temperature at or below 6 F 21 C 517kQ the thermistor leads are considered open and the wash tank heaters de energize H2 appears in the display and the buzzer
59. harts Float Switch Check and Cleaning and Thermistor Check 25 B Error Codes In the event of operation outside of normal parameters the control board identifies the issue with an error code For further service information see III C Service Flow Charts 1 Error Code Table Error Wash Tank Auto Fill Error Whole unit Use ON OFF button to turn the unit stops off and then back on Water level in wash tank does not reach water level sensor after rinse pump has run for preset time Booster Tank Auto Fill Error Whole unit Use ON OFF button to turn the unit stops off and then back on In auto fill cycle booster tank water level float switch does not close within 10 minutes or 20 minutes in READY mode after inlet water valve is opened Wash Tank Water Level Error Supplementary After supplementary fill cycle ends fill cycle starts alarm resets Water level in wash tank goes below water Whole unit If whole unit stops use ON OFF level sensor in READY mode or during stops if water button to turn the unit off and then operation level sensor back on does not close after two cycles Booster Tank Water Level Error 1 Booster Whole unit Use ON OFF button to turn the unit Tank Water Level Float Switch Closed stops off and then back on Both booster tank water level float switch and booster tank backup water level float switch have remained closed for 1 minut
60. in Hose SSSSSSSSSSSSSS NS SSSSSSSSSSSS e e m Tc Rinse Pump Motor i Fan Motor 53 JWE 2400CUA L 25B View without rinse pump motor nk Booster Tank Discharge Pipe EN 7 A 4 S gt N Rinse Pump Motor Suction Inlet Flexible Tube Band f Booster Tank Discharge Pipe Rinse Pump Motor Suction Inlet 9 P Flexible Tube 54 D Removal and Replacement of Gear Motor 1 Use the ON OFF button on the operation panel to turn off the unit then turn off the dishwasher and booster tank power supplies Lockout Tagout to prevent the power supplies from being turned back on inadvertently 2 Remove the front panel 3 The gear motor is located behind the control box and at the rear left side of the machine compartment JWE 2400CUA L 25B or located at the rear right side of the machine compartment JWE 2400CUA R 25B 4 Disconnect the gear motor wiring at the closed end connectors 5 Remove the bolts securing the bracket to the unit base and the nuts securing the bracket to the wash tank 6 Loosen the 2 hexagon socket set screws for the coupling 7 Slide up the coupling and remove the gear motor together with the bracket 8 Remove the gear motor from the bracket 9 To replace reverse the above procedure Note 1 Fit the coupling securely on the gear motor shaft 2 Apply a thread sealant to the hexagon s
61. in L Curtain S x 2 Shaft curtain L Shaft curtain S x 2 Guard L Guard R Hook Drain Table limit Switch Upper wash spray arm Operation box assembly Cable cover Inlet water strainer amp Packing Universal rack addition Ventilation hoods x 2 Drain Tempering Kit Ambient Temperature 41 95 F 5 C 35 C Voltage Range Rated Voltage 10 Recommends Water Hardness 4gpg grains per gallon 68 5ppm or less Water Supply Temperature 110 167 F 43 C 75 C Recommends 140 F 60 C Water Supply Pressure Gauge Static Pressure 10 70PSIG 0 07 0 48 MPa Exhaust Requirements 200CFM Entrance End 400CFM Discharge End The rated properties are based on measurements at ambient temperature of 86 F 30 C according to the Technical Requirements for Electrical Appliances We reserve the right to make changes in specifications and design without prior to notice B Nameplate Rating HOSHIZAKI DISHWASHER AC SUPPLY VOLTAGE 208 230V 60Hz 3PH RINSE HEATER AC230V 2 8kW x 9 HOSHIZAKI ELECTRIC LTD MADE IN SHIMANE JAPAN For certification marks see the nameplate on the dishwasher We reserve the right to make changes in specifications and design without prior notice 1015 Connect Imensions 1 JWE 2400CUA L 25B C D 4315008 214193913 HOLMS IOMINOO 43345 6 lt 8001 8 1 9 6 12 675
62. in the display See the illustration below To resume the normal display press the down button Booster Tank Backup Water Level Float Switch Wash Start Switch C Booster Tank Water Level Float Switch i D Rinse Start Switch E Wash Tank Water Level Sensor 24 It is recommended to conduct this sequence check in the auto fill cycle after draining the wash tank and booster tank See Sequence of Operation for further details 1 2 3 4 5 6 a b Use the ON OFF button on the operation panel to turn off the unit Pull out the overflow pipe to drain the wash tank Drain the booster tank through the drain hose Replace the overflow pipe and drain hose in their correct positions Enter the switch open closed display mode according to the above procedure Auto Fill Cycle After the service panel is closed and the ON OFF button is pressed the inlet water valve in the booster tank opens in 10 seconds to start water supply After a while the booster tank water level float switch closes segment C in the display comes on and the inlet water valve closes to stop water supply The rinse pump starts to feed water to the wash tank When the booster tank water level goes down the water level float switch opens segment C in the display goes off and the inlet water valve opens to start water supply After the rinse pump is energized for a preset tim
63. ipped breakers blown fuses or damage to existing wiring This could lead to heat generation or fire THIS UNIT MUST BE GROUNDED Failure to properly ground this unit could result in death or serious injury Use the ON OFF button on the operation panel to turn off the unit then turn off the dishwasher and booster tank power supplies before servicing Lockout Tagout to prevent the power supplies from being turned back on inadvertently Do not make any alterations to the unit Alterations could result in electric shock injury fire or damage to the unit To avoid possible burns and spills be sure to drain the wash tank and internal booster tank and let the components cool before servicing When draining the internal booster tank wait until the water temperature falls below 104 F 40 When disassembling components that have been in contact with detergent wear rubber gloves and goggles Before starting disassembly thoroughly read the detergent safety instructions Contact with skin may cause irritation and contact with eyes may cause blindness When using an acidic descaling cleaner wear rubber gloves and goggles Contact with skin may cause irritation and contact with eyes may cause blindness Do not use or mix with a dishwashing detergent Some detergents may generate toxic chlorine gas l Specifications A Specification Sheet 1 JWE 2400CUA L 25B AC SUPPLY VOLTAGE 3 phase
64. k Sheathed Heater H7 15 Band Heater Hot Water Outlet Pipe Overflow Pipe Top View e Thermostat Plate Thermal Protector 12 Inlet Water heater boil dry protection Valve WV Inlet Pipe Water Level Float Switch FS1 downward end Backup Water Level Float Switch FS2 upward end Front View Water Level Safety Float Switch FS3 downward end Thermistor TH2 hot water temperature control Thermal Protector TH14 Drain Hose QuBu ZON QOW 2eddn G2JA SJO 26 UO2 1315008 GOW Ajddng 104409 oneubeyy o4u02 jezzng OO Q S esunj ueBiejeq 281 yoo g JeuruuJe Do sbumes eBueuo jou enjrej jue eJd OL 32LLON JeyueAu 5 YOUMS peedg Z N LOW 044002 JUEL 2 LOW J0126e u02 oneuBe A JOJO N ue youms eBeyoA yueL 1ejsoog 104 281 JOW 4 x J ysemys q 104 LaL Yue Jejsoog GLX yoo g Wd Ae1ds ysem jeuBIs 9 pLX E 10198juo LX Aejay eseug ZLX Nd wy ys
65. l AYIA as wen d asvHd l ory b SAUDITA z 1 HE iod 11 72 DR AS qup d HUWHOJSNV L O INOLLOSNNOO NIYI AND MOOT TVNI 1 74
66. logged clean them with a scouring pad Pump Filter 13 Check the water level sensor If it is dirty clean it with a soft brush gt IMPORTANT Do not use a metal brush to clean the water level sensor The surfaces may be damaged or metal particles attached to the sensor may cause malfunction 14 Replace the separators in their correct positions 15 Install the left and right tank filters 16 Insert the drain pipe 66 17 To replace the upper wash spray arm hold it with the nozzles facing down and insert the joint into the pipe located at the back of the wash compartment Lift up the front then securely hook in the square hole 18 To replace the lower wash spray arm hold both sides with the nozzles facing up and put it under the rack rails from the front Insert the joint into the pipe located at the back of the wash compartment Fit the holes on the pins at the front of the wash tank Rack Rail AN 19 To replace the upper rinse spray arm insert the end of the pipe into the joint then turn and hook the top i 67 20 To replace the lower rinse spray arm put it between the rack rails insert the end of the pipe into the joint then turn and hook the front 21 Install the curtain L in the wash compartment Curtain Rod longer 22 Install the curtains S at the entrance
67. nd exit of the wash compartment 2 Open the service panel 3 To remove the upper wash spray arm hold it securely with one hand then pull the front lever towards you with the other hand 4 To remove the lower wash spray arm hold both sides slightly lift the front off the pins pull the arm towards you then lift off the back 5 To remove the upper rinse spray arm turn the top away from you to unhook then lift off the end of the pipe 64 6 To remove the lower rinse spray arm push down the rising part to unhook pull off the end of the pipe towards you then take it out from between the rack rails 7 Remove the separators 8 Take out scraps from the removed tank filters drain pipe and separators and wash them clean with a scouring pad IMPORTANT To prevent damage do not hit the filters on the sink to drop scraps or to drain the filters 9 If the wash spray arm and rinse spray arm nozzles are clogged use a wire or brush to unclog and wash them clean Rinse Spray Arm Spray Arm 10 Wash the curtains 65 11 Clean the wash compartment Remove any scraps from inside the wash compartment and wash tank Use a scouring pad to wash off heavy soils Remove any silverware left inside the wash compartment ZO Silverware 12 Check the pump filters inside the wash tank If they gy are c
68. njector Vinyl Hose Strainer Detergent Pump low 6 Wash Tank Water Boils Wash tank water boils Problem Possible Cause Remedy Out of position Set in position Thermistor MT See Thermistor Check UT Check for continuity Defective Magnetic Contactor Bad contacts Heater Control Relay and replace Control Board Note See Thermistor Check Removal and Replacement of Thermistor 47 7T Wash Tank Water Not Draining Wash tank water not draining Problem Drain Pipe Overflow Pipe Possible Cause Clogged Pinched Raised Clogged 48 Remedy Unclog Correct Correct Unclog D Float Switch Check and Cleaning for Booster Tank Water Level Float Switch and Backup Water Level Float Switch If an abnormal input signal is found by Diagnostic Procedure or the error code o1 or o2 is displayed check and clean replace the float switches according to the procedure below 1 Float Switch Check To check the float switches follow the steps below 1 Use the ON OFF button on the operation panel to turn off the unit then turn off the dishwasher and boostertank power supplies Lockout Tagoutto preventthe power supplies from being turned back on inadvertently 2 Remove the front panel and top panel of the booster tank 3 Remove the control box cover and disconnect the CN8 connector f
69. ocket set screws and tighten them securely 3 Align the gear motor shaft with the crankshaft from the wash tank 4 Be careful not to mix up the wire colors 10 Make a trial run and check for water leaks Bracket Wash Tank Flinger Coupling Hexagon Socket Set Screw Gear Motor 55 E Removal and Replacement of Conveyor 1 Remove the 4 bolts 2 at rear 2 at both sides securing the rear rack rail 2 Hold the conveyor and lift off the rear rack rail 3 Take out the conveyor slider 4 Remove the left and right frames from the conveyor 5 Remove the 5 nuts each of the conveyor rails to xN Pp release the hooks and the bearings 6 To replace reverse the above procedure Note Be careful of the slider direction when fitting the conveyor on the crankshaft slider 7 Adjust the reed switch position Push out the wider side 8 Make a trial run and check for water leaks Face the reinforcing rib side down nc Align the end of reed switch to the center of hole Reed Switch lt Front View gt Frame Rack Rail Rack Rail Conveyor Conveyor Frame Hook Bearing gt Roller Remove nuts B Frame 56 F Removal and Replacement of Crankshaft To remove 1 Remove the front panel Remove the conveyor Loosen the 6 hexagon socket set screws for the stopper and the coupling Lift off the crank together with the shaft Loosen the screw securin
70. oeuo 09 IM eu SIM LM 114 o3ny 7 44 50 NdY eziDJeue Jd 104 peso 45 4 4 nyejs jelu oiny 1 sdeis 81245 12 ing Chart iming E T 1 Auto Fill Cycle Sinus yun y pue Aejds p y ui 104498 YUL 1 5004 ZY YUL Jejsooq Q esoj JOU SBOP YMS YUL Jejsooq eu JI snjejs Josues eui eJoJeq eui ezi iqejs eun puooes g e s sezifueue ep su eui Ajddns Joy ou ui ApuenboeyJ seziB1eue ep seziDueue pue uoos dn 191sooq 99 suedo BAB YUL Jejsooq eu Jaye SHES ONE spuooes 0 eun Jeysoog ejqejsn pe jnejep 10 9eJ eaa 106 SION 90N 1101 oz gp x uu 18 7 2 utu EL epo 114 ONY 0 S 2 10 jp 440 NO Jeyeay xue usew
71. ons to change the setting value Return to Service Menu List Press the CHANGE button once again to return to the main service menu list Exit Service Menu and Save Settings Press the ON OFF button to exit the service menu and save the settings The display goes blank 19 b Service Menu Chart Factor nii in 10 second steps in 1 second steps in 1 minute steps in 1 F steps in 1 C steps in 1 F steps in 1 C steps xem e in 10 second steps in 10 second steps ll nodis dandi 5 in 1 second steps lE P OFF rinse water temperature in 1 minute steps 11 Booster Tank Temperature Correction MINE GN in 1R steps UT in 1K steps OFF fixed Cycle Time in 1 second steps OFF lock function off OFF alert off 17 Total Operation Time Before Alert 10 to 600 minutes 12 2h oF F 12 2h e porron crm _ OFF goes off after preset time 19 Power Supply Lock Function ON Ch keeps flashing until Jon or oF electrode is turned off OFF Ch goes off when ON OFF button is switched off Error Log NA through Note To erase the log press and hold the up and down buttons for 3 seconds with 21 is most recent one of the error codes displayed The unit js displayed if beeps once and the entire log clears the log is empty 20 8 Temperature Display Indicates the average water temperature re
72. or appears in the display For details see Error Codes 5 The wash rinse start switch is inactive during the auto fill cycle 2 Ready Cycle Unit Inactive READY lamp and RINSE TEMP or WASH TEMP lamp on WT WLS closed After a rinse cycle RPM de energizes and the READY lamp comes on WTH energizes when WT water temperature is at the wash temperature setpoint or lower WTH de energizes when WT water temperature is 5 F 3 C above the setpoint For details see Wash Temperature Setpoint service menu item 04 in II F 7 b Service Menu Chart BTH energizes when BT water temperature is 3 F 2 C below the rinse temperature setpoint or lower BTH de energizes when BT water temperature reaches the setpoint WV energizes de energizes when BT WLF S opens closes For details see Rinse Temperature Setpoint service menu item 05 in II F 7 b Service Menu Chart Note 1 The thermistors control WT and BT water temperatures 2 If one of the thermistors has an open or short circuit WTH or BTH de energizes and an error code appears in the display 3 WTH and BTH are controlled regardless of SPS operation 3 Wash Cycle Rinse Cycle WASH lamp and RINSE TEMP or WASH TEMP lamp When a rack is loaded from the wash compartment entrance and the wash start switch closes WPM energizes power is supplied to DFT and the WASH lamp comes on WPM draws water from WT and sends it through the wash spray arms The up
73. osition Low pump output Out of position Clogged Improperly loaded Excessively dirty 43 Remedy Clean Remove cause Clean tank filter Stop using neutral cleaner Set in position See Low Wash Pump Output Place in position Clean Load correctly Prewash Continue No supply See III C 5 No or Inadequate Detergent Rinse Aid Supply Detergent Insufficient supply Refill or adjust detergent feeder Unspecified detergent Use specified used detergent only Dirty Drain wash tank and Wash Tank Water supply fresh hot water Temperature too low Raise setting or see Heater Not Energized Temperature will not Reset overheat rise thermostat Control output error Check input output Heater Not Energized and repair or replace Magnetic contactor Replace defective Overheat thermostat Reset manually tripped Defective Replace Too high Adjust to medium or Conveyor Speed low Call electrician Too low Voltage 3 Inadequate Rinse Inadequate rinse Problem Possible Cause Remedy Clean Clogged with foreign matter Low Rinse Pump Output Rinse water line Clean scaled Voltage drop Remove cause Rinse pump defective Replace Clogged Clean Rinse Spray Arms Out of position Set in position Low pump output See Low Rinse Pump Output Improperly loaded Load correctl
74. other foreign matter in the water circuit 69 D Descaling As Required Use a descaler according to the supplier s instructions A WARNING 1 Carefully follow any instructions provided with the descaler 2 Always wear liquid proof gloves and goggles to prevent the descaler from coming into contact with skin or eyes 3 To prevent generation of toxic chlorine gas do not mix a descaler with a chlorinated cleaner 1 Pull out the drain pipe to drain water from the wash tank Start the auto fill cycle to fill the wash tank with hot water 2 Use the ON OFF button to turn off the unit Refer to the descaler s directions and add the proper amount of descaler to the wash tank The wash tank holds 26 4 gallons of water 3 Press and hold the up and down buttons and the CHANGE button then press the ON OFF button to select the PC Preventative Cleaning mode 4 Refer to the descaler s directions for the proper duration of cleaning When the proper amount of time has passed press the ON OFF button to stop cleaning 5 Check the wash tank interior Repeat steps 1 through 4 if necessary WARNING Be careful not to burn yourself with the hot water or parts in the wash tank 6 Drain the wash tank then start the auto fill cycle Run the dishwasher to rinse the wash tank thoroughly Drain the wash tank E Shutdown NOTICE If there is a possibilit
75. per spray arm WPM starts first followed by the lower spray arm WPM Then the conveyor starts to move the rack After the wash start switch opens and the extended wash cycle time factory default 30 seconds has expired WPM de energizes and power is cut to DFT For details see Extended Wash Cycle Time service menu item 01 in II F 7 b Service Menu Chart When the rinse start switch closes RPM energizes and power is supplied to RFT RPM draws water from BT and sends it through the rinse spray arms Rinse aid is fed into the rinse water line and sprayed from the rinse spray arms together with rinse water Any excess water in WT drains through the overflow pipe After the rinse start switch opens and the extended rinse cycle time factory default 15 seconds has expired RPM de energizes power is cut to RFT the WASH lamp goes off and the READY lamp comes on For details see Extended Rinse Cycle Time service menu item 02 in II F 7 b Service Menu Chart After both WPM and RPM de energize the conveyor stops If SP is opened during operation SPS opens WPM and RPM de energize and the conveyor stops If the wash rinse start switch is closed when SPS closes WPM and RPM energize and the conveyor restarts Note 1 If WT WLS opens after WPM energizes WPM de energizes and RPM energizes for the supplementary fill cycle time factory default 450 seconds to supply hot water into 10 WT The conveyor does not start during the suppl
76. rom the control board see II F 2 Control Board Layout 4 To check the booster tank water level float switch check for continuity across the orange and red wires 1 and 2 on the CN8 connector Confirm that the float switch is open when the float is down and closed when the float is up 5 To check the booster tank backup water level float switch check for continuity across the pink and light blue wires 3 and 4 on the CN8 connector Confirm that the float switch is open when the float is down and closed when the float is up 6 If any problem is found repair or replace the float switch 7 If the float switch is scaled up or dirty clean it according to 2 Float Switch Cleaning 2 Float Switch Cleaning Depending on local water conditions scale may build up on the float switches Scale on the switches can cause the floats to stick In this case the float switches should be cleaned 1 Use the ON OFF button on the operation panel to turn off the unit then turn off the dishwasher and boostertank power supplies Lockout Tagoutto preventthe power supplies from being turned back on inadvertently 2 Remove the front panel and top panel of the booster tank 3 Use a soft brush to remove scale or soil on the float switches or wipe down the float switches with a mixture of 1 part of Hoshizaki Scale Away and 25 parts of warm water 4 Rinse the parts thoroughly with clean water 5 If the float switch is removed repla
77. s error code Operation Code Error Booster tank sends error signal Item Possible Cause Remedy Defective Repair or replace Booster Tank Defective Replace Control Board Open circuit Repair or replace Connection Cable Connector not properly Reconnect connected 39 m Booster Tank Water Level Safety Error b2 f the booster tank water level safety float switch opens after the booster tank water level float switch closes the unit shuts down b2 appears in the display and the buzzer sounds To reset use the ON OFF button to turn the unit off and then back on Operation Code Error Booster tank water level safety float switch Unit stops opens after booster tank water level float switch closes Item Possible Cause Remedy Water supply pressure too low Water Heater Readjust Flow rate too low Readjust Filter clogged Clean Strainer Open circuit Repair or replace Water Valve Filter clogged Clean Defective Replace Booster Tank Water Open circuit or Repair or replace Level Safety Float connector not properly Switch connected Sticking Check and clean See ILD Float Switch Check and Cleaning Defective Replace Connector not properly Reconnect Control Board connected Defective Replace Disconnected or water Reconnect Rinse Spray Arm leaks from joint Pressure Reducing Clogged Clean Valve Def
78. tant to touch the metal part of the unit when handling or replacing the control board or operation board 3 Do not touch the electronic devices on the control board or operation board or the back of the control board or operation board 4 Do not change wiring and connections 5 Always replace the whole control board or operation board assembly if it goes bad Do not short out power supply to test for voltage 1 Control Board 1 Use the ON OFF button on the operation panel to turn off the unit then turn off the dishwasher and booster tank power supplies Lockout Tagout to prevent the power supplies from being turned back on inadvertently 2 Remove the front panel and the control box cover 59 3 Disconnect the control board connectors from the control board 4 Slide out the control board 5 Install the new control board 6 To replace reverse the above procedure 2 Operation Board 1 Use the ON OFF button on the operation panel to turn off the unit then turn off the dishwasher and booster tank power supplies Lockout Tagout to prevent the power supplies from being turned back on inadvertently 2 Remove the screws securing the operation box and the cable cover to the top of the dishwasher 3 Remove the 4 screws from the bottom of the operation box and remove the cover 4 Remove the screws securing the stay OP joint operation B and operation panel B 5 Disconnect the connector
79. ter tank drain hose to drain the booster tank WARNING To avoid possible burns allow the rinse water temperature to fall below 104 F 40 before draining 4 Remove the top panel of the booster tank 5 Disconnect the heater wiring at the closed end connectors 6 Remove the nuts from the float switch 7 To replace reverse the above procedure Note 1 Keep the float switch straight in the proper direction to prevent contact with the tank walls and other parts 2 The tightening torque for the nuts securing the float switch must be no more and no less than 14 Ibfein 62 Band L Removal and Replacement of Thermostat NOTICE Always use the recommended sealant high thermal conductive type Model KE4560RTV manufactured by SHINETSU SILICONE Part Code 60Y000 11 or Part Code 4A0683 01 or equivalent When replacing the thermostat in the wash water tank or the booster tank remove the thermostat clear any remaining sealant from the tank walls apply a proper amount of the above recommended sealant to the new thermostat bulb then install the new thermostat in its correct position 63 V Cleaning and Maintenance Instructions A Daily Maintenance IMPORTANT Be sure to clean the dishwasher after closing time every day It is difficult to remove heavy soils left overnight In high temperature conditions food scraps will rot and affect sanitary operation 1 Remove the three curtains at the entrance center a
80. the rinse water line and sprayed from the upper and lower rinse spray arms into the wash compartment 73 D B W iagram iring L 1 OHYOR IOWINOD 38 D 20 ano 18
81. y Dish Rack Temperature too low Raise setting or see Heater Not Eneraized Too short Adjust longer Rinse Cycle Time Too low Call electrician Voltage Rinse Booster Tank Water 4 Dishwasher Will Not Start Wash Rinse Cycle Dishwasher will not start wash rinse cycle Problem Wash Pump Inoperative Rinse Pump Inoperative Service Panel Magnet Detection Error Wash Start Switch Rinse Start Switch 46 Possible Cause Remedy Protector tripped Wait until wash pump cools Remove obstacles Locked with foreign matter Controller input output Check input output error and repair or replace Wait until Rinse Pump cools Magnetic contactor defective Protector tripped Locked with foreign Remove obstacles matter Controller input output Check input output error and repair or replace Close completely Relay defective Service panel not fully closed Magnet out of position Set in position Service panel switch out of position Set in position Remove Magnetic material caught between service panel and tank Defective 5 No or Inadequate Detergent Rinse Aid Supply No or inadequate detergent rinse aid supply Problem Possible Cause Remedy Refill Detergent Rinse Aid Clogged or kinked Clean or straighten Air in line Purge air Supply volume too Set to proper volume Supply Line I
82. y that the ambient temperature may fall below Water Heater 32 F 0 C and freeze the unit be sure to drain the unit The water Dishwasher 7e supply line could be damaged and Shut off leak water resulting in damage to Gas Supply Line the surrounding property Shut off Valve Drain Valve To drain out the water heater close the water supply line shut off valve and open the drain valve and water Booster Tank Water Supply Valve supply valve 70 1 Press the ON OFF button on the operation panel The display and lamps go off 2 Turn off the water heater 3 Turn off the gas and water supplies IMPORTANT To operate the water heater follow its instruction manual Service Panel 4 Open the service panel 5 Pull out the drain pipe to drain water from the wash tank WARNING When pulling out the drain pipe be careful not to touch the wash water It may cause burns or skin irritation Turn the drain pipe if it is hard to pull out 6 Remove the two tank filters without spilling scraps inside 71 F Long Storage Relocation Disposal Transfer When preparing the unit for long storage shut down and clean the unit according to sections A E If something seems wrong when restarting the unit after long storage turn off the power supply and immediately contact an authorized Hoshizaki service company WARNING 1 When restarting the unit after long

Hoshizaki Dishwasher JWE-24000CUA-L-25B User's Manual

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