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SERVICE MANUAL

HOSHIZAKI

DISHWASHER

JWE-2400CUA-L-25B

JWE-2400CUA-R-25B

NO. J002-794

ISSUED:  APR. 1, 2011

REVISED:  SEP. 6, 2011

MODEL

Содержание JWE-2400CUA-L-25B

Страница 1: ...SERVICE MANUAL HOSHIZAKI DISHWASHER JWE 2400CUA L 25B JWE 2400CUA R 25B NO J002 794 ISSUED APR 1 2011 REVISED SEP 6 2011 MODEL...

Страница 2: ...nd 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 Depa...

Страница 3: ...E 2400CUA R 25B 5 II General Information 6 A Construction 6 1 Dishwasher 6 2 Booster Tank 7 3 Control Box 8 B Functions 9 1 Increasing Rinse Water Flow Rate 9 C Sequence of Operation 9 1 Auto Fill Cyc...

Страница 4: ...al and Replacement of Rinse Pump Motor 52 D Removal and Replacement of Gear Motor 55 E Removal and Replacement of Conveyor 56 F Removal and Replacement of Crankshaft 57 G Removal and Replacement of Co...

Страница 5: ...r tank See the nameplate for proper voltage and breaker fuse sizes Failure to use proper breakers or fuses can result in tripped breakers blown fuses or damage to existing wiring This could lead to he...

Страница 6: ...INSE SYSTEM PUMP DRAIN SYSTEM START DRY SYSTEM REFUSE DISPOSAL DETERGENT DISPLAY TANK CAPACITY HOT WATER SUPPLY TEMPERATURE CONTROL CONNECTION WATER SUPPLY DRAIN Inlet 3 4 FPT Outlet 1 1 2 MPT CONTROL...

Страница 7: ...IN SYSTEM START DRY SYSTEM REFUSE DISPOSAL DETERGENT DISPLAY TANK CAPACITY HOT WATER SUPPLY TEMPERATURE CONTROL CONNECTION WATER SUPPLY DRAIN Inlet 3 4 FPT Outlet 1 1 2 MPT CONTROL Microprocessor cont...

Страница 8: ...3 B Nameplate Rating For certification marks see the nameplate on the dishwasher We reserve the right to make changes in specifications and design without prior notice...

Страница 9: ...4 C Dimensions Connections 1 JWE 2400CUA L 25B Units mm in...

Страница 10: ...5 2 JWE 2400CUA R 25B Units mm in...

Страница 11: ...Switch Conveyor Table Limit Switch Wash Spray Arm stationary Service Panel Switch Booster Tank Water Valve Backup Water Level Float Switch Water Level Float Switch Water Level Safety Float Switch Wate...

Страница 12: ...Water Valve WV Inlet Pipe Thermal Protector TH7 12 heater boil dry protection Water Level Float Switch FS1 downward end Backup Water Level Float Switch FS2 upward end Water Level Safety Float Switch...

Страница 13: ...trol Relay Magnetic Contactor Lower Wash Spray Arm PM Magnetic Contactor Upper Wash Spray Arm PM Voltage Tap Switch Magnetic Contactor MC1 2 Wash Tank Heater Control MC1 right MC2 left Inverter NOTICE...

Страница 14: ...e end of the auto fill cycle there is a 5 second dwell time CB checks WT WLS If WT WLS is closed BZ beeps the AUTO FILL lamp goes off and the READY lamp comes on If WT WLS is open BZ beeps continuousl...

Страница 15: ...ash 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 upper spray arm WPM starts first followed...

Страница 16: ...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...

Страница 17: ...service menu item temp reaches rinse temp setpoint 04 or lower 04 or lower WT WLS open service menu item 05 WTH de energized when WT water temp WTH de energized when WT water temp WV energized de ene...

Страница 18: ...oes not close after 10 minutes in booster tank auto fill error code A2 booster tank auto fill error appears in the display and the unit shuts down Note 3 Note 1 Note 2 Booster tank auto fill delay tim...

Страница 19: ...tpoint Note 3 The conveyor stops when both the wash pump and the rinse pump de energize Note 4 The rack handle shape opens the wash rinse start switch for a moment But the extended wash rinse cycle ti...

Страница 20: ...ilure 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 th...

Страница 21: ...VH Connector 5P X1 X2 X3 X4 X5 X6 X7 CN8 CN9 CN10 CN1 CN7 CN6 CN5 CN11 CN13 CN12 CN4 CN2 CN3 1 4 1 6 1 10 1 1 6 2 1 1 7 5 1 3 1 1 2 3 1 5 1 8 1 4 VR1 Signal Input XA Connector 10P Power Input VH Conne...

Страница 22: ...evel Float Switch Rinse Start Switch 1 CN1 4 1 CN2 6 CN3 CN4 CN9 CN8 CN7 CN5 CN11 CN10 CN6 CN12 CN13 Transformer 11V 7 7V Upper Wash Pump Rinse Pump Wash Tank Heater 1 Connectors CN 1 4 are VH Connect...

Страница 23: ...d parameters See II F 7 Service Menu and Error Log c Error Codes Error codes A1 to A3 H1 to H6 L1 L2 b1 b2 o1 o2 are designed to protect the unit These codes give information or warnings in the event...

Страница 24: ...el 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 chang...

Страница 25: ...o Fill Timer 1 to 99 minutes in 1 minute steps 1 to 99 20 11 Booster Tank Temperature Correction Fahrenheit 0 to 9R in 1R steps 0 to 9 0 Celsius 0 to 5K in 1K steps 0 to 5 0 12 Water Temperature Displ...

Страница 26: ...e and beeps If more than one error occurs the display cycles through the relevant error codes For service corrections see III B Error Codes Error Codes A1 Wash Tank Auto Fill Error A2 Booster Tank Aut...

Страница 27: ...ensure the NSF specified minimum wash water temperature of 160 F 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...

Страница 28: ...item 18 is set to OFF Alert Function Setting Flow Wash Tank Refill Alert Service Menu 16 Total Operation Time Before Alert ON OFF Alert function OFF factory default Set service menus 17 to 19 Service...

Страница 29: ...ode 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 b...

Страница 30: ...e 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 wate...

Страница 31: ...m resets If whole unit stops use ON OFF button to turn the unit off and then back on o1 Booster Tank Water Level Error 1 Booster Tank Water Level Float Switch Closed Both booster tank water level floa...

Страница 32: ...r Tank Error Booster tank error output contacts open Normal After booster tank error is resolved alarm resets b2 Booster Tank Water Level Safety Error Booster tank water level safety float switch open...

Страница 33: ...low Pipe Out of position Set in position Wash Tank Water Level Sensor Heavy scale or soil buildup Clean Connector not properly connected Reconnect Open circuit Repair or replace Defective Replace Rins...

Страница 34: ...29 Sticking with float in ON position Check and clean See III D Float Switch Check and Cleaning Defective with internal contacts in ON position Replace Continue Booster Tank Water Level Float Switch...

Страница 35: ...ready Strainer Filter clogged Clean Filter clogged Clean Defective Replace Water Valve Open circuit Repair or replace Open circuit Repair or replace Control Board Connector not properly connected Rec...

Страница 36: ...or 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...

Страница 37: ...then back on See the chart below for possible causes and remedies Note See III D Float Switch Check and Cleaning Control Board Defective Replace Water Valve Control relay contacts fused Replace Defect...

Страница 38: ...ck on See the chart below for possible causes and remedies Note See III D Float Switch Check and Cleaning Booster tank water level float switch is open and booster tank backup water level switch has r...

Страница 39: ...ay and the buzzer 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 af...

Страница 40: ...display and the buzzer 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 e...

Страница 41: ...uts down H6 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 Note See IV I Removal and Replacemen...

Страница 42: ...irst 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 energize...

Страница 43: ...n 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 Iftheunitshutsdownwiththetablelimitswitchclosed t...

Страница 44: ...stay closed for more than 2 seconds the alarm resets Note The booster tank error input must be connected to indicate this error code Booster tank sends error signal b 1 Code Error Item Possible Cause...

Страница 45: ...s Operation Flow rate too low Readjust Water supply pressure too low Readjust Water Heater Strainer Filter clogged Clean Filter clogged Clean Defective Replace Water Valve Open circuit Repair or repla...

Страница 46: ...for recovery No Water Supply Water failure Wait for recovery Shut off valve closed Open Strainer clogged Clean Loose connection Tighten Not within specifications Refer to nameplate and correct Off blo...

Страница 47: ...2 Continue Transformer Open coil winding Replace Wiring to Control Board Loose connections or open Check continuity and repair or replace Control Board In alarm See III B Error Codes Defective Replace...

Страница 48: ...s not clean Problem Possible Cause Remedy Wash pump defective Replace Out of position Wash Spray Arms Clean Low pump output Set in position See Low Wash Pump Output Continue Vapor lock due to use of n...

Страница 49: ...e specified detergent only Check input output and repair or replace Control output error Reset manually Overheat thermostat tripped Replace Defective Replace Magnetic contactor defective Wash Tank Wat...

Страница 50: ...Possible Cause Remedy Rinse pump defective Replace Rinse Spray Arms Low pump output See Low Rinse Pump Output Rinse Cycle Time Too short Adjust longer Voltage Too low Call electrician Clogged Out of p...

Страница 51: ...e Replace Protector tripped Wait until Rinse Pump cools Locked with foreign matter Remove obstacles Controller input output error Check input output and repair or replace Relay defective Replace Rinse...

Страница 52: ...roblem Possible Cause Remedy Supply Line Injector Vinyl Hose Strainer Air in line Purge air Supply volume too low Set to proper volume Detergent Pump Defective Replace Thermistor Out of position Set i...

Страница 53: ...48 7 Wash Tank Water Not Draining Drain Hose Clogged Unclog Wash tank water not draining Problem Possible Cause Remedy Pinched Correct Clogged Unclog Drain Pipe Overflow Pipe Raised Correct...

Страница 54: ...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...

Страница 55: ...dvertently 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...

Страница 56: ...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...

Страница 57: ...oper operation 8 Replace the front panel 9 Make a trial run and check for water leaks Wash Pump Motor Upper Spray Arm O Ring Band Wash Pump Motor Lower Spray Arm Fan Motor Fan Motor Pump Plug Bracket...

Страница 58: ...elease 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...

Страница 59: ...ter Tank Discharge Pipe Rinse Pump Motor Rinse Pump Motor Suction Inlet Flexible Tube JWE 2400CUA L 25B View without rinse pump motor Booster Tank Discharge Pipe Band Rinse Pump Motor Suction Inlet Fl...

Страница 60: ...sed 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...

Страница 61: ...nforcing rib side down Roller Frame Rack Rail Conveyor Frame Conveyor Rack Rail Frame Roller Hook Bearing Remove nuts 5 Remove the 5 nuts each of the conveyor rails to release the hooks and the bearin...

Страница 62: ...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...

Страница 63: ...the arrow remove the switch body remove the nut behind the volume and pull out the volume 6 To replace reverse the above procedure Control Box H Removal and Replacement of Thermistor NOTICE 1 The the...

Страница 64: ...er 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 Be careful not to damage the wiring when handling t...

Страница 65: ...plies 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...

Страница 66: ...booster tank heater WARNING To avoid possible burns allow the rinse water temperature to fall below 104 F 40 C before draining 4 Remove the tank filters and the separator wash tank heater Remove the...

Страница 67: ...from being turned back on inadvertently 2 Remove the front panel of the booster tank 3 Use the booster tank drain hose to drain the booster tank WARNING To avoid possible burns allow the rinse water...

Страница 68: ...TSU 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 th...

Страница 69: ...ve the three curtains at the entrance center and 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 tow...

Страница 70: ...rs 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...

Страница 71: ...ad to wash off heavy soils Remove any silverware left inside the wash compartment 13 Check the water level sensor If it is dirty clean it with a soft brush IMPORTANT Do not use a metal brush to clean...

Страница 72: ...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...

Страница 73: ...insert the end of the pipe into the joint then turn and hook the front Ring 21 Install the curtain L in the wash compartment 22 Install the curtains S at the entrance and exit of the wash compartment...

Страница 74: ...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 con...

Страница 75: ...e 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...

Страница 76: ...ion manual 4 Open the service panel IMPORTANT Be sure to hook the service panel in its open position 5 Pull out the drain pipe to drain water from the wash tank WARNING When pulling out the drain pipe...

Страница 77: ...ing 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 re...

Страница 78: ...ank The rinse aid is fed by the rinse aid feeder not provided by Hoshizaki into the rinse water line and sprayed from the upper and lower rinse spray arms into the wash compartment Detergent Feeder no...

Страница 79: ...74 B Wiring Diagram...

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