Hoshizaki DIM-30DE-2 Service Manual Download Page 43

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Ice storage at normal temperature (R

T 15°C, WT

above 13°C)

Freeze cycle

Bin control cycle

Defrost cycle

ater valve

ON OFF

0°C

100%

60%

30%

OFF

Down

Actuator motor

Hot gas valve

Pump motor

Fan motor

Bin control switch

Compressor

ON OFF

7-segment display

20s

30s

80s

10s

20s

10s

Defrost completion temp.

Freeze completion temp.

Defrost cycle

Cube control thermistor temp. (°C)

Freeze completion rate (%)

Summary of Contents for DIM-30DE-2

Page 1: ...DIM 30DE 2 E2HA 990 073120 CUBE ICE DISPENSER SERVICE MANUAL...

Page 2: ...ZE CYCLE 13 f FREEZE COMPLETION CONTROL 14 g WATER SUPPLY CONTROL 17 h AMBIENT TEMPERATURE CORRECTION 17 i DIMPLE DIAMETER SETTING 17 j BIN CONTROL CYCLE 18 k RESET SWITCH 18 l 7 SEGMENT LED 18 3 MODE...

Page 3: ...UCTION 53 2 LOW ICE PRODUCTION 55 3 ABNORMAL ICE 55 4 OTHERS 56 VII REMOVAL AND REPLACEMENT OF COMPONENTS 57 1 PANELS 57 a FRONT PANEL UPPER serial number K0 or earlier 57 b FRONT PANEL LOWER serial n...

Page 4: ...iii 12 CONTROLLER BOARD 71 a MODIFICATION 71 b REPLACEMENT 72 13 THERMISTOR FOR CUBE CONTROL 73 14 FAN MOTOR 74 15 GEAR MOTOR 74 16 BIN CONTROL SWITCH 75 17 PUSH BUTTON SWITCH AND PILOT LAMP 76...

Page 5: ...APACITY WATER CONSUMPTION PER 24h OPERATING CONDITIONS COMPRESSOR PROTECTION ELECTRIC CIRCUIT PROTECTION ICE MAKING WATER CONTROL HARVESTING CONTROL REFRIGERANT CONTROL ICE DISPENSING SYSTEM CONNECTIO...

Page 6: ...2 Auxiliary code K1 or later...

Page 7: ...ION a OVERVIEW Auxiliary code K0 or eariler Removable Side Access Panel Louver Front Panel Upper Front Panel Lower Pilot Lamp Spout Ice Station Air Filter Switch Cover Top Panel Nameplate Push Button...

Page 8: ...4 Auxiliary code K1 or later Removable Side Access Panel Louver Front Panel Pilot Lamp Spout Ice Station Air Filter Switch Cover Top Panel Nameplate Push Button Power Switch...

Page 9: ...Valve Water Supply Pipe Pump Motor Actuator Motor Gear Motor Drain Hose Power Switch Air Guide Water Supply Inlet Accumulator Evaporator Water Tank Drain Pan Bin Control Switch Auger Drain Outlet Con...

Page 10: ...6 II CONTROLLER BOARD 1 CONFIGURATION Part Number P01873 01 P01873 02 Evaporator Tin plated Electroless nickel plated a CONTROLLER BOARD LAYOUT Main Board Sub Board Combination...

Page 11: ...4P Cube Control Thermistor Input XA Connector 2P Data Input Output PA Connector 8P Actuator Drive Output VH Connector 3P Pump Motor Hot Gas Valve Fan Motor Water Valve Compressor AC Relay Drive Outpu...

Page 12: ...glass sealed Handle with care Disconnect the connector CN13 on the board Remove the screw and the thermistor holder on the evaporator Immerse the sensor part in a glass containing ice and water for 5...

Page 13: ...or 30s Freeze setting mode Flush mode press 3s Freeze setting mode Display mode press 3s Water pan opens initial cycle Maintenance mode press 3s Normal mode Flush mode Check contents Water pan starts...

Page 14: ...ess the up and down switches together for 15 seconds while the model code is indicated in the display mode see 3 c DISPLAY MODE Model setting mode Return to normal mode P01873 01 Ver 1 9A or later P01...

Page 15: ...t value with 1 or 2 Press RESET button to memorize set value and return to setting number Leave buttons untouched for 30 sec to shift to normal mode All settings are adjustable Adjustable range Nos 2...

Page 16: ...valve opens to supply defrosting water water pan cleaning water for a specific time The defrosting water supply time varies between the water temperatures above and below 13 C In the initial cycle th...

Page 17: ...stor senses the temperature that will be added with a predetermined offset value and used as the water temperature in the freeze cycle water pan opening cycle defrost cycle and water pan closing cycle...

Page 18: ...rated values reach the target the freeze cycle completes Cube control thermistor temp Integration begins when ice starts to form Time 12 min Temperature 18 C 0 C Freeze cycle time min Integration Evap...

Page 19: ...r temperature curves finds that the red colored area varies in different seasons Note It is assumed that the water temperature is the same in these examples as the time to reach the zero degrees mark...

Page 20: ...Time x temp 2 Providing the calculated energy to icemaking water can produce ice with fixed dimple size not affected by ambient conditions Actually after the evaporator temperature becomes 0 C the ice...

Page 21: ...etermined offset value plus the cube control thermistor temperature after icemaking water is supplied as mentioned in 1 and the pump motor runs for 30 seconds The water temperature offset value is adj...

Page 22: ...l is available because the water pan position is detected by the hall IC not by a change switch 3 When the reset switch is pressed and released while the icemaker is off in the bin control cycle the i...

Page 23: ...flush mode with the water pan closed the freeze backup timer operates and the display shows E1 If the cube control thermistor senses a temperature below the defrost completion temperature the water pa...

Page 24: ...display shows 1 2 Press the up switch to increase the number and the down switch to decrease the number 3 Press the reset switch to select the desired number The current set value flashes in the disp...

Page 25: ...completion temp correction 0 to 20K 1 Others 21 Double stack bin control 0 No 1 Yes 1 22 Refrigeration unit operation in bin control cycle 0 No 1 Yes 1 Model 30 Type 0 water cooled large 1 small 2 me...

Page 26: ...onditions like at 1 C wt 5 C based on integrated value inside controller board determined by constants 1 and 2 6 Freeze backup timer Timer setting to forcibly complete freeze cycle if cube control the...

Page 27: ...r 37 Compressor output selection Selection between AC supply and DC supply normal setting AC supply Transformer voltage drop is too large to input both Slush ice 50 Pump off time Pump off time for slu...

Page 28: ...tor temperature rises depending on the ambient temperature The water pan starts to close earlier when the ambient temperature is higher and the water pan starts to close later when the ambient tempera...

Page 29: ...ice in the evaporator are torn off and remain frozen on the surface of the water plate This linked ice is not completely melted by the cleaning water water supply for flushing the water plate surface...

Page 30: ...7 10 14 Full partial drain flush selection 0 0 15 Additional icemaking water supply time 0 0 17 Defrosting water control 0 0 18 Defrost completion temp correction 0 0 Other 21 Double stack bin control...

Page 31: ...splayed Display Mode List No Item Description Clear n1 Freeze cycle time count up min 0 to 99 min No n2 Freeze cycle completion rate 0 to 100 00 100 No n3 Current cube control thermistor temp Rounded...

Page 32: ...for more than 3 seconds the display mode starts and the display shows n1 2 Press the up or down switch to have h6 in the display 3 Press the reset switch The current memorised model code appears in t...

Page 33: ...aced Chosen model code displayed Model code memorised Controller Board P01873 02 Controller board replaced Chosen model code displayed Model code memorised Model Code List 1st Digit 2nd Digit Model 1...

Page 34: ...1 Abnormal freeze cycle E2 Abnormal defrost cycle EE Other See 5 ERROR CODES Water circuit flush b MAINTENANCE MODE No Item Display example 1 Defrost completion temp 16 C 2 Integrated constant 1 temp...

Page 35: ...s No 1 21 Double stack bin control 0 1 22 Refrigeration unit operation in bin control cycle 30 Model type Same as Nos 21 and 22 Setting range from 0 to 3 34 Defrost cycle low temp control operating te...

Page 36: ...p 13 C or more Water temp less than 13 C n6 Current condenser thermistor temp Same as n3 and n4 h1 Last freeze cycle time min 21 min h2 Number of freeze cycles If counted number of cycles is 162100 h3...

Page 37: ...ithin 60 seconds and 3 minutes have passed even with opening failure control Halt Press reset switch Unit resumes operation after 60 minutes and repeats the above error Shut down E4 Water pan closing...

Page 38: ...ect E2 Hot gas valve Opening failure Replace Controller board Defective Replace E3 Actuator motor Defective Replace Controller board Relay contact failure Replace Defective Replace E4 Actuator motor D...

Page 39: ...evices on the controller board or the back of the controller board 4 Do not repair the electronic devices and parts on the controller board in the field except for the fuse 250V AC 6 3A 5mm DIA x 20mm...

Page 40: ...lights up The code 00 does not belong to any model 7 Press the up switch to increase the first digit in the 7 segment display and the down switch to increase the second digit The digit changes in the...

Page 41: ...troller board will then need to be reprogrammed select and memorise the correct code for the machine using steps 7 and 8 above Note 1 Be sure to get static free before servicing the controller board 2...

Page 42: ...N OFF ON OFF ON OFF ON OFF ON OFF ON OFF 0 0 C 100 60 30 OFF Up Down Actuator motor Hot gas valve Pump motor Fan motor 7 segment display Bin control switch 20s 20s 10s 20s 20s 20s 1 20s Max 95s 6s 3 3...

Page 43: ...lve ON OFF ON OFF ON OFF ON OFF ON OFF 0 0 C 100 60 30 OFF Up Down Actuator motor Hot gas valve Pump motor Fan motor Bin control switch Compressor ON OFF 7 segment display 20s 30s 80s 10s 20s 20s 1 6s...

Page 44: ...emaking water additional water supply time 20s 1 When the power is turned on or the unit resumes operation after a bin control cycle the water temperature is considered less than 13 C and the water va...

Page 45: ...sh down its top while turning the keyhole clockwise See Fig 2 7 When water supply is resumed open the drain valve first Then gradually open the water supply tap to completely drain out dirty water 8 T...

Page 46: ...when the water pan has fully opened 5 Clean the storage bin liner spout drain pan and ice station and dry them thoroughly See IV MAINTENANCE INSTRUCTIONS 6 Refit the front panel upper and push down it...

Page 47: ...the plastic parts with water above 40 C or in a dishwasher 1 MACHINE EXTERIOR SPOUT ICE STATION Wipe the exterior spout and ice station at least once per week with a clean soft cloth Use a damp cloth...

Page 48: ...lean damp cloth to wipe off the cleaner 7 Wash the storage bin liner with clean water 8 Refit the drain pan and front panel upper in their correct position Run the bin control switch lead through the...

Page 49: ...from the water valve 4 Remove the mesh filter from the water valve 5 Clean the mesh using a brush 6 Replace the mesh and fitting nut in their correct positions 7 Open the water supply tap 8 Plug in th...

Page 50: ...p panel and front panel 5 Disconnect the inlet hose from the water valve 6 Remove the mesh filter from the water valve 7 Clean the mesh using a brush 8 Replace the mesh and inlet hose in their correct...

Page 51: ...sanitizer immediately 4 Do not use any ammonia type cleaners on any part of the ice dispenser 5 When the ambient and water temperatures are 10 C or below the water pan may remain open Warm the icemak...

Page 52: ...completely flushed from the water circuit or damage could occur to the plastic parts SANITIZING INSTRUCTIONS Note Sanitizing should always be completed after cleaning or alternately as an individual...

Page 53: ...e above step 17 at least three times to rinse thoroughly 19 Plug in the ice dispenser or connect the power source Check for proper icemaking operation 20 Complete storage bin cleaning as detailed in I...

Page 54: ...r Valve Evaporator Pump Motor Water Tank Capillary Tube Hot Gas Valve Drier Condenser Fan Motor Compressor Water Circuit Refrigerant Circuit Strainer U Trap Drain Outlet Ice Station Trap Accumulator C...

Page 55: ...BK BK BK R R GR Y GR Y BU GY S M C BK GR Y BU W BR FUSE 5A O O BU BU BK BK BR BK BK BK BU BU BR BU BU P Y R R R R BR R V CAP 0 4 F 1 0 F 0 4 F V CAP BR GY GY W W W Y CN13 CN11 CN16 CN5 RELAY X7 RELAY...

Page 56: ...15 21 32 Cube Hole Diameter mm 5 15 5 15 5 15 5 15 DIM 30DE 2 Ice Production kg d 40 35 6 27 7 18 20 Freeze Cycle Time min 17 5 21 1 30 1 Defrost Cycle Time min 3 6 2 2 1 5 Water Consumption lit h 4 7...

Page 57: ...G CONTROLLER BOARD h Hot gas solenoid valve 1 Continues to open in freeze cycle and high temperature safety backup timer operates 1 Check for power OFF in freeze cycle and replace i Water solenoid val...

Page 58: ...el in water tank too low 1 Clean c Water system 1 Water leaks 1 Check connections for water leaks and repair 2 Clogged 2 Clean d Pump motor 1 Motor winding opened 1 Replace 2 Bearing worn out 2 Replac...

Page 59: ...tly c Hot gas valve 1 Defective 1 Replace d Thermistor controller board 1 See II CONTROLLER BOARD e Fan motor 1 Runs during defrost cycle 1 Check wiring 3 ABNORMAL ICE PROBLEM CHECK POSSIBLE CAUSE REM...

Page 60: ...SSIBLE CAUSE REMEDY 1 Ice dispenser will not stop when bin is filled with ice a Bin control switch 1 Out of position 1 Place in position 2 Bad contacts 2 Check for continuity and replace b Controller...

Page 61: ...of the front panel lower 4 Tilt the top of the front panel lower slightly toward you and lift it off 5 Disconnect the drain hose from the ice station 6 Remove the connectors from the front panel lowe...

Page 62: ...EFRIGERATOR COVERS Auxiliary code K0 or earlier The refrigerator covers A and B are located on top of the machine compartment as partitions and fitted with the control box 1 Remove the air guide 2 Rem...

Page 63: ...witch box is located at the top of the refrigerator cover A to enclose the power switch 1 Remove the four machine screws securing the switch box 2 To refit the switch box reverse the above procedure F...

Page 64: ...R134a Repair of the refrigerant circuit needs brazing It is no problem to use the same handy flux that has been used for the current refrigerants However its entrance into the refrigerant circuit sho...

Page 65: ...egulation Recover the refrigerant from the access valve and store it in a proper container Do not discharge the refrigerant into the atmosphere This is a fineable offence When replacing the drier take...

Page 66: ...the low side disconnect the low side charging line and cap off the access valve 8 Always cap the access valves to prevent a refrigerant leak 9 Always thoroughly leak test all joints and valve caps 10...

Page 67: ...sition 17 Replace the front panel and rear access panel in their correct positions 18 Plug in the ice dispenser or connect the power source Note Hoshizaki recommends that compressor starting electrics...

Page 68: ...s 3 Recover the refrigerant and store it in a proper container if required by an applicable law See 2 b REFRIGERANT RECOVERY 4 Remove the water pan assembly referring to 7 WATER PAN ASSEMBLY 5 Disconn...

Page 69: ...coil 6 Remove the valve and drier using brazing equipment 7 Braze the new hot gas valve with nitrogen gas flowing at a pressure of 0 2 0 3 bar WARNING Always protect the valve body by using a damp cl...

Page 70: ...an 3 Unplug the ice dispenser or disconnect the power source 4 Disconnect the pump motor leads in the wiring channel 5 Remove the two extension springs from the cam arms 6 Remove the water pan bracket...

Page 71: ...d check for leaks 9 Replace the panels in their correct positions 9 WATER VALVE 1 Close the water supply tap 2 Unplug the ice dispenser or disconnect the power source 3 Remove the top panel and front...

Page 72: ...ve the actuator motor bracket 7 Remove the spring pin securing the shaft to the cam 8 Remove the actuator motor 9 Install the new actuator motor in the reverse order of the removal procedure 10 Check...

Page 73: ...witch on the control box to open the water pan 3 Unplug the ice dispenser or disconnect the power source 4 Remove the extension spring from the cam arm B 5 Remove the split pin from the cam shaft 6 Re...

Page 74: ...70 Fig 14 a a b 10 14 11 16 16 23 22 22 23 27 13 3 9 25 5 12 26 1 18 24 16 b 28 29 29 15 2 4 13 19 20 17 15 21...

Page 75: ...service board package includes Controller Board 1 pc Label 1 pc Instruction Sheet 1 pc 2 Modify the service board referring to the instruction sheet attached ICEMAKING ASSEMBLY AND CAM MECHANISM INDE...

Page 76: ...he reverse order of the removal procedure 6 Replace the panel in its correct position 7 Plug in the ice dispenser or connect the power source Fig 15 1 Control Box A 2 Control Box B 3 Tapping Screw 5 B...

Page 77: ...evaporator front side 5 Install the new thermistor in the reverse order of the removal procedure by using a sealant high thermal conduct type See Fig 16 Note Recommended sealant is KE4560RTV manufact...

Page 78: ...lug in the ice dispenser or connect the power source 15 GEAR MOTOR 1 Press the push button to dispense all the ice in the storage bin 2 Remove the front panels upper and lower and turn off the power s...

Page 79: ...ch base and secure them with the u nut 4 To refit the switch base put the switch case shaft left into the left side mounting hole in the switch base Use the u notch on the switch base to thrust the sw...

Page 80: ...ousing screw Detach the push button switch from the ice station 8 Remove the supporter from the new push button switch Fit the housing screw into the hole on the ice station and attach the stopper to...

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