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Hoshizaki M029-897 manuel d'utilisation

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Table des matières du manuel d’utilisation

  • Page 1

    Hoshizaki “A Superior Degree of Reliability” www .hoshizaki.com Model IM-500SAA Stackable Square Cuber Hoshizaki America, Inc. SE R VICE MAN U AL Number: M029-897 Issued: 2-8-2013 Revised: 5-19-2014[...]

  • Page 2

    2 W ARNING Only quali ed ser vice technicians should inst all and ser vice the appliance. T o obtain the name and phone number of y our local Hoshizaki Cer ti ed Ser vice Repr esentativ e, visit www .hoshizaki.com. No ser vice should be under tak en until the technician has thor oughly r ead this Ser vice Manual. F ailure t o ser vice and mai[...]

  • Page 3

    3 CONTENTS Impor tant Saf et y Inf or mation ................................................................................................. 4 I. Construction and W ater/Refrigeration Cir cuit Diagram ....................................................... 6 A. Construction .........................................................................[...]

  • Page 4

    4 Impor tant Safety Inf ormation Throughout this man ual, notices appear to bring y our at tention t o situations which could result in death, serious injur y , damage to the appliance , or damage to pr oper t y . W ARNING Indicates a hazar dous situation which could r esult in death or serious injury . NO TICE Indicates a sit uation which could re[...]

  • Page 5

    5 W ARNING, continued • The appliance is not intended f or use by per sons (including children) with r educed ph ysical, sensory , or mental capabilities, or lac k of e xperience and knowledge, unless they ha ve been giv en super vision or instr uction concerning use of the appliance by a per son responsib le f or their saf et y . • Children sh[...]

  • Page 6

    6 I. Construction and W ater/R efrigeration Cir cuit Diagram A. Construction 1 . Air-Cooled Model (S AA) Model Shown: IM-50 0SAA W ater T ank Bin Contr ol Evapor ator Thermistor F use Holder Contr ol Switch Thermostatic Expansion V alve W ater Plate Evapor ator Inlet W ater V alv e P ump Motor Actuat or Motor Drain P an Contr ol Bo x Drier Compr es[...]

  • Page 7

    7 B. W ater/R efrigeration Cir cuit Diagram 1 . Air-Cooled Model (S AA) Thermostatic Expansion V alve Evapor ator Evapor ator Thermistor W ater T ank W ater P ump Condenser Drier F an Motor Compr essor Strainer Hot Gas Va l v e Inlet W ater Va l v e W ater Circuit Refrigerant Cir cuit Heat Ex changer[...]

  • Page 8

    8 II. Sequence of Operation and Service Diagnosis A. Sequence of Operation Flo w Char t Legend: AMD –actuator mot or down AMU –actuator mot or up BC –bin control CBT –control boar d thermistor Comp –compressor ET –e vaporat or ther mistor FD –full drain (CB Set ting 14) 1 . Bin F ull Shutdown and Restart BC Operation BC open 1 0 sec. [...]

  • Page 9

    9 B. Sequence of Operation 1 . Star tup Cy cle When po wer supply is turned on, "on" appears on CB displa y and HGV energizes . 30sec. later , har v est cy cle star ts. • If the "RESET" but ton is pr essed dur ing 30-sec. star tup cy cle time, star tup cy cle ends immediatel y and har vest c ycle st ar ts. 2. Har v est Cyc [...]

  • Page 10

    10 ET temper ature is r ecorded 30 seconds af ter PM ener gizes. W ater t emperature correction v alue (CB Set ting 13) is added t o ET temperatur e and this is used as WT v alue in f ollowing harvest cy cle. If CBT>81°F (27°C) (CB Set ting 7 4) and CBT≤1 1 1°F (44°C) (CB Set ting 70), when ET≤-1 .3°F (-1 8.5°C) (CB Setting 2), HGV ene[...]

  • Page 11

    11 C. Service Diagnosis T able F irst see "III.G. Error C odes." If there ar e no recor ded error s, ref er to the t able belo w . No Ice Pr oduction - Possib le Cause 1 . P ower Suppl y a) Of f, b lown fuse, or tripped break er . b) Not within specications. 2. F use (Control Bo x) a) Blown. 3. Control S witch a) In "OFF" or [...]

  • Page 12

    12 Low Ice P roduction - P ossible Cause Long Harvest Cy cle 1 . Evaporat or a) Scaled up . 2. Refrigerant Charge a) Low . 3. Control Boar d a) Ther mist or connection loose (K3). b) Def ective . 4. Evaporat or (Cube Control) Thermistor See "II.E. Evapor ator Thermistor Check" a) Loose, disconnect ed, or def ective . 5. Hot Gas V alv e a)[...]

  • Page 13

    13 Large-Hole Cubes - Possib le Cause (Also see III.H.1 . Dimple Diameter") 4. Icemaker Location a) Insuf ficient clearance. b) Ambient temper ature t oo high. 5. W ater Suppl y a) W ater leaks. b) Improper w ater pr essure. Cloudy Cubes - P ossible Cause 1 . Wat er Qualit y a) High hardness . See "III.H.2. Ice Clarit y ." 2. Slush I[...]

  • Page 14

    14 D . Bin Contr ol Check and Cleaning 1 . Bin Control Chec k This appliance uses a le v er -actuated pr oximity switch t o control the ice le vel in the stor age bin. No adjustment is requir ed. T o check, f ollow the st eps below . 1) T ur n of f the power suppl y . 2) Remo ve the fr ont panel, then mov e the control s witch to the "OFF"[...]

  • Page 15

    15 2. Bin Control Cleaning Scale ma y build up on BC . Scale can cause the actuator paddle and magnet to stic k. In this case, BC should be cleaned. W ARNING CHOKING HAZARD: Ensure all components , fast eners, and thumbscr ews ar e securel y in place af ter the icemak er is ser viced. Make sur e that none hav e f allen into the dispense unit/ice st[...]

  • Page 16

    16 E. Evapor ator Thermist or Check T o check thermistor r esistance, f ollow the st eps below . 1) T ur n of f the power suppl y . 2) Remo ve the fr ont panel. Move the contr ol switch t o the "OFF" position. 3) Remo ve the contr ol bo x cov er . 4) Remo ve the thermistor fr om the e vapor ator . 5) Immerse the thermistor sensor por tion[...]

  • Page 17

    17 III. Controls and A djustments A. Control S witch The control s witch has three positions: OFF for po wer of f, ICE f or icemaking, and W ASH to ener gize the wat er pump when cleaning and sanitizing. B. Control Boar d • A Hoshizaki e x clusive contr ol board is emplo yed in IM series appliances. • All models are pr etest ed and f actory adj[...]

  • Page 18

    18 1 . Control Boar d L a yout • CN1 6 Connector Actuat or Motor P osition Sensor (Hall IC) Input • CN1 1 Connector Bin Contr ol Input • CN1 3 Connector Evapor ator (Cube C ontrol) Thermistor Input • CN1 0 Connector Compr essor Star t DC R elay Driv e Output • CN4 Connector Dat a Input/Output • CN1 Connector Contr ol T ransformer (1 0.5[...]

  • Page 19

    19 C. Control But t ons The control boar d featur es RESET , SER VICE 1, and SER VICE 2 But tons 1 . RESET Butt on • P r ess br iey t o go to initial harvest c ycle . • P r ess and hold f or 3 seconds to ent er control board set ting mode. For details about control boar d set tings, see "III.D . Contr ol Board Set ting Mode and Contr ol[...]

  • Page 20

    20 D . Contr ol Board Set tings NO TICE F ailure t o maintain f actory set tings ma y adver sely af f ect perf or mance and warr ant y cov erage. F or more inf or mation, contact y our Hoshizaki Ser vice Cent er . 1) With "on" in displa y , press and hold the "RESET" but ton f or 3 seconds. Displa y changes to "1". 2) [...]

  • Page 21

    21 Control Boar d (CB) Setting Menu Category No. Item Range IM-50 0SAA Default W ater Supply , continued 12 F reeze C ycle Wat er Supply Time 1: Partial Drain (CB Set ting 14) 0 to 90 sec. (1 sec. increments) 30 F reeze C ycle Wat er Supply Time 1: F ull Drain (CB Set ting 14) 60 13 W ater T emperature Corr ection V alue V alue added to correct the[...]

  • Page 22

    22 Control Boar d (CB) Setting Menu Category No. Item Range IM-50 0SAA Default Compr essor 37 Compr essor Output Selection DO NO T ADJUST 0: X8 (DC Rela y) On 1: X1 (AC R elay) On 1 Anti-Slush Contr ol 50 P ump De-Energized Time When t emperature at e vaporat or (cube control) thermistor drops t o 37°F (3°C) in the freez e cy cle, pump de-energiz[...]

  • Page 23

    23 Control Boar d (CB) Setting Menu Category No. Item Range IM-50 0SAA Default W ater T ank Ice Contr ol & Har v est Cy cle Low T emperature Contr ol 74 W ater T ank Ice Control Lo wer T emperature See CB Set ting 70, 71, 72, 7 4 descr iption abov e. Har v est Cy cle Low T emperatur e Control If control boar d ther mistor t emperature at the be[...]

  • Page 24

    24 Control Boar d Information Displa y No. Item Description History Clear ed by Pr essing and Holding SER VICE 1 and SER VICE 2 Butt ons Simultaneousl y for 5Sec. when Item V alue is Display ed? h1 Last Complet ed F reeze C ycle Time F reeze c ycles int errupted by bin contr ol shutdown or the "RESET" but ton ar e not recorded. 0 to 99[...]

  • Page 25

    25 F . Control Boar d Model Code Set ting 1 . Control Boar d Replacement W ARNING • This appliance should be diagnosed and repair ed only b y quali ed ser vice personnel t o reduce the risk of death, electr ic shoc k, serious injur y , or re. • Mov e the control s witch to the "OFF" position and turn off the po wer supply . Plac[...]

  • Page 26

    26 5) P r ess the "SER VICE 1" but ton t o increase the r st digit in the displa y and the "SER VICE2" but ton to incr ease the second digit. Digits appear in the f ollowing or der : 0, 1, 2, 3, 4, 5, 6, 7 , 8, 9, A, B, C , D , E, F . When a v alid model code is display ed, the dot in the bot tom right of the displa y tur [...]

  • Page 27

    27 G. Err or Codes When the contr ol board det ects an error , the display sho ws one of the follo wing error codes in the displa y mode. Error codes other than E1 and E2 ar e display ed as "EE" at the time of occurrence . T o see the actual error code, see the err or log. 1 . With the unit on, pr ess and hold the "SER VICE 1" b[...]

  • Page 28

    28 Err or Codes Err or Code Pr oblem Corr ective A ction/Reset Details EE (E5) High Evapor ator T emperatur e If e vapor ator t emperature 1 40°F (60°C) or higher f or 5sec., unit stops . Check f or har vest pr oblem (stuck HGV or contr ol board r elay), hot wat er entering unit, or shor ted thermistor . P ress the "RESET" b ut ton t[...]

  • Page 29

    29 3) P r ess the "SER VICE 2" but ton t o lower fr eeze c ycle t er mination temperatur e set ting (Contr ol Board Set ting 2). T emperature set ting lower s in .5°C increments . The "." in the low er , r ight corner of the display indicat es .5°C. Def ault is -1 8.5°C. NOTICE! Do not decrease dimple size belo w 3/1 6" [...]

  • Page 30

    30 IV . R efrigeration Cir cuit and Component Service Information W ARNING • This appliance should be diagnosed and repair ed only b y quali ed ser vice personnel t o reduce the risk of death, electr ic shoc k, serious injur y , or re. • Mov e the control s witch to the "OFF" position and turn off the po wer supply . Place the d[...]

  • Page 31

    31 2. Brazing W ARNING • R-404A itself is not  ammable at atmospheric pr essure and t emperatures up t o 1 7 6°F (80°C). • R-404A itself is not e xplosiv e or poisonous. Howe ver , when e xposed to high temper atures (open  ames), R-404A can be decomposed to f or m h ydrouoric acid and carbonyl uoride both of which are hazar dous.[...]

  • Page 32

    32 5) Disconnect the gauge manif old hose from the v acuum pump and at tach it to a refrigerant service cylinder . Remember t o loosen the connection and purge the air from the hose . For the r equired r efrigerant charge , see the nameplate . Hoshizaki recommends onl y virgin r efrigerant or reclaimed r efr igerant which meets ARI Standard 700 (la[...]

  • Page 33

    33 W ater P an Assembl y Ref er to illustration f or assembly . Icemaking Assembl y and Cam Mechanism Ref er to illustration f or assembly . 1 . W ater T ank 2. Wat er Plate Br ack et 3. Brac ket 4. Spring Hook Screw 5. P ump T ubing (Suction) 6. P ump T ubing (Discharge) 7 . P ump Motor Brack et 8. W ater Plate 9. Over ow Pipe 1 0. Scre w (for [...]

  • Page 34

    34 V . Maintenance The maintenance schedule belo w is a guideline. More frequent maint enance may be requir ed depending on wat er qualit y , the appliance's envir onment, and local sanitation regulations W ARNING • Only quali ed ser vice technicians should service the appliance. • T o reduce the risk of electric shock, do not touch the[...]

  • Page 35

    35 VI. Pr eparing the Icemak er f or P eriods of Non-Use NO TICE • When st oring the appliance for an e xtended time or in sub-fr eezing temper atures , f ollow the instructions below t o pre vent damage. • T o pre vent damage t o the water pump , do not operat e the appliance with the control s witch in the "W ASH" position when the [...]

  • Page 36

    36 VII. Disposal The appliance contains r efrigerant and must be disposed of in accor dance with applicable national, st ate , and local codes and regulations. Refrigerant m ust be reco ver ed by pr oper l y cer tied service personnel.[...]

  • Page 37

    37 VIII. T echnical Infor mation W e reserve the right to mak e changes in specications and design without pr ior notice. A. Specication Data 1 . IM-50 0SAA AC SUPPLY VOLTAGE 115/60/1 AMPERAGE 11.5 A ( 5 Min. Freeze AT 104°F / WT 80°F) MINIMUM CIRCUIT AMPACIT Y 20 A MAXIMUM FUSE SIZE 20 A APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)[...]

  • Page 38

    38 B. P erf ormance Data P r essure dat a is recor ded at 5 min. into fr eezing cy cle. The data not in bold should be used f or ref erence onl y . 1 . IM-50 0SAA 70/21 500 227 481 218 447 203 80/27 485 220 456 207 417 189 90/32 481 218 435 197 397 180 lbs./day kg./da y 100/38 471 214 426 193 363 165 70/21 80/27 90/32 watts 100/38 70/21 105 0.40 99[...]

  • Page 39

    39 C. W iring Diagram 1 . IM-50 0SAA[...]