Instruction/ maintenance manual of the product M029-897 Hoshizaki
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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: 5-19-20.
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.
3 CONTENTS Impor tant Saf et y Inf or mation ................................................................................................. 4 I. Construction and W ater/Refrigeration Cir cuit Diagram ................................................
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 .
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 .
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 .
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 esso.
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 .
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 . 30sec. 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.
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 .
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 specications.
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.
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 .
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 .
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.
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 .
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.
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.
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 iey 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.
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.
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.
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 o.
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.
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 5Sec. 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.
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 .
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 VICE2" 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 .
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.
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 5sec., 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 .
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 .
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 .
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 ydrouoric acid and carbonyl uoride both of which are hazar dous.
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 .
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 .
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.
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.
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.
37 VIII. T echnical Infor mation W e reserve the right to mak e changes in specications and design without pr ior notice. A. Specication 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.
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.
39 C. W iring Diagram 1 . IM-50 0SAA.
An important point after buying a device Hoshizaki M029-897 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Hoshizaki M029-897 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Hoshizaki M029-897 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Hoshizaki M029-897 you will learn all the available features of the product, as well as information on its operation. The information that you get Hoshizaki M029-897 will certainly help you make a decision on the purchase.
If you already are a holder of Hoshizaki M029-897, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Hoshizaki M029-897.
However, one of the most important roles played by the user manual is to help in solving problems with Hoshizaki M029-897. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Hoshizaki M029-897 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
