Instruction/ maintenance manual of the product AM-50BAE Hoshizaki
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Hoshizaki “A Superior Degr ee of Reliability” www .hoshizaki.com Models AM-50BAE AM-50BAE-DS AM-50BAE-AD AM-50BAE-ADDS Self-Contained Cuber Hoshizaki America, Inc.
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/R efrigeration Cir cuit Diagr am ..............................................
4 Impor tant Safety Inf ormation Throughout this man ual, notices appear t o bring your at tention t o situations which could result in death, serious injur y , damage t o the appliance, or damage t o proper t y . W ARNING Indicates a hazar dous situation which could r esult in death or serious injury .
5 W ARNING, continued • Do not make an y alterations t o the appliance. Alt erations could r esult in electric shock, serious injur y , r e, or damage . • Do not use an e xt ension cor d. • Do not use an appliance with a damaged pow er cor d.
6 NO TICE • P r ot ect the oor when mo ving the appliance t o pr e vent damage t o the oor . • When making w at er supply or dr ain line r epair s , f ollow the requir ements found in the instruction manual to r educe the r isk of costly w ater damage.
7 I. Construction and W ater/R efrigeration Cir cuit Diagram A. Construction T op P anel Ice Making Mechanism Scoop Holder F ront P anel Contr ol S witch Louver Bin Contr ol Ther mostat Bulb Slope Mag.
8 B. W at er/R efr igeration Cir cuit Diagr am Inlet W ater V alve Pump Motor W ater T ank Evaporator Capillary T ube Accumulator Ice Storage Bin Hot Gas V alve Compressor Condenser Drier Fan W ater C.
9 II. Sequence of Operation and Service Diagnosis A. Sequence of Operation Flo w Char t Components Energized when the Contr ol S witch is in the "W A SH" P osition The "W ASH" position on the control s witch is used when cleaning and sanitizing the icemaker .
10 B. Service Diagnosis W ARNING • The 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 . • Risk of electric shock. Use extr eme caution and ex ercise saf e electr ical practices .
11 1 . Diagnostic Pr ocedure: Auxiliary Code C-0 and Earlier 3) P ow er On/Initial Harvest Cy cle. Move the contr ol switch t o the "ICE" position. Comp , HGV , and WV energize . Initial har vest c y cle star ts. 50-sec. HT and 1 02-sec. WVT star t.
12 4) Initial F r eeze Cyc le . Comp and 1 02-sec. WVT (WV continues another 52sec.in freez e cycle) contin ue. FM and PM energiz e. HGV de-energizes . When 1 02-sec. WVT terminates , WVde-energiz es. CB monit or s the cooling of the e v aporator via the ther mist or locat ed on the e vaporat or for fr eeze termination.
13 c) WV Diagnosis : Check that wat er enter s the wat er tank. If not, check that the wat er supply line shut-of f val v e is open and screens or e xt ernal lter s are clear . Check f or 1 1 5V A C at CB C2 (BK) to neutral (W) and CB A2 (V) to neutral (W).
14 2. Diagnostic Pr ocedure: A uxiliary Code C-1 and L ater 3) P ow er On/Initial Harvest Cy cle – LED 1 is ashing and LED 3 is on. Mov ethe control s witch to the "ICE" position. LEDs 1 (gr een), 3 (gr een), and 4 (orange) tur n on briey then tur n of f.
15 4) Initial F r eeze Cyc le – LED 1 is ashing and LEDs 3 and 2 are on . Comp and 1 02-sec. WVT (WV continues another 52sec. in freez e cycle) contin ue. FM and PM energiz e. HGV de-energizes . When 1 02-sec. WVT t erminates, LED 3 turns of f and WVde-energiz es.
16 b) HGV Diagnosis : If Comp is energiz ed and ev aporator is not w arming, chec k that HGV energiz es and opens. If not, check f or 1 1 5V AC at CB C1 (BR) t o neutral (W) and CB B1 (P) to neutr al (W). If 1 1 5V A C is pr esent at CB C1 (BR) to neutr al (W) and not at CB B1 (P) to neutr al (W), r eplace CB .
17 7) Shutdown. W hen the appliance is running, hold ice in contact with the thermostatic bulb . BC s witch opens within 1 0 sec., shut ting down the appliance. BC is f actor y set, and generall y no adjustment is r equir ed. Howe ver , adjustment ma y be needed in some conditions, par ticularly at higher altitude locations .
18 D . Ther mist or Check T o check thermistor r esistance , f ollow the steps belo w . 1) Mov e the control s witch to the "OFF" position. 2) Unplug the appliance. 3) Remo ve the contr ol bo x cov er . 4) Remo ve the thermistor fr om the e vaporat or .
19 E. Diagnostic T ables 1 . No Ice Pr oduction No Ice Pr oduction - Possib le Cause 1. P ower Suppl y a) Unplugged, of f, b lown fuse , or tripped break er . b) Not within specications. 2. W ater Suppl y a) W ater supply of f or improper w ater pr essure.
20 2. F reeze-Up Defrost and clean the icemak er pr ior t o diagnosing fr eeze-up . Fill out a fr eez e-up chec klist. See the Hoshizaki America T echnician's P ock et Guide or contact your local distribut or for a cop y of the fr eez e-up chec klist.
21 3. Low Ice P r oduction Low Ice P r oduction - P ossible Cause Long Harvest Cy cle 1. Evapor at or a) Scaled up , dir ty . 2. Ice Chute a) Out of position. b) D amaged. 3. Refrigerant Charge a) L o w. 4. Control Boar d See "III.B. Set tings and Adjustments .
22 III. Control Boar d • A Hoshizaki e x clusive contr ol board is emplo yed in AM series appliances. • All models are pr etest ed and f actor y adjust ed. NO TICE • F ragile, handle v er y carefull y . • The control boar d contains integ rat ed circuits, which ar e susceptible t o f ailure due to st atic dischar ge .
23 A. Control Boar d L a y out 1 . Auxiliary Code C-0 and Earlier • 1 15V A C Control Board P ower Suppl y U–1 15V AC C ontr ol Board P ower Suppl y (BK) V–Neutral (W) • TH1 Connector Thermist.
24 2. Auxiliary Code C-1 and Later LED 3 LED 2 LED 1 COLD W ARM COLD W ARM • 24V AC Contr ol Boar d P o wer Suppl y B–24V AC Contr ol Board P ower Supply (R) W–Neutral (LB U) • TH1 Connector T.
25 B. Set tings and Adjustments 1) VR1 Harvest Contr ol VR1 har v est contr ol is f or adjustment of the har vest cy cle completion temperatur e. F actory set, do not adjust. NO TICE Do not adjust VR1 har v est contr ol. VR1 har vest contr ol is f actor y set f or proper operation.
26 C. LED Lights A uxiliar y Code C-1 and Later 1) LED 1 24V A C G reen LED 1 ashes to indicat e proper 24V AC and continues t o ash unless BC is open, control s witch is mov ed to the "OFF" position, or appliance is unplugged.
27 IV . R efr igeration Cir cuit and Component Ser vice Inf ormation 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 .
28 2. Brazing W ARNING • R-1 34a itself is not ammab le at atmospher ic pr essur e and temper atur es up t o 21 2°F (1 00°C). • R-1 34a itself is not explosiv e or poisonous.
29 6) A liquid charge is r ecommended when charging an R-1 34a sy stem. Place the ser vice cylinder on the scales; if the ser vice cylinder is not equipped with a dip tube, in v er t the ser vice cylinder , then place it on the scales. Open the high-side val v e on the gauge manif old.
30 V . Maint enance This appliance must be maintained in accor dance with the instr uction manual and labels pro vided with the appliance. Consult with your local Hoshizaki C er ti ed Ser vice Repr esentativ e about maint enance ser vice. W ARNING • Only quali ed ser vice technicians should service this appliance.
31 B. Optional Drain P ump HS-0248 or HS-5061 If the optional drain pump (HS-0248 or HS-5061) is installed, t est its operation at least once a year as outlined belo w . Note that the pump has po wer e v en when the contr ol s witch is in the "OFF" position.
32 8) Remo ve the dischar ge hose r estriction and allow the wat er to be pumped out normally . P ow er t o the appliance will be rest ored when the w at er in the drain pump r etur ns to a nor mal le vel.
33 VI. Pr eparing the Icemak er f or Per iods of Non-Use During e xt ended periods of non-use, e xtended absences, or in sub-fr eezing temper atur es , f ollow the instructions below . W hen the appliance is not used f or t wo or three da ys under normal conditions, it is suf ficient t o mo v e the contr ol s witch to the "OFF" position.
34 VII. Disposal This appliance contains r efrigerant and must be disposed of in accor dance with applicable national, st at e , and local codes and r egulations.
35 VIII. T echnical Infor mation A. Specication and P erf ormance Data 1 . AM-50BAE, AM-50B AE-DS, AM-50B AE-AD , AM-50B AE-ADDS SPECIFICATION SHEE T MODEL: AM-50BAE, AM-50BAE-DS, AM-50BAE-AD, AM-50BAE-ADDS AC SUPPLY VOLTAGE 115/60/1 AMPERAGE 3.4 A (5 Min.
36 B. W iring Diagrams 1 . Auxiliary Code C-0 and Earlier.
37 2. Auxiliary Code C-1 and Later.
38 3. HS-0248 and HS-5061 Optional Drain P ump a) HS-0248 b) HS-5061 T o Icemaker T o Icemaker.
An important point after buying a device Hoshizaki AM-50BAE (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 AM-50BAE 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 AM-50BAE - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Hoshizaki AM-50BAE you will learn all the available features of the product, as well as information on its operation. The information that you get Hoshizaki AM-50BAE will certainly help you make a decision on the purchase.
If you already are a holder of Hoshizaki AM-50BAE, 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 AM-50BAE.
However, one of the most important roles played by the user manual is to help in solving problems with Hoshizaki AM-50BAE. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Hoshizaki AM-50BAE 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
