Instruction/ maintenance manual of the product KM-1601SWH/3 Hoshizaki
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Hoshizaki “A Superior Degr ee of Reliability” www .hoshizaki.com Models KM-1601SAH/3 KM-1601SWH/3 KM-1601SRH/3 Stackable Crescent Cuber Hoshizaki America, Inc.
2 IMPOR T ANT Only quali ed ser vice technicians should inst all, ser vice , and maintain the icemaker . No ser vice or maint enance should be under tak en until the t echnician has thoroughl y read this Ser vice Manual.
3 CONTENTS Impor tant Saf et y Inf or mation ................................................................................................. 5 I. Specications .......................................................................................
4 B. W iring Diagr ams .......................................................................................................... 40 1 . KM-1 60 1SAH (air -cooled)....................................................................................... 40 2.
5 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 , or damage to the unit. W ARNING Indicates a hazar dous situation which could r esult in death or serious injury .
6 I. Specications A. Icemaker 1 . KM-1 60 1SAH (air -cooled) Note: We r eser v e the r ight t o make changes in specications and design without prior notice.
7 2. KM-1 60 1SAH3 (air -cooled) Note: We r eser v e the r ight t o make changes in specications and design without prior notice. AC SUPPLY VOLTAGE 208-230/60/3 AMPERAGE 12.0 A ( 5 Min. Freeze AT 104°F / W T 80°F) MINIMUM CIRCUIT AMPACIT Y 20 A MAXIMUM FUSE SIZE 20 A APPROXIMAT E ICE PRODUCTIO N Ambient W AT ER TEMP.
8 Note: We r eser v e the r ight t o make changes in specications and design without prior notice. 3. KM-1 60 1SWH (w ater -cooled) AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral for 115V) AMPERAGE 13.4 A ( 5 Min. Freeze AT 104°F / WT 80°F) MINIMUM CIRCUIT AMPACITY 20 A MAXIMUM FUSE SIZE 20 A APPROXIMATE ICE PRODUCTION Ambient WATER TEMP.
9 AC SUPPLY VOLTAGE 208-230/60/3 AMPERAGE 9.0 A ( 5 Min. Freeze AT 104°F / W T 80°F) MINIMUM CIRCUIT AMPACIT Y 20 A MAXIMUM FUSE SIZE 20 A APPROXIMAT E ICE PRODUCTIO N Ambient W AT ER TEMP.
10 5. KM-1 60 1SRH with URC-21F (r emote air-cooled) (auxiliary codes: R-0; R-1; some S-1) This data applies t o units with an 8 l/min w at er v al v e . The 8 l/min water v alv e is par t number 3U0 1 1 1 -02 and has J248-032 stamped on the side of the v alv e f acing the rear of the unit.
11 AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral for 115V) AMPERAGE 12.8 A ( 5 Min. Freeze AT 104°F / W T 80°F) MINIMUM CIRCUIT AMPACIT Y 20 A MAXIMUM FUSE SIZE 20 A APPROXIMAT E ICE PRODUCTIO N Ambient W AT ER TEMP. (°F) PER 24 HR. Tem p.(°F) 50 70 90 lbs.
12 7 . KM-1 60 1SRH with URC-22F (r emote air -cooled) (auxiliar y codes: S-2 and later) This data applies t o units with an 1 1 l/min wat er v al v e . The 1 1 l/min wat er v al v e is either par t number 4A1 1 7 6-04 or 4A5251 -04 and has the par t number stamped on the side of the v al v e f acing the front of the unit.
13 8. KM-1 60 1SRH3 with URC-21F (r emote air -cooled) (auxiliar y codes: R-0; R-1; some S-1) This data applies t o units with an 8 l/min w at er v al v e . The 8 l/min water v alv e is par t number 3U0 1 1 1 -02 and has J248-032 stamped on the side of the v alv e f acing the rear of the unit.
14 AC SUPPLY VOLTAGE 208-230/60/3 AMPERAGE 7.9 A ( 5 Min. Freeze AT 104°F / W T 80°F) MINIMUM CIRCUIT AMPACIT Y 20 A MAXIMUM FUSE SIZE 20 A APPROXIMAT E ICE PRODUCTIO N Ambient W AT ER TEMP.
15 1 0. KM-1 60 1SRH3 with URC-22F (remote air -cooled) (auxiliar y codes: S-2 and later) This data applies t o units with an 1 1 l/min wat er v al v e . The 1 1 l/min wat er v al v e is either par t number 4A1 1 7 6-04 or 4A5251 -04 and has the par t number stamped on the side of the v al v e f acing the front of the unit.
16 B. Condenser Unit 1 . URC-21F Note: We r eser v e the r ight t o make changes in specications and design without prior notice. AC SUPPLY VOLTAGE 115/60/1 (Connection to Icemaker) FAN MOTOR 115 V Total 2.
17 2. URC-22F Note: We r eser v e the r ight t o make changes in specications and design without prior notice. AC SUPPLY VOLTAGE 115/60/1 (Connection to Icemaker) FAN MOTOR 115 V Total 2.
18 II. General Inf ormation A. Construction 1 . KM-1 60 1SAH/3 (air -cooled) Ev aporat or Assembl y Spra y T ubes Inlet W ater V alv e (WV) W ater Supply Inlet Hot Gas V alv e (HGV) Junction Bo x Air .
19 2. KM-1 60 1SWH/3 (w ater -cooled) Ev aporat or Assembl y Spra y T ubes W ater Supply Inlet Junction Bo x W ater -Cooled Condenser Check V alv es Contr ol Bo x W ater Regulating V alv e (WR V) Drie.
20 3. KM-1 60 1SRH/3 (r emote air -cooled) Ev aporat or Assembl y Spra y T ubes W ater Supply Inlet Junction Bo xes Receiv er Check V alv es Contr ol Bo x Drier Capacit or Box (KM-1 60 1SRH) T ransf o.
21 B. Sequence of Operation 1 . Sequence Cy c les and Shutdo wn a) KM-1 60 1SAH/3 "G" Contr ol Boar d IMPOR T ANT KM-1 60 1SAH/3 utiliz e a "G" contr ol boar d and TBC . F or KM-1 60 1SAH/3 operation, the K4 jumper (4A4883G0 1) must be in place on the contr ol board RED K4 connector or the unit will not oper at e .
22 continues until F/S opens and t erminates the cy cle. Ther e is a 1 5 second delay bef ore CB ackno wledges an open F/S. (4) P ump-Out C ycle LEDs 1, 3, and 2 ar e on. LED 4 is on when S4 dip s witch 3 & 4 are set t o 3 of f and 4 on. F or details , see "II.
23 b) KM-1 60 1SWH/3 and KM-1 60 1SRH/3 "E" Control Boar d IMPOR T ANT KM-1 60 1SWH/3 and KM-1 60 1SRH/3 utilize an "E" contr ol board and TBC . The steps in the sequence ar e as outlined below . When pow er is supplied, CB r ed "PO WER OK" LED turns on.
24 (5) Harvest C ycle Same as the initial harvest cy cle. See "II.B.1 .b)(2) Initial Harvest C ycle ." Note: Unit continues t o cy cle until TBC is satis ed or power is turned of f . The unit alw a ys rest ar ts at the 1 -minute ll cy cle.
25 2. Sequence Flow Chart a) KM-1 60 1SAH/3 "G" Contr ol Boar d F/S check 1 to 3-min. timer in control (S4 dip switch 1 & 2) "G" Contr ol Boar d Sequence Flow Chart 1 . 1 -Minute F ill Cycl e Cyc le Steps 2. Harvest Cy cle • WVtime: 6min.
26 F/S check 1 to 3-min. timer in control (S4 dip switch 1 & 2) "E" Contr ol Boar d Sequence Flow Chart 1 . 1 -Minute F ill Cycl e Cyc le Steps 2. Harvest Cy cle • WVtime: 6min. orthelengthofharvest,whiche ver is shor ter .
27 C. Control Boar d • A Hoshizaki e x clusive contr ol board is emplo yed in Hoshizaki Stac kab le Cr escent Cubers . • All models are pr etest ed and f actor y set. • F or a contr ol boar d chec k pr ocedur e, see "IV .B . Contr ol Boar d Chec k.
28 1 . Contr ol Boar d Lay out a) KM-1 60 1SAH/3 "G" Contr ol Boar d "G" Control Boar d P ar t Number 2A3792-0 1 "G" Contr ol Boar d • "ALARM RESET" But ton .
29 • "ALARM RESET" But ton • "OUTPUT TEST" But ton (used to t est r ela ys on contr ol board) • WHITE K3 Connector Har v est Contr ol (thermistor) • RED K4 Connector Mechan.
30 2. LED Lights and Audib le Alarm Saf eties a) KM-1 60 1SAH/3 "G" Contr ol Boar d At star tup , a 5-second delay occur s while the control boar d conducts an int er nal timer check. A beep occurs when the contr ol switch is mo ved t o the "ICE" position.
31 b) KM-1 60 1SWH/3 and KM-1 60 1SRH/3 "E" Control Boar d At star tup , a 5-second delay occur s while the control boar d conducts an int er nal timer check. A beep occurs when po wer is tur ned of f. The red LED indicat es proper contr ol v oltage and r emains on unless a control v oltage pr oblem occur s.
32 3. Controls and Adjustments C A UTION Dip s witches ar e f actor y set. F ailure t o maintain f actory set tings ma y adver sel y af fect perf or mance and warr anty cov erage . F or mor e inf ormation, contact Hoshizaki T echnical Suppor t at 1 -800-233-1 940.
33 b) Harvest Timer (S4 dip switch 1 & 2) The har v est timer star ts when the thermistor r eads 48°F (9°C) at the e vaporat or outlet and the control boar d reads the thermistor's 3.9 kΩ signal. The har vest timer is f actor y set, and generall y no adjustment is r equir ed.
34 d) Pump-Out F requenc y Control (S4 dip switch 5 & 6) The pump-out frequenc y contr ol is f actor y set t o drain the w ater tank e very 1 0 cycles (e x cept f or KM-1 60 1SRH/3 utilizing 3U0 1 1 1 -02 water v alv e), and generally no adjustment is requir ed.
35 (2) Bin Control Select or , KM-160 1SWH/3 & KM-1 60 1SRH/3 "E" Control Boar d F actory set for pr oper operation. Do not adjust. W hen set t o the on position on a unit with a ther mostatic bin contr ol, a 5-beep alar m sounds (open circuit) and the unit does not operat e .
36 D . Contr ol Switch The control s witch has three positions: "OFF" for po wer of f, "ICE" f or icemaking, and "W ASH" t o activat e the wat er pump when cleaning and sanitizing.
37 III. T echnical Infor mation A. W at er Cir cuit and R efr igeration Cir cuit 1 . KM-1 60 1SAH/3 (air -cooled) W at er Supply Cleaning V alv e Float Switch Drain P ump-Out Check V alv e Thermostati.
38 2. KM-1 60 1SWH/3 (w ater -cooled) W at er Supply Cleaning V alv e Float Switch Drain Thermostatic Expansion V alves Compr essor Hot Gas Va l v e Check V alv es High-P ressure Switch Strainer Drier.
39 High-Side V apor Ser vice Va l v e Low -Side Ser vice Va l v e 3. KM-1 60 1SRH/3 (r emote air -cooled) W at er Supply Cleaning V alv e Float Switch Drain Thermostatic Expansion V alves Compr essor .
40 B. W iring Diagr ams 1 . KM-1 60 1SAH (air -cooled) T ransformer Output 1 0.5V at 1 15V * * High-Pr essure Switc h Cut-Out 41 2± 21 PSIG Cut-In 327±21 PSIG 0.
41 2. KM-1 60 1SAH3 (air -cooled) T ransformer Output 1 0.5V at 1 15V * * High-Pr essure Switc h Cut-Out 41 2± 21 PSIG Cut-In 327±21 PSIG 0.
42 3. KM-1 60 1SWH (w ater -cooled), KM-1 60 1SRH (remot e air -cooled) * High-Pr essure Switc h W ater-Cooled Model Remot e Model Cut-Out 384± 21 PSIG 41 2± 21 PSIG Cut-In 284±21 PSIG 327±21 PSIG 0 0 * T ransformer Output 1 0.
43 4. KM-1 60 1SWH3 (w ater -cooled), KM-1 60 1SRH3 (remot e air -cooled) T ransformer Output 1 0.5V at 1 15V * * High-Pr essure Switc h W ater-Cooled Model Remot e Model Cut-Out 384± 21 PSIG 41 2± .
44 C. P erf ormance Data 1 . KM-1 60 1SAH (air -cooled) Note: 1 . P ressur e data is recor ded at 5 minutes int o freezing cy cle. The data not in bold should be used f or r ef erence onl y . 2. W e r eserve the right to mak e changes in specications and design without prior notice.
45 2. KM-1 60 1SAH3 (air -cooled) Note: 1 . P ressur e data is recor ded at 5 minutes int o freezing cy cle. The data not in bold should be used f or r ef erence onl y . 2. W e r eserve the right to mak e changes in specications and design without prior notice.
46 3. KM-1 60 1SWH (w ater -cooled) Note: 1 . P ressur e data is recor ded at 5 minutes int o freezing cy cle. The data not in bold should be used f or r ef erence onl y . 2. W e r eserve the right to mak e changes in specications and design without prior notice.
47 Note: 1 . P ressur e data is recor ded at 5 minutes int o freezing cy cle. The data not in bold should be used f or r ef erence onl y . 2. W e r eserve the right to mak e changes in specications and design without prior notice.
48 5. KM-1 60 1SRH with URC-21F (r emote air-cooled) (auxiliary codes: R-0; R-1; some S-1) This data applies t o units with an 8 l/min w at er v al v e . The 8 l/min water v alv e is par t number 3U0 1 1 1 -02 and has J248-032 stamped on the side of the v alv e f acing the rear of the unit.
49 6. KM-1 60 1SRH with URC-21F (r emote air -cooled) (auxiliar y codes: some S-1; S-2 and later) This data applies t o units with a 1 5 l/min or 1 1 l/min wat er val ve. The 1 5 l/min wat er v al v e is par t number 3U0 1 1 1 -0 1 and has J248-030 stamped on the side of the v al v e f acing the rear of the unit.
50 7 . KM-1 60 1SRH with URC-22F (r emote air -cooled) (auxiliar y codes: S-2 and later) This data applies t o units with an 1 1 l/min wat er v al v e . The 1 1 l/min wat er v al v e is either par t number 4A1 1 7 6-04 or 4A5251 -04 and has the par t number stamped on the side of the v al v e f acing the front of the unit.
51 8. KM-1 60 1SRH3 with URC-21F (r emote air -cooled) (auxiliar y codes: R-0; R-1; some S-1) This data applies t o units with an 8 l/min w at er v al v e . The 8 l/min water v alv e is par t number 3U0 1 1 1 -02 and has J248-032 stamped on the side of the v alv e f acing the rear of the unit.
52 9. KM-1 60 1SRH3 with URC-21F (r emote air -cooled) (auxiliar y codes: some S-1; S-2 and later) This data applies t o units with a 1 5 l/min or 1 1 l/min wat er val ve. The 1 5 l/min wat er v al v e is par t number 3U0 1 1 1 -0 1 and has J248-030 stamped on the side of the v al v e f acing the rear of the unit.
53 1 0. KM-1 60 1SRH3 with URC-22F (remote air -cooled) (auxiliar y codes: S-2 and later) This data applies t o units with an 1 1 l/min wat er v al v e . The 1 1 l/min wat er v al v e is either par t number 4A1 1 7 6-04 or 4A5251 -04 and has the par t number stamped on the side of the v al v e f acing the front of the unit.
54 IV . Service Diagnosis W ARNING 1 . This unit 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 . 2. Risk of electr ic shock. Use e xtreme caution and e x ercise saf e electr ical practices .
55 4) Initial Harvest Cy c le – LEDs 1, 4, and 2 are on. WV and X1 1 rela y (KM-1 60 1SAH/3) remain ener gized, Comp , FM/FMR, HGV , and X1 0 rela y (KM-1 60 1S AH/3) energize . CBmonitor s the war ming of the e vapor at or via the ther mist or locat ed on the suction line.
56 5) F r eeze Cyc le – LED 1 is on. Comp and FM/FMR remain ener gized, PM energiz es or , f or KM-1 60 1SAH/3, r emains energized. LL V ener gizes .
57 Diagnosis: KM-1 60 1SAH/3 "G" CB: If PM does not re ver se, chec k to see if S4 and S5 dip s witch set tings are in the f actory default position. If S4 dip s witch 3 and 4 ar e adjusted t o 3 of f and 4 on, WV and har v est pump timer rela ys ener gize.
58 B. Control Boar d Check Bef or e r eplacing CB that does not sho w a visib le def ect and that y ou suspect is bad, alw ay s conduct the follo wing chec k pr ocedur e. This procedur e will help you v erify your diagnosis. Alw a ys choose a whit e neutral wir e to estab lish a good neutral connection when checking v oltages.
59 C. Bin Control Chec k T o check TBC , follo w the st eps below . C A UTION When the ambient t emperature is belo w 45°F (7°C), TBC s witch opens and shuts down the icemak er ev en if the ice storage bin is empty . When TBC is set in the prohibit ed range, the icemak er operates continuousl y ev en if the ice stor age bin is lled with ice.
60 D . Float S witch Check and Cleaning F/S is used to det er mine that there is suf ficient w ater in the wat er tank af ter the 1 -minute ll c y cle and af ter each harvest cy cle. F/S is also used to determine that the appropriate v olume of wat er has been conv er t ed into ice bef ore s witching out of the freez e cy cle.
61 2. Float Switc h Cleaning Depending on local wat er conditions, scale ma y b uild up on F/S . Scale on the switch can cause the oat t o stic k. In this case, F/S should be cleaned. 1) T ur n of f the po wer suppl y . 2) Remo ve the fr ont panel, then mo v e the contr ol s witch to the "OFF" position.
62 E. Thermist or Check T o check thermistor resist ance , f ollow the steps belo w . 1) T ur n of f the po wer suppl y . 2) Remo ve the fr ont panel, then mo v e the contr ol s witch to the "OFF" position. 3) Remo ve the contr ol bo x cov er .
63 G. Diagnostic Charts Bef or e consulting the diagnostic char ts, chec k for corr ect installation, proper v oltage per unit nameplate , and adequate wat er supply .
64 No Ice Pr oduction - Possib le Cause 13 . Inlet W ater V alv e a) Mesh lter or orice clogged. b) Coil winding open. c) Open in freez e cy cle. 14 . Float Switch See "IV .D . Float S witch Check and Cleaning." a) Float does not mov e freely .
65 2. F reeze Up Defrost and clean the unit prior t o diagnosing fr eeze up . See "VI.A. Cleaning and Sanitizing Instructions." F reeze Up - P ossible Cause Harvest Cy cle 1. Evapor at or a) Scaled up . b) Damaged. 2. Separator s a) Out of position.
66 F reeze Up - P ossible Cause 7. Inlet W ater V alv e a) Leaking by . 8. Float Switch See "IV .D . Float S witch Check and Cleaning." a) Float does not mov e freely . b) Def ectiv e. 9. P ump Motor a) RPM too slow . b) Impeller damaged. 10 .
67 Low Ice P r oduction - P ossible Cause 6. Control Boar d See "IV .B. Control Boar d Check." a) Float s witch connection loose (K5). b) Def ectiv e. 7. Hot Gas V alv e a) Erratic or open. 8. Inlet W ater V alv e a) Leaking by . 9. Float Switch See "IV .
68 V . R eplacement of Components W ARNING 1 . This unit should be diagnosed and repair ed onl y b y quali ed ser vice personnel t o reduce the risk of death, electr ic shoc k, serious injur y , or re . 2. Mov e the contr ol s witch t o the "OFF" position and turn of f the pow er suppl y bef or e ser vicing .
69 2. Brazing W ARNING 1 . R-404A itself is not ammable at atmospheric pr essur e and t emperatur es up to 1 7 6°F (80°C). 2. R-404A itself is not explosiv e or poisonous.
70 4) Close the high and low -side val v es on the gauge manif old. 5) Disconnect the gauge manif old hose from the v acuum pump and at tach it t o a refrigerant service cylinder . Remember t o loosen the connection and purge the air from the hose . For air -cooled and wat er -cooled models, see the nameplat e for the requir ed refrigerant char ge.
71 B. Impor tant Not es f or Component R eplacement C A UTION When r eplacing a component listed belo w , see the notes t o help ensur e pr oper operation. Component Notes Compr essor Install a ne w start capacitor , r un capacit or , and star t rela y .
72 VI. Cleaning and Maintenance This icemaker m ust be cleaned and maintained in accor dance with the instr uction manual and labels pr o vided with the icemak er . Consult with your local distrib ut or about cleaning and maintenance service. T o obtain the name and phone number of your local distrib ut or , visit www .
73 1 . Cleaning P r ocedur e 1) Dilute 27 . oz. (800 ml) of Hoshizaki "Scale A wa y" with 5 gal. (1 9 l) of war m w at er . 2) Remo ve all ice fr om the e vaporat or and the storage bin. Note: T o r emov e cubes on the ev aporat or , tur n of f the power suppl y and tur n it back on af ter 3 minut es.
74 21) Remo ve the fr ont panel and full y open the cleaning v al v e. 22) Mov e the control s witch to the "W ASH" position. 23) Replace the fr ont panel in its correct position. 24) T ur n on the power suppl y to rinse of f the cleaning solution.
75 B. Maintenance This icemaker m ust be maintained individuall y , ref erring to the instruction manual and labels pro vided with the icemaker . W ARNING 1 . Only quali ed ser vice technicians should service this icemaker . 2. Mov e the contr ol s witch t o the "OFF" position and turn of f the pow er suppl y bef or e ser vicing .
76 4) Allow the line t o drain by gr a vity . 5) At tach a compressed air or carbon dio xide supply t o the icemaker wat er supply line drain v alv e . 6) Mov e the control s witch to the "ICE" position. 7) Replace the fr ont panel in its correct position, then turn on the power suppl y .
An important point after buying a device Hoshizaki KM-1601SWH/3 (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 KM-1601SWH/3 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 KM-1601SWH/3 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Hoshizaki KM-1601SWH/3 you will learn all the available features of the product, as well as information on its operation. The information that you get Hoshizaki KM-1601SWH/3 will certainly help you make a decision on the purchase.
If you already are a holder of Hoshizaki KM-1601SWH/3, 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 KM-1601SWH/3.
However, one of the most important roles played by the user manual is to help in solving problems with Hoshizaki KM-1601SWH/3. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Hoshizaki KM-1601SWH/3 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
