Hoshizaki “A Superior Degree of Reliability” www.hoshizaki.com Models KM-1601SAH/3KM-1601SWH/3KM-1601SRH/3Stackable Crescent Cuber Hoshizaki America,
105. KM-1601SRH with URC-21F (remote air-cooled) (auxiliary codes: R-0; R-1; some S-1)This data applies to units with an 8 l/min water valve. The 8 l/
11AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral for 115V)AMPERAGE 12.8 A ( 5 Min. Freeze AT 104°F / WT 80°F)MINIMUM CIRCUIT AMPACITY 20 AMAXIMU
127. KM-1601SRH with URC-22F (remote air-cooled) (auxiliary codes: S-2 and later)This data applies to units with an 11 l/min water valve. The 11 l/min
138. KM-1601SRH3 with URC-21F (remote air-cooled) (auxiliary codes: R-0; R-1; some S-1)This data applies to units with an 8 l/min water valve. The 8 l
14AC SUPPLY VOLTAGE 208-230/60/3AMPERAGE 7.9 A ( 5 Min. Freeze AT 104°F / WT 80°F)MINIMUM CIRCUIT AMPACITY 20 AMAXIMUM FUSE SIZE 20 AAPPROXIMATE ICE
1510. KM-1601SRH3 with URC-22F (remote air-cooled) (auxiliary codes: S-2 and later)This data applies to units with an 11 l/min water valve. The 11 l/m
16B. Condenser Unit1. URC-21FNote: We reserve the right to make changes in specications and design without prior notice.AC SUPPLY VOLTAGE 115/60/1 (C
172. URC-22FNote: We reserve the right to make changes in specications and design without prior notice.AC SUPPLY VOLTAGE 115/60/1 (Connection to Icem
18II. General InformationA. Construction1. KM-1601SAH/3 (air-cooled)Evaporator AssemblySpray TubesInlet Water Valve(WV)Water Supply InletHot Gas Valve
192. KM-1601SWH/3 (water-cooled)Evaporator AssemblySpray TubesWater Supply InletJunction BoxWater-Cooled CondenserCheck ValvesControl BoxWater Regulat
2IMPORTANTOnly qualied service technicians should install, service, and maintain the icemaker. No service or maintenance should be undertaken until t
203. KM-1601SRH/3 (remote air-cooled)Evaporator AssemblySpray TubesWater Supply InletJunction BoxesReceiverCheck ValvesControl BoxDrierCapacitor Box(K
21B. Sequence of Operation1. Sequence Cycles and Shutdown a) KM-1601SAH/3 "G" Control BoardIMPORTANTKM-1601SAH/3 utilize a "G" con
22continues until F/S opens and terminates the cycle. There is a 15 second delay before CB acknowledges an open F/S. (4) Pump-Out CycleLEDs 1, 3, and
23b) KM-1601SWH/3 and KM-1601SRH/3 "E" Control BoardIMPORTANTKM-1601SWH/3 and KM-1601SRH/3 utilize an "E" control board and TBC. T
24(5) Harvest CycleSame as the initial harvest cycle. See "II.B.1.b)(2) Initial Harvest Cycle."Note: Unit continues to cycle until TBC is sa
252. Sequence Flow Chart a) KM-1601SAH/3 "G" Control BoardF/S check1 to 3-min. timer in control (S4 dip switch 1 & 2)"G" Contr
26F/S check1 to 3-min. timer in control (S4 dip switch 1 & 2)"E" Control Board Sequence Flow Chart1. 1-Minute Fill CycleCycle Steps2. Ha
27C. Control Board•A Hoshizaki exclusive control board is employed in Hoshizaki Stackable Crescent Cubers.•All models are pretested and factory set.
281. Control Board Layouta) KM-1601SAH/3 "G" Control Board"G" Control BoardPart Number 2A3792-01"G" Control Board• "
29• "ALARM RESET" Button• "OUTPUT TEST" Button(used to test relays on control board)• WHITE K3 ConnectorHarvest Control (thermisto
3CONTENTSImportant Safety Information ... 5I. Specicati
302. LED Lights and Audible Alarm Safetiesa) KM-1601SAH/3 "G" Control BoardAt startup, a 5-second delay occurs while the control board condu
31b) KM-1601SWH/3 and KM-1601SRH/3 "E" Control BoardAt startup, a 5-second delay occurs while the control board conducts an internal timer c
323. Controls and AdjustmentsCAUTIONDip switches are factory set. Failure to maintain factory settings may adversely affect performance and warranty c
33b) Harvest Timer (S4 dip switch 1 & 2)The harvest timer starts when the thermistor reads 48°F (9°C) at the evaporator outlet and the control boa
34d) Pump-Out Frequency Control (S4 dip switch 5 & 6)The pump-out frequency control is factory set to drain the water tank every 10 cycles (except
35(2) Bin Control Selector, KM-1601SWH/3 & KM-1601SRH/3 "E" Control BoardFactory set for proper operation. Do not adjust. When set to th
36D. Control SwitchThe control switch has three positions: "OFF" for power off, "ICE" for icemaking, and "WASH" to activ
37III. Technical InformationA. Water Circuit and Refrigeration Circuit1. KM-1601SAH/3 (air-cooled)Water SupplyCleaning ValveFloat SwitchDrainPump-Out
382. KM-1601SWH/3 (water-cooled)Water SupplyCleaning ValveFloat SwitchDrainThermostatic Expansion ValvesCompressorHot Gas ValveCheck ValvesHigh-Pressu
39High-Side Vapor Service ValveLow-Side Service Valve3. KM-1601SRH/3 (remote air-cooled)Water SupplyCleaning ValveFloat SwitchDrainThermostatic Expan
4B. Wiring Diagrams ... 401. KM-1601SAH (air-co
40B. Wiring Diagrams1. KM-1601SAH (air-cooled)Transformer Output 10.5V at 115V** High-Pressure SwitchCut-Out 412±21 PSIG Cut-In 327±21 PSIG0
412. KM-1601SAH3 (air-cooled)Transformer Output 10.5V at 115V** High-Pressure SwitchCut-Out 412±21 PSIG Cut-In 327±21 PSIG0
423. KM-1601SWH (water-cooled), KM-1601SRH (remote air-cooled)* High-Pressure SwitchWater-Cooled Model Remote ModelCut-Out 384±21 PSIG 412±21 PSIGCut
434. KM-1601SWH3 (water-cooled), KM-1601SRH3 (remote air-cooled)Transformer Output 10.5V at 115V** High-Pressure SwitchWater-Cooled Model Remote Model
44C. Performance Data1. KM-1601SAH (air-cooled)Note:1. Pressure data is recorded at 5 minutes into freezing cycle. The data not in bold should be used
452. KM-1601SAH3 (air-cooled)Note:1. Pressure data is recorded at 5 minutes into freezing cycle. The data not in bold should be used for reference onl
463. KM-1601SWH (water-cooled)Note:1. Pressure data is recorded at 5 minutes into freezing cycle. The data not in bold should be used for reference on
47Note:1. Pressure data is recorded at 5 minutes into freezing cycle. The data not in bold should be used for reference only.2. We reserve the right t
485. KM-1601SRH with URC-21F (remote air-cooled) (auxiliary codes: R-0; R-1; some S-1)This data applies to units with an 8 l/min water valve. The 8 l/
496. KM-1601SRH with URC-21F (remote air-cooled) (auxiliary codes: some S-1; S-2 and later)This data applies to units with a 15 l/min or 11 l/min wate
5Important Safety InformationThroughout this manual, notices appear to bring your attention to situations which could result in death, serious injury,
507. KM-1601SRH with URC-22F (remote air-cooled) (auxiliary codes: S-2 and later)This data applies to units with an 11 l/min water valve. The 11 l/min
518. KM-1601SRH3 with URC-21F (remote air-cooled) (auxiliary codes: R-0; R-1; some S-1)This data applies to units with an 8 l/min water valve. The 8 l
529. KM-1601SRH3 with URC-21F (remote air-cooled) (auxiliary codes: some S-1; S-2 and later)This data applies to units with a 15 l/min or 11 l/min wat
5310. KM-1601SRH3 with URC-22F (remote air-cooled) (auxiliary codes: S-2 and later)This data applies to units with an 11 l/min water valve. The 11 l/m
54IV. Service Diagnosis WARNING1. This unit should be diagnosed and repaired only by qualied service personnel to reduce the risk of death, electric
554) Initial Harvest Cycle – LEDs 1, 4, and 2 are on. WV and X11 relay (KM-1601SAH/3) remain energized, Comp, FM/FMR, HGV, and X10 relay (KM-1601SAH/3
565) Freeze Cycle – LED 1 is on. Comp and FM/FMR remain energized, PM energizes or, for KM-1601SAH/3, remains energized. LLV energizes. HGV and X10 re
57Diagnosis: KM-1601SAH/3 "G" CB: If PM does not reverse, check to see if S4 and S5 dip switch settings are in the factory default position.
58B. Control Board CheckBefore replacing CB that does not show a visible defect and that you suspect is bad, always conduct the following check proced
59C. Bin Control CheckTo check TBC, follow the steps below.CAUTIONWhen the ambient temperature is below 45°F (7°C), TBC switch opens and shuts down th
6I. SpecicationsA. Icemaker1. KM-1601SAH (air-cooled)Note: We reserve the right to make changes in specications and design without prior notice.AC S
60D. Float Switch Check and CleaningF/S is used to determine that there is sufficient water in the water tank after the 1-minute ll cycle and after e
612. Float Switch CleaningDepending on local water conditions, scale may build up on F/S. Scale on the switch can cause the oat to stick. In this cas
62E. Thermistor CheckTo check thermistor resistance, follow the steps below.1) Turn off the power supply.2) Remove the front panel, then move the cont
63G. Diagnostic ChartsBefore consulting the diagnostic charts, check for correct installation, proper voltage per unit nameplate, and adequate water s
64No Ice Production - Possible Cause13. Inlet Water Valve a) Mesh lter or orice clogged.b) Coil winding open.c) Open in freeze cycle.14. Float Switc
652. Freeze UpDefrost and clean the unit prior to diagnosing freeze up. See "VI.A. Cleaning and Sanitizing Instructions."Freeze Up - Possibl
66Freeze Up - Possible Cause7. Inlet Water Valve a) Leaking by.8. Float SwitchSee "IV.D. Float Switch Check and Cleaning."a) Float does not
67Low Ice Production - Possible Cause6. Control BoardSee "IV.B. Control Board Check."a) Float switch connection loose (K5).b) Defective.7. H
68V. Replacement of Components WARNING1. This unit should be diagnosed and repaired only by qualied service personnel to reduce the risk of death, el
692. Brazing WARNING1. R-404A itself is not ammable at atmospheric pressure and temperatures up to 176°F (80°C).2. R-404A itself is not explosive or
72. KM-1601SAH3 (air-cooled)Note: We reserve the right to make changes in specications and design without prior notice.AC SUPPLY VOLTAGE 208-230/60/3
704) Close the high and low-side valves on the gauge manifold.5) Disconnect the gauge manifold hose from the vacuum pump and attach it to a refrigeran
71B. Important Notes for Component ReplacementCAUTIONWhen replacing a component listed below, see the notes to help ensure proper operation.Component
72VI. Cleaning and MaintenanceThis icemaker must be cleaned and maintained in accordance with the instruction manual and labels provided with the icem
731. Cleaning Procedure1) Dilute 27 . oz. (800 ml) of Hoshizaki "Scale Away" with 5 gal. (19 l) of warm water. 2) Remove all ice from the e
7421) Remove the front panel and fully open the cleaning valve.22) Move the control switch to the "WASH" position.23) Replace the front pane
75B. MaintenanceThis icemaker must be maintained individually, referring to the instruction manual and labels provided with the icemaker. WARNING1. On
764) Allow the line to drain by gravity.5) Attach a compressed air or carbon dioxide supply to the icemaker water supply line drain valve.6) Move the
8Note: We reserve the right to make changes in specications and design without prior notice.3. KM-1601SWH (water-cooled)AC SUPPLY VOLTAGE 208-230/60/
9AC SUPPLY VOLTAGE 208-230/60/3AMPERAGE 9.0 A ( 5 Min. Freeze AT 104°F / WT 80°F)MINIMUM CIRCUIT AMPACITY 20 AMAXIMUM FUSE SIZE 20 AAPPROXIMATE ICE P
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