Hoshizaki KM-1601SRH/3 User Manual

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 specications and design without prior notice.AC SUPPLY VOLTAGE 115/60/1 (C

172. URC-22FNote: We reserve the right to make changes in specications 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 qualied 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. Specicati

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 qualied 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. SpecicationsA. Icemaker1. KM-1601SAH (air-cooled)Note: We reserve the right to make changes in specications 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 orice 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 qualied 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 specications 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 specications 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