Hoshizaki KM-901MRH/3, KM-901MWH, KM-901MAH service manual 912, 835, 1480, 1570, 876, 1344, 227, 236

Page 47

2. KM-901MWH (water-cooled)

APPROXIMATE ICE				AMBIENT TEMP.			WATER TEMP. (ºF/ºC)
PRODUCTION PER 24 HR.				(ºF/ºC)		50/10			70/21			90/32
				70/21	912	414		889	403		849	385
				80/27	895	406		860	390		815	370
				90/32	889	403		835	379		791	359
lbs./day		kg./day		100/38	878	398		825	374		751	341

APPROXIMATE ELECTRIC				70/21		1480			1506			1527
CONSUMPTION				80/27		1500			1541			1553
				90/32		1506			1570			1586
watts				100/38		1505			1574			1600
APPROXIMATE WATER				70/21	876	3.32		1013	3.84		1530	5.79
CONSUMPTION PER 24 HR.				80/27	981	3.71		1194	4.52		1893	7.17
		m3/day		90/32	1013	3.84		1344	5.09		1977	7.48
gal./day		m3/day		100/38	1360	5.15		1493	5.65		2559	9.69
FREEZING CYCLE TIME				70/21		18			19			20
				80/27		19			19			21
				90/32		19			20			21
min.				100/38		19			20			22
HARVEST CYCLE TIME				70/21		4.1			3.8			3.6
				80/27		3.9			3.4			3.3
				90/32		3.8			3.1			2.9
min.				100/38		3.4			3.0			2.7
HEAD PRESSURE				70/21	227	16.0		230	16.1		240	16.9
				80/27	229	16.1		233	16.4		247	17.4
				90/32	230	16.1		236	16.6		249	17.5
PSIG	kg/cm2G			100/38	234	16.4		239	16.8		260	18.3
SUCTION PRESSURE				70/21	33	2.3		34	2.4		38	2.6
				80/27	34	2.4		36	2.5		40	2.8
				90/32	34	2.4		37	2.6		41	2.9
PSIG	kg/cm2G			100/38	36	2.5		38	2.7		45	3.2

TOTAL HEAT OF REJECTION FROM CONDENSER	13,500	BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
TOTAL HEAT OF REJECTION FROM COMPRESSOR	2,100	BTU/h [AT 90ºF (32ºC) / WT 70ºF (21ºC)]
WATER FLOW FOR CONDENSER	100 gal./h [AT 100ºF (38ºC) / WT 90ºF (32ºC)]
PRESSURE DROP OF COOLING WATER LINE	less than 10 PSIG

Note:

1.Pressure data is recorded at 5 minutes into freeze cycle. The data not in bold should be used for reference only.

2.We reserve the right to make changes in specifications and design without prior notice.

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Contents KM-901MAH KM-901MWH Hoshizaki AMERICA, INC Contents Page Page Unit Important Safety InformationSerious injury Indicates important information about the use and care1a. KM-901MAH air-cooled Auxiliary Code T-0, U-0 Specifications Icemaker1b. KM-901MAH air-cooled Auxiliary Code U-1 and Later Water Cooled Condenser 2a. KM-901MWH water-cooled Auxiliary Code T-0, U-02b. KM-901MWH water-cooled Auxiliary Code U-1 and Later 3a. KM-901MRH remote air-cooled Auxiliary Code T-0, U-0 3b. KM-901MRH remote air-cooled Auxiliary Code U-1 and Later 4a. KM-901MRH3 remote air-cooled Auxiliary Code T-0, U-0 4b. KM-901MRH remote air-cooled Auxiliary Code U-1 and Later Condenser Unit Model URC-9F SpecificationsKM-901MAH air-cooled II. General Information ConstructionKM-901MWH water-cooled KM-901MRH/3 remote air-cooled Control Board Auxiliary Code T-0, U-0 Sequence of OperationSequence Cycles and Shutdown Control Board Auxiliary Code U-1 and Later ShutdownOFF Cycle at Shutdown Mechanical Bin Control Activation Bin Full Control Board Sequence Flow ChartSequence Flow Chart CycleFill Cycle Control Board Auxiliary Code U-1Later Minute Harvest Cycle Freeze Cycle Pump-Out CycleControl Board Control Board Control Board LayoutPart Number 2A3792-01 Maximum Water Supply Period 6 minutes Harvest Backup Timer and Freeze TimerHigh Temperature Safety Low Water SafetyEnergized Time LEDs are On Components Min Max Avg LED Lights and Audible Alarm SafetiesNo. of Beeps Type of Alarm Every 3 sec Sequence StepControl Board Auxiliary Code U-1 and Later S4 Dip Switch S4 Dip Switch No Controls and AdjustmentsDefault Dip Switch Settings Harvest Timer S4 dip switch 1S4 Dip Switch Setting Time seconds Inlet Pump-Out Timer S4 dip switch 3Pump-Out Frequency Control S4 dip switch 5 Control Board S4 Dip Switch Setting Pump Motor Time seconds Bin Control Selector/Harvest Pump Timer S4 dip switchFactory Use S4 dip switch Control Board S4 Dip Switch Setting Bin ControlS4 Dip Switch Setting Time Minutes Freeze Timer S4 dip switch 9Float Switch Control S5 dip switch 1 G Control Board Refill Counter S5 dip switch 2 through 5 G Control BoardThermistor Float SwitchControl Switch Bin ControlWater Pump Switch Discharge Line KM-901MAH air-cooled and KM-901MWH water-cooled Wiring DiagramsModelCooled-AirWater-Cooled Model PressureHigh* Switch High PressureSwitchKM-901MRH remote air-cooled KM-901MRH3 remote air-cooled Cooled-AirModel High* Pressure Switch Cooled-WaterModelHigh Pressure Switch SwitchPressure Performance Data 1570 912835 1480KM-901MRH remote air-cooled KM-901MRH3 remote air-cooled Diagnostic Procedure IV. Service DiagnosisPage OFF Shutdown Thermostatic Bin Control Auxiliary Code T-0, U-0 Control Board CheckControl Correct LED Board Lighting Sequence Bin Control CheckMechanical Bin Control Check Mechanical Bin Control Cleaning Float Switch Check Float Switch Check and CleaningFloat Switch Cleaning Thermistor Check No Ice Production Diagnostic ChartsProblem Possible Cause Remedy Problem Possible Cause Remedy Problem Possible Cause Remedy Evaporator is Frozen Up Problem Possible Cause Remedy Low Ice Production Abnormal Ice Other Refrigerant Recovery Removal and Replacement of ComponentsService for Refrigerant Lines Evacuation and Recharge R-404A BrazingRemoval and Replacement of Compressor Removal and Replacement of Expansion Valve Page Removal and Replacement of Evaporator Removal and Replacement of Air-Cooled Condenser Removal and Replacement of Water-Cooled Condenser Removal and Replacement of Remote Air-Cooled Condenser Page Adjustment of Water Regulating Valve water-cooled model Removal and Replacement of Thermistor Removal and Replacement of Inlet Water Valve Removal and Replacement of Pump Motor Removal and Replacement of Control Board Cleaning and Sanitizing Instructions VI. Cleaning and MaintenanceCleaning Procedure Sanitizing Procedure Following Cleaning Procedure Preparing the Icemaker for Long Storage MaintenanceDrain the water tank